* elf64-ppc.c (dec_dynrel_count): Don't error when elf_gc_sweep_symbol
[external/binutils.git] / sim / igen / ld-insn.c
index a25ef04..1cbb9b8 100644 (file)
-/*  This file is part of the program psim.
+/* The IGEN simulator generator for GDB, the GNU Debugger.
 
-    Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
+   Copyright 2002-2013 Free Software Foundation, Inc.
 
-    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.
+   Contributed by Andrew Cagney.
 
-    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.
-    */
+   This file is part of GDB.
+
+   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 3 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, see <http://www.gnu.org/licenses/>.  */
 
 
 #include "misc.h"
 #include "lf.h"
 #include "table.h"
 #include "filter.h"
-#include "ld-decode.h"
-#include "ld-cache.h"
-#include "ld-insn.h"
-
 #include "igen.h"
+#include "ld-insn.h"
 
-static void
-update_depth(insn_table *entry,
-            lf *file,
-            void *data,
-            insn *instruction,
-            int depth)
-{
-  int *max_depth = (int*)data;
-  if (*max_depth < depth)
-    *max_depth = depth;
-}
-
-
-int
-insn_table_depth(insn_table *table)
-{
-  int depth = 0;
-  insn_table_traverse_tree(table,
-                          NULL,
-                          &depth,
-                          1,
-                          NULL, /*start*/
-                          update_depth,
-                          NULL, /*end*/
-                          NULL); /*padding*/
-  return depth;
-}
-
-
-static insn_fields *
-parse_insn_format(table_entry *entry,
-                 char *format)
+static insn_word_entry *
+parse_insn_word (line_ref *line, char *string, int word_nr)
 {
   char *chp;
-  insn_fields *fields = ZALLOC(insn_fields);
+  insn_word_entry *word = ZALLOC (insn_word_entry);
 
   /* create a leading sentinal */
-  fields->first = ZALLOC(insn_field);
-  fields->first->first = -1;
-  fields->first->last = -1;
-  fields->first->width = 0;
+  word->first = ZALLOC (insn_field_entry);
+  word->first->first = -1;
+  word->first->last = -1;
+  word->first->width = 0;
 
   /* and a trailing sentinal */
-  fields->last = ZALLOC(insn_field);
-  fields->last->first = insn_bit_size;
-  fields->last->last = insn_bit_size;
-  fields->last->width = 0;
+  word->last = ZALLOC (insn_field_entry);
+  word->last->first = options.insn_bit_size;
+  word->last->last = options.insn_bit_size;
+  word->last->width = 0;
 
   /* link them together */
-  fields->first->next = fields->last;
-  fields->last->prev = fields->first;
+  word->first->next = word->last;
+  word->last->prev = word->first;
 
   /* now work through the formats */
-  chp = format;
-
-  while (*chp != '\0') {
-    char *start_pos;
-    char *start_val;
-    int strlen_val;
-    int strlen_pos;
-    insn_field *new_field;
-
-    /* skip leading spaces */
-    while (isspace(*chp) && *chp != '\n')
-      chp++;
-
-    /* break out the first field (if present) */
-    start_pos = chp;
-    while (*chp != '\0'
-          && !isspace(*chp)
-          && *chp != '.'
-          && *chp != ',') {
-      chp++;
-    }
-    strlen_pos = chp - start_pos;
-
-    /* break out the second field (if present) */
-    if (*chp != '.') {
-      /* assume that the value length specifies the nr of bits */
-      start_val = start_pos;
-      strlen_val = strlen_pos;
-      start_pos = "";
-      strlen_pos = 0;
-    }
-    else {
-      chp++;
-      start_val = chp;
-      if (*chp == '/' || *chp == '*') {
-       do {
-         chp++;
-       } while (*chp == '/' || *chp == '*');
-      }
-      else if (isalpha(*start_val)) {
-       do {
-         chp++;
-       } while (isalnum(*chp) || *chp == '_');
-      }
-      else if (isdigit(*start_val)) {
-       do {
+  chp = skip_spaces (string);
+
+  while (*chp != '\0')
+    {
+      char *start_pos;
+      int strlen_pos;
+      char *start_val;
+      int strlen_val;
+      insn_field_entry *new_field;
+
+      /* create / link in the new field */
+      new_field = ZALLOC (insn_field_entry);
+      new_field->next = word->last;
+      new_field->prev = word->last->prev;
+      new_field->next->prev = new_field;
+      new_field->prev->next = new_field;
+      new_field->word_nr = word_nr;
+
+      /* break out the first field (if present) */
+      start_pos = chp;
+      chp = skip_to_separator (chp, ".,!");
+      strlen_pos = back_spaces (start_pos, chp) - start_pos;
+
+      /* break out the second field (if present) */
+      if (*chp != '.')
+       {
+         /* assume what was specified was the value (and not the start
+            position).  Assume the value length implicitly specifies
+            the number of bits */
+         start_val = start_pos;
+         strlen_val = strlen_pos;
+         start_pos = "";
+         strlen_pos = 0;
+       }
+      else
+       {
+         chp++;                /* skip `.' */
+         chp = skip_spaces (chp);
+         start_val = chp;
+         if (*chp == '/' || *chp == '*')
+           {
+             do
+               {
+                 chp++;
+               }
+             while (*chp == '/' || *chp == '*');
+           }
+         else if (isalpha (*start_val))
+           {
+             do
+               {
+                 chp++;
+               }
+             while (isalnum (*chp) || *chp == '_');
+           }
+         else if (isdigit (*start_val))
+           {
+             do
+               {
+                 chp++;
+               }
+             while (isalnum (*chp));
+           }
+         strlen_val = chp - start_val;
+         chp = skip_spaces (chp);
+       }
+      if (strlen_val == 0)
+       error (line, "Empty value field\n");
+
+      /* break out any conditional fields - { [ "!" | "=" [ <value> | <field-name> } */
+      while (*chp == '!' || *chp == '=')
+       {
+         char *start;
+         char *end;
+         int len;
+         insn_field_cond *new_cond = ZALLOC (insn_field_cond);
+
+         /* determine the conditional test */
+         switch (*chp)
+           {
+           case '=':
+             new_cond->test = insn_field_cond_eq;
+             break;
+           case '!':
+             new_cond->test = insn_field_cond_ne;
+             break;
+           default:
+             ASSERT (0);
+           }
+
+         /* save the value */
          chp++;
-       } while (isalnum(*chp));
-      }
-      strlen_val = chp - start_val;
-    }
+         chp = skip_spaces (chp);
+         start = chp;
+         chp = skip_to_separator (chp, "+,:!=");
+         end = back_spaces (start, chp);
+         len = end - start;
+         if (len == 0)
+           error (line, "Missing or invalid conditional value\n");
+         new_cond->string = NZALLOC (char, len + 1);
+         strncpy (new_cond->string, start, len);
+
+         /* determine the conditional type */
+         if (isdigit (*start))
+           {
+             /* [ "!" | "=" ] <value> */
+             new_cond->type = insn_field_cond_value;
+             new_cond->value = a2i (new_cond->string);
+           }
+         else
+           {
+             /* [ "!" | "=" ] <field>  - check field valid */
+             new_cond->type = insn_field_cond_field;
+             /* new_cond->field is determined in later */
+           }
+
+         /* Only a single `=' is permitted. */
+         if ((new_cond->test == insn_field_cond_eq
+              && new_field->conditions != NULL)
+             || (new_field->conditions != NULL
+                 && new_field->conditions->test == insn_field_cond_eq))
+           error (line, "Only single conditional when `=' allowed\n");
+
+         /* insert it */
+         {
+           insn_field_cond **last = &new_field->conditions;
+           while (*last != NULL)
+             last = &(*last)->next;
+           *last = new_cond;
+         }
+       }
 
-    /* skip trailing spaces */
-    while (isspace(*chp))
-      chp++;
+      /* NOW verify that the field was finished */
+      if (*chp == ',')
+       {
+         chp = skip_spaces (chp + 1);
+         if (*chp == '\0')
+           error (line, "empty field\n");
+       }
+      else if (*chp != '\0')
+       {
+         error (line, "Missing field separator\n");
+       }
 
-    /* verify field finished */
-    if (*chp == ',')
-      chp++;
-    else if (*chp != '\0' || strlen_val == 0) {
-      error("%s:%d: missing field terminator at %s\n",
-           entry->file_name, entry->line_nr, chp);
-      break;
-    }
-
-    /* create a new field and insert it */
-    new_field = ZALLOC(insn_field);
-    new_field->next = fields->last;
-    new_field->prev = fields->last->prev;
-    new_field->next->prev = new_field;
-    new_field->prev->next = new_field;
-
-    /* the value */
-    new_field->val_string = (char*)zalloc(strlen_val+1);
-    strncpy(new_field->val_string, start_val, strlen_val);
-    if (isdigit(new_field->val_string[0])) {
-      if (strlen_pos == 0) {
-       insn_int val = 0;
-       int i;
-       for (i = 0; i < strlen_val; i++) {
-         if (start_val[i] != '0' && start_val[i] != '1')
-           error("%s:%d: invalid binary field %s\n",
-                 entry->file_name, entry->line_nr, start_val);
-         val = (val << 1) + (start_val[i] == '1');
+      /* copy the value */
+      new_field->val_string = NZALLOC (char, strlen_val + 1);
+      strncpy (new_field->val_string, start_val, strlen_val);
+      if (isdigit (new_field->val_string[0]))
+       {
+         if (strlen_pos == 0)
+           {
+             /* when the length/pos field is omited, an integer field
+                is always binary */
+             unsigned64 val = 0;
+             int i;
+             for (i = 0; i < strlen_val; i++)
+               {
+                 if (new_field->val_string[i] != '0'
+                     && new_field->val_string[i] != '1')
+                   error (line, "invalid binary field %s\n",
+                          new_field->val_string);
+                 val = (val << 1) + (new_field->val_string[i] == '1');
+               }
+             new_field->val_int = val;
+             new_field->type = insn_field_int;
+           }
+         else
+           {
+             new_field->val_int = a2i (new_field->val_string);
+             new_field->type = insn_field_int;
+           }
+       }
+      else if (new_field->val_string[0] == '/')
+       {
+         new_field->type = insn_field_reserved;
+       }
+      else if (new_field->val_string[0] == '*')
+       {
+         new_field->type = insn_field_wild;
+       }
+      else
+       {
+         new_field->type = insn_field_string;
+         if (filter_is_member (word->field_names, new_field->val_string))
+           error (line, "Field name %s is duplicated\n",
+                  new_field->val_string);
+         filter_parse (&word->field_names, new_field->val_string);
+       }
+      if (new_field->type != insn_field_string
+         && new_field->conditions != NULL)
+       error (line, "Conditionals can only be applied to named fields\n");
+
+      /* the copy the position */
+      new_field->pos_string = NZALLOC (char, strlen_pos + 1);
+      strncpy (new_field->pos_string, start_pos, strlen_pos);
+      if (strlen_pos == 0)
+       {
+         new_field->first = new_field->prev->last + 1;
+         if (new_field->first == 0     /* first field */
+             && *chp == '\0'   /* no further fields */
+             && new_field->type == insn_field_string)
+           {
+             /* A single string without any position, assume that it
+                represents the entire instruction word */
+             new_field->width = options.insn_bit_size;
+           }
+         else
+           {
+             /* No explicit width/position, assume value implicitly
+                supplies the width */
+             new_field->width = strlen_val;
+           }
+         new_field->last = new_field->first + new_field->width - 1;
+         if (new_field->last >= options.insn_bit_size)
+           error (line, "Bit position %d exceed instruction bit size (%d)\n",
+                  new_field->last, options.insn_bit_size);
+       }
+      else if (options.insn_specifying_widths)
+       {
+         new_field->first = new_field->prev->last + 1;
+         new_field->width = a2i (new_field->pos_string);
+         new_field->last = new_field->first + new_field->width - 1;
+         if (new_field->last >= options.insn_bit_size)
+           error (line, "Bit position %d exceed instruction bit size (%d)\n",
+                  new_field->last, options.insn_bit_size);
+       }
+      else
+       {
+         new_field->first = target_a2i (options.hi_bit_nr,
+                                        new_field->pos_string);
+         new_field->last = new_field->next->first - 1; /* guess */
+         new_field->width = new_field->last - new_field->first + 1;    /* guess */
+         new_field->prev->last = new_field->first - 1; /*fix */
+         new_field->prev->width = new_field->first - new_field->prev->first;   /*fix */
        }
-       new_field->val_int = val;
-       new_field->is_int = 1;
-      }
-      else {
-       new_field->val_int = a2i(new_field->val_string);
-       new_field->is_int = 1;
-      }
-    }
-    else if (new_field->val_string[0] == '/'
-            || new_field->val_string[0] == '*') {
-      new_field->is_slash = 1;
-    }
-    else {
-      new_field->is_string = 1;
-    }
-    
-    /* the pos */
-    new_field->pos_string = (char*)zalloc(strlen_pos+1);
-    strncpy(new_field->pos_string, start_pos, strlen_pos);
-    if (strlen_pos == 0) {
-      new_field->first = new_field->prev->last + 1;
-      new_field->width = strlen_val;
-      new_field->last = new_field->first + new_field->width - 1;
-      if (new_field->last >= insn_bit_size)
-       error("%s:%d: Bit position %d exceed instruction bit size (%d)",
-             entry->file_name, entry->line_nr,
-             new_field->last, insn_bit_size);
-    }
-    else if (insn_specifying_widths) {
-      new_field->first = new_field->prev->last + 1;
-      new_field->width = a2i(new_field->pos_string);
-      new_field->last = new_field->first + new_field->width - 1;
-      if (new_field->last >= insn_bit_size)
-       error("%s:%d: Bit position %d exceed instruction bit size (%d)",
-             entry->file_name, entry->line_nr,
-             new_field->last, insn_bit_size);
-    }
-    else {
-      new_field->first = target_a2i(hi_bit_nr, new_field->pos_string);
-      new_field->last = new_field->next->first - 1; /* guess */
-      new_field->width = new_field->last - new_field->first + 1; /* guess */
-      new_field->prev->last = new_field->first - 1; /*fix*/
-      new_field->prev->width = new_field->first - new_field->prev->first; /*fix*/
     }
-  }
 
-  /* fiddle first/last so that the sentinals `disapear' */
-  ASSERT(fields->first->last < 0);
-  ASSERT(fields->last->first >= insn_bit_size);
-  fields->first = fields->first->next;
-  fields->last = fields->last->prev;
+  /* fiddle first/last so that the sentinals disapear */
+  ASSERT (word->first->last < 0);
+  ASSERT (word->last->first >= options.insn_bit_size);
+  word->first = word->first->next;
+  word->last = word->last->prev;
+
+  /* check that the last field goes all the way to the last bit */
+  if (word->last->last != options.insn_bit_size - 1)
+    {
+      if (options.warn.width)
+       options.warning (line, "Instruction format is not %d bits wide\n",
+                        options.insn_bit_size);
+      word->last->last = options.insn_bit_size - 1;
+    }
 
   /* now go over this again, pointing each bit position at a field
      record */
   {
-    int i;
-    insn_field *field;
-    field = fields->first;
-    for (i = 0; i < insn_bit_size; i++) {
-      while (field->last < i)
-       field = field->next;
-      fields->bits[i] = field;
-    }
+    insn_field_entry *field;
+    for (field = word->first;
+        field->last < options.insn_bit_size; field = field->next)
+      {
+       int i;
+       for (i = field->first; i <= field->last; i++)
+         {
+           word->bit[i] = ZALLOC (insn_bit_entry);
+           word->bit[i]->field = field;
+           switch (field->type)
+             {
+             case insn_field_invalid:
+               ASSERT (0);
+               break;
+             case insn_field_int:
+               word->bit[i]->mask = 1;
+               word->bit[i]->value = ((field->val_int
+                                       & ((insn_uint) 1 <<
+                                          (field->last - i))) != 0);
+             case insn_field_reserved:
+             case insn_field_wild:
+             case insn_field_string:
+               /* if we encounter a constant conditional, encode
+                  their bit value. */
+               if (field->conditions != NULL
+                   && field->conditions->test == insn_field_cond_eq
+                   && field->conditions->type == insn_field_cond_value)
+                 {
+                   word->bit[i]->mask = 1;
+                   word->bit[i]->value = ((field->conditions->value
+                                           & ((insn_uint) 1 <<
+                                              (field->last - i))) != 0);
+                 }
+               break;
+             }
+         }
+      }
   }
 
-  /* go over each of the fields, and compute a `value' for the insn */
-  {
-    insn_field *field;
-    fields->value = 0;
-    for (field = fields->first;
-        field->last < insn_bit_size;
-        field = field->next) {
-      fields->value <<= field->width;
-      if (field->is_int)
-       fields->value |= field->val_int;
-    }
-  }
-  return fields;
+  return word;
 }
 
 
 static void
-model_table_insert(insn_table *table,
-                  table_entry *file_entry)
+parse_insn_words (insn_entry * insn, char *formats)
 {
-  int len;
-
-  /* create a new model */
-  model *new_model = ZALLOC(model);
+  insn_word_entry **last_word = &insn->words;
+  char *chp;
 
-  new_model->name = file_entry->fields[model_identifer];
-  new_model->printable_name = file_entry->fields[model_name];
-  new_model->insn_default = file_entry->fields[model_default];
+  /* now work through the formats */
+  insn->nr_words = 0;
+  chp = formats;
+
+  while (1)
+    {
+      char *start_pos;
+      char *end_pos;
+      int strlen_pos;
+      char *format;
+      insn_word_entry *new_word;
+
+      /* skip leading spaces */
+      chp = skip_spaces (chp);
+
+      /* break out the format */
+      start_pos = chp;
+      chp = skip_to_separator (chp, "+");
+      end_pos = back_spaces (start_pos, chp);
+      strlen_pos = end_pos - start_pos;
+
+      /* check that something was there */
+      if (strlen_pos == 0)
+       error (insn->line, "missing or empty instruction format\n");
+
+      /* parse the field */
+      format = NZALLOC (char, strlen_pos + 1);
+      strncpy (format, start_pos, strlen_pos);
+      new_word = parse_insn_word (insn->line, format, insn->nr_words);
+      insn->nr_words++;
+      if (filter_is_common (insn->field_names, new_word->field_names))
+       error (insn->line, "Field name duplicated between two words\n");
+      filter_add (&insn->field_names, new_word->field_names);
+
+      /* insert it */
+      *last_word = new_word;
+      last_word = &new_word->next;
+
+      /* last format? */
+      if (*chp == '\0')
+       break;
+      ASSERT (*chp == '+');
+      chp++;
+    }
 
-  while (*new_model->insn_default && isspace(*new_model->insn_default))
-    new_model->insn_default++;
+  /* create a quick access array (indexed by word) of the same structure */
+  {
+    int i;
+    insn_word_entry *word;
+    insn->word = NZALLOC (insn_word_entry *, insn->nr_words + 1);
+    for (i = 0, word = insn->words;
+        i < insn->nr_words; i++, word = word->next)
+      insn->word[i] = word;
+  }
 
-  len = strlen(new_model->insn_default);
-  if (max_model_fields_len < len)
-    max_model_fields_len = len;
+  /* Go over all fields that have conditionals refering to other
+     fields.  Link the fields up.  Verify that the two fields have the
+     same size. Verify that the two fields are different */
+  {
+    int i;
+    for (i = 0; i < insn->nr_words; i++)
+      {
+       insn_word_entry *word = insn->word[i];
+       insn_field_entry *f;
+       for (f = word->first; f->last < options.insn_bit_size; f = f->next)
+         {
+           insn_field_cond *cond;
+           for (cond = f->conditions; cond != NULL; cond = cond->next)
+             {
+               if (cond->type == insn_field_cond_field)
+                 {
+                   int j;
+                   if (strcmp (cond->string, f->val_string) == 0)
+                     error (insn->line,
+                            "Conditional `%s' of field `%s' refers to its self\n",
+                            cond->string, f->val_string);
+                   for (j = 0; j <= i && cond->field == NULL; j++)
+                     {
+                       insn_word_entry *refered_word = insn->word[j];
+                       insn_field_entry *refered_field;
+                       for (refered_field = refered_word->first;
+                            refered_field != NULL && cond->field == NULL;
+                            refered_field = refered_field->next)
+                         {
+                           if (refered_field->type == insn_field_string
+                               && strcmp (refered_field->val_string,
+                                          cond->string) == 0)
+                             {
+                               /* found field being refered to by conditonal */
+                               cond->field = refered_field;
+                               /* check refered to and this field are
+                                  the same size */
+                               if (f->width != refered_field->width)
+                                 error (insn->line,
+                                        "Conditional `%s' of field `%s' should be of size %s\n",
+                                        cond->string, f->val_string,
+                                        refered_field->width);
+                             }
+                         }
+                     }
+                   if (cond->field == NULL)
+                     error (insn->line,
+                            "Conditional `%s' of field `%s' not yet defined\n",
+                            cond->string, f->val_string);
+                 }
+             }
+         }
+      }
+  }
 
-  /* append it to the end of the model list */
-  if (last_model)
-    last_model->next = new_model;
-  else
-    models = new_model;
-  last_model = new_model;
 }
 
-static void
-model_table_insert_specific(insn_table *table,
-                           table_entry *file_entry,
-                           insn **start_ptr,
-                           insn **end_ptr)
-{
-  insn *ptr = ZALLOC(insn);
-  ptr->file_entry = file_entry;
-  if (*end_ptr)
-    (*end_ptr)->next = ptr;
-  else
-    (*start_ptr) = ptr;
-  (*end_ptr) = ptr;
+typedef enum
+{
+  unknown_record = 0,
+  insn_record,                 /* default */
+  code_record,
+  cache_record,
+  compute_record,
+  scratch_record,
+  option_record,
+  string_function_record,
+  function_record,
+  internal_record,
+  define_record,
+  include_record,
+  model_processor_record,
+  model_macro_record,
+  model_data_record,
+  model_static_record,
+  model_function_record,
+  model_internal_record,
 }
+insn_record_type;
+
+static const name_map insn_type_map[] = {
+  {"option", option_record},
+  {"cache", cache_record},
+  {"compute", compute_record},
+  {"scratch", scratch_record},
+  {"define", define_record},
+  {"include", include_record},
+  {"%s", string_function_record},
+  {"function", function_record},
+  {"internal", internal_record},
+  {"model", model_processor_record},
+  {"model-macro", model_macro_record},
+  {"model-data", model_data_record},
+  {"model-static", model_static_record},
+  {"model-internal", model_internal_record},
+  {"model-function", model_function_record},
+  {NULL, insn_record},
+};
 
 
-static void
-insn_table_insert_function(insn_table *table,
-                          table_entry *file_entry)
+static int
+record_is_old (table_entry *entry)
 {
-  /* create a new function */
-  insn *new_function = ZALLOC(insn);
-  new_function->file_entry = file_entry;
-
-  /* append it to the end of the function list */
-  if (table->last_function)
-    table->last_function->next = new_function;
-  else
-    table->functions = new_function;
-  table->last_function = new_function;
+  if (entry->nr_fields > record_type_field
+      && strlen (entry->field[record_type_field]) == 0)
+    return 1;
+  return 0;
 }
 
-extern void
-insn_table_insert_insn(insn_table *table,
-                      table_entry *file_entry,
-                      insn_fields *fields)
+static insn_record_type
+record_type (table_entry *entry)
 {
-  insn **ptr_to_cur_insn = &table->insns;
-  insn *cur_insn = *ptr_to_cur_insn;
-  table_model_entry *insn_model_ptr;
-  model *model_ptr;
-
-  /* create a new instruction */
-  insn *new_insn = ZALLOC(insn);
-  new_insn->file_entry = file_entry;
-  new_insn->fields = fields;
-
-  /* Check out any model information returned to make sure the model
-     is correct.  */
-  for(insn_model_ptr = file_entry->model_first; insn_model_ptr; insn_model_ptr = insn_model_ptr->next) {
-    char *name = insn_model_ptr->fields[insn_model_name];
-    int len = strlen (insn_model_ptr->fields[insn_model_fields]);
-
-    while (len > 0 && isspace(*insn_model_ptr->fields[insn_model_fields])) {
-      len--;
-      insn_model_ptr->fields[insn_model_fields]++;
+  switch (entry->type)
+    {
+    case table_code_entry:
+      return code_record;
+
+    case table_colon_entry:
+      if (record_is_old (entry))
+       {
+         /* old-format? */
+         if (entry->nr_fields > old_record_type_field)
+           {
+             int i = name2i (entry->field[old_record_type_field],
+                             insn_type_map);
+             return i;
+           }
+         else
+           {
+             return unknown_record;
+           }
+       }
+      else if (entry->nr_fields > record_type_field
+              && entry->field[0][0] == '\0')
+       {
+         /* new-format? */
+         int i = name2i (entry->field[record_type_field],
+                         insn_type_map);
+         return i;
+       }
+      else
+       return insn_record;     /* default */
     }
+  return unknown_record;
+}
 
-    if (max_model_fields_len < len)
-      max_model_fields_len = len;
-
-    for(model_ptr = models; model_ptr; model_ptr = model_ptr->next) {
-      if (strcmp(name, model_ptr->printable_name) == 0) {
+static int
+record_prefix_is (table_entry *entry, char ch, int nr_fields)
+{
+  if (entry->type != table_colon_entry)
+    return 0;
+  if (entry->nr_fields < nr_fields)
+    return 0;
+  if (entry->field[0][0] != ch && ch != '\0')
+    return 0;
+  return 1;
+}
 
-       /* Replace the name field with that of the global model, so that when we
-          want to print it out, we can just compare pointers.  */
-       insn_model_ptr->fields[insn_model_name] = model_ptr->printable_name;
-       break;
-      }
+static table_entry *
+parse_model_data_record (insn_table *isa,
+                        table *file,
+                        table_entry *record,
+                        int nr_fields, model_data **list)
+{
+  table_entry *model_record = record;
+  table_entry *code_record = NULL;
+  model_data *new_data;
+  if (record->nr_fields < nr_fields)
+    error (record->line, "Incorrect number of fields\n");
+  record = table_read (file);
+  if (record->type == table_code_entry)
+    {
+      code_record = record;
+      record = table_read (file);
+    }
+  /* create the new data record */
+  new_data = ZALLOC (model_data);
+  new_data->line = model_record->line;
+  filter_parse (&new_data->flags,
+               model_record->field[record_filter_flags_field]);
+  new_data->entry = model_record;
+  new_data->code = code_record;
+  /* append it if not filtered out */
+  if (!is_filtered_out (options.flags_filter,
+                       model_record->field[record_filter_flags_field])
+      && !is_filtered_out (options.model_filter,
+                          model_record->field[record_filter_models_field]))
+    {
+      while (*list != NULL)
+       list = &(*list)->next;
+      *list = new_data;
     }
+  return record;
+}
 
-    if (!model_ptr)
-      error("%s:%d: machine model `%s' was not known about\n",
-           file_entry->file_name, file_entry->line_nr, name);
-  }
 
-  /* insert it according to the order of the fields */
-  while (cur_insn != NULL
-        && new_insn->fields->value >= cur_insn->fields->value) {
-    ptr_to_cur_insn = &cur_insn->next;
-    cur_insn = *ptr_to_cur_insn;
-  }
+typedef enum
+{
+  insn_bit_size_option = 1,
+  insn_specifying_widths_option,
+  hi_bit_nr_option,
+  flags_filter_option,
+  model_filter_option,
+  multi_sim_option,
+  format_names_option,
+  gen_delayed_branch,
+  unknown_option,
+}
+option_names;
+
+static const name_map option_map[] = {
+  {"insn-bit-size", insn_bit_size_option},
+  {"insn-specifying-widths", insn_specifying_widths_option},
+  {"hi-bit-nr", hi_bit_nr_option},
+  {"flags-filter", flags_filter_option},
+  {"model-filter", model_filter_option},
+  {"multi-sim", multi_sim_option},
+  {"format-names", format_names_option},
+  {"gen-delayed-branch", gen_delayed_branch},
+  {NULL, unknown_option},
+};
+
+static table_entry *
+parse_include_record (table *file, table_entry *record)
+{
+  /* parse the include record */
+  if (record->nr_fields < nr_include_fields)
+    error (record->line, "Incorrect nr fields for include record\n");
+  /* process it */
+  if (!is_filtered_out (options.flags_filter,
+                       record->field[record_filter_flags_field])
+      && !is_filtered_out (options.model_filter,
+                          record->field[record_filter_models_field]))
+    {
+      table_push (file, record->line, options.include,
+                 record->field[include_filename_field]);
+    }
+  /* nb: can't read next record until after the file has been pushed */
+  record = table_read (file);
+  return record;
+}
 
-  new_insn->next = cur_insn;
-  *ptr_to_cur_insn = new_insn;
 
-  table->nr_insn++;
+static table_entry *
+parse_option_record (table *file, table_entry *record)
+{
+  table_entry *option_record;
+  /* parse the option record */
+  option_record = record;
+  if (record->nr_fields < nr_option_fields)
+    error (record->line, "Incorrect nr of fields for option record\n");
+  record = table_read (file);
+  /* process it */
+  if (!is_filtered_out (options.flags_filter,
+                       option_record->field[record_filter_flags_field])
+      && !is_filtered_out (options.model_filter,
+                          option_record->field[record_filter_models_field]))
+    {
+      char *name = option_record->field[option_name_field];
+      option_names option = name2i (name, option_map);
+      char *value = option_record->field[option_value_field];
+      switch (option)
+       {
+       case insn_bit_size_option:
+         {
+           options.insn_bit_size = a2i (value);
+           if (options.insn_bit_size < 0
+               || options.insn_bit_size > max_insn_bit_size)
+             error (option_record->line,
+                    "Instruction bit size out of range\n");
+           if (options.hi_bit_nr != options.insn_bit_size - 1
+               && options.hi_bit_nr != 0)
+             error (option_record->line,
+                    "insn-bit-size / hi-bit-nr conflict\n");
+           break;
+         }
+       case insn_specifying_widths_option:
+         {
+           options.insn_specifying_widths = a2i (value);
+           break;
+         }
+       case hi_bit_nr_option:
+         {
+           options.hi_bit_nr = a2i (value);
+           if (options.hi_bit_nr != 0
+               && options.hi_bit_nr != options.insn_bit_size - 1)
+             error (option_record->line,
+                    "hi-bit-nr / insn-bit-size conflict\n");
+           break;
+         }
+       case flags_filter_option:
+         {
+           filter_parse (&options.flags_filter, value);
+           break;
+         }
+       case model_filter_option:
+         {
+           filter_parse (&options.model_filter, value);
+           break;
+         }
+       case multi_sim_option:
+         {
+           options.gen.multi_sim = a2i (value);
+           break;
+         }
+       case format_names_option:
+         {
+           filter_parse (&options.format_name_filter, value);
+           break;
+         }
+       case gen_delayed_branch:
+         {
+           options.gen.delayed_branch = a2i (value);
+           break;
+         }
+       case unknown_option:
+         {
+           error (option_record->line, "Unknown option - %s\n", name);
+           break;
+         }
+       }
+    }
+  return record;
 }
 
 
-
-insn_table *
-load_insn_table(const char *file_name,
-               decode_table *decode_rules,
-               filter *filters)
+static table_entry *
+parse_function_record (table *file,
+                      table_entry *record,
+                      function_entry ** list,
+                      function_entry ** list_entry,
+                      int is_internal, model_table *model)
 {
-  table *file = table_open(file_name, nr_insn_table_fields, nr_insn_model_table_fields);
-  insn_table *table = ZALLOC(insn_table);
-  table_entry *file_entry;
-  table->opcode_rule = decode_rules;
-
-  while ((file_entry = table_entry_read(file)) != NULL) {
-    if (it_is("function", file_entry->fields[insn_flags])
-       || it_is("internal", file_entry->fields[insn_flags])) {
-      insn_table_insert_function(table, file_entry);
+  function_entry *new_function;
+  new_function = ZALLOC (function_entry);
+  new_function->line = record->line;
+  new_function->is_internal = is_internal;
+  /* parse the function header */
+  if (record_is_old (record))
+    {
+      if (record->nr_fields < nr_old_function_fields)
+       error (record->line, "Missing fields from (old) function record\n");
+      new_function->type = record->field[old_function_typedef_field];
+      new_function->type = record->field[old_function_typedef_field];
+      if (record->nr_fields > old_function_param_field)
+       new_function->param = record->field[old_function_param_field];
+      new_function->name = record->field[old_function_name_field];
     }
-    else if (it_is("model", file_entry->fields[insn_flags])) {
-      model_table_insert(table, file_entry);
+  else
+    {
+      if (record->nr_fields < nr_function_fields)
+       error (record->line, "Missing fields from function record\n");
+      filter_parse (&new_function->flags,
+                   record->field[record_filter_flags_field]);
+      filter_parse (&new_function->models,
+                   record->field[record_filter_models_field]);
+      new_function->type = record->field[function_typedef_field];
+      new_function->param = record->field[function_param_field];
+      new_function->name = record->field[function_name_field];
     }
-    else if (it_is("model-macro", file_entry->fields[insn_flags])) {
-      model_table_insert_specific(table, file_entry, &model_macros, &last_model_macro);
+  record = table_read (file);
+  /* parse any function-model records */
+  while (record != NULL
+        && record_prefix_is (record, '*', nr_function_model_fields))
+    {
+      char *model_name = record->field[function_model_name_field] + 1; /*skip `*' */
+      filter_parse (&new_function->models, model_name);
+      if (!filter_is_subset (model->processors, new_function->models))
+       {
+         error (record->line, "machine model `%s' undefined\n", model_name);
+       }
+      record = table_read (file);
     }
-    else if (it_is("model-function", file_entry->fields[insn_flags])) {
-      model_table_insert_specific(table, file_entry, &model_functions, &last_model_function);
+  /* parse the function body */
+  if (record->type == table_code_entry)
+    {
+      new_function->code = record;
+      record = table_read (file);
     }
-    else if (it_is("model-internal", file_entry->fields[insn_flags])) {
-      model_table_insert_specific(table, file_entry, &model_internal, &last_model_internal);
+  /* insert it */
+  if (!filter_is_subset (options.flags_filter, new_function->flags))
+    {
+      if (options.warn.discard)
+       notify (new_function->line, "Discarding function %s - filter flags\n",
+               new_function->name);
     }
-    else if (it_is("model-static", file_entry->fields[insn_flags])) {
-      model_table_insert_specific(table, file_entry, &model_static, &last_model_static);
+  else if (new_function->models != NULL
+          && !filter_is_common (options.model_filter, new_function->models))
+    {
+      if (options.warn.discard)
+       notify (new_function->line,
+               "Discarding function %s - filter models\n",
+               new_function->name);
     }
-    else if (it_is("model-data", file_entry->fields[insn_flags])) {
-      model_table_insert_specific(table, file_entry, &model_data, &last_model_data);
+  else
+    {
+      while (*list != NULL)
+       list = &(*list)->next;
+      *list = new_function;
+      if (list_entry != NULL)
+       *list_entry = new_function;
     }
-    else {
-      insn_fields *fields;
-      /* skip instructions that aren't relevant to the mode */
-      if (is_filtered_out(file_entry->fields[insn_flags], filters)) {
-       fprintf(stderr, "Dropping %s - %s\n",
-               file_entry->fields[insn_name],
-               file_entry->fields[insn_flags]);
-      }
-      else {
-       /* create/insert the new instruction */
-       fields = parse_insn_format(file_entry,
-                                  file_entry->fields[insn_format]);
-       insn_table_insert_insn(table, file_entry, fields);
-      }
+  /* done */
+  return record;
+}
+
+static void
+parse_insn_model_record (table *file,
+                        table_entry *record,
+                        insn_entry * insn, model_table *model)
+{
+  insn_model_entry **last_insn_model;
+  insn_model_entry *new_insn_model = ZALLOC (insn_model_entry);
+  /* parse it */
+  new_insn_model->line = record->line;
+  if (record->nr_fields > insn_model_unit_data_field)
+    new_insn_model->unit_data = record->field[insn_model_unit_data_field];
+  new_insn_model->insn = insn;
+  /* parse the model names, verify that all were defined */
+  new_insn_model->names = NULL;
+  filter_parse (&new_insn_model->names,
+               record->field[insn_model_name_field] + 1 /*skip `*' */ );
+  if (new_insn_model->names == NULL)
+    {
+      /* No processor names - a generic model entry, enter it into all
+         the non-empty fields */
+      int index;
+      for (index = 0; index < model->nr_models; index++)
+       if (insn->model[index] == 0)
+         {
+           insn->model[index] = new_insn_model;
+         }
+      /* also add the complete processor set to this processor's set */
+      filter_add (&insn->processors, model->processors);
     }
-  }
-  return table;
-}
-
-
-extern void
-insn_table_traverse_tree(insn_table *table,
-                        lf *file,
-                        void *data,
-                        int depth,
-                        leaf_handler *start,
-                        insn_handler *leaf,
-                        leaf_handler *end,
-                        padding_handler *padding)
-{
-  insn_table *entry;
-  int entry_nr;
-  
-  ASSERT(table != NULL
-        && table->opcode != NULL
-        && table->nr_entries > 0
-        && table->entries != 0);
-
-  if (start != NULL && depth >= 0)
-    start(table, file, data, depth);
-
-  for (entry_nr = 0, entry = table->entries;
-       entry_nr < (table->opcode->is_boolean
-                  ? 2
-                  : (1 << (table->opcode->last - table->opcode->first + 1)));
-       entry_nr ++) {
-    if (entry == NULL
-       || (!table->opcode->is_boolean
-           && entry_nr < entry->opcode_nr)) {
-      if (padding != NULL && depth >= 0)
-       padding(table, file, data, depth, entry_nr);
-    }
-    else {
-      ASSERT(entry != NULL && (entry->opcode_nr == entry_nr
-                              || table->opcode->is_boolean));
-      if (entry->opcode != NULL && depth != 0) {
-       insn_table_traverse_tree(entry, file, data, depth+1,
-                                start, leaf, end, padding);
-      }
-      else if (depth >= 0) {
-       if (leaf != NULL)
-         leaf(entry, file, data, entry->insns, depth);
-      }
-      entry = entry->sibling;
+  else
+    {
+      /* Find the corresponding master model record for each name so
+         that they can be linked in. */
+      int index;
+      char *name = "";
+      while (1)
+       {
+         name = filter_next (new_insn_model->names, name);
+         if (name == NULL)
+           break;
+         index = filter_is_member (model->processors, name) - 1;
+         if (index < 0)
+           {
+             error (new_insn_model->line,
+                    "machine model `%s' undefined\n", name);
+           }
+         /* store it in the corresponding model array entry */
+         if (insn->model[index] != NULL && insn->model[index]->names != NULL)
+           {
+             warning (new_insn_model->line,
+                      "machine model `%s' previously defined\n", name);
+             error (insn->model[index]->line, "earlier definition\n");
+           }
+         insn->model[index] = new_insn_model;
+         /* also add the name to the instructions processor set as an
+            alternative lookup mechanism */
+         filter_parse (&insn->processors, name);
+       }
     }
-  }
-  if (end != NULL && depth >= 0)
-    end(table, file, data, depth);
+  /* link it in */
+  last_insn_model = &insn->models;
+  while ((*last_insn_model) != NULL)
+    last_insn_model = &(*last_insn_model)->next;
+  *last_insn_model = new_insn_model;
 }
 
 
-extern void
-insn_table_traverse_function(insn_table *table,
-                            lf *file,
-                            void *data,
-                            function_handler *leaf)
+static void
+parse_insn_mnemonic_record (table *file,
+                           table_entry *record, insn_entry * insn)
 {
-  insn *function;
-  for (function = table->functions;
-       function != NULL;
-       function = function->next) {
-    leaf(table, file, data, function->file_entry);
-  }
+  insn_mnemonic_entry **last_insn_mnemonic;
+  insn_mnemonic_entry *new_insn_mnemonic = ZALLOC (insn_mnemonic_entry);
+  /* parse it */
+  new_insn_mnemonic->line = record->line;
+  ASSERT (record->nr_fields > insn_mnemonic_format_field);
+  new_insn_mnemonic->format = record->field[insn_mnemonic_format_field];
+  ASSERT (new_insn_mnemonic->format[0] == '"');
+  if (new_insn_mnemonic->format[strlen (new_insn_mnemonic->format) - 1] !=
+      '"')
+    error (new_insn_mnemonic->line,
+          "Missing closing double quote in mnemonic field\n");
+  if (record->nr_fields > insn_mnemonic_condition_field)
+    new_insn_mnemonic->condition =
+      record->field[insn_mnemonic_condition_field];
+  new_insn_mnemonic->insn = insn;
+  /* insert it */
+  last_insn_mnemonic = &insn->mnemonics;
+  while ((*last_insn_mnemonic) != NULL)
+    last_insn_mnemonic = &(*last_insn_mnemonic)->next;
+  insn->nr_mnemonics++;
+  *last_insn_mnemonic = new_insn_mnemonic;
 }
 
-extern void
-insn_table_traverse_insn(insn_table *table,
-                        lf *file,
-                        void *data,
-                        insn_handler *handler)
+
+static table_entry *
+parse_macro_record (table *file, table_entry *record)
 {
-  insn *instruction;
-  for (instruction = table->insns;
-       instruction != NULL;
-       instruction = instruction->next) {
-    handler(table, file, data, instruction, 0);
-  }
+#if 1
+  error (record->line, "Macros are not implemented");
+#else
+  /* parse the define record */
+  if (record->nr_fields < nr_define_fields)
+    error (record->line, "Incorrect nr fields for define record\n");
+  /* process it */
+  if (!is_filtered_out (options.flags_filter,
+                       record->field[record_filter_flags_field])
+      && !is_filtered_out (options.model_filter,
+                          record->field[record_filter_models_field]))
+    {
+      table_define (file,
+                   record->line,
+                   record->field[macro_name_field],
+                   record->field[macro_args_field],
+                   record->field[macro_expr_field]);
+    }
+  record = table_read (file);
+#endif
+  return record;
 }
 
 
-/****************************************************************/
-
-typedef enum {
-  field_constant_int = 1,
-  field_constant_slash = 2,
-  field_constant_string = 3
-} constant_field_types;
+insn_table *
+load_insn_table (char *file_name, cache_entry *cache)
+{
+  table *file = table_open (file_name);
+  table_entry *record = table_read (file);
+
+  insn_table *isa = ZALLOC (insn_table);
+  model_table *model = ZALLOC (model_table);
+
+  isa->model = model;
+  isa->caches = cache;
+
+  while (record != NULL)
+    {
+
+      switch (record_type (record))
+       {
+
+       case include_record:
+         {
+           record = parse_include_record (file, record);
+           break;
+         }
+
+       case option_record:
+         {
+           if (isa->insns != NULL)
+             error (record->line, "Option after first instruction\n");
+           record = parse_option_record (file, record);
+           break;
+         }
+
+       case string_function_record:
+         {
+           function_entry *function = NULL;
+           record = parse_function_record (file, record,
+                                           &isa->functions,
+                                           &function, 0 /*is-internal */ ,
+                                           model);
+           /* convert a string function record into an internal function */
+           if (function != NULL)
+             {
+               char *name = NZALLOC (char,
+                                     (strlen ("str_")
+                                      + strlen (function->name) + 1));
+               strcat (name, "str_");
+               strcat (name, function->name);
+               function->name = name;
+               function->type = "const char *";
+             }
+           break;
+         }
+
+       case function_record:   /* function record */
+         {
+           record = parse_function_record (file, record,
+                                           &isa->functions,
+                                           NULL, 0 /*is-internal */ ,
+                                           model);
+           break;
+         }
+
+       case internal_record:
+         {
+           /* only insert it into the function list if it is unknown */
+           function_entry *function = NULL;
+           record = parse_function_record (file, record,
+                                           &isa->functions,
+                                           &function, 1 /*is-internal */ ,
+                                           model);
+           /* check what was inserted to see if a pseudo-instruction
+              entry also needs to be created */
+           if (function != NULL)
+             {
+               insn_entry **insn = NULL;
+               if (strcmp (function->name, "illegal") == 0)
+                 {
+                   /* illegal function save it away */
+                   if (isa->illegal_insn != NULL)
+                     {
+                       warning (function->line,
+                                "Multiple illegal instruction definitions\n");
+                       error (isa->illegal_insn->line,
+                              "Location of first illegal instruction\n");
+                     }
+                   else
+                     insn = &isa->illegal_insn;
+                 }
+               if (insn != NULL)
+                 {
+                   *insn = ZALLOC (insn_entry);
+                   (*insn)->line = function->line;
+                   (*insn)->name = function->name;
+                   (*insn)->code = function->code;
+                 }
+             }
+           break;
+         }
+
+       case scratch_record:    /* cache macro records */
+       case cache_record:
+       case compute_record:
+         {
+           cache_entry *new_cache;
+           /* parse the cache record */
+           if (record->nr_fields < nr_cache_fields)
+             error (record->line,
+                    "Incorrect nr of fields for scratch/cache/compute record\n");
+           /* create it */
+           new_cache = ZALLOC (cache_entry);
+           new_cache->line = record->line;
+           filter_parse (&new_cache->flags,
+                         record->field[record_filter_flags_field]);
+           filter_parse (&new_cache->models,
+                         record->field[record_filter_models_field]);
+           new_cache->type = record->field[cache_typedef_field];
+           new_cache->name = record->field[cache_name_field];
+           filter_parse (&new_cache->original_fields,
+                         record->field[cache_original_fields_field]);
+           new_cache->expression = record->field[cache_expression_field];
+           /* insert it but only if not filtered out */
+           if (!filter_is_subset (options.flags_filter, new_cache->flags))
+             {
+               notify (new_cache->line,
+                       "Discarding cache entry %s - filter flags\n",
+                       new_cache->name);
+             }
+           else if (is_filtered_out (options.model_filter,
+                                     record->
+                                     field[record_filter_models_field]))
+             {
+               notify (new_cache->line,
+                       "Discarding cache entry %s - filter models\n",
+                       new_cache->name);
+             }
+           else
+             {
+               cache_entry **last;
+               last = &isa->caches;
+               while (*last != NULL)
+                 last = &(*last)->next;
+               *last = new_cache;
+             }
+           /* advance things */
+           record = table_read (file);
+           break;
+         }
+
+         /* model records */
+       case model_processor_record:
+         {
+           model_entry *new_model;
+           /* parse the model */
+           if (record->nr_fields < nr_model_processor_fields)
+             error (record->line,
+                    "Incorrect nr of fields for model record\n");
+           if (isa->insns != NULL)
+             error (record->line, "Model appears after first instruction\n");
+           new_model = ZALLOC (model_entry);
+           filter_parse (&new_model->flags,
+                         record->field[record_filter_flags_field]);
+           new_model->line = record->line;
+           new_model->name = record->field[model_name_field];
+           new_model->full_name = record->field[model_full_name_field];
+           new_model->unit_data = record->field[model_unit_data_field];
+           /* only insert it if not filtered out */
+           if (!filter_is_subset (options.flags_filter, new_model->flags))
+             {
+               notify (new_model->line,
+                       "Discarding processor model %s - filter flags\n",
+                       new_model->name);
+             }
+           else if (is_filtered_out (options.model_filter,
+                                     record->
+                                     field[record_filter_models_field]))
+             {
+               notify (new_model->line,
+                       "Discarding processor model %s - filter models\n",
+                       new_model->name);
+             }
+           else if (filter_is_member (model->processors, new_model->name))
+             {
+               error (new_model->line, "Duplicate processor model %s\n",
+                      new_model->name);
+             }
+           else
+             {
+               model_entry **last;
+               last = &model->models;
+               while (*last != NULL)
+                 last = &(*last)->next;
+               *last = new_model;
+               /* count it */
+               model->nr_models++;
+               filter_parse (&model->processors, new_model->name);
+             }
+           /* advance things */
+           record = table_read (file);
+         }
+         break;
+
+       case model_macro_record:
+         record = parse_model_data_record (isa, file, record,
+                                           nr_model_macro_fields,
+                                           &model->macros);
+         break;
+
+       case model_data_record:
+         record = parse_model_data_record (isa, file, record,
+                                           nr_model_data_fields,
+                                           &model->data);
+         break;
+
+       case model_static_record:
+         record = parse_function_record (file, record,
+                                         &model->statics,
+                                         NULL, 0 /*is internal */ ,
+                                         model);
+         break;
+
+       case model_internal_record:
+         record = parse_function_record (file, record,
+                                         &model->internals,
+                                         NULL, 1 /*is internal */ ,
+                                         model);
+         break;
+
+       case model_function_record:
+         record = parse_function_record (file, record,
+                                         &model->functions,
+                                         NULL, 0 /*is internal */ ,
+                                         model);
+         break;
+
+       case insn_record:       /* instruction records */
+         {
+           insn_entry *new_insn;
+           char *format;
+           /* parse the instruction */
+           if (record->nr_fields < nr_insn_fields)
+             error (record->line,
+                    "Incorrect nr of fields for insn record\n");
+           new_insn = ZALLOC (insn_entry);
+           new_insn->line = record->line;
+           filter_parse (&new_insn->flags,
+                         record->field[record_filter_flags_field]);
+           /* save the format field.  Can't parse it until after the
+              filter-out checks.  Could be filtered out because the
+              format is invalid */
+           format = record->field[insn_word_field];
+           new_insn->format_name = record->field[insn_format_name_field];
+           if (options.format_name_filter != NULL
+               && !filter_is_member (options.format_name_filter,
+                                     new_insn->format_name))
+             error (new_insn->line,
+                    "Unreconized instruction format name `%s'\n",
+                    new_insn->format_name);
+           filter_parse (&new_insn->options,
+                         record->field[insn_options_field]);
+           new_insn->name = record->field[insn_name_field];
+           record = table_read (file);
+           /* Parse any model/assember records */
+           new_insn->nr_models = model->nr_models;
+           new_insn->model =
+             NZALLOC (insn_model_entry *, model->nr_models + 1);
+           while (record != NULL)
+             {
+               if (record_prefix_is (record, '*', nr_insn_model_fields))
+                 parse_insn_model_record (file, record, new_insn, model);
+               else
+                 if (record_prefix_is (record, '"', nr_insn_mnemonic_fields))
+                 parse_insn_mnemonic_record (file, record, new_insn);
+               else
+                 break;
+               /* advance */
+               record = table_read (file);
+             }
+           /* Parse the code record */
+           if (record != NULL && record->type == table_code_entry)
+             {
+               new_insn->code = record;
+               record = table_read (file);
+             }
+           else if (options.warn.unimplemented)
+             notify (new_insn->line, "unimplemented\n");
+           /* insert it */
+           if (!filter_is_subset (options.flags_filter, new_insn->flags))
+             {
+               if (options.warn.discard)
+                 notify (new_insn->line,
+                         "Discarding instruction %s (flags-filter)\n",
+                         new_insn->name);
+             }
+           else if (new_insn->processors != NULL
+                    && options.model_filter != NULL
+                    && !filter_is_common (options.model_filter,
+                                          new_insn->processors))
+             {
+               /* only discard an instruction based in the processor
+                  model when both the instruction and the options are
+                  nonempty */
+               if (options.warn.discard)
+                 notify (new_insn->line,
+                         "Discarding instruction %s (processor-model)\n",
+                         new_insn->name);
+             }
+           else
+             {
+               insn_entry **last;
+               /* finish the parsing */
+               parse_insn_words (new_insn, format);
+               /* append it */
+               last = &isa->insns;
+               while (*last)
+                 last = &(*last)->next;
+               *last = new_insn;
+               /* update global isa counters */
+               isa->nr_insns++;
+               if (isa->max_nr_words < new_insn->nr_words)
+                 isa->max_nr_words = new_insn->nr_words;
+               filter_add (&isa->flags, new_insn->flags);
+               filter_add (&isa->options, new_insn->options);
+             }
+           break;
+         }
+
+       case define_record:
+         record = parse_macro_record (file, record);
+         break;
+
+       case unknown_record:
+       case code_record:
+         error (record->line, "Unknown or unexpected entry\n");
 
 
-static int
-insn_field_is_constant(insn_field *field,
-                      decode_table *rule)
-{
-  /* field is an integer */
-  if (field->is_int)
-    return field_constant_int;
-  /* field is `/' and treating that as a constant */
-  if (field->is_slash && rule->force_slash)
-    return field_constant_slash;
-  /* field, though variable is on the list */
-  if (field->is_string && rule->force_expansion != NULL) {
-    char *forced_fields = rule->force_expansion;
-    while (*forced_fields != '\0') {
-      int field_len;
-      char *end = strchr(forced_fields, ',');
-      if (end == NULL)
-       field_len = strlen(forced_fields);
-      else
-       field_len = end-forced_fields;
-      if (strncmp(forced_fields, field->val_string, field_len) == 0
-         && field->val_string[field_len] == '\0')
-       return field_constant_string;
-      forced_fields += field_len;
-      if (*forced_fields == ',')
-       forced_fields++;
+       }
     }
-  }
-  return 0;
+  return isa;
 }
 
 
-static opcode_field *
-insn_table_find_opcode_field(insn *insns,
-                            decode_table *rule,
-                            int string_only)
-{
-  opcode_field *curr_opcode = ZALLOC(opcode_field);
-  insn *entry;
-  ASSERT(rule);
-
-  curr_opcode->first = insn_bit_size;
-  curr_opcode->last = -1;
-  for (entry = insns; entry != NULL; entry = entry->next) {
-    insn_fields *fields = entry->fields;
-    opcode_field new_opcode;
-
-    /* find a start point for the opcode field */
-    new_opcode.first = rule->first;
-    while (new_opcode.first <= rule->last
-          && (!string_only
-              || insn_field_is_constant(fields->bits[new_opcode.first],
-                                        rule) != field_constant_string)
-          && (string_only
-              || !insn_field_is_constant(fields->bits[new_opcode.first],
-                                         rule)))
-      new_opcode.first = fields->bits[new_opcode.first]->last + 1;
-    ASSERT(new_opcode.first > rule->last
-          || (string_only
-              && insn_field_is_constant(fields->bits[new_opcode.first],
-                                        rule) == field_constant_string)
-          || (!string_only
-              && insn_field_is_constant(fields->bits[new_opcode.first],
-                                        rule)));
-  
-    /* find the end point for the opcode field */
-    new_opcode.last = rule->last;
-    while (new_opcode.last >= rule->first
-          && (!string_only
-              || insn_field_is_constant(fields->bits[new_opcode.last],
-                                        rule) != field_constant_string)
-          && (string_only
-              || !insn_field_is_constant(fields->bits[new_opcode.last],
-                                         rule)))
-      new_opcode.last = fields->bits[new_opcode.last]->first - 1;
-    ASSERT(new_opcode.last < rule->first
-          || (string_only
-              && insn_field_is_constant(fields->bits[new_opcode.last],
-                                        rule) == field_constant_string)
-          || (!string_only
-              && insn_field_is_constant(fields->bits[new_opcode.last],
-                                        rule)));
-
-    /* now see if our current opcode needs expanding */
-    if (new_opcode.first <= rule->last
-       && curr_opcode->first > new_opcode.first)
-      curr_opcode->first = new_opcode.first;
-    if (new_opcode.last >= rule->first
-       && curr_opcode->last < new_opcode.last)
-      curr_opcode->last = new_opcode.last;
-    
-  }
-
-  /* was any thing interesting found? */
-  if (curr_opcode->first > rule->last) {
-    ASSERT(curr_opcode->last < rule->first);
-    return NULL;
-  }
-  ASSERT(curr_opcode->last >= rule->first);
-  ASSERT(curr_opcode->first <= rule->last);
-
-  /* if something was found, check it includes the forced field range */
-  if (!string_only
-      && curr_opcode->first > rule->force_first) {
-    curr_opcode->first = rule->force_first;
-  }
-  if (!string_only
-      && curr_opcode->last < rule->force_last) {
-    curr_opcode->last = rule->force_last;
-  }
-  /* handle special case elminating any need to do shift after mask */
-  if (string_only
-      && rule->force_last == insn_bit_size-1) {
-    curr_opcode->last = insn_bit_size-1;
-  }
+void
+print_insn_words (lf *file, insn_entry * insn)
+{
+  insn_word_entry *word = insn->words;
+  if (word != NULL)
+    {
+      while (1)
+       {
+         insn_field_entry *field = word->first;
+         while (1)
+           {
+             insn_field_cond *cond;
+
+             if (options.insn_specifying_widths)
+               lf_printf (file, "%d.", field->width);
+             else
+               lf_printf (file, "%d.",
+                          i2target (options.hi_bit_nr, field->first));
+             switch (field->type)
+               {
+               case insn_field_invalid:
+                 ASSERT (0);
+                 break;
+               case insn_field_int:
+                 lf_printf (file, "0x%lx", (long) field->val_int);
+                 break;
+               case insn_field_reserved:
+                 lf_printf (file, "/");
+                 break;
+               case insn_field_wild:
+                 lf_printf (file, "*");
+                 break;
+               case insn_field_string:
+                 lf_printf (file, "%s", field->val_string);
+
+                 if (field->conditions == NULL)
+                   break;
+
+                 if (field->conditions->test == insn_field_cond_eq)
+                   {
+                     if (field->conditions->type == insn_field_cond_value)
+                       lf_printf (file, "=%ld",
+                                  (long) field->conditions->value);
+                     else
+                       lf_printf (file, "=%s", field->conditions->string);
+
+                     /* There can be only one equality condition.  */
+                     ASSERT (field->conditions->next == NULL);
+                     break;
+                   }
+
+                 for (cond = field->conditions;
+                      cond != NULL;
+                      cond = cond->next)
+                   {
+                     ASSERT (cond->test == insn_field_cond_ne);
+
+                     if (cond->type == insn_field_cond_value)
+                       lf_printf (file, "!%ld", (long) cond->value);
+                     else
+                       lf_printf (file, "!%s", cond->string);
+                   }
+                 break;
+               }
+             if (field == word->last)
+               break;
+             field = field->next;
+             lf_printf (file, ",");
+           }
+         word = word->next;
+         if (word == NULL)
+           break;
+         lf_printf (file, "+");
+       }
+    }
+}
+\f
 
-  /* handle any special cases */
-  switch (rule->type) {
-  case normal_decode_rule:
-    /* let the above apply */
-    break;
-  case expand_forced_rule:
-    /* expand a limited nr of bits, ignoring the rest */
-    curr_opcode->first = rule->force_first;
-    curr_opcode->last = rule->force_last;
-    break;
-  case boolean_rule:
-    curr_opcode->is_boolean = 1;
-    curr_opcode->boolean_constant = rule->special_constant;
-    break;
-  default:
-    error("Something is going wrong\n");
-  }
 
-  return curr_opcode;
+void
+function_entry_traverse (lf *file,
+                        function_entry * functions,
+                        function_entry_handler * handler, void *data)
+{
+  function_entry *function;
+  for (function = functions; function != NULL; function = function->next)
+    {
+      handler (file, function, data);
+    }
 }
 
+void
+insn_table_traverse_insn (lf *file,
+                         insn_table *isa,
+                         insn_entry_handler * handler, void *data)
+{
+  insn_entry *insn;
+  for (insn = isa->insns; insn != NULL; insn = insn->next)
+    {
+      handler (file, isa, insn, data);
+    }
+}
+\f
 
 static void
-insn_table_insert_expanded(insn_table *table,
-                          insn *old_insn,
-                          int new_opcode_nr,
-                          insn_bits *new_bits)
-{
-  insn_table **ptr_to_cur_entry = &table->entries;
-  insn_table *cur_entry = *ptr_to_cur_entry;
-
-  /* find the new table for this entry */
-  while (cur_entry != NULL
-        && cur_entry->opcode_nr < new_opcode_nr) {
-    ptr_to_cur_entry = &cur_entry->sibling;
-    cur_entry = *ptr_to_cur_entry;
-  }
-
-  if (cur_entry == NULL || cur_entry->opcode_nr != new_opcode_nr) {
-    insn_table *new_entry = ZALLOC(insn_table);
-    new_entry->opcode_nr = new_opcode_nr;
-    new_entry->expanded_bits = new_bits;
-    new_entry->opcode_rule = table->opcode_rule->next;
-    new_entry->sibling = cur_entry;
-    new_entry->parent = table;
-    *ptr_to_cur_entry = new_entry;
-    cur_entry = new_entry;
-    table->nr_entries++;
-  }
-  /* ASSERT new_bits == cur_entry bits */
-  ASSERT(cur_entry != NULL && cur_entry->opcode_nr == new_opcode_nr);
-  insn_table_insert_insn(cur_entry,
-                        old_insn->file_entry,
-                        old_insn->fields);
+dump_function_entry (lf *file,
+                    char *prefix, function_entry * entry, char *suffix)
+{
+  lf_printf (file, "%s(function_entry *) 0x%lx", prefix, (long) entry);
+  if (entry != NULL)
+    {
+      dump_line_ref (file, "\n(line ", entry->line, ")");
+      dump_filter (file, "\n(flags ", entry->flags, ")");
+      lf_printf (file, "\n(type \"%s\")", entry->type);
+      lf_printf (file, "\n(name \"%s\")", entry->name);
+      lf_printf (file, "\n(param \"%s\")", entry->param);
+      dump_table_entry (file, "\n(code ", entry->code, ")");
+      lf_printf (file, "\n(is_internal %d)", entry->is_internal);
+      lf_printf (file, "\n(next 0x%lx)", (long) entry->next);
+    }
+  lf_printf (file, "%s", suffix);
 }
 
 static void
-insn_table_expand_opcode(insn_table *table,
-                        insn *instruction,
-                        int field_nr,
-                        int opcode_nr,
-                        insn_bits *bits)
+dump_function_entries (lf *file,
+                      char *prefix, function_entry * entry, char *suffix)
 {
+  lf_printf (file, "%s", prefix);
+  lf_indent (file, +1);
+  while (entry != NULL)
+    {
+      dump_function_entry (file, "\n(", entry, ")");
+      entry = entry->next;
+    }
+  lf_indent (file, -1);
+  lf_printf (file, "%s", suffix);
+}
 
-  if (field_nr > table->opcode->last) {
-    insn_table_insert_expanded(table, instruction, opcode_nr, bits);
-  }
-  else {
-    insn_field *field = instruction->fields->bits[field_nr];
-    if (field->is_int || field->is_slash) {
-      if (!(field->first >= table->opcode->first
-           && field->last <= table->opcode->last))
-       error("%s:%d: Instruction field %s.%s [%d..%d] overlaps sub-field [%d..%d] boundary",
-             instruction->file_entry->file_name,
-             instruction->file_entry->line_nr,
-             field->pos_string, field->val_string,
-             field->first, field->last,
-             table->opcode->first, table->opcode->last);
-      insn_table_expand_opcode(table, instruction, field->last+1,
-                              ((opcode_nr << field->width) + field->val_int),
-                              bits);
-    }
-    else {
-      int val;
-      int last_pos = ((field->last < table->opcode->last)
-                       ? field->last : table->opcode->last);
-      int first_pos = ((field->first > table->opcode->first)
-                        ? field->first : table->opcode->first);
-      int width = last_pos - first_pos + 1;
-      int last_val = (table->opcode->is_boolean
-                     ? 2 : (1 << width));
-      for (val = 0; val < last_val; val++) {
-       insn_bits *new_bits = ZALLOC(insn_bits);
-       new_bits->field = field;
-       new_bits->value = val;
-       new_bits->last = bits;
-       new_bits->opcode = table->opcode;
-       insn_table_expand_opcode(table, instruction, last_pos+1,
-                                ((opcode_nr << width) | val),
-                                new_bits);
-      }
+static char *
+cache_entry_type_to_str (cache_entry_type type)
+{
+  switch (type)
+    {
+    case scratch_value:
+      return "scratch";
+    case cache_value:
+      return "cache";
+    case compute_value:
+      return "compute";
     }
-  }
+  ERROR ("Bad switch");
+  return 0;
 }
 
 static void
-insn_table_insert_expanding(insn_table *table,
-                           insn *entry)
-{
-  insn_table_expand_opcode(table,
-                          entry,
-                          table->opcode->first,
-                          0,
-                          table->expanded_bits);
-}
-
-
-extern void
-insn_table_expand_insns(insn_table *table)
-{
-
-  ASSERT(table->nr_insn >= 1);
-
-  /* determine a valid opcode */
-  while (table->opcode_rule) {
-    /* specials only for single instructions */
-    if ((table->nr_insn > 1
-        && table->opcode_rule->special_mask == 0
-        && table->opcode_rule->type == normal_decode_rule)
-       || (table->nr_insn == 1
-           && table->opcode_rule->special_mask != 0
-           && ((table->insns->fields->value
-                & table->opcode_rule->special_mask)
-               == table->opcode_rule->special_value))
-       || (generate_expanded_instructions
-           && table->opcode_rule->special_mask == 0
-           && table->opcode_rule->type == normal_decode_rule))
-      table->opcode =
-       insn_table_find_opcode_field(table->insns,
-                                    table->opcode_rule,
-                                    table->nr_insn == 1/*string*/
-                                    );
-    if (table->opcode != NULL)
-      break;
-    table->opcode_rule = table->opcode_rule->next;
-  }
-
-  /* did we find anything */
-  if (table->opcode == NULL) {
-    return;
-  }
-  ASSERT(table->opcode != NULL);
-
-  /* back link what we found to its parent */
-  if (table->parent != NULL) {
-    ASSERT(table->parent->opcode != NULL);
-    table->opcode->parent = table->parent->opcode;
-  }
-
-  /* expand the raw instructions according to the opcode */
-  {
-    insn *entry;
-    for (entry = table->insns; entry != NULL; entry = entry->next) {
-      insn_table_insert_expanding(table, entry);
+dump_cache_entry (lf *file, char *prefix, cache_entry *entry, char *suffix)
+{
+  lf_printf (file, "%s(cache_entry *) 0x%lx", prefix, (long) entry);
+  if (entry != NULL)
+    {
+      dump_line_ref (file, "\n(line ", entry->line, ")");
+      dump_filter (file, "\n(flags ", entry->flags, ")");
+      lf_printf (file, "\n(entry_type \"%s\")",
+                cache_entry_type_to_str (entry->entry_type));
+      lf_printf (file, "\n(name \"%s\")", entry->name);
+      dump_filter (file, "\n(original_fields ", entry->original_fields, ")");
+      lf_printf (file, "\n(type \"%s\")", entry->type);
+      lf_printf (file, "\n(expression \"%s\")", entry->expression);
+      lf_printf (file, "\n(next 0x%lx)", (long) entry->next);
     }
-  }
+  lf_printf (file, "%s", suffix);
+}
 
-  /* and do the same for the sub entries */
-  {
-    insn_table *entry;
-    for (entry = table->entries; entry != NULL; entry =  entry->sibling) {
-      insn_table_expand_insns(entry);
+void
+dump_cache_entries (lf *file, char *prefix, cache_entry *entry, char *suffix)
+{
+  lf_printf (file, "%s", prefix);
+  lf_indent (file, +1);
+  while (entry != NULL)
+    {
+      dump_cache_entry (file, "\n(", entry, ")");
+      entry = entry->next;
     }
-  }
+  lf_indent (file, -1);
+  lf_printf (file, "%s", suffix);
 }
 
-
-
-
-#ifdef MAIN
-
 static void
-dump_insn_field(insn_field *field,
-               int indent)
+dump_model_data (lf *file, char *prefix, model_data *entry, char *suffix)
 {
-
-  printf("(insn_field*)0x%x\n", (unsigned)field);
-
-  dumpf(indent, "(first %d)\n", field->first);
-
-  dumpf(indent, "(last %d)\n", field->last);
-
-  dumpf(indent, "(width %d)\n", field->width);
-
-  if (field->is_int)
-    dumpf(indent, "(is_int %d)\n", field->val_int);
-
-  if (field->is_slash)
-    dumpf(indent, "(is_slash)\n");
-
-  if (field->is_string)
-    dumpf(indent, "(is_string `%s')\n", field->val_string);
-  
-  dumpf(indent, "(next 0x%x)\n", field->next);
-  
-  dumpf(indent, "(prev 0x%x)\n", field->prev);
-  
-
+  lf_printf (file, "%s(model_data *) 0x%lx", prefix, (long) entry);
+  if (entry != NULL)
+    {
+      lf_indent (file, +1);
+      dump_line_ref (file, "\n(line ", entry->line, ")");
+      dump_filter (file, "\n(flags ", entry->flags, ")");
+      dump_table_entry (file, "\n(entry ", entry->entry, ")");
+      dump_table_entry (file, "\n(code ", entry->code, ")");
+      lf_printf (file, "\n(next 0x%lx)", (long) entry->next);
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", prefix);
 }
 
 static void
-dump_insn_fields(insn_fields *fields,
-                int indent)
+dump_model_datas (lf *file, char *prefix, model_data *entry, char *suffix)
 {
-  int i;
-
-  printf("(insn_fields*)%p\n", fields);
-
-  dumpf(indent, "(first 0x%x)\n", fields->first);
-  dumpf(indent, "(last 0x%x)\n", fields->last);
-
-  dumpf(indent, "(value 0x%x)\n", fields->value);
-
-  for (i = 0; i < insn_bit_size; i++) {
-    dumpf(indent, "(bits[%d] ", i, fields->bits[i]);
-    dump_insn_field(fields->bits[i], indent+1);
-    dumpf(indent, " )\n");
-  }
-
+  lf_printf (file, "%s", prefix);
+  lf_indent (file, +1);
+  while (entry != NULL)
+    {
+      dump_model_data (file, "\n(", entry, ")");
+      entry = entry->next;
+    }
+  lf_indent (file, -1);
+  lf_printf (file, "%s", suffix);
 }
 
-
 static void
-dump_opcode_field(opcode_field *field, int indent, int levels)
-{
-  printf("(opcode_field*)%p\n", field);
-  if (levels && field != NULL) {
-    dumpf(indent, "(first %d)\n", field->first);
-    dumpf(indent, "(last %d)\n", field->last);
-    dumpf(indent, "(is_boolean %d)\n", field->is_boolean);
-    dumpf(indent, "(parent ");
-    dump_opcode_field(field->parent, indent, levels-1);
-  }
+dump_model_entry (lf *file, char *prefix, model_entry *entry, char *suffix)
+{
+  lf_printf (file, "%s(model_entry *) 0x%lx", prefix, (long) entry);
+  if (entry != NULL)
+    {
+      lf_indent (file, +1);
+      dump_line_ref (file, "\n(line ", entry->line, ")");
+      dump_filter (file, "\n(flags ", entry->flags, ")");
+      lf_printf (file, "\n(name \"%s\")", entry->name);
+      lf_printf (file, "\n(full_name \"%s\")", entry->full_name);
+      lf_printf (file, "\n(unit_data \"%s\")", entry->unit_data);
+      lf_printf (file, "\n(next 0x%lx)", (long) entry->next);
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", prefix);
 }
 
-
 static void
-dump_insn_bits(insn_bits *bits, int indent, int levels)
-{
-  printf("(insn_bits*)%p\n", bits);
-
-  if (levels && bits != NULL) {
-    dumpf(indent, "(value %d)\n", bits->value);
-    dumpf(indent, "(opcode ");
-    dump_opcode_field(bits->opcode, indent+1, 0);
-    dumpf(indent, " )\n");
-    dumpf(indent, "(field ");
-    dump_insn_field(bits->field, indent+1);
-    dumpf(indent, " )\n");
-    dumpf(indent, "(last ");
-    dump_insn_bits(bits->last, indent+1, levels-1);
-  }
+dump_model_entries (lf *file, char *prefix, model_entry *entry, char *suffix)
+{
+  lf_printf (file, "%s", prefix);
+  lf_indent (file, +1);
+  while (entry != NULL)
+    {
+      dump_model_entry (file, "\n(", entry, ")");
+      entry = entry->next;
+    }
+  lf_indent (file, -1);
+  lf_printf (file, "%s", suffix);
 }
 
 
-
 static void
-dump_insn(insn *entry, int indent, int levels)
+dump_model_table (lf *file, char *prefix, model_table *entry, char *suffix)
 {
-  printf("(insn*)%p\n", entry);
-
-  if (levels && entry != NULL) {
-
-    dumpf(indent, "(file_entry ");
-    dump_table_entry(entry->file_entry, indent+1);
-    dumpf(indent, " )\n");
-
-    dumpf(indent, "(fields ");
-    dump_insn_fields(entry->fields, indent+1);
-    dumpf(indent, " )\n");
+  lf_printf (file, "%s(model_table *) 0x%lx", prefix, (long) entry);
+  if (entry != NULL)
+    {
+      lf_indent (file, +1);
+      dump_filter (file, "\n(processors ", entry->processors, ")");
+      lf_printf (file, "\n(nr_models %d)", entry->nr_models);
+      dump_model_entries (file, "\n(models ", entry->models, ")");
+      dump_model_datas (file, "\n(macros ", entry->macros, ")");
+      dump_model_datas (file, "\n(data ", entry->data, ")");
+      dump_function_entries (file, "\n(statics ", entry->statics, ")");
+      dump_function_entries (file, "\n(internals ", entry->functions, ")");
+      dump_function_entries (file, "\n(functions ", entry->functions, ")");
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", suffix);
+}
 
-    dumpf(indent, "(next ");
-    dump_insn(entry->next, indent+1, levels-1);
-    dumpf(indent, " )\n");
 
-  }
+static char *
+insn_field_type_to_str (insn_field_type type)
+{
+  switch (type)
+    {
+    case insn_field_invalid:
+      ASSERT (0);
+      return "(invalid)";
+    case insn_field_int:
+      return "int";
+    case insn_field_reserved:
+      return "reserved";
+    case insn_field_wild:
+      return "wild";
+    case insn_field_string:
+      return "string";
+    }
+  ERROR ("bad switch");
+  return 0;
+}
 
+void
+dump_insn_field (lf *file,
+                char *prefix, insn_field_entry *field, char *suffix)
+{
+  char *sep = " ";
+  lf_printf (file, "%s(insn_field_entry *) 0x%lx", prefix, (long) field);
+  if (field != NULL)
+    {
+      lf_indent (file, +1);
+      lf_printf (file, "%s(first %d)", sep, field->first);
+      lf_printf (file, "%s(last %d)", sep, field->last);
+      lf_printf (file, "%s(width %d)", sep, field->width);
+      lf_printf (file, "%s(type %s)", sep,
+                insn_field_type_to_str (field->type));
+      switch (field->type)
+       {
+       case insn_field_invalid:
+         ASSERT (0);
+         break;
+       case insn_field_int:
+         lf_printf (file, "%s(val 0x%lx)", sep, (long) field->val_int);
+         break;
+       case insn_field_reserved:
+         /* nothing output */
+         break;
+       case insn_field_wild:
+         /* nothing output */
+         break;
+       case insn_field_string:
+         lf_printf (file, "%s(val \"%s\")", sep, field->val_string);
+         break;
+       }
+      lf_printf (file, "%s(next 0x%lx)", sep, (long) field->next);
+      lf_printf (file, "%s(prev 0x%lx)", sep, (long) field->prev);
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", suffix);
 }
 
+void
+dump_insn_word_entry (lf *file,
+                     char *prefix, insn_word_entry *word, char *suffix)
+{
+  lf_printf (file, "%s(insn_word_entry *) 0x%lx", prefix, (long) word);
+  if (word != NULL)
+    {
+      int i;
+      insn_field_entry *field;
+      lf_indent (file, +1);
+      lf_printf (file, "\n(first 0x%lx)", (long) word->first);
+      lf_printf (file, "\n(last 0x%lx)", (long) word->last);
+      lf_printf (file, "\n(bit");
+      for (i = 0; i < options.insn_bit_size; i++)
+       lf_printf (file, "\n ((value %d) (mask %d) (field 0x%lx))",
+                  word->bit[i]->value, word->bit[i]->mask,
+                  (long) word->bit[i]->field);
+      lf_printf (file, ")");
+      for (field = word->first; field != NULL; field = field->next)
+       dump_insn_field (file, "\n(", field, ")");
+      dump_filter (file, "\n(field_names ", word->field_names, ")");
+      lf_printf (file, "\n(next 0x%lx)", (long) word->next);
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", suffix);
+}
 
 static void
-dump_insn_table(insn_table *table,
-               int indent, int levels)
+dump_insn_word_entries (lf *file,
+                       char *prefix, insn_word_entry *word, char *suffix)
 {
+  lf_printf (file, "%s", prefix);
+  while (word != NULL)
+    {
+      dump_insn_word_entry (file, "\n(", word, ")");
+      word = word->next;
+    }
+  lf_printf (file, "%s", suffix);
+}
 
-  printf("(insn_table*)%p\n", table);
-
-  if (levels && table != NULL) {
-
-    dumpf(indent, "(opcode_nr %d)\n", table->opcode_nr);
+static void
+dump_insn_model_entry (lf *file,
+                      char *prefix, insn_model_entry *model, char *suffix)
+{
+  lf_printf (file, "%s(insn_model_entry *) 0x%lx", prefix, (long) model);
+  if (model != NULL)
+    {
+      lf_indent (file, +1);
+      dump_line_ref (file, "\n(line ", model->line, ")");
+      dump_filter (file, "\n(names ", model->names, ")");
+      lf_printf (file, "\n(full_name \"%s\")", model->full_name);
+      lf_printf (file, "\n(unit_data \"%s\")", model->unit_data);
+      lf_printf (file, "\n(insn (insn_entry *) 0x%lx)", (long) model->insn);
+      lf_printf (file, "\n(next (insn_model_entry *) 0x%lx)",
+                (long) model->next);
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", suffix);
+}
 
-    dumpf(indent, "(expanded_bits ");
-    dump_insn_bits(table->expanded_bits, indent+1, -1);
-    dumpf(indent, " )\n");
+static void
+dump_insn_model_entries (lf *file,
+                        char *prefix, insn_model_entry *model, char *suffix)
+{
+  lf_printf (file, "%s", prefix);
+  while (model != NULL)
+    {
+      dump_insn_model_entry (file, "\n", model, "");
+      model = model->next;
+    }
+  lf_printf (file, "%s", suffix);
+}
 
-    dumpf(indent, "(int nr_insn %d)\n", table->nr_insn);
 
-    dumpf(indent, "(insns ");
-    dump_insn(table->insns, indent+1, table->nr_insn);
-    dumpf(indent, " )\n");
+static void
+dump_insn_mnemonic_entry (lf *file,
+                         char *prefix,
+                         insn_mnemonic_entry *mnemonic, char *suffix)
+{
+  lf_printf (file, "%s(insn_mnemonic_entry *) 0x%lx", prefix,
+            (long) mnemonic);
+  if (mnemonic != NULL)
+    {
+      lf_indent (file, +1);
+      dump_line_ref (file, "\n(line ", mnemonic->line, ")");
+      lf_printf (file, "\n(format \"%s\")", mnemonic->format);
+      lf_printf (file, "\n(condition \"%s\")", mnemonic->condition);
+      lf_printf (file, "\n(insn (insn_entry *) 0x%lx)",
+                (long) mnemonic->insn);
+      lf_printf (file, "\n(next (insn_mnemonic_entry *) 0x%lx)",
+                (long) mnemonic->next);
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", suffix);
+}
 
-    dumpf(indent, "(opcode_rule ");
-    dump_decode_rule(table->opcode_rule, indent+1);
-    dumpf(indent, " )\n");
+static void
+dump_insn_mnemonic_entries (lf *file,
+                           char *prefix,
+                           insn_mnemonic_entry *mnemonic, char *suffix)
+{
+  lf_printf (file, "%s", prefix);
+  while (mnemonic != NULL)
+    {
+      dump_insn_mnemonic_entry (file, "\n", mnemonic, "");
+      mnemonic = mnemonic->next;
+    }
+  lf_printf (file, "%s", suffix);
+}
 
-    dumpf(indent, "(opcode ");
-    dump_opcode_field(table->opcode, indent+1, 1);
-    dumpf(indent, " )\n");
+void
+dump_insn_entry (lf *file, char *prefix, insn_entry * entry, char *suffix)
+{
+  lf_printf (file, "%s(insn_entry *) 0x%lx", prefix, (long) entry);
+  if (entry != NULL)
+    {
+      int i;
+      lf_indent (file, +1);
+      dump_line_ref (file, "\n(line ", entry->line, ")");
+      dump_filter (file, "\n(flags ", entry->flags, ")");
+      lf_printf (file, "\n(nr_words %d)", entry->nr_words);
+      dump_insn_word_entries (file, "\n(words ", entry->words, ")");
+      lf_printf (file, "\n(word");
+      for (i = 0; i < entry->nr_models; i++)
+       lf_printf (file, " 0x%lx", (long) entry->word[i]);
+      lf_printf (file, ")");
+      dump_filter (file, "\n(field_names ", entry->field_names, ")");
+      lf_printf (file, "\n(format_name \"%s\")", entry->format_name);
+      dump_filter (file, "\n(options ", entry->options, ")");
+      lf_printf (file, "\n(name \"%s\")", entry->name);
+      lf_printf (file, "\n(nr_models %d)", entry->nr_models);
+      dump_insn_model_entries (file, "\n(models ", entry->models, ")");
+      lf_printf (file, "\n(model");
+      for (i = 0; i < entry->nr_models; i++)
+       lf_printf (file, " 0x%lx", (long) entry->model[i]);
+      lf_printf (file, ")");
+      dump_filter (file, "\n(processors ", entry->processors, ")");
+      dump_insn_mnemonic_entries (file, "\n(mnemonics ", entry->mnemonics,
+                                 ")");
+      dump_table_entry (file, "\n(code ", entry->code, ")");
+      lf_printf (file, "\n(next 0x%lx)", (long) entry->next);
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", suffix);
+}
 
-    dumpf(indent, "(nr_entries %d)\n", table->entries);
-    dumpf(indent, "(entries ");
-    dump_insn_table(table->entries, indent+1, table->nr_entries);
-    dumpf(indent, " )\n");
+static void
+dump_insn_entries (lf *file, char *prefix, insn_entry * entry, char *suffix)
+{
+  lf_printf (file, "%s", prefix);
+  lf_indent (file, +1);
+  while (entry != NULL)
+    {
+      dump_insn_entry (file, "\n(", entry, ")");
+      entry = entry->next;
+    }
+  lf_indent (file, -1);
+  lf_printf (file, "%s", suffix);
+}
 
-    dumpf(indent, "(sibling ", table->sibling);
-    dump_insn_table(table->sibling, indent+1, levels-1);
-    dumpf(indent, " )\n");
 
-    dumpf(indent, "(parent ", table->parent);
-    dump_insn_table(table->parent, indent+1, 0);
-    dumpf(indent, " )\n");
 
-  }
+void
+dump_insn_table (lf *file, char *prefix, insn_table *isa, char *suffix)
+{
+  lf_printf (file, "%s(insn_table *) 0x%lx", prefix, (long) isa);
+  if (isa != NULL)
+    {
+      lf_indent (file, +1);
+      dump_cache_entries (file, "\n(caches ", isa->caches, ")");
+      lf_printf (file, "\n(nr_insns %d)", isa->nr_insns);
+      lf_printf (file, "\n(max_nr_words %d)", isa->max_nr_words);
+      dump_insn_entries (file, "\n(insns ", isa->insns, ")");
+      dump_function_entries (file, "\n(functions ", isa->functions, ")");
+      dump_insn_entry (file, "\n(illegal_insn ", isa->illegal_insn, ")");
+      dump_model_table (file, "\n(model ", isa->model, ")");
+      dump_filter (file, "\n(flags ", isa->flags, ")");
+      dump_filter (file, "\n(options ", isa->options, ")");
+      lf_indent (file, -1);
+    }
+  lf_printf (file, "%s", suffix);
 }
 
-int insn_bit_size = default_insn_bit_size;
-int hi_bit_nr;
-int generate_expanded_instructions;
-int insn_specifying_widths;
+#ifdef MAIN
+
+igen_options options;
 
 int
-main(int argc, char **argv)
+main (int argc, char **argv)
 {
-  filter *filters = NULL;
-  decode_table *decode_rules = NULL;
-  insn_table *instructions = NULL;
+  insn_table *isa;
+  lf *l;
+
+  INIT_OPTIONS (options);
 
-  if (argc != 7)
-    error("Usage: insn <filter-in> <hi-bit-nr> <insn-bit-size> <widths> <decode-table> <insn-table>\n");
+  if (argc == 3)
+    filter_parse (&options.flags_filter, argv[2]);
+  else if (argc != 2)
+    error (NULL, "Usage: insn <insn-table> [ <filter-in> ]\n");
 
-  filters = new_filter(argv[1], filters);
-  hi_bit_nr = a2i(argv[2]);
-  insn_bit_size = a2i(argv[3]);
-  insn_specifying_widths = a2i(argv[4]);
-  ASSERT(hi_bit_nr < insn_bit_size);
-  decode_rules = load_decode_table(argv[5], hi_bit_nr);
-  instructions = load_insn_table(argv[6], decode_rules, filters);
-  insn_table_expand_insns(instructions);
+  isa = load_insn_table (argv[1], NULL);
+  l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-ld-insn");
+  dump_insn_table (l, "(isa ", isa, ")\n");
 
-  dump_insn_table(instructions, 0, -1);
   return 0;
 }