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/*  This file is part of the program psim.

    Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>

    This program is free software; you can redistribute it and/or modify

    it under the terms of the GNU General Public License as published by

    the Free Software Foundation; either version 2 of the License, or

    (at your option) any later version.

    This program is distributed in the hope that it will be useful,

    but WITHOUT ANY WARRANTY; without even the implied warranty of

    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License

    along with this program; if not, write to the Free Software

    Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.

    */

/* load the opcode stat structure */

#include "misc.h"

#include "lf.h"

#include "table.h"

#include "ld-decode.h"

#ifndef NULL

#define NULL 0

#endif

enum {

  op_options,

  op_first,

  op_last,

  op_force_first,

  op_force_last,

  op_force_expansion,

  op_special_mask,

  op_special_value,

  op_special_constant,

  nr_decode_fields,

};

static const name_map decode_type_map[] = {

  { "normal", normal_decode_rule },

  { "expand-forced", expand_forced_rule },

  { "boolean", boolean_rule },

  { NULL, normal_decode_rule },

};

static const name_map decode_gen_map[] = {

  { "array", array_gen },

  { "switch", switch_gen },

  { "padded-switch", padded_switch_gen },

  { "goto-switch", goto_switch_gen },

  { NULL, -1 },

};

static const name_map decode_slash_map[] = {

  { "variable-slash", 0 },

  { "constant-slash", 1 },

  { NULL },

};

static decode_gen_type overriding_gen_type = invalid_gen;

void

force_decode_gen_type(const char *type)

{

  overriding_gen_type = name2i(type, decode_gen_map);

}

decode_table *

load_decode_table(char *file_name,

                  int hi_bit_nr)

{

  table *file = table_open(file_name, nr_decode_fields, 0);

  table_entry *entry;

  decode_table *table = NULL;

  decode_table **curr_rule = &table;

  while ((entry = table_entry_read(file)) != NULL) {

    decode_table *new_rule = ZALLOC(decode_table);

    new_rule->type = name2i(entry->fields[op_options], decode_type_map);

    new_rule->gen = (overriding_gen_type != invalid_gen

                     ? overriding_gen_type

                     : name2i(entry->fields[op_options], decode_gen_map));

    new_rule->force_slash = name2i(entry->fields[op_options], decode_slash_map);

    new_rule->first = target_a2i(hi_bit_nr, entry->fields[op_first]);

    new_rule->last = target_a2i(hi_bit_nr, entry->fields[op_last]);

    new_rule->force_first = (strlen(entry->fields[op_force_first])

                             ? target_a2i(hi_bit_nr, entry->fields[op_force_first])

                             : new_rule->last + 1);

    new_rule->force_last = (strlen(entry->fields[op_force_last])

                            ? target_a2i(hi_bit_nr, entry->fields[op_force_last])

                            : new_rule->first - 1);

    new_rule->force_expansion = entry->fields[op_force_expansion];

    new_rule->special_mask = a2i(entry->fields[op_special_mask]);

    new_rule->special_value = a2i(entry->fields[op_special_value]);

    new_rule->special_constant = a2i(entry->fields[op_special_constant]);

    *curr_rule = new_rule;

    curr_rule = &new_rule->next;

  }

  return table;

}

void

dump_decode_rule(decode_table *rule,

                 int indent)

{

  dumpf(indent, "((decode_table*)%p\n", rule);

  if (rule) {

    dumpf(indent, " (type %s)\n", i2name(rule->type, decode_type_map));

    dumpf(indent, " (gen %s)\n", i2name(rule->gen, decode_gen_map));

    dumpf(indent, " (force_slash %d)\n", rule->force_slash);

    dumpf(indent, " (first %d)\n", rule->first);

    dumpf(indent, " (last %d)\n", rule->last);

    dumpf(indent, " (force_first %d)\n", rule->force_first);

    dumpf(indent, " (force_last %d)\n", rule->force_last);

    dumpf(indent, " (force_expansion \"%s\")\n", rule->force_expansion);

    dumpf(indent, " (special_mask 0x%x)\n", rule->special_mask);

    dumpf(indent, " (special_value 0x%x)\n", rule->special_value);

    dumpf(indent, " (special_constant 0x%x)\n", rule->special_constant);

    dumpf(indent, " (next 0x%x)\n", rule->next);

  }

  dumpf(indent, " )\n");

}

#ifdef MAIN

static void

dump_decode_rules(decode_table *rule,

                  int indent)

{

  while (rule) {

    dump_decode_rule(rule, indent);

    rule = rule->next;

  }

}

int

main(int argc, char **argv)

{

  decode_table *rules;

  if (argc != 3)

    error("Usage: decode <decode-file> <hi-bit-nr>\n");

  rules = load_decode_table(argv[1], a2i(argv[2]));

  dump_decode_rules(rules, 0);

  return 0;

}

#endif