/* Chrysalide - Outil d'analyse de fichiers binaires
 * helpers.h - prototypes pour l'aide à la mise en place des opérandes ARMv7
 *
 * Copyright (C) 2014 Cyrille Bagard
 *
 *  This file is part of Chrysalide.
 *
 *  OpenIDA 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.
 *
 *  OpenIDA 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/>.
 */


#ifndef _ARCH_ARM_V7_HELPERS_H
#define _ARCH_ARM_V7_HELPERS_H


#include <libio.h>


#include "pseudo.h"
#include "operands/shift.h"
#include "../../operand.h"





#define ARMExpandImm_C(imm12, c)                                    \
    ({                                                              \
        uint32_t __val;                                             \
        __val = armv7_arm_expand_imm_c(imm12, (bool []) { c });     \
        g_imm_operand_new_from_value(MDS_32_BITS_UNSIGNED, __val);  \
    })

#define ARMExpandImm(imm12)                                         \
    ({                                                              \
        uint32_t __val;                                             \
        __val = armv7_arm_expand_imm_c(imm12, NULL);                \
        g_imm_operand_new_from_value(MDS_32_BITS_UNSIGNED, __val);  \
    })

#define DecodeImmShift(type, imm5)				                                    \
	({                                                                              \
        GArchOperand *__result;                                                     \
        SRType __shift_t;                                                           \
        uint32_t __shift_n;                                                         \
        GArchOperand *__op_n;                                                       \
        if (!armv7_decode_imm_shift(type, imm5, &__shift_t, &__shift_n))            \
            __result = NULL;                                                        \
        else                                                                        \
        {                                                                           \
            __op_n = g_imm_operand_new_from_value(MDS_32_BITS_UNSIGNED, __shift_n); \
            __result = g_armv7_shift_operand_new(__shift_t, __op_n);                \
        }                                                                           \
        __result;                                                                   \
    })



#if 0
// DecodeRegShift()
// ================
SRType DecodeRegShift(bits(2) type)
case type of
when '00' shift_t = SRType_LSL;
when '01' shift_t = SRType_LSR;
when '10' shift_t = SRType_ASR;
when '11' shift_t = SRType_ROR;
return shift_t;
#endif



#define ZeroExtend(x, n, i)                             \
    ({                                                  \
        MemoryDataSize __mds;                           \
        uint ## i ## _t __val;                          \
        mds = MDS_ ## sz ## _BITS_UNSIGNED;             \
        __val = armv7_zero_extend(x, n, i);             \
        g_imm_operand_new_from_value(__mds, __val);     \
    })



#define Zeros(i)                                        \
    ({                                                  \
        MemoryDataSize __mds;                           \
        uint ## i ## _t __val;                          \
        mds = MDS_ ## sz ## _BITS_UNSIGNED;             \
        __val = 0;                                      \
        g_imm_operand_new_from_value(__mds, __val);     \
    })





/* Effectue une rotation vers la droit d'une valeur. */
GArchOperand *ror_armv7_imm(uint32_t, unsigned int);

/* Crée un opérande de valeur immédiate avec extension de signe. */
GArchOperand *sign_extend_armv7_imm(uint32_t, bool, unsigned int);

/* Etend une valeur immédiate en mode 'Thumb' ARMv7. */
GArchOperand *thumb_expand_armv7_imm(uint32_t);

/* Crée un opérande représentant un registre ARMv7. */
GArchOperand *translate_armv7_register(uint8_t);

/* Réalise un simple transtypage de valeur entière. */
GArchOperand *zero_extend_armv7_imm(uint32_t, unsigned int);



#endif  /* _ARCH_ARM_V7_HELPERS_H */