mirror of https://github.com/GOSTSec/sgminer
djm34
10 years ago
12 changed files with 241 additions and 16 deletions
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/*-
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* Copyright 2015 djm34 |
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* All rights reserved. |
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* |
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* Redistribution and use in source and binary forms, with or without |
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* modification, are permitted provided that the following conditions |
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* are met: |
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* 1. Redistributions of source code must retain the above copyright |
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* notice, this list of conditions and the following disclaimer. |
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* 2. Redistributions in binary form must reproduce the above copyright |
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* notice, this list of conditions and the following disclaimer in the |
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* documentation and/or other materials provided with the distribution. |
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* |
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND |
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE |
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE |
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE |
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL |
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS |
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) |
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT |
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY |
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF |
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* SUCH DAMAGE. |
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*/ |
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#include "config.h" |
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#include "miner.h" |
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#include <stdlib.h> |
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#include <stdint.h> |
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#include <string.h> |
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#include "sph/sph_sha2.h" |
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static const uint32_t diff1targ = 0x0000ffff; |
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inline void credits_hash(void *state, const void *input) |
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{ |
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sph_sha256_context sha1, sha2; |
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uint32_t hash[8], hash2[8]; |
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sph_sha256_init(&sha1); |
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sph_sha256(&sha1, input, 168); |
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sph_sha256_close(&sha1, hash); |
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sph_sha256_init(&sha2); |
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sph_sha256(&sha2, hash, 32); |
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sph_sha256_close(&sha2, hash2); |
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memcpy(state, hash2, 32); |
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} |
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static inline void |
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be32enc_vect(uint32_t *dst, const uint32_t *src, uint32_t len) |
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{ |
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uint32_t i; |
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for (i = 0; i < len; i++) |
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dst[i] = htobe32(src[i]); |
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} |
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/* Used externally as confirmation of correct OCL code */ |
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int credits_test(unsigned char *pdata, const unsigned char *ptarget, uint32_t nonce) |
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{ |
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uint32_t tmp_hash7, Htarg = le32toh(((const uint32_t *)ptarget)[7]); |
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uint32_t data[42], ohash[8]; |
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printf("coming here credits test\n"); |
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be32enc_vect(data, (const uint32_t *)pdata, 42); |
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data[35] = htobe32(nonce); |
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credits_hash((unsigned char*)data,(unsigned char*)ohash); |
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tmp_hash7 = be32toh(ohash[7]); |
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applog(LOG_DEBUG, "htarget %08lx diff1 %08lx hash %08lx", |
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(long unsigned int)Htarg, |
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(long unsigned int)diff1targ, |
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(long unsigned int)tmp_hash7); |
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if (tmp_hash7 > diff1targ) |
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return -1; |
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if (tmp_hash7 > Htarg) |
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return 0; |
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return 1; |
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} |
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void credits_regenhash(struct work *work) |
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{ |
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uint32_t data[42]; |
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uint32_t *nonce = (uint32_t *)(work->data + 140); |
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uint32_t *ohash = (uint32_t *)(work->hash); |
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be32enc_vect(data, (const uint32_t *)work->data, 42); |
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data[35] = htobe32(*nonce); |
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credits_hash((unsigned char*)ohash, (unsigned char*)data); |
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} |
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bool scanhash_credits(struct thr_info *thr, const unsigned char __maybe_unused *pmidstate, |
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unsigned char *pdata, unsigned char __maybe_unused *phash1, |
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unsigned char __maybe_unused *phash, const unsigned char *ptarget, |
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uint32_t max_nonce, uint32_t *last_nonce, uint32_t n) |
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{ |
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uint32_t *nonce = (uint32_t *)(pdata + 140); |
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uint32_t data[42]; |
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uint32_t tmp_hash7; |
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uint32_t Htarg = le32toh(((const uint32_t *)ptarget)[7]); |
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bool ret = false; |
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be32enc_vect(data, (const uint32_t *)pdata, 35); |
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while (1) |
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{ |
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uint32_t ostate[8]; |
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*nonce = ++n; |
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data[35] = (n); |
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credits_hash(ostate, data); |
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tmp_hash7 = (ostate[7]); |
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applog(LOG_INFO, "data7 %08lx", (long unsigned int)ostate[7]); |
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if (unlikely(tmp_hash7 <= Htarg)) |
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{ |
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((uint32_t *)pdata)[35] = htobe32(n); |
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*last_nonce = n; |
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ret = true; |
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break; |
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} |
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if (unlikely((n >= max_nonce) || thr->work_restart)) |
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{ |
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*last_nonce = n; |
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break; |
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} |
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} |
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return ret; |
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} |
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@ -0,0 +1,10 @@ |
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#ifndef CREDITS_H |
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#define CREDITS_H |
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#include "miner.h" |
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extern int credits_test(unsigned char *pdata, const unsigned char *ptarget, uint32_t nonce); |
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extern void credits_regenhash(struct work *work); |
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#endif /* CREDITS_H */ |
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