blake2-round.h

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#define _mm_roti_epi64(x, c) \
        (-(c) == 32) ? _mm_shuffle_epi32((x), _MM_SHUFFLE(2,3,0,1))  \
        : (-(c) == 24) ? _mm_shuffle_epi8((x), r24) \
        : (-(c) == 16) ? _mm_shuffle_epi8((x), r16) \
        : (-(c) == 63) ? _mm_xor_si128(_mm_srli_epi64((x), -(c)), _mm_add_epi64((x), (x)))  \
        : _mm_xor_si128(_mm_srli_epi64((x), -(c)), _mm_slli_epi64((x), 64-(-(c))))

#define G1(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h) \
        row1l = _mm_add_epi64(row1l, row2l); \
        row1h = _mm_add_epi64(row1h, row2h); \
        \
        row4l = _mm_xor_si128(row4l, row1l); \
        row4h = _mm_xor_si128(row4h, row1h); \
        \
        row4l = _mm_roti_epi64(row4l, -32); \
        row4h = _mm_roti_epi64(row4h, -32); \
        \
        row3l = _mm_add_epi64(row3l, row4l); \
        row3h = _mm_add_epi64(row3h, row4h); \
        \
        row2l = _mm_xor_si128(row2l, row3l); \
        row2h = _mm_xor_si128(row2h, row3h); \
        \
        row2l = _mm_roti_epi64(row2l, -24); \
        row2h = _mm_roti_epi64(row2h, -24); \
 
#define G2(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h) \
        row1l = _mm_add_epi64(row1l, row2l); \
        row1h = _mm_add_epi64(row1h, row2h); \
        \
        row4l = _mm_xor_si128(row4l, row1l); \
        row4h = _mm_xor_si128(row4h, row1h); \
        \
        row4l = _mm_roti_epi64(row4l, -16); \
        row4h = _mm_roti_epi64(row4h, -16); \
        \
        row3l = _mm_add_epi64(row3l, row4l); \
        row3h = _mm_add_epi64(row3h, row4h); \
        \
        row2l = _mm_xor_si128(row2l, row3l); \
        row2h = _mm_xor_si128(row2h, row3h); \
        \
        row2l = _mm_roti_epi64(row2l, -63); \
        row2h = _mm_roti_epi64(row2h, -63); \

#define DIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h) \
        t0 = _mm_alignr_epi8(row2h, row2l, 8); \
        t1 = _mm_alignr_epi8(row2l, row2h, 8); \
        row2l = t0; \
        row2h = t1; \
        \
        t0 = row3l; \
        row3l = row3h; \
        row3h = t0;    \
        \
        t0 = _mm_alignr_epi8(row4h, row4l, 8); \
        t1 = _mm_alignr_epi8(row4l, row4h, 8); \
        row4l = t1; \
        row4h = t0;

#define UNDIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h) \
        t0 = _mm_alignr_epi8(row2l, row2h, 8); \
        t1 = _mm_alignr_epi8(row2h, row2l, 8); \
        row2l = t0; \
        row2h = t1; \
        \
        t0 = row3l; \
        row3l = row3h; \
        row3h = t0; \
        \
        t0 = _mm_alignr_epi8(row4l, row4h, 8); \
        t1 = _mm_alignr_epi8(row4h, row4l, 8); \
        row4l = t1; \
        row4h = t0;

#define BLAKE2_ROUND(row1l,row1h,row2l,row2h,row3l,row3h,row4l,row4h) \
        G1(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h); \
        G2(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h); \
        \
        DIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h); \
        \
        G1(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h); \
        G2(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h); \
        \
        UNDIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h);