mirror of
https://github.com/darlinghq/darling-gdb.git
synced 2024-12-13 15:05:46 +00:00
405 lines
12 KiB
C
405 lines
12 KiB
C
/* This file is part of the program psim.
|
|
|
|
Copyright (C) 1994,1995,1996, 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 "filter.h"
|
|
|
|
#include "igen.h"
|
|
|
|
#include "ld-decode.h"
|
|
|
|
#ifndef NULL
|
|
#define NULL 0
|
|
#endif
|
|
|
|
|
|
static const name_map decode_type_map[] = {
|
|
{ "normal", normal_decode_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_reserved_map[] = {
|
|
{ "zero-reserved", 1 },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
static const name_map decode_duplicates_map[] = {
|
|
{ "duplicate", 1 },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
static const name_map decode_combine_map[] = {
|
|
{ "combine", 1 },
|
|
{ NULL, 0 },
|
|
};
|
|
|
|
static const name_map decode_search_map[] = {
|
|
{ "constants", decode_find_constants },
|
|
{ "mixed", decode_find_mixed },
|
|
{ "strings", decode_find_strings },
|
|
{ NULL, decode_find_mixed },
|
|
};
|
|
|
|
|
|
static void
|
|
set_bits (int bit[max_insn_bit_size],
|
|
unsigned64 value)
|
|
{
|
|
int bit_nr;
|
|
for (bit_nr = 0; bit_nr < max_insn_bit_size; bit_nr++)
|
|
{
|
|
if (bit_nr < options.insn_bit_size)
|
|
bit[bit_nr] = (value >> (options.insn_bit_size - bit_nr - 1)) & 1;
|
|
else
|
|
bit[bit_nr] = 0;
|
|
}
|
|
}
|
|
|
|
decode_table *
|
|
load_decode_table(char *file_name)
|
|
{
|
|
table *file = table_open (file_name);
|
|
table_entry *entry;
|
|
decode_table *table = NULL;
|
|
decode_table **curr_rule = &table;
|
|
while ((entry = table_read (file)) != NULL)
|
|
{
|
|
char *decode_options = entry->field[decode_options_field];
|
|
decode_table *new_rule = ZALLOC (decode_table);
|
|
if (entry->nr_fields < min_nr_decode_fields)
|
|
error (entry->line, "Missing decode table fields\n");
|
|
new_rule->line = entry->line;
|
|
|
|
/* the options field */
|
|
new_rule->type = name2i (decode_options, decode_type_map);
|
|
if (options.decode.overriding_gen != NULL)
|
|
new_rule->gen = name2i (options.decode.overriding_gen, decode_gen_map);
|
|
else
|
|
new_rule->gen = name2i (decode_options, decode_gen_map);
|
|
if (new_rule->gen == padded_switch_gen
|
|
&& options.decode.switch_as_goto)
|
|
new_rule->gen = goto_switch_gen;
|
|
if (options.decode.zero_reserved)
|
|
new_rule->with_zero_reserved = 1;
|
|
else
|
|
new_rule->with_zero_reserved = name2i (decode_options, decode_reserved_map);
|
|
if (options.decode.duplicate)
|
|
new_rule->with_duplicates = 1;
|
|
else
|
|
new_rule->with_duplicates = name2i (decode_options, decode_duplicates_map);
|
|
if (options.decode.combine)
|
|
new_rule->with_combine = 1;
|
|
else
|
|
new_rule->with_combine = name2i (decode_options, decode_combine_map);
|
|
if (new_rule->type == boolean_rule)
|
|
{
|
|
char *chp = decode_options;
|
|
while (*chp != '\0')
|
|
{
|
|
if (isdigit (*chp))
|
|
{
|
|
new_rule->constant = a2i (chp);
|
|
break;
|
|
}
|
|
chp = skip_to_separator (chp, ",");
|
|
chp = skip_spaces (chp);
|
|
}
|
|
}
|
|
|
|
/* First and last */
|
|
if (entry->nr_fields > decode_first_field
|
|
&& strlen (entry->field[decode_first_field]) > 0)
|
|
{
|
|
new_rule->first = target_a2i (options.hi_bit_nr,
|
|
entry->field[decode_first_field]);
|
|
if (new_rule->first < 0 || new_rule->first >= options.insn_bit_size)
|
|
error (new_rule->line, "First field out of range\n");
|
|
}
|
|
else
|
|
new_rule->first = 0;
|
|
if (entry->nr_fields > decode_last_field
|
|
&& strlen (entry->field[decode_last_field]) > 0)
|
|
{
|
|
new_rule->last = target_a2i (options.hi_bit_nr,
|
|
entry->field[decode_last_field]);
|
|
if (new_rule->last < 0 || new_rule->last >= options.insn_bit_size)
|
|
error (new_rule->line, "Last field out of range\n");
|
|
}
|
|
else
|
|
new_rule->last = options.insn_bit_size - 1;
|
|
if (new_rule->first > new_rule->last)
|
|
error (new_rule->line, "First must preceed last\n");
|
|
|
|
/* force first/last, with default values based on first/last */
|
|
if (entry->nr_fields > decode_force_first_field
|
|
&& strlen (entry->field[decode_force_first_field]) > 0)
|
|
{
|
|
new_rule->force_first = target_a2i (options.hi_bit_nr,
|
|
entry->field[decode_force_first_field]);
|
|
if (new_rule->force_first < new_rule->first
|
|
|| new_rule->force_first > new_rule->last + 1)
|
|
error (new_rule->line, "Force first out of range\n");
|
|
}
|
|
else
|
|
new_rule->force_first = new_rule->last + 1;
|
|
if (entry->nr_fields > decode_force_last_field
|
|
&& strlen (entry->field[decode_force_last_field]) > 0)
|
|
{
|
|
new_rule->force_last = target_a2i (options.hi_bit_nr,
|
|
entry->field[decode_force_last_field]);
|
|
if (new_rule->force_last > new_rule->last
|
|
|| new_rule->force_last < new_rule->first - 1)
|
|
error (new_rule->line, "Force-last out of range\n");
|
|
}
|
|
else
|
|
new_rule->force_last = new_rule->first - 1;
|
|
|
|
/* fields to be treated as constant */
|
|
if (entry->nr_fields > decode_constant_field_names_field)
|
|
filter_parse (&new_rule->constant_field_names,
|
|
entry->field[decode_constant_field_names_field]);
|
|
|
|
/* applicable word nr */
|
|
if (entry->nr_fields > decode_word_nr_field)
|
|
new_rule->word_nr = a2i (entry->field[decode_word_nr_field]);
|
|
|
|
/* required instruction format names */
|
|
if (entry->nr_fields > decode_format_names_field)
|
|
filter_parse (&new_rule->format_names,
|
|
entry->field[decode_format_names_field]);
|
|
|
|
/* required processor models */
|
|
if (entry->nr_fields > decode_model_names_field)
|
|
filter_parse (&new_rule->model_names,
|
|
entry->field[decode_model_names_field]);
|
|
|
|
/* required paths */
|
|
if (entry->nr_fields > decode_paths_field
|
|
&& strlen (entry->field[decode_paths_field]) > 0)
|
|
{
|
|
decode_path_list **last = &new_rule->paths;
|
|
char *chp = entry->field[decode_paths_field];
|
|
do
|
|
{
|
|
(*last) = ZALLOC (decode_path_list);
|
|
/* extra root/zero entry */
|
|
(*last)->path = ZALLOC (decode_path);
|
|
do
|
|
{
|
|
decode_path *entry = ZALLOC (decode_path);
|
|
entry->opcode_nr = a2i (chp);
|
|
entry->parent = (*last)->path;
|
|
(*last)->path = entry;
|
|
chp = skip_digits (chp);
|
|
chp = skip_spaces (chp);
|
|
}
|
|
while (*chp == '.');
|
|
last = &(*last)->next;
|
|
}
|
|
while (*chp == ',');
|
|
if (*chp != '\0')
|
|
error (entry->line, "Invalid path field\n");
|
|
}
|
|
|
|
/* collect up the list of optional special conditions applicable
|
|
to the rule */
|
|
{
|
|
int field_nr = nr_decode_fields;
|
|
while (entry->nr_fields > field_nr)
|
|
{
|
|
decode_cond *cond = ZALLOC (decode_cond);
|
|
decode_cond **last;
|
|
if (entry->nr_fields > field_nr + decode_cond_mask_field)
|
|
set_bits (cond->mask, a2i (entry->field[field_nr + decode_cond_mask_field]));
|
|
if (entry->nr_fields > field_nr + decode_cond_value_field)
|
|
{
|
|
if (entry->field[field_nr + decode_cond_value_field][0] == '!')
|
|
{
|
|
cond->is_equal = 0;
|
|
set_bits (cond->value, a2i (entry->field[field_nr + decode_cond_value_field] + 1));
|
|
}
|
|
else
|
|
{
|
|
cond->is_equal = 1;
|
|
set_bits (cond->value, a2i (entry->field[field_nr + decode_cond_value_field]));
|
|
}
|
|
}
|
|
if (entry->nr_fields > field_nr + decode_cond_word_nr_field)
|
|
cond->word_nr = a2i (entry->field[field_nr + decode_cond_word_nr_field]);
|
|
field_nr += nr_decode_cond_fields;
|
|
/* insert it */
|
|
last = &new_rule->conditions;
|
|
while (*last != NULL)
|
|
last = &(*last)->next;
|
|
*last = cond;
|
|
}
|
|
}
|
|
*curr_rule = new_rule;
|
|
curr_rule = &new_rule->next;
|
|
}
|
|
return table;
|
|
}
|
|
|
|
|
|
int
|
|
decode_table_max_word_nr (decode_table *entry)
|
|
{
|
|
int max_word_nr = 0;
|
|
while (entry != NULL)
|
|
{
|
|
decode_cond *cond;
|
|
if (entry->word_nr > max_word_nr)
|
|
max_word_nr = entry->word_nr;
|
|
for (cond = entry->conditions; cond != NULL; cond = cond->next)
|
|
{
|
|
if (cond->word_nr > max_word_nr)
|
|
max_word_nr = cond->word_nr;
|
|
}
|
|
entry = entry->next;
|
|
}
|
|
return max_word_nr;
|
|
}
|
|
|
|
|
|
|
|
static void
|
|
dump_decode_cond (lf *file,
|
|
char *prefix,
|
|
decode_cond *cond,
|
|
char *suffix)
|
|
{
|
|
lf_printf (file, "%s(decode_cond *) 0x%lx", prefix, (long) cond);
|
|
if (cond != NULL)
|
|
{
|
|
lf_indent (file, +1);
|
|
lf_printf (file, "\n(word_nr %d)", cond->word_nr);
|
|
lf_printf (file, "\n(mask 0x%lx)", (long) cond->mask);
|
|
lf_printf (file, "\n(value 0x%lx)", (long) cond->value);
|
|
lf_printf (file, "\n(is_equal 0x%lx)", (long) cond->is_equal);
|
|
lf_printf (file, "\n(next (decode_cond *) 0%lx)", (long) cond->next);
|
|
lf_indent (file, -1);
|
|
}
|
|
lf_printf (file, "%s", suffix);
|
|
}
|
|
|
|
|
|
static void
|
|
dump_decode_conds (lf *file,
|
|
char *prefix,
|
|
decode_cond *cond,
|
|
char *suffix)
|
|
{
|
|
lf_printf (file, "%s(decode_cond *) 0x%lx", prefix, (long) cond);
|
|
while (cond != NULL)
|
|
{
|
|
dump_decode_cond (file, "\n(", cond, ")");
|
|
cond = cond->next;
|
|
}
|
|
lf_printf (file, "%s", suffix);
|
|
}
|
|
|
|
|
|
void
|
|
dump_decode_rule (lf *file,
|
|
char *prefix,
|
|
decode_table *rule,
|
|
char *suffix)
|
|
{
|
|
lf_printf (file, "%s(decode_table *) 0x%lx", prefix, (long) rule);
|
|
if (rule != NULL)
|
|
{
|
|
lf_indent (file, +1);
|
|
dump_line_ref (file, "\n(line ", rule->line, ")");
|
|
lf_printf (file, "\n(type %s)", i2name(rule->type, decode_type_map));
|
|
lf_printf (file, "\n(gen %s)", i2name(rule->gen, decode_gen_map));
|
|
lf_printf (file, "\n(first %d)", rule->first);
|
|
lf_printf (file, "\n(last %d)", rule->last);
|
|
lf_printf (file, "\n(force_first %d)", rule->force_first);
|
|
lf_printf (file, "\n(force_last %d)", rule->force_last);
|
|
dump_filter (file, "\n(constant_field_names \"", rule->constant_field_names, "\")");
|
|
lf_printf (file, "\n(constant 0x%x)", rule->constant);
|
|
lf_printf (file, "\n(word_nr %d)", rule->word_nr);
|
|
lf_printf (file, "\n(with_zero_reserved %d)", rule->with_zero_reserved);
|
|
lf_printf (file, "\n(with_duplicates %d)", rule->with_duplicates);
|
|
lf_printf (file, "\n(with_combine %d)", rule->with_combine);
|
|
dump_filter (file, "\n(format_names \"", rule->format_names, "\")");
|
|
dump_filter (file, "\n(model_names \"", rule->model_names, "\")");
|
|
dump_decode_conds (file, "\n(conditions ", rule->conditions, ")");
|
|
lf_printf (file, "\n(next 0x%lx)", (long) rule->next);
|
|
lf_indent (file, -1);
|
|
}
|
|
lf_printf (file, "%s", suffix);
|
|
}
|
|
|
|
|
|
#ifdef MAIN
|
|
|
|
static void
|
|
dump_decode_rules (lf *file,
|
|
char *prefix,
|
|
decode_table *rule,
|
|
char *suffix)
|
|
{
|
|
lf_printf (file, "%s", prefix);
|
|
while (rule != NULL)
|
|
{
|
|
lf_indent (file, +1);
|
|
dump_decode_rule (file, "\n(", rule, ")");
|
|
lf_indent (file, -1);
|
|
rule = rule->next;
|
|
}
|
|
lf_printf (file, "%s", suffix);
|
|
}
|
|
|
|
igen_options options;
|
|
|
|
int
|
|
main(int argc, char **argv)
|
|
{
|
|
lf *l;
|
|
decode_table *rules;
|
|
|
|
INIT_OPTIONS (options);
|
|
|
|
if (argc != 3)
|
|
error (NULL, "Usage: decode <decode-file> <hi-bit-nr>\n");
|
|
|
|
options.hi_bit_nr = a2i (argv[2]);
|
|
rules = load_decode_table (argv[1]);
|
|
l = lf_open ("-", "stdout", lf_omit_references, lf_is_text, "tmp-ld-insn");
|
|
dump_decode_rules (l, "(rules ", rules, ")\n");
|
|
|
|
return 0;
|
|
}
|
|
#endif
|