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  1.         // If genesis block hash does not match, then generate new genesis hash.
  2.         if (true && block.GetHash() != hashGenesisBlock)
  3.         {
  4.             printf("Searching for genesis block...\n");
  5.             // This will figure out a valid hash and Nonce if you're
  6.             // creating a different genesis block:
  7.             uint256 hashTarget = CBigNum().SetCompact(block.nBits).getuint256();
  8.             uint256 thash;
  9.             char scratchpad[SCRYPT_SCRATCHPAD_SIZE];
  10.  
  11.             loop
  12.             {
  13. #if defined(USE_SSE2)
  14.                 // Detection would work, but in cases where we KNOW it always has SSE2,
  15.                 // it is faster to use directly than to use a function pointer or conditional.
  16. #if defined(_M_X64) || defined(__x86_64__) || defined(_M_AMD64) || (defined(MAC_OSX) && defined(__i386__))
  17.                 // Always SSE2: x86_64 or Intel MacOS X
  18.                 scrypt_1024_1_1_256_sp_sse2(BEGIN(block.nVersion), BEGIN(thash), scratchpad);
  19. #else
  20.                 // Detect SSE2: 32bit x86 Linux or Windows
  21.                 scrypt_1024_1_1_256_sp(BEGIN(block.nVersion), BEGIN(thash), scratchpad);
  22. #endif
  23. #else
  24.                 // Generic scrypt
  25.                 scrypt_1024_1_1_256_sp_generic(BEGIN(block.nVersion), BEGIN(thash), scratchpad);
  26. #endif
  27.                 if (thash <= hashTarget)
  28.                     break;
  29.                 if ((block.nNonce & 0xFFF) == 0)
  30.                 {
  31.                     printf("nonce %08X: hash = %s (target = %s)\n", block.nNonce, thash.ToString().c_str(), hashTarget.ToString().c_str());
  32.                 }
  33.                 ++block.nNonce;
  34.                 if (block.nNonce == 0)
  35.                 {
  36.                     printf("NONCE WRAPPED, incrementing time\n");
  37.                     ++block.nTime;
  38.                 }
  39.             }
  40.             printf("block.nTime = %u \n", block.nTime);
  41.             printf("block.nNonce = %u \n", block.nNonce);
  42.             printf("block.GetHash = %s\n", block.GetHash().ToString().c_str());
  43.         }
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