mirror of
https://github.com/JayDDee/cpuminer-opt.git
synced 2025-09-17 23:44:27 +00:00
99 lines
2.2 KiB
C
99 lines
2.2 KiB
C
#include "miner.h"
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#include "algo-gate-api.h"
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#include <string.h>
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#include <stdint.h>
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#include "sph_skein.h"
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#if defined __SHA__
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#include <openssl/sha.h>
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#else
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#include "algo/sha/sph_sha2.h"
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#endif
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typedef struct {
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sph_skein512_context skein;
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#if defined __SHA__
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SHA256_CTX sha256;
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#else
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sph_sha256_context sha256;
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#endif
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} skein_ctx_holder;
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skein_ctx_holder skein_ctx;
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void init_skein_ctx()
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{
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sph_skein512_init( &skein_ctx.skein );
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#if defined __SHA__
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SHA256_Init( &skein_ctx.sha256 );
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#else
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sph_sha256_init( &skein_ctx.sha256 );
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#endif
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}
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void skeinhash(void *state, const void *input)
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{
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skein_ctx_holder ctx __attribute__ ((aligned (64)));
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memcpy( &ctx, &skein_ctx, sizeof(skein_ctx) );
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uint32_t hash[16] __attribute__ ((aligned (64)));
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sph_skein512( &ctx.skein, input, 80 );
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sph_skein512_close( &ctx.skein, hash );
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#if defined __SHA__
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SHA256_Update( &ctx.sha256, hash, 64 );
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SHA256_Final( (unsigned char*) hash, &ctx.sha256 );
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#else
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sph_sha256( &ctx.sha256, hash, 64 );
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sph_sha256_close( &ctx.sha256, hash );
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#endif
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memcpy(state, hash, 32);
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}
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int scanhash_skein(int thr_id, struct work *work,
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uint32_t max_nonce, 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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uint32_t hash64[8] __attribute__ ((aligned (64)));
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uint32_t endiandata[20] __attribute__ ((aligned (64)));
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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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swab32_array( endiandata, pdata, 20 );
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do {
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be32enc(&endiandata[19], n);
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skeinhash(hash64, endiandata);
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if (hash64[7] < Htarg && fulltest(hash64, ptarget)) {
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*hashes_done = n - first_nonce + 1;
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pdata[19] = n;
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return true;
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}
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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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int64_t skein_get_max64() { return 0x7ffffLL; }
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bool register_skein_algo( algo_gate_t* gate )
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{
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init_skein_ctx();
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gate->optimizations = SSE2_OPT | SHA_OPT;
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gate->scanhash = (void*)&scanhash_skein;
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gate->hash = (void*)&skeinhash;
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gate->get_max64 = (void*)&skein_get_max64;
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return true;
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};
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