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/* Chrysalide - Outil d'analyse de fichiers binaires
 * annotations.c - enregistrement des annotations liées au format MCLF
 *
 * Copyright (C) 2015-2017 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 Foobar.  If not, see <http://www.gnu.org/licenses/>.
 */


#include "annotations.h"


#include <malloc.h>


#include <i18n.h>
#include <arch/raw.h>
#include <common/extstr.h>


#include "mclf-int.h"



/* Place des annotations sur un descripteur de segment MCLF. */
static bool annotate_mclf_segment_descriptor(GMCLFFormat *, const char *, vmpa2t *);

/* Place des annotations sur le début commun du binaire MCLF. */
static bool annotate_mclf_intro(GMCLFFormat *, vmpa2t *pos);

/* Place des annotations sur l'en-tête v1 du binaire MCLF. */
static bool annotate_mclf_header_v1(GMCLFFormat *, vmpa2t *pos);

/* Place des annotations sur l'en-tête du segment de code. */
static bool annotate_mclf_text_segment_header(GMCLFFormat *format, vmpa2t *);



/******************************************************************************
*                                                                             *
*  Paramètres  : format = description de l'exécutable à compléter.            *
*                prefix = désignation du segment dans son ensemble.           *
*                pos    = tête de lecture à initialiser / faire évoluer. [OUT]*
*                                                                             *
*  Description : Place des annotations sur un descripteur de segment MCLF.    *
*                                                                             *
*  Retour      : Bilan de l'opération.                                        *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

static bool annotate_mclf_segment_descriptor(GMCLFFormat *format, const char *prefix, vmpa2t *pos)
{
    GBinContent *content;                   /* Contenu binaire à lire      */
    GArchInstruction *instr;                /* Instruction décodée         */
    char *text;                             /* Texte construit par étapes  */
    GDbComment *comment;                    /* Définition de commentaire   */
    GBinSymbol *symbol;                     /* Symbole à intégrer          */

    content = G_BIN_FORMAT(format)->content;

    /* start */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    text = strdup(prefix);
    text = stradd(text, _(": start address"));

    ADD_RAW_AS_SYM(format, symbol, instr, comment, text);

    free(text);

    /* len */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    text = strdup(prefix);
    text = stradd(text, _(": length"));

    ADD_RAW_AS_SYM(format, symbol, instr, comment, text);

    free(text);

    return true;

}



/******************************************************************************
*                                                                             *
*  Paramètres  : format = description de l'exécutable à compléter.            *
*                pos    = tête de lecture à initialiser / faire évoluer. [OUT]*
*                                                                             *
*  Description : Place des annotations sur le début commun du binaire MCLF.   *
*                                                                             *
*  Retour      : Bilan de l'opération.                                        *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

static bool annotate_mclf_intro(GMCLFFormat *format, vmpa2t *pos)
{
    GBinContent *content;                   /* Contenu binaire à lire      */
    GArchInstruction *instr;                /* Instruction décodée         */
    GArchOperand *operand;                  /* Opérande à venir modifier   */
    GDbComment *comment;                    /* Définition de commentaire   */
    GBinSymbol *symbol;                     /* Symbole à intégrer          */

    content = G_BIN_FORMAT(format)->content;

    init_vmpa(pos, 0, format->header.v1.text.start);

    /* magic */

    instr = g_raw_instruction_new_array(content, MDS_8_BITS, 4, pos, format->endian);

    SET_IMM_DISPLAY(instr, operand, 0, IOD_CHAR);
    SET_IMM_DISPLAY(instr, operand, 1, IOD_CHAR);
    SET_IMM_DISPLAY(instr, operand, 2, IOD_CHAR);
    SET_IMM_DISPLAY(instr, operand, 3, IOD_CHAR);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("MCLF magic number"));

    /* version */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Version"));

    return true;

}


/******************************************************************************
*                                                                             *
*  Paramètres  : format = description de l'exécutable à compléter.            *
*                pos    = tête de lecture à faire évoluer. [OUT]              *
*                                                                             *
*  Description : Place des annotations sur l'en-tête v1 du binaire MCLF.      *
*                                                                             *
*  Retour      : Bilan de l'opération.                                        *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

static bool annotate_mclf_header_v1(GMCLFFormat *format, vmpa2t *pos)
{
    GBinContent *content;                   /* Contenu binaire à lire      */
    GArchInstruction *instr;                /* Instruction décodée         */
    GDbComment *comment;                    /* Définition de commentaire   */
    GBinSymbol *symbol;                     /* Symbole à intégrer          */
    const char *text;                       /* Commentaire variable        */

    content = G_BIN_FORMAT(format)->content;

    /* flags */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Service flags"));

    /* mem_type */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    switch (format->header.v1.mem_type)
    {
        case MCLF_MEM_TYPE_INTERNAL_PREFERRED:
            text = _("Memory to use: internal if available, otherwise external memory");
            break;
        case MCLF_MEM_TYPE_INTERNAL:
            text = _("Internal memory must be used for executing the service");
            break;
        case MCLF_MEM_TYPE_EXTERNAL:
            text = _("External memory must be used for executing the service");
            break;
        default:
            text = _("Unknown memory usage");
            break;
    }

    ADD_RAW_AS_SYM(format, symbol, instr, comment, text);

    /* service_type */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    switch (format->header.v1.service_type)
    {
        case SERVICE_TYPE_ILLEGAL:
            text = _("Service type is invalid");
            break;

        case SERVICE_TYPE_DRIVER:
            text = _("Service is a driver");
            break;

        case SERVICE_TYPE_SP_TRUSTLET:
            text = _("Service is a Trustlet");
            break;

        case SERVICE_TYPE_SYSTEM_TRUSTLET:
            text = _("Service is a system Trustlet");
            break;
    }

    ADD_RAW_AS_SYM(format, symbol, instr, comment, text);

    /* num_instances */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Number of instances which can be run simultaneously"));

    /* uuid */

    instr = g_raw_instruction_new_array(content, MDS_8_BITS, 16, pos, format->endian);

    g_raw_instruction_mark_as_padding(G_RAW_INSTRUCTION(instr), true);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Loadable service unique identifier (UUID)"));

    /* driver_id */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    if (format->header.v1.service_type == SERVICE_TYPE_DRIVER)
        text = _("Driver ID");
    else
        text = _("Unused Driver ID");

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Number of threads"));

    /* num_threads */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Number of threads"));

    /* text.start */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Virtual text segment: start address"));

    /* text.len */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Virtual text segment: length"));

    /* data.start */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Virtual data segment: start address"));

    /* data.len */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Virtual data segment: length"));

    /* bss_len */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Length of the BSS segment in bytes"));

    /* entry */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Virtual start address of service code"));





    /* service_version */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Version of the interface the driver exports"));




    /* sip_id */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Silicon Provider ID"));

    /* sip_data */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 3, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Platform specific device identifier"));

    /* permitted_hw_cfg */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Configuration which is allowed to execute binary"));


    return true;

}









/******************************************************************************
*                                                                             *
*  Paramètres  : format = description de l'exécutable à compléter.            *
*                pos    = tête de lecture à initialiser / faire évoluer. [OUT]*
*                                                                             *
*  Description : Place des annotations sur l'en-tête du segment de code.      *
*                                                                             *
*  Retour      : Bilan de l'opération.                                        *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

static bool annotate_mclf_text_segment_header(GMCLFFormat *format, vmpa2t *pos)
{
    GBinContent *content;                   /* Contenu binaire à lire      */
    vmpa2t old;                             /* Position précédente         */
    phys_t diff;                            /* Décallage entre positions   */
    GArchInstruction *instr;                /* Instruction décodée         */
    GDbComment *comment;                    /* Définition de commentaire   */
    GBinSymbol *symbol;                     /* Symbole à intégrer          */

    content = G_BIN_FORMAT(format)->content;

    copy_vmpa(&old, pos);
    init_vmpa(pos, 0x80, format->header.v1.text.start + 0x80);

    diff = compute_vmpa_diff(&old, pos);

    instr = g_raw_instruction_new_array(content, MDS_8_BITS, diff, &old, format->endian);

    g_raw_instruction_mark_as_padding(G_RAW_INSTRUCTION(instr), true);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Padding"));

    /* version */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Version of the TextHeader structure"));

    /* text_header_len */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Size of this structure"));

    /* required_feat */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Features that Mobicore must understand when loading"));

    /* mc_lib_entry */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Address for McLib entry"));

    /* mc_lib_data */

    if (!annotate_mclf_segment_descriptor(format, _("Segment for McLib data"), pos))
        return false;

    //Segment for McLib data

    /* mc_lib_base */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("McLib base address"));

    /* tl_api_vers */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("TlApi version used when building trustlet"));

    /* dr_api_vers */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("DrApi version used when building trustlet"));

    /* ta_properties */

    instr = g_raw_instruction_new_array(content, MDS_32_BITS, 1, pos, format->endian);

    ADD_RAW_AS_SYM(format, symbol, instr, comment, _("Address of _TA_Properties in the TA"));

    return true;

}










/******************************************************************************
*                                                                             *
*  Paramètres  : format = description de l'exécutable à compléter.            *
*                                                                             *
*  Description : Place des annotations sur le binaire MCLF.                   *
*                                                                             *
*  Retour      : Bilan de l'opération.                                        *
*                                                                             *
*  Remarques   : -                                                            *
*                                                                             *
******************************************************************************/

bool annotate_mclf_binary(GMCLFFormat *format)
{
    bool result;                            /* Bilan à retourner           */
    vmpa2t pos;                             /* Localisation des symboles   */


    result = annotate_mclf_intro(format, &pos);

    result &= annotate_mclf_header_v1(format, &pos);

    result &= annotate_mclf_text_segment_header(format, &pos);

    return result;

}