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#ifndef SILK_MACROS_LX7_H
#define SILK_MACROS_LX7_H

/* This macro only avoids the undefined behaviour from a left shift of
   a negative value. It should only be used in macros that can't include
   SigProc_FIX.h. In other cases, use silk_LSHIFT32(). */
#define SAFE_SHL(a, b) ((opus_int32)((opus_uint32)(a) << (b)))

/* (a32 * (opus_int32)((opus_int16)(b32))) >> 16 output have to be 32bit int */
#undef silk_SMULWB
static OPUS_INLINE opus_int32 silk_SMULWB_lx7(opus_int32 a32, opus_int32 b32)
{
    opus_int32 res;
    __asm__(
        "mulsh %0, %1, %2\n\t"
        : "=r"(res)
        : "r"(a32), "r"(SAFE_SHL(b32, 16))
    );
    return res;
}
#define silk_SMULWB(a32, b32) (silk_SMULWB_lx7(a32, b32))

/* a32 + (b32 * (opus_int32)((opus_int16)(c32))) >> 16 output have to be 32bit int */
#undef silk_SMLAWB
#define silk_SMLAWB(a32, b32, c32) ((a32) + silk_SMULWB(b32, c32))

/* (a32 * (b32 >> 16)) >> 16 */
#undef silk_SMULWT
static OPUS_INLINE opus_int32 silk_SMULWT_lx7(opus_int32 a32, opus_int32 b32)
{
    opus_int32 res;
    __asm__(
        "mulsh %0, %1, %2\n\t"
        : "=r"(res)
        : "r"(a32), "r"(SAFE_SHL(b32 >> 16, 16))
    );
    return res;
}

/* a32 + (b32 * (c32 >> 16)) >> 16 */
#undef silk_SMLAWT
#define silk_SMLAWT(a32, b32, c32) ((a32) + silk_SMULWT_lx7(b32, c32))

#undef silk_CLZ32
static OPUS_INLINE opus_int32 silk_CLZ32_lx7(opus_int32 in32)
{
    return __builtin_clz(in32);
}
#define silk_CLZ32(in32) (silk_CLZ32_lx7(in32))

#endif