int scanhash_sha256d(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, unsigned long *hashes_done)
{
uint32_t data[64] __attribute__((aligned(128)));
uint32_t hash[8] __attribute__((aligned(32)));
uint32_t midstate[8] __attribute__((aligned(32)));
uint32_t prehash[8] __attribute__((aligned(32)));
uint32_t n = pdata[19] - 1;
const uint32_t first_nonce = pdata[19];
const uint32_t Htarg = ptarget[7];
#ifdef HAVE_SHA256_16WAY
if (sha256_use_16way())
return scanhash_sha256d_16way(thr_id, pdata, ptarget,
max_nonce, hashes_done);
#endif
#ifdef HAVE_SHA256_8WAY
if (sha256_use_8way())
return scanhash_sha256d_8way(thr_id, pdata, ptarget,
max_nonce, hashes_done);
#endif
#ifdef HAVE_SHA256_4WAY
if (sha256_use_4way())
return scanhash_sha256d_4way(thr_id, pdata, ptarget,
max_nonce, hashes_done);
#endif
memcpy(data, pdata + 16, 64);
sha256d_preextend(data);
sha256_init(midstate);
sha256_transform(midstate, pdata, 0);
memcpy(prehash, midstate, 32);
sha256d_prehash(prehash, pdata + 16);
do {
data[3] = ++n;
sha256d_ms(hash, data, midstate, prehash);
if (swab32(hash[7]) <= Htarg) {
pdata[19] = data[3];
sha256d_80_swap(hash, pdata);
if (fulltest(hash, ptarget)) {
*hashes_done = n - first_nonce + 1;
return 1;
}
}
} while (n < max_nonce && !work_restart[thr_id].restart);
*hashes_done = n - first_nonce + 1;
pdata[19] = n;
return 0;
}
int scanhash_sha256d(int thr_id, struct work *work,
uint32_t max_nonce, uint64_t *hashes_done)
{
uint32_t *pdata = work->data;
uint32_t *ptarget = work->target;
uint32_t _ALIGN(128) data[64];
uint32_t _ALIGN(32) hash[8];
uint32_t _ALIGN(32) midstate[8];
uint32_t _ALIGN(32) prehash[8];
uint32_t n = pdata[19] - 1;
const uint32_t first_nonce = pdata[19];
const uint32_t Htarg = ptarget[7];
#ifdef HAVE_SHA256_8WAY
if (sha256_use_8way())
return scanhash_sha256d_8way(thr_id, work,
max_nonce, hashes_done);
#endif
#ifdef HAVE_SHA256_4WAY
if (sha256_use_4way())
return scanhash_sha256d_4way(thr_id, work,
max_nonce, hashes_done);
#endif
memcpy(data, pdata + 16, 64);
sha256d_preextend(data);
sha256_init(midstate);
sha256_transform(midstate, pdata, 0);
memcpy(prehash, midstate, 32);
sha256d_prehash(prehash, pdata + 16);
do {
data[3] = ++n;
sha256d_ms(hash, data, midstate, prehash);
if (unlikely(swab32(hash[7]) <= Htarg)) {
pdata[19] = data[3];
sha256d_80_swap(hash, pdata);
if (fulltest(hash, ptarget)) {
*hashes_done = n - first_nonce + 1;
return 1;
}
}
} while (likely(n < max_nonce && !work_restart[thr_id].restart));
*hashes_done = n - first_nonce + 1;
pdata[19] = n;
return 0;
}