diff options
Diffstat (limited to 'vendor/github.com/minio/md5-simd/block_amd64.go')
| -rw-r--r-- | vendor/github.com/minio/md5-simd/block_amd64.go | 199 |
1 files changed, 0 insertions, 199 deletions
diff --git a/vendor/github.com/minio/md5-simd/block_amd64.go b/vendor/github.com/minio/md5-simd/block_amd64.go deleted file mode 100644 index 27d6ce00e..000000000 --- a/vendor/github.com/minio/md5-simd/block_amd64.go +++ /dev/null @@ -1,199 +0,0 @@ -//+build !noasm,!appengine,gc - -// Copyright (c) 2020 MinIO Inc. All rights reserved. -// Use of this source code is governed by a license that can be -// found in the LICENSE file. - -package md5simd - -import ( - "fmt" - "math" - "sync" - "unsafe" - - "github.com/klauspost/cpuid" -) - -var hasAVX512 bool - -//go:noescape -func block8(state *uint32, base uintptr, bufs *int32, cache *byte, n int) - -//go:noescape -func block16(state *uint32, base uintptr, ptrs *int32, mask uint64, n int) - -// 8-way 4x uint32 digests in 4 ymm registers -// (ymm0, ymm1, ymm2, ymm3) -type digest8 struct { - v0, v1, v2, v3 [8]uint32 -} - -// Stack cache for 8x64 byte md5.BlockSize bytes. -// Must be 32-byte aligned, so allocate 512+32 and -// align upwards at runtime. -type cache8 [512 + 32]byte - -// MD5 magic numbers for one lane of hashing; inflated -// 8x below at init time. -var md5consts = [64]uint32{ - 0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee, - 0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501, - 0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be, - 0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821, - 0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa, - 0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8, - 0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed, - 0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a, - 0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c, - 0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70, - 0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05, - 0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665, - 0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039, - 0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1, - 0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1, - 0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391, -} - -// inflate the consts 8-way for 8x md5 (256 bit ymm registers) -var avx256md5consts = func(c []uint32) []uint32 { - inf := make([]uint32, 8*len(c)) - for i := range c { - for j := 0; j < 8; j++ { - inf[(i*8)+j] = c[i] - } - } - return inf -}(md5consts[:]) - -// 16-way 4x uint32 digests in 4 zmm registers -type digest16 struct { - v0, v1, v2, v3 [16]uint32 -} - -// inflate the consts 16-way for 16x md5 (512 bit zmm registers) -var avx512md5consts = func(c []uint32) []uint32 { - inf := make([]uint32, 16*len(c)) - for i := range c { - for j := 0; j < 16; j++ { - inf[(i*16)+j] = c[i] - } - } - return inf -}(md5consts[:]) - -func init() { - hasAVX512 = cpuid.CPU.AVX512F() -} - -// Interface function to assembly code -func (s *md5Server) blockMd5_x16(d *digest16, input [16][]byte, half bool) { - if hasAVX512 { - blockMd5_avx512(d, input, s.allBufs, &s.maskRounds16) - } else { - d8a, d8b := digest8{}, digest8{} - for i := range d8a.v0 { - j := i + 8 - d8a.v0[i], d8a.v1[i], d8a.v2[i], d8a.v3[i] = d.v0[i], d.v1[i], d.v2[i], d.v3[i] - if !half { - d8b.v0[i], d8b.v1[i], d8b.v2[i], d8b.v3[i] = d.v0[j], d.v1[j], d.v2[j], d.v3[j] - } - } - - i8 := [2][8][]byte{} - for i := range i8[0] { - i8[0][i], i8[1][i] = input[i], input[8+i] - } - if half { - blockMd5_avx2(&d8a, i8[0], s.allBufs, &s.maskRounds8a) - } else { - wg := sync.WaitGroup{} - wg.Add(2) - go func() { blockMd5_avx2(&d8a, i8[0], s.allBufs, &s.maskRounds8a); wg.Done() }() - go func() { blockMd5_avx2(&d8b, i8[1], s.allBufs, &s.maskRounds8b); wg.Done() }() - wg.Wait() - } - - for i := range d8a.v0 { - j := i + 8 - d.v0[i], d.v1[i], d.v2[i], d.v3[i] = d8a.v0[i], d8a.v1[i], d8a.v2[i], d8a.v3[i] - if !half { - d.v0[j], d.v1[j], d.v2[j], d.v3[j] = d8b.v0[i], d8b.v1[i], d8b.v2[i], d8b.v3[i] - } - } - } -} - -// Interface function to AVX512 assembly code -func blockMd5_avx512(s *digest16, input [16][]byte, base []byte, maskRounds *[16]maskRounds) { - baseMin := uint64(uintptr(unsafe.Pointer(&(base[0])))) - ptrs := [16]int32{} - - for i := range ptrs { - if len(input[i]) > 0 { - if len(input[i]) > internalBlockSize { - panic(fmt.Sprintf("Sanity check fails for lane %d: maximum input length cannot exceed internalBlockSize", i)) - } - - off := uint64(uintptr(unsafe.Pointer(&(input[i][0])))) - baseMin - if off > math.MaxUint32 { - panic(fmt.Sprintf("invalid buffer sent with offset %x", off)) - } - ptrs[i] = int32(off) - } - } - - sdup := *s // create copy of initial states to receive intermediate updates - - rounds := generateMaskAndRounds16(input, maskRounds) - - for r := 0; r < rounds; r++ { - m := maskRounds[r] - - block16(&sdup.v0[0], uintptr(baseMin), &ptrs[0], m.mask, int(64*m.rounds)) - - for j := 0; j < len(ptrs); j++ { - ptrs[j] += int32(64 * m.rounds) // update pointers for next round - if m.mask&(1<<j) != 0 { // update digest if still masked as active - (*s).v0[j], (*s).v1[j], (*s).v2[j], (*s).v3[j] = sdup.v0[j], sdup.v1[j], sdup.v2[j], sdup.v3[j] - } - } - } -} - -// Interface function to AVX2 assembly code -func blockMd5_avx2(s *digest8, input [8][]byte, base []byte, maskRounds *[8]maskRounds) { - baseMin := uint64(uintptr(unsafe.Pointer(&(base[0])))) - 4 - ptrs := [8]int32{} - - for i := range ptrs { - if len(input[i]) > 0 { - if len(input[i]) > internalBlockSize { - panic(fmt.Sprintf("Sanity check fails for lane %d: maximum input length cannot exceed internalBlockSize", i)) - } - - off := uint64(uintptr(unsafe.Pointer(&(input[i][0])))) - baseMin - if off > math.MaxUint32 { - panic(fmt.Sprintf("invalid buffer sent with offset %x", off)) - } - ptrs[i] = int32(off) - } - } - - sdup := *s // create copy of initial states to receive intermediate updates - - rounds := generateMaskAndRounds8(input, maskRounds) - - for r := 0; r < rounds; r++ { - m := maskRounds[r] - var cache cache8 // stack storage for block8 tmp state - block8(&sdup.v0[0], uintptr(baseMin), &ptrs[0], &cache[0], int(64*m.rounds)) - - for j := 0; j < len(ptrs); j++ { - ptrs[j] += int32(64 * m.rounds) // update pointers for next round - if m.mask&(1<<j) != 0 { // update digest if still masked as active - (*s).v0[j], (*s).v1[j], (*s).v2[j], (*s).v3[j] = sdup.v0[j], sdup.v1[j], sdup.v2[j], sdup.v3[j] - } - } - } -} |