121 lines
4.5 KiB
Go
121 lines
4.5 KiB
Go
/*
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Copyright (c) 2019 DERO Foundation. All rights reserved.
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Redistribution and use in source and binary forms, with or without modification,
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are permitted provided that the following conditions are met:
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1. Redistributions of source code must retain the above copyright notice,
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this list of conditions and the following disclaimer.
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2. Redistributions in binary form must reproduce the above copyright notice,
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this list of conditions and the following disclaimer in the documentation
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and/or other materials provided with the distribution.
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3. Neither the name of the copyright holder nor the names of its contributors
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may be used to endorse or promote products derived from this software without
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specific prior written permission.
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THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
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LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
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USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package randomx
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import (
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"git.gammaspectra.live/P2Pool/go-randomx/v3/internal/argon2"
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"git.gammaspectra.live/P2Pool/go-randomx/v3/internal/memory"
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)
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// see reference configuration.h
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// Cache size in KiB. Must be a power of 2.
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const RANDOMX_ARGON_MEMORY = 262144
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// Number of Argon2d iterations for Cache initialization.
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const RANDOMX_ARGON_ITERATIONS = 3
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// Number of parallel lanes for Cache initialization.
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const RANDOMX_ARGON_LANES = 1
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// Argon2d salt
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const RANDOMX_ARGON_SALT = "RandomX\x03"
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const ArgonSaltSize uint32 = 8 //sizeof("" RANDOMX_ARGON_SALT) - 1
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// Number of random Cache accesses per Dataset item. Minimum is 2.
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const RANDOMX_CACHE_ACCESSES = 8
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// Target latency for SuperscalarHash (in cycles of the reference CPU).
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const RANDOMX_SUPERSCALAR_LATENCY = 170
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// Dataset base size in bytes. Must be a power of 2.
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const RANDOMX_DATASET_BASE_SIZE = 2147483648
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// Dataset extra size. Must be divisible by 64.
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const RANDOMX_DATASET_EXTRA_SIZE = 33554368
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// Number of instructions in a RandomX program. Must be divisible by 8.
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const RANDOMX_PROGRAM_SIZE = 256
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// Number of iterations during VM execution.
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const RANDOMX_PROGRAM_ITERATIONS = 2048
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// Number of chained VM executions per hash.
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const RANDOMX_PROGRAM_COUNT = 8
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// Scratchpad L3 size in bytes. Must be a power of 2.
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const RANDOMX_SCRATCHPAD_L3 = 2097152
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// Scratchpad L2 size in bytes. Must be a power of two and less than or equal to RANDOMX_SCRATCHPAD_L3.
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const RANDOMX_SCRATCHPAD_L2 = 262144
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// Scratchpad L1 size in bytes. Must be a power of two (minimum 64) and less than or equal to RANDOMX_SCRATCHPAD_L2.
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const RANDOMX_SCRATCHPAD_L1 = 16384
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// Jump condition mask size in bits.
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const RANDOMX_JUMP_BITS = 8
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// Jump condition mask offset in bits. The sum of RANDOMX_JUMP_BITS and RANDOMX_JUMP_OFFSET must not exceed 16.
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const RANDOMX_JUMP_OFFSET = 8
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const RANDOMX_HASH_SIZE = 32
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const DatasetExtraItems = RANDOMX_DATASET_EXTRA_SIZE / RANDOMX_DATASET_ITEM_SIZE
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const SuperscalarMaxSize = 3*RANDOMX_SUPERSCALAR_LATENCY + 2
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const RANDOMX_DATASET_ITEM_SIZE uint64 = 64
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const CacheLineSize uint64 = RANDOMX_DATASET_ITEM_SIZE
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const ScratchpadSize uint32 = RANDOMX_SCRATCHPAD_L3
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const CacheLineAlignMask = (RANDOMX_DATASET_BASE_SIZE - 1) & (^(CacheLineSize - 1))
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const CacheSize uint64 = RANDOMX_ARGON_MEMORY * uint64(argon2.BlockSize)
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const ScratchpadL1 = RANDOMX_SCRATCHPAD_L1 / 8
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const ScratchpadL2 = RANDOMX_SCRATCHPAD_L2 / 8
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const ScratchpadL3 = RANDOMX_SCRATCHPAD_L3 / 8
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const ScratchpadL1Mask = (ScratchpadL1 - 1) * 8
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const ScratchpadL2Mask = (ScratchpadL2 - 1) * 8
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const ScratchpadL1Mask16 = (ScratchpadL1/2 - 1) * 16
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const ScratchpadL2Mask16 = (ScratchpadL2/2 - 1) * 16
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const ScratchpadL3Mask = (ScratchpadL3 - 1) * 8
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const ScratchpadL3Mask64 = (ScratchpadL3/8 - 1) * 64
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const CONDITIONOFFSET = RANDOMX_JUMP_OFFSET
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const CONDITIONMASK = (1 << RANDOMX_JUMP_BITS) - 1
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const STOREL3CONDITION = 14
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func isZeroOrPowerOf2(x uint32) bool {
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return (x & (x - 1)) == 0
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}
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var largePageAllocator = memory.NewLargePageAllocator()
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var pageAllocator = memory.NewPageAllocator()
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var cacheLineAlignedAllocator = memory.NewAlignedAllocator(CacheLineSize)
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