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https://github.com/JayDDee/cpuminer-opt.git
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v3.5.2
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Jay D Dee
292
algo/timetravel.c
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292
algo/timetravel.c
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#include <miner.h>
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#include "algo-gate-api.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 <stdio.h>
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#include "algo/blake/sph_blake.h"
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#include "algo/bmw/sph_bmw.h"
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#include "algo/jh/sph_jh.h"
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#include "algo/keccak/sph_keccak.h"
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#include "algo/skein/sph_skein.h"
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#include "algo/luffa/sph_luffa.h"
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#include "algo/luffa/sse2/luffa_for_sse2.h"
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#include "algo/cubehash/sse2/cubehash_sse2.h"
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#ifdef NO_AES_NI
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#include "algo/groestl/sph_groestl.h"
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#else
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#include "algo/groestl/aes_ni/hash-groestl.h"
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#endif
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// Machinecoin Genesis Timestamp
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#define HASH_FUNC_BASE_TIMESTAMP 1389040865
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#define HASH_FUNC_COUNT 8
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#define HASH_FUNC_COUNT_PERMUTATIONS 40320
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//static int permutation[HASH_FUNC_COUNT] = { 0 };
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static __thread uint32_t s_ntime = UINT32_MAX;
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static __thread int permutation[HASH_FUNC_COUNT] = { 0 };
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inline void reverse( int *pbegin, int *pend )
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{
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while ( (pbegin != pend) && (pbegin != --pend) )
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{
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swap_vars( *pbegin, *pend );
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pbegin++;
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}
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}
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static void next_permutation( int *pbegin, int *pend )
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{
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if ( pbegin == pend )
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return;
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int *i = pbegin;
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++i;
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if ( i == pend )
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return;
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i = pend;
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--i;
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while (1)
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{
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int *j = i;
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--i;
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if ( *i < *j )
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{
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int *k = pend;
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while ( !(*i < *--k) ) /* do nothing */ ;
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swap_vars( *i, *k );
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reverse(j, pend);
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return; // true
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}
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if ( i == pbegin )
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{
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reverse(pbegin, pend);
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return; // false
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}
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// else?
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}
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}
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typedef struct {
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sph_blake512_context blake;
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sph_bmw512_context bmw;
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sph_skein512_context skein;
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sph_jh512_context jh;
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sph_keccak512_context keccak;
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sph_luffa512_context luffa;
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// hashState_luffa luffa;
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cubehashParam cube;
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// ctx optimization doesn't work for groestl, do it the old way
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//#ifdef NO_AES_NI
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// sph_groestl512_context groestl;
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//#else
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// hashState_groestl groestl;
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//#endif
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} tt_ctx_holder;
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tt_ctx_holder tt_ctx;
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void init_tt_ctx()
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{
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sph_blake512_init( &tt_ctx.blake );
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sph_bmw512_init( &tt_ctx.bmw );
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sph_skein512_init( &tt_ctx.skein );
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sph_jh512_init( &tt_ctx.jh );
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sph_keccak512_init( &tt_ctx.keccak );
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sph_luffa512_init( &tt_ctx.luffa );
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// init_luffa( &tt_ctx.luffa, 512 );
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cubehashInit( &tt_ctx.cube, 512, 16, 32 );
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//#ifdef NO_AES_NI
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// sph_groestl512_init( &tt_ctx.groestl );
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//#else
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// init_groestl( &tt_ctx.groestl );
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//#endif
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};
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void timetravel_hash(void *output, const void *input)
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{
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uint32_t _ALIGN(64) hash[128]; // 16 bytes * HASH_FUNC_COUNT
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uint32_t *hashA, *hashB;
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uint32_t dataLen = 64;
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uint32_t *work_data = (uint32_t *)input;
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const uint32_t timestamp = work_data[17];
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tt_ctx_holder ctx;
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memcpy( &ctx, &tt_ctx, sizeof(tt_ctx) );
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int i;
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// workaround for initializing groestl ctx
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#ifdef NO_AES_NI
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sph_groestl512_context ctx_groestl;
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#else
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hashState_groestl ctx_groestl;
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#endif
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for ( i = 0; i < HASH_FUNC_COUNT; i++ )
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{
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if (i == 0)
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{
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dataLen = 80;
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hashA = work_data;
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}
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else
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{
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dataLen = 64;
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hashA = &hash[16 * (i - 1)];
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}
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hashB = &hash[16 * i];
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switch ( permutation[i] )
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{
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case 0:
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// sph_blake512_init( &ctx.blake );
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sph_blake512( &ctx.blake, hashA, dataLen );
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sph_blake512_close( &ctx.blake, hashB );
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break;
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case 1:
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// sph_bmw512_init( &ctx.bmw );
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sph_bmw512( &ctx.bmw, hashA, dataLen );
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sph_bmw512_close( &ctx.bmw, hashB );
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break;
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case 2:
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#ifdef NO_AES_NI
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sph_groestl512_init( &ctx_groestl );
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sph_groestl512( &ctx_groestl, hashA, dataLen );
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sph_groestl512_close( &ctx_groestl, hashB );
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#else
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init_groestl( &ctx_groestl );
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update_groestl( &ctx_groestl, (char*)hashA, dataLen*8 );
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final_groestl( &ctx_groestl, (char*)hashB );
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#endif
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break;
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case 3:
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// sph_skein512_init( &ctx.skein );
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sph_skein512( &ctx.skein, hashA, dataLen );
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sph_skein512_close( &ctx.skein, hashB );
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break;
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case 4:
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// sph_jh512_init( &ctx.jh );
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sph_jh512( &ctx.jh, hashA, dataLen );
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sph_jh512_close( &ctx.jh, hashB);
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break;
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case 5:
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// sph_keccak512_init( &ctx.keccak );
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sph_keccak512( &ctx.keccak, hashA, dataLen );
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sph_keccak512_close( &ctx.keccak, hashB );
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break;
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case 6:
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// sph_luffa512_init( &ctx.luffa );
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sph_luffa512 ( &ctx.luffa, hashA, dataLen );
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sph_luffa512_close( &ctx.luffa, hashB );
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// init_luffa( &ctx.luffa, 512 );
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// update_luffa( &ctx.luffa, (const BitSequence*)hashA, dataLen*8 );
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// final_luffa( &ctx.luffa, (BitSequence*)hashB );
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break;
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case 7:
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// cubehashInit( &ctx.cube, 512, 16, 32 );
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cubehashUpdate( &ctx.cube, (const byte*) hashA, dataLen );
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cubehashDigest( &ctx.cube, (byte*)hashB );
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break;
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default:
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break;
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}
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}
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memcpy(output, &hash[16 * (HASH_FUNC_COUNT - 1)], 32);
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}
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int scanhash_timetravel( int thr_id, struct work *work, uint32_t max_nonce,
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uint64_t *hashes_done )
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{
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uint32_t _ALIGN(64) hash[8];
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uint32_t _ALIGN(64) endiandata[20];
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uint32_t *pdata = work->data;
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uint32_t *ptarget = work->target;
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const uint32_t Htarg = ptarget[7];
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const uint32_t first_nonce = pdata[19];
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uint32_t nonce = first_nonce;
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volatile uint8_t *restart = &(work_restart[thr_id].restart);
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int i;
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if (opt_benchmark)
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ptarget[7] = 0x0cff;
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for (int k=0; k < 19; k++)
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be32enc(&endiandata[k], pdata[k]);
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const uint32_t timestamp = endiandata[17];
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if ( timestamp != s_ntime )
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{
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const int steps = ( timestamp - HASH_FUNC_BASE_TIMESTAMP )
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% HASH_FUNC_COUNT_PERMUTATIONS;
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for ( i = 0; i < HASH_FUNC_COUNT; i++ )
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permutation[i] = i;
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for ( i = 0; i < steps; i++ )
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next_permutation( permutation, permutation + HASH_FUNC_COUNT );
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s_ntime = timestamp;
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}
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do {
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be32enc(&endiandata[19], nonce);
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timetravel_hash(hash, endiandata);
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if (hash[7] <= Htarg && fulltest(hash, ptarget)) {
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work_set_target_ratio(work, hash);
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pdata[19] = nonce;
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*hashes_done = pdata[19] - first_nonce;
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return 1;
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}
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nonce++;
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} while (nonce < max_nonce && !(*restart));
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pdata[19] = nonce;
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*hashes_done = pdata[19] - first_nonce + 1;
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return 0;
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}
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void timetravel_set_target( struct work* work, double job_diff )
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{
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work_set_target( work, job_diff / (256.0 * opt_diff_factor) );
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}
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// set_data_endian is a reasonable gate to use, it's called upon receipt
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// of new work (new ntime) and has the right arg to access it.
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void timetravel_calc_perm( struct work *work )
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{
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// We want to permute algorithms. To get started we
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// initialize an array with a sorted sequence of unique
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// integers where every integer represents its own algorithm.
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int ntime, steps, i;
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be32enc( &ntime, work->data[ STD_NTIME_INDEX ] );
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steps = ( ntime - HASH_FUNC_BASE_TIMESTAMP )
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% HASH_FUNC_COUNT_PERMUTATIONS;
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for ( i = 0; i < HASH_FUNC_COUNT; i++ )
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permutation[i] = i;
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for ( i = 0; i < steps; i++ )
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next_permutation( permutation, permutation + HASH_FUNC_COUNT );
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}
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bool register_timetravel_algo( algo_gate_t* gate )
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{
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gate->optimizations = SSE2_OPT | AES_OPT | AVX_OPT | AVX2_OPT;
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init_tt_ctx();
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gate->scanhash = (void*)&scanhash_timetravel;
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gate->hash = (void*)&timetravel_hash;
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gate->set_target = (void*)&timetravel_set_target;
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gate->get_max64 = (void*)&get_max64_0xffffLL;
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// gate->set_work_data_endian = (void*)&timetravel_calc_perm;
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return true;
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};
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