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https://github.com/JayDDee/cpuminer-opt.git
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100 lines
2.5 KiB
C
100 lines
2.5 KiB
C
#include "blakecoin-gate.h"
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#if !defined(BLAKECOIN_8WAY) && !defined(BLAKECOIN_4WAY)
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#define BLAKE32_ROUNDS 8
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#include "sph_blake.h"
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void blakecoin_init(void *cc);
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void blakecoin(void *cc, const void *data, size_t len);
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void blakecoin_close(void *cc, void *dst);
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#include <string.h>
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#include <stdint.h>
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#include <memory.h>
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#include <openssl/sha.h>
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// context management is staged for efficiency.
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// 1. global initial ctx cached on startup
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// 2. per-thread midstate ctx cache refreshed every scan
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// 3. local ctx for final hash calculation
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static sph_blake256_context blake_init_ctx;
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static __thread sph_blake256_context blake_mid_ctx;
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static void blake_midstate_init( const void* input )
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{
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// copy cached initial state
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memcpy( &blake_mid_ctx, &blake_init_ctx, sizeof blake_mid_ctx );
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blakecoin( &blake_mid_ctx, input, 64 );
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}
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void blakecoinhash( void *state, const void *input )
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{
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sph_blake256_context ctx;
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uint8_t hash[64] __attribute__ ((aligned (32)));
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uint8_t *ending = (uint8_t*) input + 64;
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// copy cached midstate
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memcpy( &ctx, &blake_mid_ctx, sizeof ctx );
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blakecoin( &ctx, ending, 16 );
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blakecoin_close( &ctx, hash );
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memcpy( state, hash, 32 );
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}
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int scanhash_blakecoin( struct work *work, uint32_t max_nonce,
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uint64_t *hashes_done, struct thr_info *mythr )
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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 HTarget = ptarget[7];
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int thr_id = mythr->id; // thr_id arg is deprecated
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uint32_t _ALIGN(32) hash64[8];
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uint32_t _ALIGN(32) endiandata[20];
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uint32_t n = first_nonce;
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if (opt_benchmark)
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HTarget = 0x7f;
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// we need big endian data...
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for (int kk=0; kk < 19; kk++)
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be32enc(&endiandata[kk], ((uint32_t*)pdata)[kk]);
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blake_midstate_init( endiandata );
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#ifdef DEBUG_ALGO
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applog(LOG_DEBUG,"[%d] Target=%08x %08x", thr_id, ptarget[6], ptarget[7]);
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#endif
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do {
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be32enc(&endiandata[19], n);
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blakecoinhash(hash64, endiandata);
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#ifndef DEBUG_ALGO
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if (hash64[7] <= HTarget && fulltest(hash64, ptarget)) {
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*hashes_done = n - first_nonce + 1;
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return true;
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}
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#else
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if (!(n % 0x1000) && !thr_id) printf(".");
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if (hash64[7] == 0) {
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printf("[%d]",thr_id);
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if (fulltest(hash64, ptarget)) {
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*hashes_done = n - first_nonce + 1;
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return true;
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}
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}
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#endif
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n++; pdata[19] = n;
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} while (n < max_nonce && !work_restart[thr_id].restart);
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*hashes_done = n - first_nonce + 1;
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pdata[19] = n;
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return 0;
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}
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#endif
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