GOSTCoin CUDA miner project, compatible with most nvidia cards, containing only gostd algo
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/*
* whirlpool routine (djm)
* whirlpoolx routine (provos alexis, tpruvot)
*/
extern "C" {
#include "sph/sph_whirlpool.h"
}
#include "miner.h"
#include "cuda_helper.h"
static uint32_t *d_hash[MAX_GPUS] = { 0 };
extern void whirlpoolx_cpu_init(int thr_id, uint32_t threads);
extern void whirlpoolx_cpu_free(int thr_id);
extern void whirlpoolx_setBlock_80(void *pdata, const void *ptarget);
extern uint32_t whirlpoolx_cpu_hash(int thr_id, uint32_t threads, uint32_t startNounce);
extern void whirlpoolx_precompute(int thr_id);
// CPU Hash function
extern "C" void whirlxHash(void *state, const void *input)
{
sph_whirlpool_context ctx_whirlpool;
unsigned char hash[64];
unsigned char hash_xored[32];
sph_whirlpool_init(&ctx_whirlpool);
sph_whirlpool(&ctx_whirlpool, input, 80);
sph_whirlpool_close(&ctx_whirlpool, hash);
// compress the 48 first bytes of the hash to 32
for (int i = 0; i < 32; i++) {
hash_xored[i] = hash[i] ^ hash[i + 16];
}
memcpy(state, hash_xored, 32);
}
static bool init[MAX_GPUS] = { 0 };
extern "C" int scanhash_whirlx(int thr_id, struct work* work, uint32_t max_nonce, unsigned long *hashes_done)
{
uint32_t *pdata = work->data;
uint32_t *ptarget = work->target;
const uint32_t first_nonce = pdata[19];
uint32_t endiandata[20];
int intensity = is_windows() ? 20 : 22;
uint32_t throughput = cuda_default_throughput(thr_id, 1U << intensity);
if (init[thr_id]) throughput = min(throughput, max_nonce - first_nonce);
if (opt_benchmark)
((uint32_t*)ptarget)[7] = 0x0000ff;
if (!init[thr_id]) {
cudaSetDevice(device_map[thr_id]);
CUDA_CALL_OR_RET_X(cudaMalloc(&d_hash[thr_id], (size_t) 64 * throughput), 0);
whirlpoolx_cpu_init(thr_id, throughput);
init[thr_id] = true;
}
for (int k=0; k < 20; k++) {
be32enc(&endiandata[k], pdata[k]);
}
whirlpoolx_setBlock_80((void*)endiandata, ptarget);
whirlpoolx_precompute(thr_id);
do {
uint32_t foundNonce = whirlpoolx_cpu_hash(thr_id, throughput, pdata[19]);
if (foundNonce != UINT32_MAX)
{
const uint32_t Htarg = ptarget[7];
uint32_t vhash64[8];
be32enc(&endiandata[19], foundNonce);
whirlxHash(vhash64, endiandata);
*hashes_done = pdata[19] - first_nonce + throughput;
if (vhash64[7] <= Htarg && fulltest(vhash64, ptarget)) {
work_set_target_ratio(work, vhash64);
pdata[19] = foundNonce;
return 1;
} else {
gpulog(LOG_WARNING, thr_id, "result for %08x does not validate on CPU!", foundNonce);
}
}
pdata[19] += throughput;
if (((uint64_t)pdata[19]+throughput) >= max_nonce) {
break;
}
} while (!work_restart[thr_id].restart);
*(hashes_done) = pdata[19] - first_nonce + 1;
return 0;
}
// cleanup
extern "C" void free_whirlx(int thr_id)
{
if (!init[thr_id])
return;
cudaSetDevice(device_map[thr_id]);
cudaFree(d_hash[thr_id]);
whirlpoolx_cpu_free(thr_id);
init[thr_id] = false;
cudaDeviceSynchronize();
}