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/* Chrysalide - Outil d'analyse de fichiers binaires
* d2c.c - compilation d'asbtractions d'instructions
*
* Copyright (C) 2018 Cyrille Bagard
*
* This file is part of Chrysalide.
*
* Chrysalide 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.
*
* Chrysalide 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 Chrysalide. If not, see <http://www.gnu.org/licenses/>.
*/
#include <assert.h>
#include <getopt.h>
#include <math.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "coder.h"
#include "decl.h"
/* Affiche des indications sur l'utilisation du programme. */
static void show_usage(const char *);
/* Commandes générales supportées */
typedef enum _AvailableD2cCommand
{
ADC_NONE, /* Aucune action renseignée */
ADC_COMPILE, /* Créations principales */
ADC_FINI /* Finition de fichier global */
} AvailableD2cCommand;
/******************************************************************************
* *
* Paramètres : argv0 = nombre du programme exécuté. *
* *
* Description : Affiche des indications sur l'utilisation du programme. *
* *
* Retour : - *
* *
* Remarques : - *
* *
******************************************************************************/
static void show_usage(const char *argv0)
{
printf("\n");
printf("Usage: %s [options] <input file>\n", argv0);
printf("\n");
printf("General options:\n");
printf("\n");
printf("\t-h | --help\t\t\tDisplay this messsage.\n");
printf("\t-x | --exec <cc|fini>\t\tRun as compiler mode or complete the generation.\n");
printf("\t-o | --outdir <string>\t\tSpecify the main output directory.\n");
printf("\t-t | --type <raw|format>\tSet the type of the input file.\n");
printf("\t-a | --arch <string>\t\tDefine the archicture to handle (CamelCase allowed).\n");
printf("\t-n | --name <string>\t\tSet the name of the archicture for source code (CamelCase allowed).\n");
printf("\t-G | --guard <string>\t\tSet the base of the header macros guards.\n");
printf("\t-e | --encoding <none|string>\tDefine one encoding prefix for files.\n");
printf("\n");
printf("\t--id-prefix <string>\t\tDefine a common prefix for all uniq identifiers.\n");
printf("\t--id-expected <number>\t\tProvide the expected number of instructions.\n");
printf("\n");
printf("Raw specific options:\n");
printf("\n");
printf("\t--filename-reuse <length>\t\tSet the length of filename to include in identifiers (default = 0).\n");
printf("\n");
printf("Format specific options:\n");
printf("\n");
printf("\t--op-prefix <string>\t\tDefine a prefix to format operand type constants.\n");
printf("\n");
}
/******************************************************************************
* *
* Paramètres : argc = nombre d'arguments dans la ligne de commande. *
* argv = arguments de la ligne de commande. *
* *
* Description : Point d'entrée du programme. *
* *
* Retour : EXIT_SUCCESS si le prgm s'est déroulé sans encombres. *
* *
* Remarques : - *
* *
******************************************************************************/
int main(int argc, char **argv)
{
int result; /* Bilan à retourner */
bool need_help; /* Affichage de l'aide ? */
AvailableD2cCommand execute; /* Exécution globale attendue */
output_info info; /* Regroupement d'infos utiles */
pre_processor *pp; /* Pré-processeur avec macros */
bool has_error; /* Erreur dans la ligne de cmd.*/
int index; /* Indice d'argument à traiter */
int ret; /* Bilan d'une lecture d'arg. */
char *sep; /* Caratère '=' en coupure */
unsigned long int expected; /* Nombre total de définitions */
rented_coder *coder; /* Codeur à briffer & employer */
bool status; /* Bilan d'une génération */
char *temp; /* Zone de travail temporaire */
char *base; /* Identification de fichier */
char *underscore; /* Dernier caractère '_' */
static struct option long_options[] = {
{ "help", no_argument, NULL, 'h' },
{ "exec", required_argument, NULL, 'x' },
{ "outdir", required_argument, NULL, 'o' },
{ "type", required_argument, NULL, 't' },
{ "arch", required_argument, NULL, 'a' },
{ "name", required_argument, NULL, 'n' },
{ "guard", required_argument, NULL, 'G' },
{ "encoding", required_argument, NULL, 'e' },
{ "id-prefix", required_argument, NULL, 0x100 },
{ "id-expected", required_argument, NULL, 0x101 },
{ "filename-reuse", required_argument, NULL, 0x200 },
{ "op-prefix", required_argument, NULL, 0x300 },
{ NULL, 0, NULL, 0 }
};
/* Récupération des commandes */
need_help = false;
execute = ADC_NONE;
memset(&info, 0, sizeof(info));
pp = create_pre_processor();
has_error = false;
while (!has_error)
{
ret = getopt_long(argc, argv, "hx:o:t:a:n:G:e:", long_options, &index);
if (ret == -1) break;
switch (ret)
{
case 'h':
need_help = true;
break;
case 'x':
if (strcmp(optarg, "cc") == 0)
execute = ADC_COMPILE;
else if (strcmp(optarg, "fini") == 0)
execute = ADC_FINI;
else
has_error = true;
break;
case 'o':
asprintf(&info.opcodes_dir, "%sopcodes%c", optarg, optarg[strlen(optarg) - 1]);
break;
case 't':
if (strcmp(optarg, "raw") == 0)
info.type = IOT_RAW;
else if (strcmp(optarg, "format") == 0)
info.type = IOT_FORMAT;
else
has_error = true;
break;
case 'a':
info.arch = optarg;
break;
case 'n':
info.arch_cn = optarg;
break;
case 'G':
info.guard = optarg;
break;
case 'e':
if (strcmp(optarg, "none") == 0)
register_empty_encoding(pp);
else
{
sep = strchr(optarg, '=');
has_error = (sep == NULL);
if (!has_error)
{
*sep = '\0';
register_encoding(pp, optarg, sep + 1);
}
}
break;
case 0x100:
info.id_prefix = optarg;
break;
case 0x101:
expected = strtoul(optarg, NULL, 10);
info.id_len = (int)ceil(log(expected) / log(16));;
break;
case 0x200:
info.filename_reuse = strtoul(optarg, NULL, 10);
break;
case 0x300:
info.fmt_prefix = optarg;
break;
default:
has_error = true;
break;
}
}
/* Vérifications supplémentaires */
if (execute == ADC_NONE)
has_error = true;
if (info.opcodes_dir == NULL || info.arch == NULL || info.arch_cn == NULL || info.guard == NULL)
has_error = true;
if (need_help || has_error || (optind + 1) != argc)
{
show_usage(argv[0]);
result = (need_help ? EXIT_SUCCESS : EXIT_FAILURE);
goto exit;
}
/* Execution attendue */
result = EXIT_FAILURE;
switch (execute)
{
case ADC_COMPILE:
coder = process_definition_file(argv[optind], pp);
if (coder == NULL) goto exit;
status = output_coder_body(coder, &info);
if (!status) goto clean_exit;
status = output_coder_identifier(coder, &info);
if (!status) goto clean_exit;
if (info.type == IOT_RAW)
{
status = output_coder_sub_identifier(coder, &info);
if (!status) goto clean_exit;
}
status = output_coder_keyword(coder, &info);
if (!status) goto clean_exit;
status = output_coder_hooks(coder, &info);
if (!status) goto clean_exit;
status = output_coder_description(coder, &info);
if (!status) goto clean_exit;
break;
case ADC_FINI:
coder = NULL;
temp = strdup(argv[optind]);
base = basename(temp);
underscore = rindex(base, '_');
if (underscore == NULL && strcmp(base, "opcodes.h") == 0)
status = fini_coder_opcodes_file(argv[optind], &info);
else if (underscore != NULL && strcmp(underscore, "_opcodes.h") == 0)
status = fini_coder_opcodes_file(argv[optind], &info);
else if (strcmp(base, "identifiers.h") == 0)
status = fini_coder_identifiers_file(argv[optind], &info);
else if (strcmp(base, "subidentifiers.h") == 0 && info.type == IOT_RAW)
status = fini_coder_sub_identifiers_file(argv[optind], &info);
else if (strcmp(base, "keywords.h") == 0)
status = fini_coder_keywords_file(argv[optind], &info);
else if (strcmp(base, "hooks.h") == 0)
status = fini_coder_hooks_file(argv[optind], &info);
else if (strcmp(base, "descriptions.h") == 0)
status = fini_coder_descriptions_file(argv[optind], &info);
else
status = false;
free(temp);
if (!status) goto exit;
break;
default:
assert(false);
break;
}
result = EXIT_SUCCESS;
clean_exit:
if (coder != NULL)
delete_coder(coder);
exit:
if (info.opcodes_dir != NULL)
free(info.opcodes_dir);
return result;
}
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