mirror of
https://github.com/JayDDee/cpuminer-opt.git
synced 2025-09-17 23:44:27 +00:00
92 lines
2.4 KiB
C
92 lines
2.4 KiB
C
#include "skunk-gate.h"
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#include <stdlib.h>
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#include <stdint.h>
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#include <string.h>
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#include <stdio.h>
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#include "algo/gost/sph_gost.h"
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#include "algo/skein/sph_skein.h"
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#include "algo/fugue/sph_fugue.h"
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#include "algo/cubehash/sse2/cubehash_sse2.h"
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typedef struct {
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sph_skein512_context skein;
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cubehashParam cube;
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sph_fugue512_context fugue;
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sph_gost512_context gost;
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} skunk_ctx_holder;
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static __thread skunk_ctx_holder skunk_ctx;
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void skunkhash( void *output, const void *input )
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{
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unsigned char hash[128] __attribute__ ((aligned (64)));
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skunk_ctx_holder ctx __attribute__ ((aligned (64)));
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memcpy( &ctx, &skunk_ctx, sizeof(skunk_ctx) );
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sph_skein512( &ctx.skein, input+64, 16 );
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sph_skein512_close( &ctx.skein, (void*) hash );
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cubehashUpdateDigest( &ctx.cube, (byte*) hash, (const byte*)hash, 64 );
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sph_fugue512( &ctx.fugue, hash, 64 );
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sph_fugue512_close( &ctx.fugue, hash );
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sph_gost512( &ctx.gost, hash, 64 );
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sph_gost512_close( &ctx.gost, hash );
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memcpy(output, hash, 32);
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}
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int scanhash_skunk( 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 *pdata = work->data;
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uint32_t *ptarget = work->target;
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const uint32_t first_nonce = pdata[19];
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uint32_t _ALIGN(64) endiandata[20];
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uint32_t nonce = first_nonce;
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volatile uint8_t *restart = &(work_restart[thr_id].restart);
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if ( opt_benchmark )
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((uint32_t*)ptarget)[7] = 0x0cff;
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for ( int k = 0; k < 19; k++ )
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be32enc( &endiandata[k], pdata[k] );
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// precalc midstate
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sph_skein512_init( &skunk_ctx.skein );
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sph_skein512( &skunk_ctx.skein, endiandata, 64 );
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const uint32_t Htarg = ptarget[7];
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do
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{
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uint32_t hash[8];
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be32enc( &endiandata[19], nonce );
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skunkhash( hash, endiandata );
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if ( hash[7] <= Htarg && fulltest( hash, ptarget ) )
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{
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pdata[19] = nonce;
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*hashes_done = pdata[19] - first_nonce;
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work_set_target_ratio( work, hash );
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return 1;
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}
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nonce++;
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} while ( nonce < max_nonce && !(*restart) );
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pdata[19] = nonce;
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*hashes_done = pdata[19] - first_nonce + 1;
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return 0;
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}
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bool skunk_thread_init()
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{
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sph_skein512_init( &skunk_ctx.skein );
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cubehashInit( &skunk_ctx.cube, 512, 16, 32 );
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sph_fugue512_init( &skunk_ctx.fugue );
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sph_gost512_init( &skunk_ctx.gost );
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return true;
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}
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