155 lines
4.4 KiB
C
155 lines
4.4 KiB
C
/* This file is part of the program psim.
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Copyright (C) 1994-1997, Andrew Cagney <cagney@highland.com.au>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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/* load the opcode stat structure */
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#include "misc.h"
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#include "lf.h"
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#include "table.h"
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#include "ld-decode.h"
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#ifndef NULL
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#define NULL 0
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#endif
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enum {
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op_options,
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op_first,
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op_last,
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op_force_first,
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op_force_last,
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op_force_expansion,
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op_special_mask,
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op_special_value,
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op_special_constant,
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nr_decode_fields,
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};
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static const name_map decode_type_map[] = {
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{ "normal", normal_decode_rule },
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{ "expand-forced", expand_forced_rule },
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{ "boolean", boolean_rule },
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{ NULL, normal_decode_rule },
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};
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static const name_map decode_gen_map[] = {
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{ "array", array_gen },
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{ "switch", switch_gen },
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{ "padded-switch", padded_switch_gen },
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{ "goto-switch", goto_switch_gen },
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{ NULL, -1 },
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};
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static const name_map decode_slash_map[] = {
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{ "variable-slash", 0 },
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{ "constant-slash", 1 },
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{ NULL },
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};
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static decode_gen_type overriding_gen_type = invalid_gen;
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void
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force_decode_gen_type(const char *type)
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{
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overriding_gen_type = name2i(type, decode_gen_map);
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}
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decode_table *
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load_decode_table(char *file_name,
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int hi_bit_nr)
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{
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table *file = table_open(file_name, nr_decode_fields, 0);
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table_entry *entry;
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decode_table *table = NULL;
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decode_table **curr_rule = &table;
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while ((entry = table_entry_read(file)) != NULL) {
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decode_table *new_rule = ZALLOC(decode_table);
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new_rule->type = name2i(entry->fields[op_options], decode_type_map);
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new_rule->gen = (overriding_gen_type != invalid_gen
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? overriding_gen_type
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: name2i(entry->fields[op_options], decode_gen_map));
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new_rule->force_slash = name2i(entry->fields[op_options], decode_slash_map);
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new_rule->first = target_a2i(hi_bit_nr, entry->fields[op_first]);
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new_rule->last = target_a2i(hi_bit_nr, entry->fields[op_last]);
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new_rule->force_first = (strlen(entry->fields[op_force_first])
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? target_a2i(hi_bit_nr, entry->fields[op_force_first])
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: new_rule->last + 1);
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new_rule->force_last = (strlen(entry->fields[op_force_last])
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? target_a2i(hi_bit_nr, entry->fields[op_force_last])
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: new_rule->first - 1);
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new_rule->force_expansion = entry->fields[op_force_expansion];
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new_rule->special_mask = a2i(entry->fields[op_special_mask]);
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new_rule->special_value = a2i(entry->fields[op_special_value]);
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new_rule->special_constant = a2i(entry->fields[op_special_constant]);
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*curr_rule = new_rule;
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curr_rule = &new_rule->next;
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}
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return table;
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}
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void
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dump_decode_rule(decode_table *rule,
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int indent)
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{
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dumpf(indent, "((decode_table*)%p\n", rule);
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if (rule) {
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dumpf(indent, " (type %s)\n", i2name(rule->type, decode_type_map));
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dumpf(indent, " (gen %s)\n", i2name(rule->gen, decode_gen_map));
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dumpf(indent, " (force_slash %d)\n", rule->force_slash);
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dumpf(indent, " (first %d)\n", rule->first);
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dumpf(indent, " (last %d)\n", rule->last);
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dumpf(indent, " (force_first %d)\n", rule->force_first);
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dumpf(indent, " (force_last %d)\n", rule->force_last);
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dumpf(indent, " (force_expansion \"%s\")\n", rule->force_expansion);
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dumpf(indent, " (special_mask 0x%x)\n", rule->special_mask);
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dumpf(indent, " (special_value 0x%x)\n", rule->special_value);
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dumpf(indent, " (special_constant 0x%x)\n", rule->special_constant);
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dumpf(indent, " (next 0x%x)\n", rule->next);
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}
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dumpf(indent, " )\n");
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}
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#ifdef MAIN
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static void
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dump_decode_rules(decode_table *rule,
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int indent)
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{
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while (rule) {
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dump_decode_rule(rule, indent);
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rule = rule->next;
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}
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}
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int
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main(int argc, char **argv)
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{
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decode_table *rules;
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if (argc != 3)
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error("Usage: decode <decode-file> <hi-bit-nr>\n");
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rules = load_decode_table(argv[1], a2i(argv[2]));
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dump_decode_rules(rules, 0);
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return 0;
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}
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#endif
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