FreeBSD/Linux Kernel Cross Reference
sys/contrib/libb2/blake2b-round.h

     /*
        BLAKE2 reference source code package - optimized C implementations
     
        Written in 2012 by Samuel Neves <sneves@dei.uc.pt>
     
        To the extent possible under law, the author(s) have dedicated all copyright
        and related and neighboring rights to this software to the public domain
        worldwide. This software is distributed without any warranty.
     
       You should have received a copy of the CC0 Public Domain Dedication along with
       this software. If not, see <http://creativecommons.org/publicdomain/zero/1.0/>.
    */
    #pragma once
    #ifndef __BLAKE2B_ROUND_H__
    #define __BLAKE2B_ROUND_H__
    
    #define LOAD(p)  _mm_load_si128( (__m128i *)(p) )
    #define STORE(p,r) _mm_store_si128((__m128i *)(p), r)
    
    #define LOADU(p)  _mm_loadu_si128( (__m128i *)(p) )
    #define STOREU(p,r) _mm_storeu_si128((__m128i *)(p), r)
    
    #define TOF(reg) _mm_castsi128_ps((reg))
    #define TOI(reg) _mm_castps_si128((reg))
    
    #define LIKELY(x) __builtin_expect((x),1)
    
    
    /* Microarchitecture-specific macros */
    #ifndef HAVE_XOP
    #ifdef HAVE_SSSE3
    #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))))
    #else
    #define _mm_roti_epi64(r, c) _mm_xor_si128(_mm_srli_epi64( (r), -(c) ),_mm_slli_epi64( (r), 64-(-(c)) ))
    #endif
    #else
    /* ... */
    #endif
    
    
    
    #define G1(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h,b0,b1) \
      row1l = _mm_add_epi64(_mm_add_epi64(row1l, b0), row2l); \
      row1h = _mm_add_epi64(_mm_add_epi64(row1h, b1), 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,b0,b1) \
      row1l = _mm_add_epi64(_mm_add_epi64(row1l, b0), row2l); \
      row1h = _mm_add_epi64(_mm_add_epi64(row1h, b1), 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); \
     
    #if defined(HAVE_SSSE3)
    #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;
   #else
   
   #define DIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h) \
     t0 = row4l;\
     t1 = row2l;\
     row4l = row3l;\
     row3l = row3h;\
     row3h = row4l;\
     row4l = _mm_unpackhi_epi64(row4h, _mm_unpacklo_epi64(t0, t0)); \
     row4h = _mm_unpackhi_epi64(t0, _mm_unpacklo_epi64(row4h, row4h)); \
     row2l = _mm_unpackhi_epi64(row2l, _mm_unpacklo_epi64(row2h, row2h)); \
     row2h = _mm_unpackhi_epi64(row2h, _mm_unpacklo_epi64(t1, t1))
   
   #define UNDIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h) \
     t0 = row3l;\
     row3l = row3h;\
     row3h = t0;\
     t0 = row2l;\
     t1 = row4l;\
     row2l = _mm_unpackhi_epi64(row2h, _mm_unpacklo_epi64(row2l, row2l)); \
     row2h = _mm_unpackhi_epi64(t0, _mm_unpacklo_epi64(row2h, row2h)); \
     row4l = _mm_unpackhi_epi64(row4l, _mm_unpacklo_epi64(row4h, row4h)); \
     row4h = _mm_unpackhi_epi64(row4h, _mm_unpacklo_epi64(t1, t1))
   
   #endif
   
   #if defined(HAVE_SSE4_1)
   #include "blake2b-load-sse41.h"
   #else
   #include "blake2b-load-sse2.h"
   #endif
   
   #define ROUND(r) \
     LOAD_MSG_ ##r ##_1(b0, b1); \
     G1(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h,b0,b1); \
     LOAD_MSG_ ##r ##_2(b0, b1); \
     G2(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h,b0,b1); \
     DIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h); \
     LOAD_MSG_ ##r ##_3(b0, b1); \
     G1(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h,b0,b1); \
     LOAD_MSG_ ##r ##_4(b0, b1); \
     G2(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h,b0,b1); \
     UNDIAGONALIZE(row1l,row2l,row3l,row4l,row1h,row2h,row3h,row4h);
   
   #endif
   

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