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#include <string.h> |
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#include <stdint.h> |
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#include <openssl/sha.h> |
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#include "uint256.h" |
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#include "sph/sph_groestl.h" |
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#include "cuda_groestlcoin.h" |
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#include "miner.h" |
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#define SWAP32(x) \ |
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((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u) | \ |
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(((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu)) |
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void sha256func(unsigned char *hash, const unsigned char *data, int len) |
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{ |
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uint32_t S[16], T[16]; |
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int i, r; |
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sha256_init(S); |
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for (r = len; r > -9; r -= 64) { |
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if (r < 64) |
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memset(T, 0, 64); |
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memcpy(T, data + len - r, r > 64 ? 64 : (r < 0 ? 0 : r)); |
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if (r >= 0 && r < 64) |
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((unsigned char *)T)[r] = 0x80; |
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for (i = 0; i < 16; i++) |
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T[i] = be32dec(T + i); |
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if (r < 56) |
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T[15] = 8 * len; |
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sha256_transform(S, T, 0); |
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} |
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/* |
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memcpy(S + 8, sha256d_hash1 + 8, 32); |
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sha256_init(T); |
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sha256_transform(T, S, 0); |
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*/ |
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for (i = 0; i < 8; i++) |
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be32enc((uint32_t *)hash + i, T[i]); |
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} |
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extern "C" void groestlhash(void *state, const void *input) |
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{ |
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// CPU-groestl |
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sph_groestl512_context ctx_groestl[2]; |
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//these uint512 in the c++ source of the client are backed by an array of uint32 |
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uint32_t hashA[16], hashB[16]; |
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sph_groestl512_init(&ctx_groestl[0]); |
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sph_groestl512 (&ctx_groestl[0], input, 80); //6 |
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sph_groestl512_close(&ctx_groestl[0], hashA); //7 |
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sph_groestl512_init(&ctx_groestl[1]); |
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sph_groestl512 (&ctx_groestl[1], hashA, 64); //6 |
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sph_groestl512_close(&ctx_groestl[1], hashB); //7 |
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memcpy(state, hashB, 32); |
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} |
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static bool init[MAX_GPUS] = { 0 }; |
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extern "C" int scanhash_groestlcoin(int thr_id, uint32_t *pdata, const uint32_t *ptarget, |
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uint32_t max_nonce, unsigned long *hashes_done) |
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{ |
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uint32_t start_nonce = pdata[19]++; |
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uint32_t throughput = opt_work_size ? opt_work_size : (1 << 19); // 256*2048 |
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apiReportThroughput(thr_id, throughput); |
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throughput = min(throughput, max_nonce - start_nonce); |
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uint32_t *outputHash = (uint32_t*)malloc(throughput * 16 * sizeof(uint32_t)); |
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if (opt_benchmark) |
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((uint32_t*)ptarget)[7] = 0x000000ff; |
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// init |
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if(!init[thr_id]) |
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{ |
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groestlcoin_cpu_init(thr_id, throughput); |
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init[thr_id] = true; |
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} |
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// Endian Drehung ist notwendig |
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uint32_t endiandata[32]; |
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for (int kk=0; kk < 32; kk++) |
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be32enc(&endiandata[kk], pdata[kk]); |
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// Context mit dem Endian gedrehten Blockheader vorbereiten (Nonce wird sp<EFBFBD>ter ersetzt) |
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groestlcoin_cpu_setBlock(thr_id, endiandata, (void*)ptarget); |
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do { |
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// GPU |
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uint32_t foundNounce = 0xFFFFFFFF; |
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const uint32_t Htarg = ptarget[7]; |
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groestlcoin_cpu_hash(thr_id, throughput, pdata[19], outputHash, &foundNounce); |
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if(foundNounce < 0xffffffff) |
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{ |
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uint32_t tmpHash[8]; |
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endiandata[19] = SWAP32(foundNounce); |
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groestlhash(tmpHash, endiandata); |
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if (tmpHash[7] <= Htarg && fulltest(tmpHash, ptarget)) { |
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pdata[19] = foundNounce; |
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*hashes_done = foundNounce - start_nonce + 1; |
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free(outputHash); |
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return true; |
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} else { |
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applog(LOG_INFO, "GPU #%d: result for nonce $%08X does not validate on CPU!", thr_id, foundNounce); |
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} |
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foundNounce = 0xffffffff; |
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} |
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if (pdata[19] + throughput < pdata[19]) |
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pdata[19] = max_nonce; |
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else pdata[19] += throughput; |
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} while (pdata[19] < max_nonce && !work_restart[thr_id].restart); |
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*hashes_done = pdata[19] - start_nonce + 1; |
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free(outputHash); |
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return 0; |
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} |
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