mirror of
https://github.com/JayDDee/cpuminer-opt.git
synced 2025-09-17 23:44:27 +00:00
103 lines
3.3 KiB
C
103 lines
3.3 KiB
C
#include "sha256t-gate.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/sha/sph_sha2.h"
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#include "sha256-hash.h"
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#if defined(__SHA__)
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// Only used on CPUs with SHA
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int scanhash_sha256t( 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 block0[16] __attribute__ ((aligned (64)));
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uint32_t block1[16] __attribute__ ((aligned (64)));
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uint32_t hash0[8] __attribute__ ((aligned (32)));
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uint32_t hash1[8] __attribute__ ((aligned (32)));
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uint32_t initstate[8] __attribute__ ((aligned (32)));
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uint32_t midstate[8] __attribute__ ((aligned (32)));
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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 first_nonce = pdata[19];
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const uint32_t last_nonce = max_nonce - 1;
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uint32_t n = first_nonce;
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const int thr_id = mythr->id;
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const bool bench = opt_benchmark;
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__m128i shuf_bswap32 =
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_mm_set_epi64x( 0x0c0d0e0f08090a0bULL, 0x0405060700010203ULL );
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// initialize state
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initstate[0] = 0x6A09E667;
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initstate[1] = 0xBB67AE85;
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initstate[2] = 0x3C6EF372;
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initstate[3] = 0xA54FF53A;
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initstate[4] = 0x510E527F;
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initstate[5] = 0x9B05688C;
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initstate[6] = 0x1F83D9AB;
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initstate[7] = 0x5BE0CD19;
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// hash first 64 bytes of data
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sha256_opt_transform_le( midstate, pdata, initstate );
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do
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{
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// 1. final 16 bytes of data, with padding
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memcpy( block0, pdata + 16, 16 );
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memcpy( block1, pdata + 16, 16 );
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block0[ 3] = n;
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block1[ 3] = n+1;
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block0[ 4] = block1[ 4] = 0x80000000;
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memset( block0 + 5, 0, 40 );
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memset( block1 + 5, 0, 40 );
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block0[15] = block1[15] = 80*8; // bit count
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sha256_ni2way_transform_le( hash0, hash1, block0, block1, midstate, midstate );
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// 2. 32 byte hash from 1.
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memcpy( block0, hash0, 32 );
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memcpy( block1, hash1, 32 );
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block0[ 8] = block1[ 8] = 0x80000000;
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memset( block0 + 9, 0, 24 );
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memset( block1 + 9, 0, 24 );
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block0[15] = block1[15] = 32*8; // bit count
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sha256_ni2way_transform_le( hash0, hash1, block0, block1, initstate, initstate );
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// 3. 32 byte hash from 2.
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memcpy( block0, hash0, 32 );
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memcpy( block1, hash1, 32 );
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sha256_ni2way_transform_le( hash0, hash1, block0, block1, initstate, initstate );
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// byte swap final hash for testing
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casti_m128i( hash0, 0 ) =
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_mm_shuffle_epi8( casti_m128i( hash0, 0 ), shuf_bswap32 );
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casti_m128i( hash0, 1 ) =
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_mm_shuffle_epi8( casti_m128i( hash0, 1 ), shuf_bswap32 );
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casti_m128i( hash1, 0 ) =
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_mm_shuffle_epi8( casti_m128i( hash1, 0 ), shuf_bswap32 );
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casti_m128i( hash1, 1 ) =
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_mm_shuffle_epi8( casti_m128i( hash1, 1 ), shuf_bswap32 );
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if ( unlikely( valid_hash( hash0, ptarget ) && !bench ) )
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{
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pdata[19] = n;
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submit_solution( work, hash0, mythr );
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}
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if ( unlikely( valid_hash( hash1, ptarget ) && !bench ) )
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{
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pdata[19] = n+1;
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submit_solution( work, hash1, mythr );
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}
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n += 2;
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} while ( (n < last_nonce) && !work_restart[thr_id].restart );
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pdata[19] = n;
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*hashes_done = n - first_nonce;
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return 0;
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}
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#endif
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