GOSTcoin support for ccminer CUDA miner project, compatible with most nvidia cards
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#include <string.h>
#include <stdint.h>
#include <openssl/sha.h>
#include "uint256.h"
#include "sph/sph_groestl.h"
#include "miner.h"
void myriadgroestl_cpu_init(int thr_id, int threads);
void myriadgroestl_cpu_setBlock(int thr_id, void *data, void *pTargetIn);
void myriadgroestl_cpu_hash(int thr_id, int threads, uint32_t startNounce, void *outputHashes, uint32_t *nounce);
#define SWAP32(x) \
((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u) | \
(((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu))
extern "C" void myriadhash(void *state, const void *input)
{
sph_groestl512_context ctx_groestl;
uint32_t hashA[16], hashB[16];
sph_groestl512_init(&ctx_groestl);
sph_groestl512 (&ctx_groestl, input, 80);
sph_groestl512_close(&ctx_groestl, hashA);
SHA256_CTX sha256;
SHA256_Init(&sha256);
SHA256_Update(&sha256,(unsigned char *)hashA, 64);
SHA256_Final((unsigned char *)hashB, &sha256);
memcpy(state, hashB, 32);
}
extern bool opt_benchmark;
extern "C" int scanhash_myriad(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, unsigned long *hashes_done)
{
if (opt_benchmark)
((uint32_t*)ptarget)[7] = 0x000000ff;
uint32_t start_nonce = pdata[19]++;
uint32_t throughPut = opt_work_size ? opt_work_size : (1 << 17);
throughPut = min(throughPut, max_nonce - start_nonce);
uint32_t *outputHash = (uint32_t*)malloc(throughPut * 16 * sizeof(uint32_t));
if (opt_benchmark)
((uint32_t*)ptarget)[7] = 0x0000ff;
// init
static bool init[8] = { false, false, false, false, false, false, false, false };
if(!init[thr_id])
{
#if BIG_DEBUG
#else
myriadgroestl_cpu_init(thr_id, throughPut);
#endif
init[thr_id] = true;
}
uint32_t endiandata[32];
for (int kk=0; kk < 32; kk++)
be32enc(&endiandata[kk], pdata[kk]);
// Context mit dem Endian gedrehten Blockheader vorbereiten (Nonce wird sp<EFBFBD>ter ersetzt)
myriadgroestl_cpu_setBlock(thr_id, endiandata, (void*)ptarget);
do {
// GPU
uint32_t foundNounce = 0xFFFFFFFF;
const uint32_t Htarg = ptarget[7];
myriadgroestl_cpu_hash(thr_id, throughPut, pdata[19], outputHash, &foundNounce);
if(foundNounce < 0xffffffff)
{
uint32_t tmpHash[8];
endiandata[19] = SWAP32(foundNounce);
myriadhash(tmpHash, endiandata);
if (tmpHash[7] <= Htarg &&
fulltest(tmpHash, ptarget)) {
pdata[19] = foundNounce;
*hashes_done = foundNounce - start_nonce + 1;
free(outputHash);
return true;
} else {
applog(LOG_INFO, "GPU #%d: result for nonce $%08X does not validate on CPU!", thr_id, foundNounce);
}
foundNounce = 0xffffffff;
}
if ((uint64_t) pdata[19] + throughPut > (uint64_t) max_nonce) {
pdata[19] = max_nonce;
break;
}
pdata[19] += throughPut;
} while (!work_restart[thr_id].restart);
*hashes_done = pdata[19] - start_nonce + 1;
free(outputHash);
return 0;
}