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#include "uint256.h"
#include "sph/sph_fugue.h"
#include "cpuminer-config.h"
#include "miner.h"
#include <string.h>
#include <stdint.h>
#include <cuda_fugue256.h>
extern "C" void my_fugue256_init(void *cc);
extern "C" void my_fugue256(void *cc, const void *data, size_t len);
extern "C" void my_fugue256_close(void *cc, void *dst);
extern "C" void my_fugue256_addbits_and_close(void *cc, unsigned ub, unsigned n, void *dst);
// vorbereitete Kontexte nach den ersten 80 Bytes
sph_fugue256_context ctx_fugue_const[8];
#define SWAP32(x) \
((((x) << 24) & 0xff000000u) | (((x) << 8) & 0x00ff0000u) | \
(((x) >> 8) & 0x0000ff00u) | (((x) >> 24) & 0x000000ffu))
extern "C" int scanhash_fugue256(int thr_id, uint32_t *pdata, const uint32_t *ptarget,
uint32_t max_nonce, unsigned long *hashes_done)
{
uint32_t start_nonce = pdata[19]++;
const uint32_t Htarg = ptarget[7];
const uint32_t throughPut = 4096 * 128;
// init
static bool init[8] = { false, false, false, false, false, false, false, false };
if(!init[thr_id])
{
fugue256_cpu_init(thr_id, throughPut);
init[thr_id] = true;
}
// Endian Drehung ist notwendig
uint32_t endiandata[20];
for (int kk=0; kk < 20; kk++)
be32enc(&endiandata[kk], pdata[kk]);
// Context mit dem Endian gedrehten Blockheader vorbereiten (Nonce wird später ersetzt)
fugue256_cpu_setBlock(thr_id, endiandata, (void*)ptarget);
do {
// GPU
uint32_t foundNounce = 0xFFFFFFFF;
fugue256_cpu_hash(thr_id, throughPut, pdata[19], NULL, &foundNounce);
if(foundNounce < 0xffffffff)
{
uint32_t hash[8];
endiandata[19] = SWAP32(foundNounce);
sph_fugue256_context ctx_fugue;
sph_fugue256_init(&ctx_fugue);
sph_fugue256 (&ctx_fugue, endiandata, 80);
sph_fugue256_close(&ctx_fugue, &hash);
if (hash[7] <= Htarg && fulltest(hash, ptarget))
{
pdata[19] = foundNounce;
*hashes_done = foundNounce - start_nonce;
return 1;
} else {
applog(LOG_INFO, "GPU #%d: result for nonce $%08X does not validate on CPU!", thr_id, foundNounce);
}
}
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;
return 0;
}
void fugue256_hash(unsigned char* output, const unsigned char* input, int len)
{
sph_fugue256_context ctx;
sph_fugue256_init(&ctx);
sph_fugue256(&ctx, input, len);
sph_fugue256_close(&ctx, (void *)output);
}