520 lines
14 KiB
C
520 lines
14 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 2 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, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#include <getopt.h>
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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 "config.h"
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#include "filter.h"
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#include "ld-decode.h"
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#include "ld-cache.h"
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#include "ld-insn.h"
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#include "igen.h"
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#include "gen-model.h"
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#include "gen-icache.h"
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#include "gen-itable.h"
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#include "gen-idecode.h"
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#include "gen-semantics.h"
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#include "gen-support.h"
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int hi_bit_nr;
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int insn_bit_size = max_insn_bit_size;
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igen_code code = generate_calls;
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int generate_expanded_instructions;
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int icache_size = 1024;
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int generate_smp;
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/****************************************************************/
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static int
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print_insn_bits(lf *file, insn_bits *bits)
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{
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int nr = 0;
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if (bits == NULL)
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return nr;
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nr += print_insn_bits(file, bits->last);
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nr += lf_putchr(file, '_');
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nr += lf_putstr(file, bits->field->val_string);
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if (bits->opcode->is_boolean && bits->value == 0)
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nr += lf_putint(file, bits->opcode->boolean_constant);
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else if (!bits->opcode->is_boolean) {
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if (bits->opcode->last < bits->field->last)
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nr += lf_putint(file, bits->value << (bits->field->last - bits->opcode->last));
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else
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nr += lf_putint(file, bits->value);
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}
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return nr;
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}
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extern int
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print_function_name(lf *file,
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const char *basename,
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insn_bits *expanded_bits,
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lf_function_name_prefixes prefix)
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{
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int nr = 0;
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/* the prefix */
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switch (prefix) {
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case function_name_prefix_semantics:
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nr += lf_putstr(file, "semantic_");
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break;
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case function_name_prefix_idecode:
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nr += lf_printf(file, "idecode_");
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break;
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case function_name_prefix_itable:
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nr += lf_putstr(file, "itable_");
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break;
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case function_name_prefix_icache:
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nr += lf_putstr(file, "icache_");
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break;
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default:
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break;
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}
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/* the function name */
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{
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const char *pos;
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for (pos = basename;
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*pos != '\0';
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pos++) {
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switch (*pos) {
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case '/':
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case '-':
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case '(':
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case ')':
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break;
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case ' ':
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nr += lf_putchr(file, '_');
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break;
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default:
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nr += lf_putchr(file, *pos);
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break;
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}
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}
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}
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/* the suffix */
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if (generate_expanded_instructions)
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nr += print_insn_bits(file, expanded_bits);
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return nr;
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}
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void
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print_my_defines(lf *file,
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insn_bits *expanded_bits,
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table_entry *file_entry)
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{
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/* #define MY_INDEX xxxxx */
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lf_indent_suppress(file);
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lf_printf(file, "#undef MY_INDEX\n");
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lf_indent_suppress(file);
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lf_printf(file, "#define MY_INDEX ");
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print_function_name(file,
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file_entry->fields[insn_name],
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NULL,
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function_name_prefix_itable);
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lf_printf(file, "\n");
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/* #define MY_PREFIX xxxxxx */
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lf_indent_suppress(file);
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lf_printf(file, "#undef MY_PREFIX\n");
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lf_indent_suppress(file);
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lf_printf(file, "#define MY_PREFIX ");
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print_function_name(file,
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file_entry->fields[insn_name],
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expanded_bits,
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function_name_prefix_none);
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lf_printf(file, "\n");
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}
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void
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print_itrace(lf *file,
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table_entry *file_entry,
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int idecode)
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{
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lf_print__external_reference(file, file_entry->line_nr, file_entry->file_name);
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lf_printf(file, "ITRACE(trace_%s, (\"%s %s\\n\"));\n",
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(idecode ? "idecode" : "semantics"),
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(idecode ? "idecode" : "semantics"),
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file_entry->fields[insn_name]);
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lf_print__internal_reference(file);
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}
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/****************************************************************/
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static void
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gen_semantics_h(insn_table *table,
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lf *file,
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igen_code generate)
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{
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lf_printf(file, "typedef %s idecode_semantic\n(%s);\n",
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SEMANTIC_FUNCTION_TYPE,
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SEMANTIC_FUNCTION_FORMAL);
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lf_printf(file, "\n");
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if ((code & generate_calls)) {
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lf_printf(file, "extern int option_mpc860c0;\n");
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lf_printf(file, "#define PAGE_SIZE 0x1000\n");
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lf_printf(file, "\n");
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lf_printf(file, "PSIM_EXTERN_SEMANTICS(void)\n");
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lf_printf(file, "semantic_init(device* root);\n");
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lf_printf(file, "\n");
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if (generate_expanded_instructions)
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insn_table_traverse_tree(table,
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file, NULL,
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1,
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NULL, /* start */
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print_semantic_declaration, /* leaf */
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NULL, /* end */
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NULL); /* padding */
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else
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insn_table_traverse_insn(table,
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file, NULL,
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print_semantic_declaration);
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}
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else {
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lf_print__this_file_is_empty(file);
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}
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}
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static void
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gen_semantics_c(insn_table *table,
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cache_table *cache_rules,
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lf *file,
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igen_code generate)
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{
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if ((code & generate_calls)) {
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lf_printf(file, "\n");
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lf_printf(file, "#include \"cpu.h\"\n");
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lf_printf(file, "#include \"idecode.h\"\n");
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lf_printf(file, "#include \"semantics.h\"\n");
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lf_printf(file, "#include \"support.h\"\n");
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lf_printf(file, "#include \"sim-inline.h\"\n");
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lf_printf(file, "#include \"sim-fpu.h\"\n");
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lf_printf(file, "\n");
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lf_printf(file, "int option_mpc860c0 = 0;\n");
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lf_printf(file, "\n");
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lf_printf(file, "PSIM_EXTERN_SEMANTICS(void)\n");
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lf_printf(file, "semantic_init(device* root)\n");
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lf_printf(file, "{\n");
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lf_printf(file, " option_mpc860c0 = 0;\n");
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lf_printf(file, " if (tree_find_property(root, \"/options/mpc860c0\"))\n");
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lf_printf(file, " option_mpc860c0 = tree_find_integer_property(root, \"/options/mpc860c0\");\n");
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lf_printf(file, " option_mpc860c0 *= 4; /* convert word count to byte count */\n");
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lf_printf(file, "}\n");
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lf_printf(file, "\n");
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if (generate_expanded_instructions)
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insn_table_traverse_tree(table,
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file, cache_rules,
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1,
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NULL, /* start */
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print_semantic_definition, /* leaf */
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NULL, /* end */
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NULL); /* padding */
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else
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insn_table_traverse_insn(table,
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file, cache_rules,
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print_semantic_definition);
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}
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else {
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lf_print__this_file_is_empty(file);
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}
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}
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/****************************************************************/
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static void
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gen_icache_h(insn_table *table,
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lf *file,
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igen_code generate)
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{
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lf_printf(file, "typedef %s idecode_icache\n(%s);\n",
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ICACHE_FUNCTION_TYPE,
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ICACHE_FUNCTION_FORMAL);
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lf_printf(file, "\n");
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if ((code & generate_calls)
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&& (code & generate_with_icache)) {
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insn_table_traverse_function(table,
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file, NULL,
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print_icache_internal_function_declaration);
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if (generate_expanded_instructions)
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insn_table_traverse_tree(table,
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file, NULL,
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1,
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NULL, /* start */
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print_icache_declaration, /* leaf */
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NULL, /* end */
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NULL); /* padding */
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else
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insn_table_traverse_insn(table,
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file, NULL,
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print_icache_declaration);
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}
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else {
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lf_print__this_file_is_empty(file);
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}
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}
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static void
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gen_icache_c(insn_table *table,
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cache_table *cache_rules,
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lf *file,
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igen_code generate)
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{
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/* output `internal' invalid/floating-point unavailable functions
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where needed */
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if ((code & generate_calls)
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&& (code & generate_with_icache)) {
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lf_printf(file, "\n");
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lf_printf(file, "#include \"cpu.h\"\n");
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lf_printf(file, "#include \"idecode.h\"\n");
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lf_printf(file, "#include \"semantics.h\"\n");
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lf_printf(file, "#include \"icache.h\"\n");
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lf_printf(file, "#include \"support.h\"\n");
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lf_printf(file, "#include \"sim-inline.h\"\n");
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lf_printf(file, "#include \"sim-fpu.h\"\n");
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lf_printf(file, "\n");
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insn_table_traverse_function(table,
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file, NULL,
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print_icache_internal_function_definition);
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lf_printf(file, "\n");
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if (generate_expanded_instructions)
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insn_table_traverse_tree(table,
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file, cache_rules,
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1,
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NULL, /* start */
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print_icache_definition, /* leaf */
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NULL, /* end */
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NULL); /* padding */
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else
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insn_table_traverse_insn(table,
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file, cache_rules,
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print_icache_definition);
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}
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else {
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lf_print__this_file_is_empty(file);
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}
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}
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/****************************************************************/
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int
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main(int argc,
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char **argv,
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char **envp)
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{
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cache_table *cache_rules = NULL;
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lf_file_references file_references = lf_include_references;
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decode_table *decode_rules = NULL;
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filter *filters = NULL;
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insn_table *instructions = NULL;
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char *real_file_name = NULL;
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int is_header = 0;
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int ch;
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if (argc == 1) {
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printf("Usage:\n");
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printf(" igen <config-opts> ... <input-opts>... <output-opts>...\n");
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printf("Config options:\n");
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printf(" -F <filter-out-flag> eg -F 64 to skip 64bit instructions\n");
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printf(" -E Expand (duplicate) semantic functions\n");
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printf(" -I <icache-size> Generate cracking cache version\n");
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printf(" -C Include semantics in cache functions\n");
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printf(" -S Include insn (instruction) in icache\n");
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printf(" -R Use defines to reference cache vars\n");
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printf(" -L Supress line numbering in output files\n");
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printf(" -B <bit-size> Set the number of bits in an instruction\n");
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printf(" -H <high-bit> Set the nr of the high (msb bit)\n");
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printf(" -N <nr-cpus> Specify the max number of cpus the simulation will support\n");
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printf(" -J Use jumps instead of function calls\n");
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printf(" -T <mechanism> Override the mechanism used to decode an instruction\n");
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printf(" using <mechanism> instead of what was specified in the\n");
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printf(" decode-rules input file\n");
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printf("\n");
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printf("Input options (ucase version also dumps loaded table):\n");
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printf(" -o <decode-rules>\n");
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printf(" -k <cache-rules>\n");
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printf(" -i <instruction-table>\n");
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printf("\n");
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printf("Output options:\n");
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printf(" -n <real-name> Specify the real name of for the next output file\n");
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printf(" -h Generate header file\n");
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printf(" -c <output-file> output icache\n");
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printf(" -d <output-file> output idecode\n");
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printf(" -m <output-file> output model\n");
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printf(" -s <output-file> output schematic\n");
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printf(" -t <output-file> output itable\n");
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printf(" -f <output-file> output support functions\n");
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}
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while ((ch = getopt(argc, argv,
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"F:EI:RSLJT:CB:H:N:o:k:i:n:hc:d:m:s:t:f:"))
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!= -1) {
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fprintf(stderr, "\t-%c %s\n", ch, (optarg ? optarg : ""));
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switch(ch) {
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case 'C':
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code |= generate_with_icache;
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code |= generate_with_semantic_icache;
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break;
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case 'S':
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code |= generate_with_icache;
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code |= generate_with_insn_in_icache;
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break;
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case 'L':
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file_references = lf_omit_references;
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break;
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case 'E':
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generate_expanded_instructions = 1;
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break;
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case 'I':
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icache_size = a2i(optarg);
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code |= generate_with_icache;
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break;
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case 'N':
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generate_smp = a2i(optarg);
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break;
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case 'R':
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code |= generate_with_direct_access;
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break;
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case 'B':
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insn_bit_size = a2i(optarg);
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ASSERT(insn_bit_size > 0 && insn_bit_size <= max_insn_bit_size
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&& (hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0));
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break;
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case 'H':
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hi_bit_nr = a2i(optarg);
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ASSERT(hi_bit_nr == insn_bit_size-1 || hi_bit_nr == 0);
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break;
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case 'F':
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filters = new_filter(optarg, filters);
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break;
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case 'J':
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code &= ~generate_calls;
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code |= generate_jumps;
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break;
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case 'T':
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force_decode_gen_type(optarg);
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break;
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case 'i':
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if (decode_rules == NULL || cache_rules == NULL) {
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fprintf(stderr, "Must specify decode and cache tables\n");
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exit (1);
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}
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instructions = load_insn_table(optarg, decode_rules, filters);
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fprintf(stderr, "\texpanding ...\n");
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insn_table_expand_insns(instructions);
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break;
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case 'o':
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decode_rules = load_decode_table(optarg, hi_bit_nr);
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break;
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case 'k':
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cache_rules = load_cache_table(optarg, hi_bit_nr);
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break;
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case 'n':
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real_file_name = strdup(optarg);
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break;
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case 'h':
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is_header = 1;
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break;
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case 's':
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case 'd':
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case 'm':
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case 't':
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case 'f':
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case 'c':
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{
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lf *file = lf_open(optarg, real_file_name, file_references,
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(is_header ? lf_is_h : lf_is_c),
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argv[0]);
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lf_print__file_start(file);
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ASSERT(instructions != NULL);
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switch (ch) {
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case 's':
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if(is_header)
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gen_semantics_h(instructions, file, code);
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else
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gen_semantics_c(instructions, cache_rules, file, code);
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break;
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case 'd':
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if (is_header)
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gen_idecode_h(file, instructions, cache_rules);
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else
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gen_idecode_c(file, instructions, cache_rules);
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break;
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case 'm':
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if (is_header)
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gen_model_h(instructions, file);
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else
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gen_model_c(instructions, file);
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break;
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case 't':
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if (is_header)
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gen_itable_h(instructions, file);
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else
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gen_itable_c(instructions, file);
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break;
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case 'f':
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if (is_header)
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gen_support_h(instructions, file);
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else
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gen_support_c(instructions, file);
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break;
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case 'c':
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if (is_header)
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gen_icache_h(instructions, file, code);
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else
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gen_icache_c(instructions, cache_rules, file, code);
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break;
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}
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lf_print__file_finish(file);
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lf_close(file);
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is_header = 0;
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}
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real_file_name = NULL;
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break;
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default:
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error("unknown option\n");
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}
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}
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return 0;
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}
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