text: /*
     BLAKE2 reference source code package - optimized C implementations
  
     Copyright 2012, Samuel Neves <sneves@dei.uc.pt>.  You may use this under the
     terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
     your option.  The terms of these licenses can be found at:
  
     - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
     - OpenSSL license   : https://www.openssl.org/source/license.html
     - Apache 2.0        : http://www.apache.org/licenses/LICENSE-2.0
  
     More information about the BLAKE2 hash function can be found at
     https://blake2.net.
  */
  #ifndef BLAKE2S_ROUND_H
  #define BLAKE2S_ROUND_H
  
  #define LOADU(p)  _mm_loadu_si128( (const __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_epi32(r, c) ( \
                  (8==-(c)) ? _mm_shuffle_epi8(r,r8) \
                : (16==-(c)) ? _mm_shuffle_epi8(r,r16) \
                : _mm_xor_si128(_mm_srli_epi32( (r), -(c) ),_mm_slli_epi32( (r), 32-(-(c)) )) )
  #else
  #define _mm_roti_epi32(r, c) _mm_xor_si128(_mm_srli_epi32( (r), -(c) ),_mm_slli_epi32( (r), 32-(-(c)) ))
  #endif
  #else
  /* ... */
  #endif
  
  
  #define G1(row1,row2,row3,row4,buf) \
    row1 = _mm_add_epi32( _mm_add_epi32( row1, buf), row2 ); \
    row4 = _mm_xor_si128( row4, row1 ); \
    row4 = _mm_roti_epi32(row4, -16); \
    row3 = _mm_add_epi32( row3, row4 );   \
    row2 = _mm_xor_si128( row2, row3 ); \
    row2 = _mm_roti_epi32(row2, -12);
  
  #define G2(row1,row2,row3,row4,buf) \
    row1 = _mm_add_epi32( _mm_add_epi32( row1, buf), row2 ); \
    row4 = _mm_xor_si128( row4, row1 ); \
    row4 = _mm_roti_epi32(row4, -8); \
    row3 = _mm_add_epi32( row3, row4 );   \
    row2 = _mm_xor_si128( row2, row3 ); \
    row2 = _mm_roti_epi32(row2, -7);
  
  #define DIAGONALIZE(row1,row2,row3,row4) \
    row1 = _mm_shuffle_epi32( row1, _MM_SHUFFLE(2,1,0,3) ); \
    row4 = _mm_shuffle_epi32( row4, _MM_SHUFFLE(1,0,3,2) ); \
    row3 = _mm_shuffle_epi32( row3, _MM_SHUFFLE(0,3,2,1) );
  
  #define UNDIAGONALIZE(row1,row2,row3,row4) \
    row1 = _mm_shuffle_epi32( row1, _MM_SHUFFLE(0,3,2,1) ); \
    row4 = _mm_shuffle_epi32( row4, _MM_SHUFFLE(1,0,3,2) ); \
    row3 = _mm_shuffle_epi32( row3, _MM_SHUFFLE(2,1,0,3) );
  
  #if defined(HAVE_XOP)
  #include "blake2s-load-xop.h"
  #elif defined(HAVE_SSE41)
  #include "blake2s-load-sse41.h"
  #else
  #include "blake2s-load-sse2.h"
  #endif
  
  #define ROUND(r)  \
    LOAD_MSG_ ##r ##_1(buf1); \
    G1(row1,row2,row3,row4,buf1); \
    LOAD_MSG_ ##r ##_2(buf2); \
    G2(row1,row2,row3,row4,buf2); \
    DIAGONALIZE(row1,row2,row3,row4); \
    LOAD_MSG_ ##r ##_3(buf3); \
    G1(row1,row2,row3,row4,buf3); \
    LOAD_MSG_ ##r ##_4(buf4); \
    G2(row1,row2,row3,row4,buf4); \
    UNDIAGONALIZE(row1,row2,row3,row4); \
  
  #endif
  