xref: /src/external/gpl3/gdb/dist/sim/igen/ld-insn.c

/* The IGEN simulator generator for GDB, the GNU Debugger.

   Copyright 2002-2025 Free Software Foundation, Inc.

   Contributed by Andrew Cagney.

   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 "igen.h"
#include "ld-insn.h"

static insn_word_entry *
parse_insn_word (const line_ref *line, char *string, int word_nr)
{
  char *chp;
  insn_word_entry *word = ZALLOC (insn_word_entry);

  /* create a leading sentinal */
  word->first = ZALLOC (insn_field_entry);
  word->first->first = -1;
  word->first->last = -1;
  word->first->width = 0;

  /* and a trailing sentinal */
  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 */
  word->first->next = word->last;
  word->last->prev = word->first;

  /* now work through the formats */
  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++;
	  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;
	  }
	}

      /* 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");
	}

      /* 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 omitted, an integer field
	         is always binary */
	      uint64_t 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 */
	}
    }

  /* 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 */
  {
    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;
	      }
	  }
      }
  }

  return word;
}


static void
parse_insn_words (insn_entry * insn, char *formats)
{
  insn_word_entry **last_word = &insn->words;
  char *chp;

  /* 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++;
    }

  /* 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;
  }

  /* Go over all fields that have conditionals referring 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 referred to by conditonal */
				cond->field = refered_field;
				/* check referred 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 %i\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);
		  }
	      }
	  }
      }
  }

}

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 int
record_is_old (table_entry *entry)
{
  if (entry->nr_fields > record_type_field
      && strlen (entry->field[record_type_field]) == 0)
    return 1;
  return 0;
}

static insn_record_type
record_type (table_entry *entry)
{
  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;
}

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;
}

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;
}


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;
}


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;
}


static table_entry *
parse_function_record (table *file,
		       table_entry *record,
		       function_entry ** list,
		       function_entry ** list_entry,
		       int is_internal, model_table *model)
{
  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 (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];
    }
  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);
    }
  /* parse the function body */
  if (record->type == table_code_entry)
    {
      new_function->code = record;
      record = table_read (file);
    }
  /* 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 (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
    {
      while (*list != NULL)
	list = &(*list)->next;
      *list = new_function;
      if (list_entry != NULL)
	*list_entry = new_function;
    }
  /* 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);
    }
  else
    {
      /* Find the corresponding master model record for each name so
         that they can be linked in. */
      int index;
      const 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);
	}
    }
  /* 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;
}


static void
parse_insn_mnemonic_record (table *file,
			    table_entry *record, insn_entry * insn)
{
  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;
}


static table_entry *
parse_macro_record (table *file, table_entry *record)
{
#if 1
  error (record->line, "Macros are not implemented\n");
#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;
}


insn_table *
load_insn_table (const 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");


	}
    }
  return isa;
}


void
print_insn_words (lf *file, const 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, "+");
	}
    }
}



void
function_entry_traverse (lf *file,
			 const function_entry *functions,
			 function_entry_handler * handler, void *data)
{
  const function_entry *function;
  for (function = functions; function != NULL; function = function->next)
    {
      handler (file, function, data);
    }
}

void
insn_table_traverse_insn (lf *file,
			  const insn_table *isa,
			  insn_entry_handler * handler, void *data)
{
  const insn_entry *insn;
  for (insn = isa->insns; insn != NULL; insn = insn->next)
    {
      handler (file, isa, insn, data);
    }
}


static void
dump_function_entry (lf *file,
		     const char *prefix,
		     const function_entry *entry,
		     const char *suffix)
{
  lf_printf (file, "%s(function_entry *) %p", prefix, 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 %p)", entry->next);
    }
  lf_printf (file, "%s", suffix);
}

static void
dump_function_entries (lf *file,
		       const char *prefix,
		       const function_entry *entry,
		       const 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);
}

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
dump_cache_entry (lf *file,
		  const char *prefix,
		  const cache_entry *entry,
		  const char *suffix)
{
  lf_printf (file, "%s(cache_entry *) %p", prefix, 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 %p)", entry->next);
    }
  lf_printf (file, "%s", suffix);
}

void
dump_cache_entries (lf *file,
		    const char *prefix,
		    const cache_entry *entry,
		    const 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);
}

static void
dump_model_data (lf *file,
		 const char *prefix,
		 const model_data *entry,
		 const char *suffix)
{
  lf_printf (file, "%s(model_data *) %p", prefix, 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 %p)", entry->next);
      lf_indent (file, -1);
    }
  lf_printf (file, "%s", prefix);
}

static void
dump_model_datas (lf *file,
		  const char *prefix,
		  const model_data *entry,
		  const char *suffix)
{
  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_model_entry (lf *file,
		  const char *prefix,
		  const model_entry *entry,
		  const char *suffix)
{
  lf_printf (file, "%s(model_entry *) %p", prefix, 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 %p)", entry->next);
      lf_indent (file, -1);
    }
  lf_printf (file, "%s", prefix);
}

static void
dump_model_entries (lf *file,
		    const char *prefix,
		    const model_entry *entry,
		    const 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_model_table (lf *file,
		  const char *prefix,
		  const model_table *entry,
		  const char *suffix)
{
  lf_printf (file, "%s(model_table *) %p", prefix, 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);
}


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,
		 const char *prefix,
		 const insn_field_entry *field,
		 const char *suffix)
{
  char *sep = " ";
  lf_printf (file, "%s(insn_field_entry *) %p", prefix, 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 %p)", sep, field->next);
      lf_printf (file, "%s(prev %p)", sep, field->prev);
      lf_indent (file, -1);
    }
  lf_printf (file, "%s", suffix);
}

void
dump_insn_word_entry (lf *file,
		      const char *prefix,
		      const insn_word_entry *word,
		      const char *suffix)
{
  lf_printf (file, "%s(insn_word_entry *) %p", prefix, word);
  if (word != NULL)
    {
      int i;
      insn_field_entry *field;
      lf_indent (file, +1);
      lf_printf (file, "\n(first %p)", word->first);
      lf_printf (file, "\n(last %p)", 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 %p))",
		   word->bit[i]->value, word->bit[i]->mask,
		   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 %p)", word->next);
      lf_indent (file, -1);
    }
  lf_printf (file, "%s", suffix);
}

static void
dump_insn_word_entries (lf *file,
			const char *prefix,
			const insn_word_entry *word,
			const 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);
}

static void
dump_insn_model_entry (lf *file,
		       const char *prefix,
		       const insn_model_entry *model,
		       const char *suffix)
{
  lf_printf (file, "%s(insn_model_entry *) %p", prefix, 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 *) %p)", model->insn);
      lf_printf (file, "\n(next (insn_model_entry *) %p)", model->next);
      lf_indent (file, -1);
    }
  lf_printf (file, "%s", suffix);
}

static void
dump_insn_model_entries (lf *file,
			 const char *prefix,
			 const insn_model_entry *model,
			 const 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);
}


static void
dump_insn_mnemonic_entry (lf *file,
			  const char *prefix,
			  const insn_mnemonic_entry *mnemonic,
			  const char *suffix)
{
  lf_printf (file, "%s(insn_mnemonic_entry *) %p", prefix, 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 *) %p)", mnemonic->insn);
      lf_printf (file, "\n(next (insn_mnemonic_entry *) %p)", mnemonic->next);
      lf_indent (file, -1);
    }
  lf_printf (file, "%s", suffix);
}

static void
dump_insn_mnemonic_entries (lf *file,
			    const char *prefix,
			    const insn_mnemonic_entry *mnemonic,
			    const 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);
}

void
dump_insn_entry (lf *file,
		 const char *prefix,
		 const insn_entry *entry,
		 const char *suffix)
{
  lf_printf (file, "%s(insn_entry *) %p", prefix, 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, " %p", 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, " %p", 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 %p)", entry->next);
      lf_indent (file, -1);
    }
  lf_printf (file, "%s", suffix);
}

static void
dump_insn_entries (lf *file,
		   const char *prefix,
		   const insn_entry *entry,
		   const 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);
}


void
dump_insn_table (lf *file,
		 const char *prefix,
		 const insn_table *isa,
		 const char *suffix)
{
  lf_printf (file, "%s(insn_table *) %p", prefix, 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);
}

#ifdef MAIN

igen_options options;

int
main (int argc, char **argv)
{
  insn_table *isa;
  lf *l;

  INIT_OPTIONS ();

  if (argc == 3)
    filter_parse (&options.flags_filter, argv[2]);
  else if (argc != 2)
    error (NULL, "Usage: insn <insn-table> [ <filter-in> ]\n");

  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");

  return 0;
}

#endif