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 "cuda_groestlcoin.h"
#include "miner.h"
#define SWAP32(x) \
((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u) | \
(((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu))
// CPU-groestl
extern "C" void groestlhash(void *state, const void *input)
{
sph_groestl512_context ctx_groestl;
//these uint512 in the c++ source of the client are backed by an array of uint32
uint32_t hashA[16], hashB[16];
sph_groestl512_init(&ctx_groestl);
sph_groestl512 (&ctx_groestl, input, 80); //6
sph_groestl512_close(&ctx_groestl, hashA); //7
sph_groestl512_init(&ctx_groestl);
sph_groestl512 (&ctx_groestl, hashA, 64); //6
sph_groestl512_close(&ctx_groestl, hashB); //7
memcpy(state, hashB, 32);
}
static bool init[MAX_GPUS] = { 0 };
extern "C" int scanhash_groestlcoin(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, unsigned long *hashes_done)
{
uint32_t start_nonce = pdata[19]++;
uint32_t throughput = device_intensity(thr_id, __func__, 1 << 19); // 256*256*8
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] = 0x000000ff;
// init
if(!init[thr_id])
{
groestlcoin_cpu_init(thr_id, throughput);
init[thr_id] = true;
}
// Endian Drehung ist notwendig
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 später ersetzt)
groestlcoin_cpu_setBlock(thr_id, endiandata, (void*)ptarget);
do {
// GPU
uint32_t foundNounce = 0xFFFFFFFF;
const uint32_t Htarg = ptarget[7];
groestlcoin_cpu_hash(thr_id, throughput, pdata[19], outputHash, &foundNounce);
if(foundNounce < 0xffffffff)
{
uint32_t tmpHash[8];
endiandata[19] = SWAP32(foundNounce);
groestlhash(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 (pdata[19] + throughput < pdata[19])
pdata[19] = max_nonce;
else pdata[19] += throughput;
} while (pdata[19] < max_nonce && !work_restart[thr_id].restart);
*hashes_done = pdata[19] - start_nonce + 1;
free(outputHash);
return 0;
}