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132 lines
3.6 KiB
132 lines
3.6 KiB
/* |
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* SHA-256 driver for ASM routine for x86_64 on Linux |
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* Copyright (c) Mark Crichton <crichton@gimp.org> |
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* |
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* This program is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License as published by the Free |
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* Software Foundation; either version 2 of the License, or (at your option) |
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* any later version. |
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* |
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*/ |
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#include "driver-cpu.h" |
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#ifdef WANT_X8664_SSE4 |
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#include <string.h> |
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#include <assert.h> |
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#include <xmmintrin.h> |
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#include <stdint.h> |
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#include <stdio.h> |
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extern void CalcSha256_x64_sse4(__m128i *res, __m128i *data, uint32_t init[8]); |
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static uint32_t g_sha256_k[] = { |
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0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, /* 0 */ |
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0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, |
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0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, /* 8 */ |
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0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, |
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0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, /* 16 */ |
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0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, |
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0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, /* 24 */ |
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0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, |
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0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, /* 32 */ |
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0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, |
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0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, /* 40 */ |
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0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, |
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0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, /* 48 */ |
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0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, |
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0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, /* 56 */ |
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0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2 |
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}; |
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static uint32_t g_sha256_hinit[8] = |
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{0x6a09e667, 0xbb67ae85, 0x3c6ef372, 0xa54ff53a, 0x510e527f, 0x9b05688c, 0x1f83d9ab, 0x5be0cd19}; |
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__m128i g_4sha256_k[64]; |
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bool scanhash_sse4_64(struct thr_info*thr, const unsigned char *pmidstate, |
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unsigned char *pdata, |
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unsigned char *phash1, unsigned char *phash, |
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const unsigned char *ptarget, |
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uint32_t max_nonce, uint32_t *last_nonce, |
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uint32_t nonce) |
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{ |
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uint32_t *nNonce_p = (uint32_t *)(pdata + 76); |
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uint32_t m_midstate[8], m_w[16], m_w1[16]; |
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__m128i m_4w[64], m_4hash[64], m_4hash1[64]; |
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__m128i offset; |
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int i; |
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pdata += 64; |
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/* For debugging */ |
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union { |
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__m128i m; |
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uint32_t i[4]; |
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} mi; |
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/* Message expansion */ |
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memcpy(m_midstate, pmidstate, sizeof(m_midstate)); |
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memcpy(m_w, pdata, sizeof(m_w)); /* The 2nd half of the data */ |
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memcpy(m_w1, phash1, sizeof(m_w1)); |
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memset(m_4hash, 0, sizeof(m_4hash)); |
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/* Transmongrify */ |
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for (i = 0; i < 16; i++) |
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m_4w[i] = _mm_set1_epi32(m_w[i]); |
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for (i = 0; i < 16; i++) |
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m_4hash1[i] = _mm_set1_epi32(m_w1[i]); |
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for (i = 0; i < 64; i++) |
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g_4sha256_k[i] = _mm_set1_epi32(g_sha256_k[i]); |
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offset = _mm_set_epi32(0x3, 0x2, 0x1, 0x0); |
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for (;;) |
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{ |
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int j; |
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m_4w[3] = _mm_add_epi32(offset, _mm_set1_epi32(nonce)); |
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/* Some optimization can be done here W.R.T. precalculating some hash */ |
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CalcSha256_x64_sse4(m_4hash1, m_4w, m_midstate); |
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CalcSha256_x64_sse4(m_4hash, m_4hash1, g_sha256_hinit); |
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for (j = 0; j < 4; j++) { |
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mi.m = m_4hash[7]; |
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if (unlikely(mi.i[j] == 0)) |
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break; |
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} |
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/* If j = true, we found a hit...so check it */ |
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/* Use the C version for a check... */ |
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if (unlikely(j != 4)) { |
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for (i = 0; i < 8; i++) { |
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mi.m = m_4hash[i]; |
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*(uint32_t *)&(phash)[i*4] = mi.i[j]; |
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} |
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if (fulltest(phash, ptarget)) { |
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nonce += j; |
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*last_nonce = nonce; |
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*nNonce_p = nonce; |
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return true; |
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} |
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} |
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if (unlikely((nonce >= max_nonce) || thr->work_restart)) |
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{ |
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*last_nonce = nonce; |
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return false; |
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} |
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nonce += 4; |
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} |
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} |
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#endif /* WANT_X8664_SSE4 */ |
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