* gen-icache.c (print_icache_extraction): When generating #define
authorAndrew Cagney <cagney@redhat.com>
Tue, 21 Apr 1998 00:11:40 +0000 (00:11 +0000)
committerAndrew Cagney <cagney@redhat.com>
Tue, 21 Apr 1998 00:11:40 +0000 (00:11 +0000)
force the expression to the correct type.

sim/igen/ChangeLog
sim/igen/gen-icache.c [new file with mode: 0644]

index fae78c1b6d774b6fb0a765645490dcde403d982b..31ba762470ead13850933ee893e79d437f9d2064 100644 (file)
@@ -1,3 +1,19 @@
+Tue Apr 21 01:37:54 1998  Andrew Cagney  <cagney@b1.cygnus.com>
+
+       * gen-icache.c (print_icache_extraction): When generating #define
+       force the expression to the correct type.
+
+Thu Apr 16 08:50:29 1998  Andrew Cagney  <cagney@b1.cygnus.com>
+
+       * misc.c (name2i): strlen returns an unsigned.
+
+Tue Apr 14 19:04:28 1998  Andrew Cagney  <cagney@b1.cygnus.com>
+
+       * igen.h (struct igen_warn_options): Add unimplemented option.
+       * igen.c (main): Update
+
+       * ld-insn.c (load_insn_table): Report unimplemented functions.
+
 Tue Apr 14 10:57:26 1998  Andrew Cagney  <cagney@b1.cygnus.com>
 
        * ld-insn.c (parse_insn_word): Treat `!' and `=' as valid
diff --git a/sim/igen/gen-icache.c b/sim/igen/gen-icache.c
new file mode 100644 (file)
index 0000000..31c5ab9
--- /dev/null
@@ -0,0 +1,852 @@
+/*  This file is part of the program psim.
+
+    Copyright (C) 1994-1998, Andrew Cagney <cagney@highland.com.au>
+
+    This program is free software; you can redistribute it and/or modify
+    it under the terms of the GNU General Public License as published by
+    the Free Software Foundation; either version 2 of the License, or
+    (at your option) any later version.
+
+    This program is distributed in the hope that it will be useful,
+    but WITHOUT ANY WARRANTY; without even the implied warranty of
+    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+    GNU General Public License for more details.
+    You should have received a copy of the GNU General Public License
+    along with this program; if not, write to the Free Software
+    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+    */
+
+
+#include "misc.h"
+#include "lf.h"
+#include "table.h"
+#include "filter.h"
+#include "igen.h"
+
+#include "ld-insn.h"
+#include "ld-decode.h"
+
+#include "gen.h"
+
+#include "gen-semantics.h"
+#include "gen-idecode.h"
+#include "gen-icache.h"
+
+
+
+static void
+print_icache_function_header (lf *file,
+                             const char *basename,
+                             const char *format_name,
+                             opcode_bits *expanded_bits,
+                             int is_function_definition,
+                             int nr_prefetched_words)
+{
+  lf_printf(file, "\n");
+  lf_print__function_type_function (file, print_icache_function_type,
+                                   "EXTERN_ICACHE", " ");
+  print_function_name (file,
+                      basename, format_name, NULL,
+                      expanded_bits,
+                      function_name_prefix_icache);
+  lf_printf (file, "\n(");
+  print_icache_function_formal (file, nr_prefetched_words);
+  lf_printf (file, ")");
+  if (!is_function_definition)
+    lf_printf (file, ";");
+  lf_printf (file, "\n");
+}
+
+
+void
+print_icache_declaration (lf *file,
+                         insn_entry *insn,
+                         opcode_bits *expanded_bits,
+                         insn_opcodes *opcodes,
+                         int nr_prefetched_words)
+{
+  print_icache_function_header (file,
+                               insn->name,
+                               insn->format_name,
+                               expanded_bits,
+                               0/* is not function definition */,
+                               nr_prefetched_words);
+}
+
+
+
+static void
+print_icache_extraction (lf *file,
+                        const char *format_name,
+                        cache_entry_type cache_type,
+                        const char *entry_name,
+                        const char *entry_type,
+                        const char *entry_expression,
+                        char *single_insn_field,
+                        line_ref *line,
+                        insn_field_entry *cur_field,
+                        opcode_bits *expanded_bits,
+                        icache_decl_type what_to_declare,
+                        icache_body_type what_to_do)
+{
+  const char *expression;
+  opcode_bits *bits;
+  char *reason;
+  ASSERT (format_name != NULL);
+  ASSERT (entry_name != NULL);
+  
+  /* figure out exactly what should be going on here */
+  switch (cache_type)
+    {
+    case scratch_value:
+      if ((what_to_do & put_values_in_icache)
+         || what_to_do == do_not_use_icache)
+       {
+         reason = "scratch";
+         what_to_do = do_not_use_icache;
+       }
+      else
+       return;
+      break;
+    case compute_value:
+      if ((what_to_do & get_values_from_icache)
+         || what_to_do == do_not_use_icache)
+       {
+         reason = "compute";
+         what_to_do = do_not_use_icache;
+       }
+      else
+       return;
+      break;
+    case cache_value:
+      if ((what_to_declare != undef_variables)
+         || !(what_to_do & put_values_in_icache))
+       {
+         reason = "cache";
+         what_to_declare = ((what_to_do & put_values_in_icache)
+                            ? declare_variables
+                            : what_to_declare);
+       }
+      else
+       return;
+      break;
+    }
+  
+  /* For the type, default to a simple unsigned */
+  if (entry_type == NULL || strlen (entry_type) == 0)
+    entry_type = "unsigned";
+  
+  /* look through the set of expanded sub fields to see if this field
+     has been given a constant value */
+  for (bits = expanded_bits;
+       bits != NULL;
+       bits = bits->next)
+    {
+      if (bits->field == cur_field)
+       break;
+    }
+  
+  /* Define a storage area for the cache element */
+  switch (what_to_declare)
+    {
+    case undef_variables:
+      /* We've finished with the #define value - destory it */
+      lf_indent_suppress (file);
+      lf_printf (file, "#undef %s\n", entry_name);
+      return;
+    case define_variables:
+      /* Using direct access for this entry, define it */
+      lf_indent_suppress (file);
+      lf_printf (file, "#define %s ((%s) ", entry_name, entry_type);
+      break;
+    case declare_variables:
+      /* using variables to define the value */
+      if (line != NULL)
+       lf_print__line_ref (file, line);
+      lf_printf (file, "%s const %s UNUSED = ", entry_type, entry_name);
+      break;
+    }
+  
+  
+  /* define a value for that storage area as determined by what is in
+     the cache */
+  if (bits != NULL
+      && single_insn_field != NULL
+      && strcmp (entry_name, single_insn_field) == 0
+      && strcmp (entry_name, cur_field->val_string) == 0
+      && ((bits->opcode->is_boolean && bits->value == 0)
+         || (!bits->opcode->is_boolean)))
+    {
+      /* The cache rule is specifying what to do with a simple
+         instruction field.
+        
+        Because of instruction expansion, the field is either a
+        constant value or equal to the specified constant (boolean
+        comparison). (The latter indicated by bits->value == 0).
+        
+         The case of a field not being equal to the specified boolean
+         value is handled later. */
+      expression = "constant field";
+      ASSERT (bits->field == cur_field);
+      if (bits->opcode->is_boolean)
+       {
+         ASSERT (bits->value == 0);
+         lf_printf (file, "%d", bits->opcode->boolean_constant);
+       }
+      else if (bits->opcode->last < bits->field->last)
+       {
+         lf_printf (file, "%d",
+                    bits->value << (bits->field->last - bits->opcode->last));
+       }
+      else
+       {
+         lf_printf (file, "%d", bits->value);
+       }
+    }
+  else if (bits != NULL
+          && single_insn_field != NULL
+          && strncmp (entry_name,
+                      single_insn_field,
+                      strlen (single_insn_field)) == 0
+          && strncmp (entry_name + strlen (single_insn_field),
+                      "_is_",
+                      strlen ("_is_")) == 0
+          && ((bits->opcode->is_boolean
+               && ((unsigned) atol (entry_name + strlen (single_insn_field) + strlen ("_is_"))
+                   == bits->opcode->boolean_constant))
+              || (!bits->opcode->is_boolean)))
+    {
+      /* The cache rule defines an entry for the comparison between a
+        single instruction field and a constant.  The value of the
+        comparison in someway matches that of the opcode field that
+        was made constant through expansion. */
+      expression = "constant compare";
+      if (bits->opcode->is_boolean)
+       {
+         lf_printf (file, "%d /* %s == %d */",
+                    bits->value == 0,
+                    single_insn_field,
+                    bits->opcode->boolean_constant);
+       }
+      else if (bits->opcode->last < bits->field->last)
+       {
+         lf_printf (file, "%d /* %s == %d */",
+                    (atol (entry_name + strlen (single_insn_field) + strlen ("_is_"))
+                     == (bits->value << (bits->field->last - bits->opcode->last))),
+                    single_insn_field,
+                    (bits->value << (bits->field->last - bits->opcode->last)));
+       }
+      else
+       {
+         lf_printf (file, "%d /* %s == %d */",
+                    (atol (entry_name + strlen (single_insn_field) + strlen ("_is_"))
+                     == bits->value),
+                    single_insn_field,
+                    bits->value);
+       }
+    }
+  else
+    {
+      /* put the field in the local variable, possibly also enter it
+        into the cache */
+      expression = "extraction";
+      /* handle the cache */
+      if ((what_to_do & get_values_from_icache)
+         || (what_to_do & put_values_in_icache))
+       {
+         lf_printf (file, "cache_entry->crack.%s.%s",
+                    format_name,
+                    entry_name);
+         if (what_to_do & put_values_in_icache) /* also put it in the cache? */
+           {
+             lf_printf (file, " = ");
+           }
+       }
+      if ((what_to_do & put_values_in_icache)
+         || what_to_do == do_not_use_icache)
+       {
+         if (cur_field != NULL)
+           {
+             if (entry_expression != NULL && strlen (entry_expression) > 0)
+               error (line, "Instruction field entry with nonempty expression\n");
+             if (cur_field->first == 0 && cur_field->last == options.insn_bit_size - 1)
+               lf_printf (file, "(instruction_%d)",
+                          cur_field->word_nr);
+             else if (cur_field->last == options.insn_bit_size - 1)
+               lf_printf (file, "MASKED%d (instruction_%d, %d, %d)",
+                          options.insn_bit_size,
+                          cur_field->word_nr,
+                          i2target (options.hi_bit_nr, cur_field->first),
+                          i2target (options.hi_bit_nr, cur_field->last));
+             else
+               lf_printf (file, "EXTRACTED%d (instruction_%d, %d, %d)",
+                          options.insn_bit_size,
+                          cur_field->word_nr,
+                          i2target (options.hi_bit_nr, cur_field->first),
+                          i2target (options.hi_bit_nr, cur_field->last));
+           }
+         else
+           {
+             lf_printf (file, "%s", entry_expression);
+           }
+       }
+    }
+  
+  switch (what_to_declare)
+    {
+    case define_variables:
+      lf_printf (file, ")");
+      break;
+    case undef_variables:
+      break;
+    case declare_variables:
+      lf_printf (file, ";");
+      break;
+    }
+
+  ASSERT (reason != NULL && expression != NULL);
+  lf_printf (file, " /* %s - %s */\n", reason, expression);
+}
+
+
+void
+print_icache_body (lf *file,
+                  insn_entry *instruction,
+                  opcode_bits *expanded_bits,
+                  cache_entry *cache_rules,
+                  icache_decl_type what_to_declare,
+                  icache_body_type what_to_do,
+                  int nr_prefetched_words)
+{
+  /* extract instruction fields */
+  lf_printf (file, "/* Extraction: %s\n", instruction->name);
+  lf_printf (file, "     ");
+  switch (what_to_declare)
+    {
+    case define_variables:
+      lf_printf (file, "#define");
+      break;
+    case declare_variables:
+      lf_printf (file, "declare");
+      break;
+    case undef_variables:
+      lf_printf (file, "#undef");
+      break;
+    }
+  lf_printf (file, " ");
+  switch (what_to_do)
+    {
+    case get_values_from_icache:
+      lf_printf (file, "get-values-from-icache");
+      break;
+    case put_values_in_icache:
+      lf_printf (file, "put-values-in-icache");
+      break;
+    case both_values_and_icache:
+      lf_printf (file, "get-values-from-icache|put-values-in-icache");
+      break;
+    case do_not_use_icache:
+      lf_printf (file, "do-not-use-icache");
+      break;
+    }
+  lf_printf (file, "\n     ");
+  print_insn_words (file, instruction);
+  lf_printf(file, " */\n");
+  
+  /* pass zero - fetch from memory any missing instructions.
+
+     Some of the instructions will have already been fetched (in the
+     instruction array), others will still need fetching. */
+  switch (what_to_do)
+    {
+    case get_values_from_icache:
+      break;
+    case put_values_in_icache:
+    case both_values_and_icache:
+    case do_not_use_icache:
+      {
+       int word_nr;
+       switch (what_to_declare)
+         {
+         case undef_variables:
+           break;
+         case define_variables:
+         case declare_variables:
+           for (word_nr = nr_prefetched_words;
+                word_nr < instruction->nr_words;
+                word_nr++)
+             {
+               /* FIXME - should be using print_icache_extraction? */
+               lf_printf (file, "%sinstruction_word instruction_%d UNUSED = ",
+                          options.module.global.prefix.l,
+                          word_nr);
+               lf_printf (file, "IMEM%d_IMMED (cia, %d)",
+                          options.insn_bit_size, word_nr);
+               lf_printf (file, ";\n");
+             }
+         }
+      }
+    }
+
+  /* if putting the instruction words in the cache, define references
+     for them */
+  if (options.gen.insn_in_icache) {
+    /* FIXME: is the instruction_word type correct? */
+    print_icache_extraction (file,
+                            instruction->format_name,
+                            cache_value,
+                            "insn", /* name */
+                            "instruction_word", /* type */
+                            "instruction", /* expression */
+                            NULL, /* origin */
+                            NULL, /* line */
+                            NULL, NULL,
+                            what_to_declare,
+                            what_to_do);
+  }
+  lf_printf(file, "\n");
+
+  /* pass one - process instruction fields.
+
+     If there is no cache rule, the default is to enter the field into
+     the cache */
+  {
+    insn_word_entry *word;
+    for (word = instruction->words;
+        word != NULL;
+        word = word->next)
+      {
+       insn_field_entry *cur_field;
+       for (cur_field = word->first;
+            cur_field->first < options.insn_bit_size;
+            cur_field = cur_field->next)
+         {
+           if (cur_field->type == insn_field_string)
+             {
+               cache_entry *cache_rule;
+               cache_entry_type value_type = cache_value;
+               line_ref *value_line = instruction->line;
+               /* check the cache table to see if it contains a rule
+                  overriding the default cache action for an
+                  instruction field */
+               for (cache_rule = cache_rules;
+                    cache_rule != NULL;
+                    cache_rule = cache_rule->next)
+                 {
+                   if (filter_is_subset (instruction->field_names,
+                                         cache_rule->original_fields)
+                       && strcmp (cache_rule->name, cur_field->val_string) == 0)
+                     {
+                       value_type = cache_rule->entry_type;
+                       value_line = cache_rule->line;
+                       if (value_type == compute_value)
+                         {
+                           options.warning (cache_rule->line,
+                                            "instruction field of type `compute' changed to `cache'\n");
+                           cache_rule->entry_type = cache_value;
+                         }
+                       break;
+                     }
+                 }
+               /* Define an entry for the field within the
+                   instruction */
+               print_icache_extraction (file,
+                                        instruction->format_name,
+                                        value_type,
+                                        cur_field->val_string, /* name */
+                                        NULL, /* type */
+                                        NULL, /* expression */
+                                        cur_field->val_string, /* insn field */
+                                        value_line,
+                                        cur_field,
+                                        expanded_bits,
+                                        what_to_declare,
+                                        what_to_do);
+             }
+         }
+      }
+  }
+
+  /* pass two - any cache fields not processed above */
+  {
+    cache_entry *cache_rule;
+    for (cache_rule = cache_rules;
+        cache_rule != NULL;
+        cache_rule = cache_rule->next)
+      {
+       if (filter_is_subset (instruction->field_names,
+                             cache_rule->original_fields)
+           && !filter_is_member (instruction->field_names,
+                                 cache_rule->name))
+         {
+           char *single_field = filter_next (cache_rule->original_fields, "");
+           if (filter_next (cache_rule->original_fields, single_field) != NULL)
+             single_field = NULL;
+           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 */
+                                    expanded_bits,
+                                    what_to_declare,
+                                    what_to_do);
+         }
+      }
+  }
+
+  lf_print__internal_ref (file);
+}
+
+
+
+typedef struct _form_fields form_fields;
+struct _form_fields {
+  char *name;
+  filter *fields;
+  form_fields *next;
+};
+
+static form_fields *
+insn_table_cache_fields (insn_table *isa)
+{
+  form_fields *forms = NULL;
+  insn_entry *insn;
+  for (insn = isa->insns;
+       insn != NULL;
+       insn = insn->next) {
+    form_fields **form = &forms;
+    while (1)
+      {
+       if (*form == NULL)
+         {
+           /* new format name, add it */
+           form_fields *new_form = ZALLOC (form_fields);
+           new_form->name = insn->format_name;
+           filter_add (&new_form->fields, insn->field_names);
+           *form = new_form;
+           break;
+         }
+       else if (strcmp ((*form)->name, insn->format_name) == 0)
+         {
+           /* already present, add field names to the existing list */
+           filter_add (&(*form)->fields, insn->field_names);
+           break;
+         }
+       form = &(*form)->next;
+      }
+  }
+  return forms;
+}
+
+
+
+extern void
+print_icache_struct (lf *file,
+                    insn_table *isa,
+                    cache_entry *cache_rules)
+{
+  /* Create a list of all the different instruction formats with their
+     corresponding field names. */
+  form_fields *formats = insn_table_cache_fields (isa);
+  
+  lf_printf (file, "\n");
+  lf_printf (file, "#define WITH_%sIDECODE_CACHE_SIZE %d\n",
+            options.module.global.prefix.u,
+            (options.gen.icache ? options.gen.icache_size : 0));
+  lf_printf (file, "\n");
+  
+  /* create an instruction cache if being used */
+  if (options.gen.icache) {
+    lf_printf (file, "typedef struct _%sidecode_cache {\n",
+              options.module.global.prefix.l);
+    lf_indent (file, +2);
+    {
+      form_fields *format;
+      lf_printf (file, "unsigned_word address;\n");
+      lf_printf (file, "void *semantic;\n");
+      lf_printf (file, "union {\n");
+      lf_indent (file, +2);
+      for (format = formats;
+          format != NULL;
+          format = format->next)
+       {
+         lf_printf (file, "struct {\n");
+         lf_indent (file, +2);
+         {
+           cache_entry *cache_rule;
+           char *field;
+           /* space for any instruction words */
+           if (options.gen.insn_in_icache)
+             lf_printf (file, "instruction_word insn[%d];\n", isa->max_nr_words);
+           /* define an entry for any applicable cache rules */
+           for (cache_rule = cache_rules;
+                cache_rule != NULL;
+                cache_rule = cache_rule->next)
+             {
+               /* nb - sort of correct - should really check against
+                   individual instructions */
+               if (filter_is_subset (format->fields, cache_rule->original_fields))
+                 {
+                   char *memb;
+                   lf_printf (file, "%s %s;",
+                              (cache_rule->type == NULL
+                               ? "unsigned" 
+                               : cache_rule->type),
+                              cache_rule->name);
+                   lf_printf (file, " /*");
+                   for (memb = filter_next (cache_rule->original_fields, "");
+                        memb != NULL;
+                        memb = filter_next (cache_rule->original_fields, memb))
+                     {
+                       lf_printf (file, " %s", memb);
+                     }
+                   lf_printf (file, " */\n");
+                 }
+             }
+           /* define an entry for any fields not covered by a cache rule */
+           for (field = filter_next (format->fields, "");
+                field != NULL;
+                field = filter_next (format->fields, field))
+             {
+               cache_entry *cache_rule;
+               int found_rule = 0;
+               for (cache_rule = cache_rules;
+                    cache_rule != NULL;
+                    cache_rule = cache_rule->next)
+                 {
+                   if (strcmp (cache_rule->name, field) == 0)
+                     {
+                       found_rule = 1;
+                       break;
+                     }
+                 }
+               if (!found_rule)
+                 lf_printf (file, "unsigned %s; /* default */\n", field);
+             }
+         }
+         lf_indent (file, -2);
+         lf_printf (file, "} %s;\n", format->name);
+       }
+      lf_indent (file, -2);
+      lf_printf (file, "} crack;\n");
+    }
+    lf_indent (file, -2);
+    lf_printf (file, "} %sidecode_cache;\n", options.module.global.prefix.l);
+  }
+  else
+    {
+      /* alernativly, since no cache, emit a dummy definition for
+        idecode_cache so that code refering to the type can still compile */
+      lf_printf(file, "typedef void %sidecode_cache;\n",
+               options.module.global.prefix.l);
+    }
+  lf_printf (file, "\n");
+}
+
+
+
+static void
+print_icache_function (lf *file,
+                      insn_entry *instruction,
+                      opcode_bits *expanded_bits,
+                      insn_opcodes *opcodes,
+                      cache_entry *cache_rules,
+                      int nr_prefetched_words)
+{
+  int indent;
+
+  /* generate code to enter decoded instruction into the icache */
+  lf_printf(file, "\n");
+  lf_print__function_type_function (file, print_icache_function_type,
+                                   "EXTERN_ICACHE", "\n");
+  indent = print_function_name (file,
+                               instruction->name,
+                               instruction->format_name,
+                               NULL,
+                               expanded_bits,
+                               function_name_prefix_icache);
+  indent += lf_printf (file, " ");
+  lf_indent (file, +indent);
+  lf_printf (file, "(");
+  print_icache_function_formal (file, nr_prefetched_words);
+  lf_printf (file, ")\n");
+  lf_indent (file, -indent);
+  
+  /* function header */
+  lf_printf (file, "{\n");
+  lf_indent (file, +2);
+  
+  print_my_defines (file,
+                   instruction->name,
+                   instruction->format_name,
+                   expanded_bits);
+  print_itrace (file, instruction, 1/*putting-value-in-cache*/);
+  
+  print_idecode_validate (file, instruction, opcodes);
+  
+  lf_printf (file, "\n");
+  lf_printf (file, "{\n");
+  lf_indent (file, +2);
+  if (options.gen.semantic_icache)
+    lf_printf (file, "unsigned_word nia;\n");
+  print_icache_body (file,
+                    instruction,
+                    expanded_bits,
+                    cache_rules,
+                    (options.gen.direct_access
+                     ? define_variables
+                     : declare_variables),
+                    (options.gen.semantic_icache
+                     ? both_values_and_icache
+                     : put_values_in_icache),
+                    nr_prefetched_words);
+  
+  lf_printf (file, "\n");
+  lf_printf (file, "cache_entry->address = cia;\n");
+  lf_printf (file, "cache_entry->semantic = ");
+  print_function_name (file,
+                      instruction->name,
+                      instruction->format_name,
+                      NULL,
+                      expanded_bits,
+                      function_name_prefix_semantics);
+  lf_printf (file, ";\n");
+  lf_printf (file, "\n");
+
+  if (options.gen.semantic_icache) {
+    lf_printf (file, "/* semantic routine */\n");
+    print_semantic_body (file,
+                        instruction,
+                        expanded_bits,
+                        opcodes);
+    lf_printf (file, "return nia;\n");
+  }
+  
+  if (!options.gen.semantic_icache)
+    {
+      lf_printf (file, "/* return the function proper */\n");
+      lf_printf (file, "return ");
+      print_function_name (file,
+                          instruction->name,
+                          instruction->format_name,
+                          NULL,
+                          expanded_bits,
+                          function_name_prefix_semantics);
+      lf_printf (file, ";\n");
+    }
+  
+  if (options.gen.direct_access)
+    {
+      print_icache_body (file,
+                        instruction,
+                        expanded_bits,
+                        cache_rules,
+                        undef_variables,
+                        (options.gen.semantic_icache
+                         ? both_values_and_icache
+                         : put_values_in_icache),
+                        nr_prefetched_words);
+    }
+  
+  lf_indent (file, -2);
+  lf_printf (file, "}\n");
+  lf_indent (file, -2);
+  lf_printf (file, "}\n");
+}
+
+
+void
+print_icache_definition (lf *file,
+                        insn_entry *insn,
+                        opcode_bits *expanded_bits,
+                        insn_opcodes *opcodes,
+                        cache_entry *cache_rules,
+                        int nr_prefetched_words)
+{
+  print_icache_function (file,
+                        insn,
+                        expanded_bits,
+                        opcodes,
+                        cache_rules,
+                        nr_prefetched_words);
+}
+
+
+
+void
+print_icache_internal_function_declaration (lf *file,
+                                           function_entry *function,
+                                           void *data)
+{
+  ASSERT (options.gen.icache);
+  if (function->is_internal)
+    {
+      lf_printf (file, "\n");
+      lf_print__function_type_function (file, print_icache_function_type,
+                                       "INLINE_ICACHE", "\n");
+      print_function_name (file,
+                          function->name,
+                          NULL,
+                          NULL,
+                          NULL,
+                          function_name_prefix_icache);
+      lf_printf (file, "\n(");
+      print_icache_function_formal (file, 0);
+      lf_printf (file, ");\n");
+    }
+}
+
+
+void
+print_icache_internal_function_definition (lf *file,
+                                          function_entry *function,
+                                          void *data)
+{
+  ASSERT (options.gen.icache);
+  if (function->is_internal)
+    {
+      lf_printf (file, "\n");
+      lf_print__function_type_function (file, print_icache_function_type,
+                                       "INLINE_ICACHE", "\n");
+      print_function_name (file,
+                          function->name,
+                          NULL,
+                          NULL,
+                          NULL,
+                          function_name_prefix_icache);
+      lf_printf (file, "\n(");
+      print_icache_function_formal (file, 0);
+      lf_printf (file, ")\n");
+      lf_printf (file, "{\n");
+      lf_indent (file, +2);
+      lf_printf (file, "/* semantic routine */\n");
+      if (options.gen.semantic_icache)
+       {
+         lf_print__line_ref (file, function->code->line);
+         table_print_code (file, function->code);
+         lf_printf (file, "error (\"Internal function must longjump\\n\");\n");
+         lf_printf (file, "return 0;\n");
+       }
+      else
+       {
+         lf_printf (file, "return ");
+         print_function_name (file,
+                              function->name,
+                              NULL,
+                              NULL,
+                              NULL,
+                              function_name_prefix_semantics);
+         lf_printf (file, ";\n");
+       }
+      
+      lf_print__internal_ref (file);
+      lf_indent (file, -2);
+      lf_printf (file, "}\n");
+    }
+}
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