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https://github.com/JayDDee/cpuminer-opt.git
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75 lines
2.0 KiB
C
75 lines
2.0 KiB
C
#include "skein2-gate.h"
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#include <string.h>
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#include <stdint.h>
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#include "skein-hash-4way.h"
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#if defined(SKEIN2_4WAY)
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void skein2hash_4way( void *output, const void *input )
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{
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skein512_4way_context ctx;
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uint64_t hash[8*4] __attribute__ ((aligned (64)));
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skein512_4way_init( &ctx );
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skein512_4way( &ctx, input, 80 );
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skein512_4way_close( &ctx, hash );
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skein512_4way_init( &ctx );
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skein512_4way( &ctx, hash, 64 );
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skein512_4way_close( &ctx, output );
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}
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int scanhash_skein2_4way( int thr_id, struct work *work, uint32_t max_nonce,
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uint64_t *hashes_done )
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{
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uint32_t hash[8*4] __attribute__ ((aligned (64)));
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uint32_t *hash7 = &(hash[25]);
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uint32_t vdata[20*4] __attribute__ ((aligned (64)));
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uint32_t endiandata[20] __attribute__ ((aligned (64)));
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uint64_t *edata = (uint64_t*)endiandata;
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uint32_t *pdata = work->data;
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uint32_t *ptarget = work->target;
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const uint32_t Htarg = ptarget[7];
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const uint32_t first_nonce = pdata[19];
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uint32_t n = first_nonce;
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uint32_t *nonces = work->nonces;
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int num_found = 0;
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swab32_array( endiandata, pdata, 20 );
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mm256_interleave_4x64( vdata, edata, edata, edata, edata, 640 );
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uint32_t *noncep = vdata + 73; // 9*8 + 1
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do
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{
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be32enc( noncep, n );
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be32enc( noncep+2, n+1 );
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be32enc( noncep+4, n+2 );
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be32enc( noncep+6, n+3 );
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skein2hash( hash, vdata );
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for ( int lane = 0; lane < 4; lane++ )
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if ( hash7[ lane ] <= Htarg )
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{
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// deinterleave hash for lane
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uint32_t lane_hash[8];
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mm256_extract_lane_4x64( lane_hash, hash, lane, 256 );
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if ( fulltest( lane_hash, ptarget ) )
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{
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pdata[19] = n + lane;
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nonces[ num_found++ ] = n + lane;
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work_set_target_ratio( work, lane_hash );
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}
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}
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n += 4;
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} while ( (num_found == 0) && (n < max_nonce)
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&& !work_restart[thr_id].restart );
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*hashes_done = n - first_nonce + 1;
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return num_found;
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}
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#endif
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