mirror of
https://github.com/JayDDee/cpuminer-opt.git
synced 2025-09-17 23:44:27 +00:00
283 lines
8.8 KiB
C
283 lines
8.8 KiB
C
#include "decred-gate.h"
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#if !defined(DECRED_8WAY) && !defined(DECRED_4WAY)
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#include "sph_blake.h"
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#include <string.h>
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#include <stdint.h>
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#include <memory.h>
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#include <unistd.h>
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/*
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#ifndef min
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#define min(a,b) (a>b ? b : a)
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#endif
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#ifndef max
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#define max(a,b) (a<b ? b : a)
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#endif
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*/
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/*
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#define DECRED_NBITS_INDEX 29
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#define DECRED_NTIME_INDEX 34
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#define DECRED_NONCE_INDEX 35
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#define DECRED_XNONCE_INDEX 36
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#define DECRED_DATA_SIZE 192
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#define DECRED_WORK_COMPARE_SIZE 140
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*/
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static __thread sph_blake256_context blake_mid;
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static __thread bool ctx_midstate_done = false;
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void decred_hash(void *state, const void *input)
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{
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// #define MIDSTATE_LEN 128
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sph_blake256_context ctx __attribute__ ((aligned (64)));
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uint8_t *ending = (uint8_t*) input;
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ending += DECRED_MIDSTATE_LEN;
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if (!ctx_midstate_done) {
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sph_blake256_init(&blake_mid);
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sph_blake256(&blake_mid, input, DECRED_MIDSTATE_LEN);
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ctx_midstate_done = true;
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}
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memcpy(&ctx, &blake_mid, sizeof(blake_mid));
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sph_blake256(&ctx, ending, (180 - DECRED_MIDSTATE_LEN));
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sph_blake256_close(&ctx, state);
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}
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void decred_hash_simple(void *state, const void *input)
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{
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sph_blake256_context ctx;
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sph_blake256_init(&ctx);
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sph_blake256(&ctx, input, 180);
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sph_blake256_close(&ctx, state);
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}
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int scanhash_decred( struct work *work, uint32_t max_nonce,
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uint64_t *hashes_done, struct thr_info *mythr )
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{
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uint32_t _ALIGN(64) endiandata[48];
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uint32_t _ALIGN(64) hash32[8];
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uint32_t *pdata = work->data;
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uint32_t *ptarget = work->target;
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int thr_id = mythr->id; // thr_id arg is deprecated
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// #define DCR_NONCE_OFT32 35
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const uint32_t first_nonce = pdata[DECRED_NONCE_INDEX];
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const uint32_t HTarget = opt_benchmark ? 0x7f : ptarget[7];
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uint32_t n = first_nonce;
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ctx_midstate_done = false;
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#if 1
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memcpy(endiandata, pdata, 180);
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#else
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for (int k=0; k < (180/4); k++)
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be32enc(&endiandata[k], pdata[k]);
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#endif
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do {
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//be32enc(&endiandata[DCR_NONCE_OFT32], n);
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endiandata[DECRED_NONCE_INDEX] = n;
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decred_hash(hash32, endiandata);
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if (hash32[7] <= HTarget && fulltest(hash32, ptarget))
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{
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pdata[DECRED_NONCE_INDEX] = n;
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submit_solution( work, hash32, mythr );
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}
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n++;
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} while (n < max_nonce && !work_restart[thr_id].restart);
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*hashes_done = n - first_nonce + 1;
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pdata[DECRED_NONCE_INDEX] = n;
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return 0;
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}
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/*
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uint32_t *decred_get_nonceptr( uint32_t *work_data )
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{
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return &work_data[ DECRED_NONCE_INDEX ];
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}
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double decred_calc_network_diff( struct work* work )
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{
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// sample for diff 43.281 : 1c05ea29
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// todo: endian reversed on longpoll could be zr5 specific...
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uint32_t nbits = work->data[ DECRED_NBITS_INDEX ];
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uint32_t bits = ( nbits & 0xffffff );
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int16_t shift = ( swab32(nbits) & 0xff ); // 0x1c = 28
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int m;
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double d = (double)0x0000ffff / (double)bits;
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for ( m = shift; m < 29; m++ )
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d *= 256.0;
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for ( m = 29; m < shift; m++ )
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d /= 256.0;
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if ( shift == 28 )
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d *= 256.0; // testnet
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if ( opt_debug_diff )
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applog( LOG_DEBUG, "net diff: %f -> shift %u, bits %08x", d,
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shift, bits );
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return net_diff;
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}
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void decred_decode_extradata( struct work* work, uint64_t* net_blocks )
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{
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// some random extradata to make the work unique
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work->data[ DECRED_XNONCE_INDEX ] = (rand()*4);
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work->height = work->data[32];
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if (!have_longpoll && work->height > *net_blocks + 1)
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{
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char netinfo[64] = { 0 };
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if (net_diff > 0.)
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{
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if (net_diff != work->targetdiff)
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sprintf(netinfo, ", diff %.3f, target %.1f", net_diff,
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work->targetdiff);
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else
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sprintf(netinfo, ", diff %.3f", net_diff);
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}
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applog(LOG_BLUE, "%s block %d%s", algo_names[opt_algo], work->height,
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netinfo);
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*net_blocks = work->height - 1;
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}
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}
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void decred_be_build_stratum_request( char *req, struct work *work,
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struct stratum_ctx *sctx )
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{
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unsigned char *xnonce2str;
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uint32_t ntime, nonce;
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char ntimestr[9], noncestr[9];
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be32enc( &ntime, work->data[ DECRED_NTIME_INDEX ] );
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be32enc( &nonce, work->data[ DECRED_NONCE_INDEX ] );
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bin2hex( ntimestr, (char*)(&ntime), sizeof(uint32_t) );
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bin2hex( noncestr, (char*)(&nonce), sizeof(uint32_t) );
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xnonce2str = abin2hex( (char*)( &work->data[ DECRED_XNONCE_INDEX ] ),
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sctx->xnonce1_size );
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snprintf( req, JSON_BUF_LEN,
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"{\"method\": \"mining.submit\", \"params\": [\"%s\", \"%s\", \"%s\", \"%s\", \"%s\"], \"id\":4}",
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rpc_user, work->job_id, xnonce2str, ntimestr, noncestr );
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free(xnonce2str);
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}
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*/
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/*
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// data shared between gen_merkle_root and build_extraheader.
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__thread uint32_t decred_extraheader[32] = { 0 };
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__thread int decred_headersize = 0;
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void decred_gen_merkle_root( char* merkle_root, struct stratum_ctx* sctx )
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{
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// getwork over stratum, getwork merkle + header passed in coinb1
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memcpy(merkle_root, sctx->job.coinbase, 32);
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decred_headersize = min((int)sctx->job.coinbase_size - 32,
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sizeof(decred_extraheader) );
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memcpy( decred_extraheader, &sctx->job.coinbase[32], decred_headersize);
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}
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*/
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/*
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#define min(a,b) (a>b ? (b) :(a))
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void decred_build_extraheader( struct work* g_work, struct stratum_ctx* sctx )
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{
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uchar merkle_root[64] = { 0 };
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uint32_t extraheader[32] = { 0 };
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int headersize = 0;
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uint32_t* extradata = (uint32_t*) sctx->xnonce1;
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size_t t;
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int i;
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// getwork over stratum, getwork merkle + header passed in coinb1
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memcpy(merkle_root, sctx->job.coinbase, 32);
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headersize = min((int)sctx->job.coinbase_size - 32,
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sizeof(extraheader) );
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memcpy( extraheader, &sctx->job.coinbase[32], headersize );
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// Increment extranonce2
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for ( t = 0; t < sctx->xnonce2_size && !( ++sctx->job.xnonce2[t] ); t++ );
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// Assemble block header
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memset( g_work->data, 0, sizeof(g_work->data) );
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g_work->data[0] = le32dec( sctx->job.version );
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for ( i = 0; i < 8; i++ )
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g_work->data[1 + i] = swab32(
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le32dec( (uint32_t *) sctx->job.prevhash + i ) );
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for ( i = 0; i < 8; i++ )
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g_work->data[9 + i] = swab32( be32dec( (uint32_t *) merkle_root + i ) );
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// for ( i = 0; i < 8; i++ ) // prevhash
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// g_work->data[1 + i] = swab32( g_work->data[1 + i] );
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// for ( i = 0; i < 8; i++ ) // merkle
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// g_work->data[9 + i] = swab32( g_work->data[9 + i] );
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for ( i = 0; i < headersize/4; i++ ) // header
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g_work->data[17 + i] = extraheader[i];
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// extradata
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for ( i = 0; i < sctx->xnonce1_size/4; i++ )
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g_work->data[ DECRED_XNONCE_INDEX + i ] = extradata[i];
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for ( i = DECRED_XNONCE_INDEX + sctx->xnonce1_size/4; i < 45; i++ )
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g_work->data[i] = 0;
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g_work->data[37] = (rand()*4) << 8;
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// block header suffix from coinb2 (stake version)
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memcpy( &g_work->data[44],
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&sctx->job.coinbase[ sctx->job.coinbase_size-4 ], 4 );
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sctx->bloc_height = g_work->data[32];
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//applog_hex(work->data, 180);
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//applog_hex(&work->data[36], 36);
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}
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#undef min
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bool decred_ready_to_mine( struct work* work, struct stratum_ctx* stratum,
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int thr_id )
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{
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if ( have_stratum && strcmp(stratum->job.job_id, work->job_id) )
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// need to regen g_work..
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return false;
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if ( have_stratum && !work->data[0] && !opt_benchmark )
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{
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sleep(1);
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return false;
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}
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// extradata: prevent duplicates
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work->data[ DECRED_XNONCE_INDEX ] += 1;
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work->data[ DECRED_XNONCE_INDEX + 1 ] |= thr_id;
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return true;
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}
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bool register_decred_algo( algo_gate_t* gate )
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{
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gate->optimizations = SSE2_OPT;
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gate->scanhash = (void*)&scanhash_decred;
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gate->hash = (void*)&decred_hash;
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gate->get_nonceptr = (void*)&decred_get_nonceptr;
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gate->decode_extra_data = (void*)&decred_decode_extradata;
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gate->build_stratum_request = (void*)&decred_be_build_stratum_request;
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gate->work_decode = (void*)&std_be_work_decode;
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gate->submit_getwork_result = (void*)&std_be_submit_getwork_result;
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gate->build_extraheader = (void*)&decred_build_extraheader;
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gate->ready_to_mine = (void*)&decred_ready_to_mine;
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gate->nbits_index = DECRED_NBITS_INDEX;
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gate->ntime_index = DECRED_NTIME_INDEX;
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gate->nonce_index = DECRED_NONCE_INDEX;
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gate->work_data_size = DECRED_DATA_SIZE;
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gate->work_cmp_size = DECRED_WORK_COMPARE_SIZE;
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allow_mininginfo = false;
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have_gbt = false;
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return true;
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}
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*/
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#endif
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