b379f8d81f
PR go/78789
runtime: don't build aeshash.c if the assembler doesn't support it
This is for CentOS 5, whose assembler does not know the aesinc
instruction.
Fixes GCC PR 78789.
Patch by Uros Bizjak.
Reviewed-on: https://go-review.googlesource.com/34796
From-SVN: r244031
587 lines
20 KiB
C
587 lines
20 KiB
C
// Copyright 2016 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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// Hash code using AES intrinsics.
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#include "runtime.h"
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uintptr aeshashbody(void*, uintptr, uintptr, Slice)
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__asm__(GOSYM_PREFIX "runtime.aeshashbody");
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uintptr aeshashbody(void*, uintptr, uintptr, Slice)
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__attribute__((no_split_stack));
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#if (defined(__i386__) || defined(__x86_64__)) && defined(HAVE_AS_X86_AES)
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#include <emmintrin.h>
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#include <tmmintrin.h>
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#include <wmmintrin.h>
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// Force appropriate CPU level. We won't call here unless the CPU
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// supports it.
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#pragma GCC target("ssse3", "aes")
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#ifdef __x86_64__
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// aeshashbody implements a hash function using AES instructions
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// available in recent x86 processors. Note this is not encryption,
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// just hashing.
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//
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// This is written to produce exactly the same results as the gc
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// implementation, not because that matters, but just to ensure that
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// this does something reasonable.
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uintptr aeshashbody(void* p, uintptr seed, uintptr size, Slice aeskeysched) {
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__m128i mseed, mseed2, mseed3, mseed4, mseed5, mseed6, mseed7, mseed8;
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__m128i mval, mval2, mval3, mval4, mval5, mval6, mval7, mval8;
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// Start with hash seed.
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mseed = _mm_cvtsi64_si128(seed);
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// Get 16 bits of length.
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mseed = _mm_insert_epi16(mseed, size, 4);
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// Repeat length 4 times total.
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mseed = _mm_shufflehi_epi16(mseed, 0);
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// Save unscrambled seed.
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mseed2 = mseed;
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// XOR in per-process seed.
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mseed ^= _mm_loadu_si128(aeskeysched.__values);
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// Scramble seed.
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mseed = _mm_aesenc_si128(mseed, mseed);
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if (size <= 16) {
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if (size == 0) {
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// Return scrambled input seed.
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return _mm_cvtsi128_si64(_mm_aesenc_si128(mseed, mseed));
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} else if (size < 16) {
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if ((((uintptr)(p) + 16) & 0xff0) != 0) {
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static const uint64 masks[32]
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__attribute__ ((aligned(16))) =
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{
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0x0000000000000000, 0x0000000000000000,
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0x00000000000000ff, 0x0000000000000000,
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0x000000000000ffff, 0x0000000000000000,
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0x0000000000ffffff, 0x0000000000000000,
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0x00000000ffffffff, 0x0000000000000000,
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0x000000ffffffffff, 0x0000000000000000,
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0x0000ffffffffffff, 0x0000000000000000,
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0x00ffffffffffffff, 0x0000000000000000,
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0xffffffffffffffff, 0x0000000000000000,
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0xffffffffffffffff, 0x00000000000000ff,
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0xffffffffffffffff, 0x000000000000ffff,
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0xffffffffffffffff, 0x0000000000ffffff,
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0xffffffffffffffff, 0x00000000ffffffff,
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0xffffffffffffffff, 0x000000ffffffffff,
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0xffffffffffffffff, 0x0000ffffffffffff,
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0xffffffffffffffff, 0x00ffffffffffffff
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};
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// 16 bytes loaded at p won't cross a page
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// boundary, so we can load directly.
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mval = _mm_loadu_si128(p);
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mval &= *(const __m128i*)(&masks[size*2]);
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} else {
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static const uint64 shifts[32]
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__attribute__ ((aligned(16))) =
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{
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0x0000000000000000, 0x0000000000000000,
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0xffffffffffffff0f, 0xffffffffffffffff,
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0xffffffffffff0f0e, 0xffffffffffffffff,
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0xffffffffff0f0e0d, 0xffffffffffffffff,
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0xffffffff0f0e0d0c, 0xffffffffffffffff,
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0xffffff0f0e0d0c0b, 0xffffffffffffffff,
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0xffff0f0e0d0c0b0a, 0xffffffffffffffff,
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0xff0f0e0d0c0b0a09, 0xffffffffffffffff,
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0x0f0e0d0c0b0a0908, 0xffffffffffffffff,
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0x0e0d0c0b0a090807, 0xffffffffffffff0f,
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0x0d0c0b0a09080706, 0xffffffffffff0f0e,
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0x0c0b0a0908070605, 0xffffffffff0f0e0d,
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0x0b0a090807060504, 0xffffffff0f0e0d0c,
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0x0a09080706050403, 0xffffff0f0e0d0c0b,
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0x0908070605040302, 0xffff0f0e0d0c0b0a,
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0x0807060504030201, 0xff0f0e0d0c0b0a09,
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};
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// address ends in 1111xxxx. Might be
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// up against a page boundary, so load
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// ending at last byte. Then shift
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// bytes down using pshufb.
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mval = _mm_loadu_si128((void*)((char*)p - 16 + size));
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mval = _mm_shuffle_epi8(mval, *(const __m128i*)(&shifts[size*2]));
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}
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} else {
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mval = _mm_loadu_si128(p);
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}
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// XOR data with seed.
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mval ^= mseed;
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// Scramble combo 3 times.
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mval = _mm_aesenc_si128(mval, mval);
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mval = _mm_aesenc_si128(mval, mval);
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mval = _mm_aesenc_si128(mval, mval);
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return _mm_cvtsi128_si64(mval);
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} else if (size <= 32) {
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// Make second starting seed.
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mseed2 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 16));
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mseed2 = _mm_aesenc_si128(mseed2, mseed2);
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// Load data to be hashed.
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mval = _mm_loadu_si128(p);
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mval2 = _mm_loadu_si128((void*)((char*)p + size - 16));
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// XOR with seed.
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mval ^= mseed;
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mval2 ^= mseed2;
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// Scramble 3 times.
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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// Combine results.
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mval ^= mval2;
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return _mm_cvtsi128_si64(mval);
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} else if (size <= 64) {
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// Make 3 more starting seeds.
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mseed3 = mseed2;
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mseed4 = mseed2;
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mseed2 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 16));
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mseed3 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 32));
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mseed4 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 48));
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mseed2 = _mm_aesenc_si128(mseed2, mseed2);
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mseed3 = _mm_aesenc_si128(mseed3, mseed3);
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mseed4 = _mm_aesenc_si128(mseed4, mseed4);
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mval = _mm_loadu_si128(p);
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mval2 = _mm_loadu_si128((void*)((char*)p + 16));
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mval3 = _mm_loadu_si128((void*)((char*)p + size - 32));
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mval4 = _mm_loadu_si128((void*)((char*)p + size - 16));
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mval ^= mseed;
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mval2 ^= mseed2;
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mval3 ^= mseed3;
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mval4 ^= mseed4;
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval ^= mval3;
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mval2 ^= mval4;
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mval ^= mval2;
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return _mm_cvtsi128_si64(mval);
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} else if (size <= 128) {
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// Make 7 more starting seeds.
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mseed3 = mseed2;
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mseed4 = mseed2;
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mseed5 = mseed2;
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mseed6 = mseed2;
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mseed7 = mseed2;
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mseed8 = mseed2;
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mseed2 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 16));
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mseed3 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 32));
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mseed4 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 48));
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mseed5 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 64));
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mseed6 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 80));
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mseed7 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 96));
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mseed8 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 112));
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mseed2 = _mm_aesenc_si128(mseed2, mseed2);
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mseed3 = _mm_aesenc_si128(mseed3, mseed3);
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mseed4 = _mm_aesenc_si128(mseed4, mseed4);
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mseed5 = _mm_aesenc_si128(mseed5, mseed5);
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mseed6 = _mm_aesenc_si128(mseed6, mseed6);
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mseed7 = _mm_aesenc_si128(mseed7, mseed7);
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mseed8 = _mm_aesenc_si128(mseed8, mseed8);
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// Load data.
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mval = _mm_loadu_si128(p);
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mval2 = _mm_loadu_si128((void*)((char*)p + 16));
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mval3 = _mm_loadu_si128((void*)((char*)p + 32));
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mval4 = _mm_loadu_si128((void*)((char*)p + 48));
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mval5 = _mm_loadu_si128((void*)((char*)p + size - 64));
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mval6 = _mm_loadu_si128((void*)((char*)p + size - 48));
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mval7 = _mm_loadu_si128((void*)((char*)p + size - 32));
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mval8 = _mm_loadu_si128((void*)((char*)p + size - 16));
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// XOR with seed.
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mval ^= mseed;
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mval2 ^= mseed2;
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mval3 ^= mseed3;
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mval4 ^= mseed4;
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mval5 ^= mseed5;
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mval6 ^= mseed6;
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mval7 ^= mseed7;
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mval8 ^= mseed8;
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// Scramble 3 times.
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval5 = _mm_aesenc_si128(mval5, mval5);
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mval6 = _mm_aesenc_si128(mval6, mval6);
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mval7 = _mm_aesenc_si128(mval7, mval7);
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mval8 = _mm_aesenc_si128(mval8, mval8);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval5 = _mm_aesenc_si128(mval5, mval5);
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mval6 = _mm_aesenc_si128(mval6, mval6);
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mval7 = _mm_aesenc_si128(mval7, mval7);
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mval8 = _mm_aesenc_si128(mval8, mval8);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval5 = _mm_aesenc_si128(mval5, mval5);
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mval6 = _mm_aesenc_si128(mval6, mval6);
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mval7 = _mm_aesenc_si128(mval7, mval7);
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mval8 = _mm_aesenc_si128(mval8, mval8);
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// Combine results.
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mval ^= mval5;
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mval2 ^= mval6;
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mval3 ^= mval7;
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mval4 ^= mval8;
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mval ^= mval3;
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mval2 ^= mval4;
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mval ^= mval2;
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return _mm_cvtsi128_si64(mval);
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} else {
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// Make 7 more starting seeds.
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mseed3 = mseed2;
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mseed4 = mseed2;
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mseed5 = mseed2;
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mseed6 = mseed2;
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mseed7 = mseed2;
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mseed8 = mseed2;
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mseed2 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 16));
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mseed3 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 32));
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mseed4 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 48));
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mseed5 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 64));
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mseed6 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 80));
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mseed7 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 96));
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mseed8 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 112));
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mseed2 = _mm_aesenc_si128(mseed2, mseed2);
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mseed3 = _mm_aesenc_si128(mseed3, mseed3);
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mseed4 = _mm_aesenc_si128(mseed4, mseed4);
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mseed5 = _mm_aesenc_si128(mseed5, mseed5);
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mseed6 = _mm_aesenc_si128(mseed6, mseed6);
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mseed7 = _mm_aesenc_si128(mseed7, mseed7);
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mseed8 = _mm_aesenc_si128(mseed8, mseed8);
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// Start with last (possibly overlapping) block.
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mval = _mm_loadu_si128((void*)((char*)p + size - 128));
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mval2 = _mm_loadu_si128((void*)((char*)p + size - 112));
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mval3 = _mm_loadu_si128((void*)((char*)p + size - 96));
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mval4 = _mm_loadu_si128((void*)((char*)p + size - 80));
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mval5 = _mm_loadu_si128((void*)((char*)p + size - 64));
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mval6 = _mm_loadu_si128((void*)((char*)p + size - 48));
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mval7 = _mm_loadu_si128((void*)((char*)p + size - 32));
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mval8 = _mm_loadu_si128((void*)((char*)p + size - 16));
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// XOR in seed.
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mval ^= mseed;
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mval2 ^= mseed2;
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mval3 ^= mseed3;
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mval4 ^= mseed4;
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mval5 ^= mseed5;
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mval6 ^= mseed6;
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mval7 ^= mseed7;
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mval8 ^= mseed8;
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// Compute number of remaining 128-byte blocks.
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size--;
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size >>= 7;
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do {
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// Scramble state.
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval5 = _mm_aesenc_si128(mval5, mval5);
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mval6 = _mm_aesenc_si128(mval6, mval6);
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mval7 = _mm_aesenc_si128(mval7, mval7);
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mval8 = _mm_aesenc_si128(mval8, mval8);
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// Scramble state, XOR in a block.
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mval = _mm_aesenc_si128(mval, _mm_loadu_si128(p));
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mval2 = _mm_aesenc_si128(mval2, _mm_loadu_si128((void*)((char*)p + 16)));
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mval3 = _mm_aesenc_si128(mval3, _mm_loadu_si128((void*)((char*)p + 32)));
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mval4 = _mm_aesenc_si128(mval4, _mm_loadu_si128((void*)((char*)p + 48)));
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mval5 = _mm_aesenc_si128(mval5, _mm_loadu_si128((void*)((char*)p + 64)));
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mval6 = _mm_aesenc_si128(mval6, _mm_loadu_si128((void*)((char*)p + 80)));
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mval7 = _mm_aesenc_si128(mval7, _mm_loadu_si128((void*)((char*)p + 96)));
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mval8 = _mm_aesenc_si128(mval8, _mm_loadu_si128((void*)((char*)p + 112)));
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p = (void*)((char*)p + 128);
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} while (--size > 0);
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// 3 more scrambles to finish.
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval5 = _mm_aesenc_si128(mval5, mval5);
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mval6 = _mm_aesenc_si128(mval6, mval6);
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mval7 = _mm_aesenc_si128(mval7, mval7);
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mval8 = _mm_aesenc_si128(mval8, mval8);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval5 = _mm_aesenc_si128(mval5, mval5);
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mval6 = _mm_aesenc_si128(mval6, mval6);
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mval7 = _mm_aesenc_si128(mval7, mval7);
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mval8 = _mm_aesenc_si128(mval8, mval8);
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mval = _mm_aesenc_si128(mval, mval);
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mval2 = _mm_aesenc_si128(mval2, mval2);
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mval3 = _mm_aesenc_si128(mval3, mval3);
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mval4 = _mm_aesenc_si128(mval4, mval4);
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mval5 = _mm_aesenc_si128(mval5, mval5);
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mval6 = _mm_aesenc_si128(mval6, mval6);
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mval7 = _mm_aesenc_si128(mval7, mval7);
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mval8 = _mm_aesenc_si128(mval8, mval8);
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mval ^= mval5;
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mval2 ^= mval6;
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mval3 ^= mval7;
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mval4 ^= mval8;
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mval ^= mval3;
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mval2 ^= mval4;
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mval ^= mval2;
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return _mm_cvtsi128_si64(mval);
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}
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|
}
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#else // !defined(__x86_64__)
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// The 32-bit version of aeshashbody.
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uintptr aeshashbody(void* p, uintptr seed, uintptr size, Slice aeskeysched) {
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__m128i mseed, mseed2, mseed3, mseed4;
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__m128i mval, mval2, mval3, mval4;
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|
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// Start with hash seed.
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mseed = _mm_cvtsi32_si128(seed);
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// Get 16 bits of length.
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mseed = _mm_insert_epi16(mseed, size, 4);
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// Replace size with its low 2 bytes repeated 4 times.
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mseed = _mm_shufflehi_epi16(mseed, 0);
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// Save unscrambled seed.
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mseed2 = mseed;
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// XOR in per-process seed.
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mseed ^= _mm_loadu_si128(aeskeysched.__values);
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// Scramble seed.
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mseed = _mm_aesenc_si128(mseed, mseed);
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if (size <= 16) {
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if (size == 0) {
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// Return scrambled input seed.
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return _mm_cvtsi128_si32(_mm_aesenc_si128(mseed, mseed));
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} else if (size < 16) {
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if ((((uintptr)(p) + 16) & 0xff0) != 0) {
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static const uint64 masks[32]
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__attribute__ ((aligned(16))) =
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{
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0x0000000000000000, 0x0000000000000000,
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0x00000000000000ff, 0x0000000000000000,
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0x000000000000ffff, 0x0000000000000000,
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0x0000000000ffffff, 0x0000000000000000,
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0x00000000ffffffff, 0x0000000000000000,
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0x000000ffffffffff, 0x0000000000000000,
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0x0000ffffffffffff, 0x0000000000000000,
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0x00ffffffffffffff, 0x0000000000000000,
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0xffffffffffffffff, 0x0000000000000000,
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0xffffffffffffffff, 0x00000000000000ff,
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0xffffffffffffffff, 0x000000000000ffff,
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0xffffffffffffffff, 0x0000000000ffffff,
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0xffffffffffffffff, 0x00000000ffffffff,
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0xffffffffffffffff, 0x000000ffffffffff,
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0xffffffffffffffff, 0x0000ffffffffffff,
|
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0xffffffffffffffff, 0x00ffffffffffffff
|
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};
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|
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// 16 bytes loaded at p won't cross a page
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// boundary, so we can load it directly.
|
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mval = _mm_loadu_si128(p);
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mval &= *(const __m128i*)(&masks[size*2]);
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} else {
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static const uint64 shifts[32]
|
|
__attribute__ ((aligned(16))) =
|
|
{
|
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0x0000000000000000, 0x0000000000000000,
|
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0xffffffffffffff0f, 0xffffffffffffffff,
|
|
0xffffffffffff0f0e, 0xffffffffffffffff,
|
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0xffffffffff0f0e0d, 0xffffffffffffffff,
|
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0xffffffff0f0e0d0c, 0xffffffffffffffff,
|
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0xffffff0f0e0d0c0b, 0xffffffffffffffff,
|
|
0xffff0f0e0d0c0b0a, 0xffffffffffffffff,
|
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0xff0f0e0d0c0b0a09, 0xffffffffffffffff,
|
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0x0f0e0d0c0b0a0908, 0xffffffffffffffff,
|
|
0x0e0d0c0b0a090807, 0xffffffffffffff0f,
|
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0x0d0c0b0a09080706, 0xffffffffffff0f0e,
|
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0x0c0b0a0908070605, 0xffffffffff0f0e0d,
|
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0x0b0a090807060504, 0xffffffff0f0e0d0c,
|
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0x0a09080706050403, 0xffffff0f0e0d0c0b,
|
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0x0908070605040302, 0xffff0f0e0d0c0b0a,
|
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0x0807060504030201, 0xff0f0e0d0c0b0a09,
|
|
};
|
|
|
|
// address ends in 1111xxxx. Might be
|
|
// up against a page boundary, so load
|
|
// ending at last byte. Then shift
|
|
// bytes down using pshufb.
|
|
mval = _mm_loadu_si128((void*)((char*)p - 16 + size));
|
|
mval = _mm_shuffle_epi8(mval, *(const __m128i*)(&shifts[size*2]));
|
|
}
|
|
} else {
|
|
mval = _mm_loadu_si128(p);
|
|
}
|
|
|
|
// Scramble input, XOR in seed.
|
|
mval = _mm_aesenc_si128(mval, mseed);
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
return _mm_cvtsi128_si32(mval);
|
|
} else if (size <= 32) {
|
|
// Make second starting seed.
|
|
mseed2 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 16));
|
|
mseed2 = _mm_aesenc_si128(mseed2, mseed2);
|
|
// Load data to be hashed.
|
|
mval = _mm_loadu_si128(p);
|
|
mval2 = _mm_loadu_si128((void*)((char*)p + size - 16));
|
|
|
|
// Scramble 3 times.
|
|
mval = _mm_aesenc_si128(mval, mseed);
|
|
mval2 = _mm_aesenc_si128(mval2, mseed2);
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval2 = _mm_aesenc_si128(mval2, mval2);
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval2 = _mm_aesenc_si128(mval2, mval2);
|
|
|
|
// Combine results.
|
|
mval ^= mval2;
|
|
return _mm_cvtsi128_si32(mval);
|
|
} else if (size <= 64) {
|
|
// Make 3 more starting seeds.
|
|
mseed3 = mseed2;
|
|
mseed4 = mseed2;
|
|
mseed2 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 16));
|
|
mseed3 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 32));
|
|
mseed4 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 48));
|
|
mseed2 = _mm_aesenc_si128(mseed2, mseed2);
|
|
mseed3 = _mm_aesenc_si128(mseed3, mseed3);
|
|
mseed4 = _mm_aesenc_si128(mseed4, mseed4);
|
|
|
|
mval = _mm_loadu_si128(p);
|
|
mval2 = _mm_loadu_si128((void*)((char*)p + 16));
|
|
mval3 = _mm_loadu_si128((void*)((char*)p + size - 32));
|
|
mval4 = _mm_loadu_si128((void*)((char*)p + size - 16));
|
|
|
|
mval = _mm_aesenc_si128(mval, mseed);
|
|
mval2 = _mm_aesenc_si128(mval2, mseed2);
|
|
mval3 = _mm_aesenc_si128(mval3, mseed3);
|
|
mval4 = _mm_aesenc_si128(mval4, mseed4);
|
|
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval2 = _mm_aesenc_si128(mval2, mval2);
|
|
mval3 = _mm_aesenc_si128(mval3, mval3);
|
|
mval4 = _mm_aesenc_si128(mval4, mval4);
|
|
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval2 = _mm_aesenc_si128(mval2, mval2);
|
|
mval3 = _mm_aesenc_si128(mval3, mval3);
|
|
mval4 = _mm_aesenc_si128(mval4, mval4);
|
|
|
|
mval ^= mval3;
|
|
mval2 ^= mval4;
|
|
mval ^= mval2;
|
|
return _mm_cvtsi128_si32(mval);
|
|
} else {
|
|
// Make 3 more starting seeds.
|
|
mseed3 = mseed2;
|
|
mseed4 = mseed2;
|
|
mseed2 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 16));
|
|
mseed3 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 32));
|
|
mseed4 ^= _mm_loadu_si128((void*)((char*)aeskeysched.__values + 48));
|
|
mseed2 = _mm_aesenc_si128(mseed2, mseed2);
|
|
mseed3 = _mm_aesenc_si128(mseed3, mseed3);
|
|
mseed4 = _mm_aesenc_si128(mseed4, mseed4);
|
|
|
|
// Start with last (possibly overlapping) block.
|
|
mval = _mm_loadu_si128((void*)((char*)p + size - 64));
|
|
mval2 = _mm_loadu_si128((void*)((char*)p + size - 48));
|
|
mval3 = _mm_loadu_si128((void*)((char*)p + size - 32));
|
|
mval4 = _mm_loadu_si128((void*)((char*)p + size - 16));
|
|
|
|
// Scramble state once.
|
|
mval = _mm_aesenc_si128(mval, mseed);
|
|
mval2 = _mm_aesenc_si128(mval2, mseed2);
|
|
mval3 = _mm_aesenc_si128(mval3, mseed3);
|
|
mval4 = _mm_aesenc_si128(mval4, mseed4);
|
|
|
|
// Compute number of remaining 64-byte blocks.
|
|
size--;
|
|
size >>= 6;
|
|
do {
|
|
// Scramble state, XOR in a block.
|
|
mval = _mm_aesenc_si128(mval, _mm_loadu_si128(p));
|
|
mval2 = _mm_aesenc_si128(mval2, _mm_loadu_si128((void*)((char*)p + 16)));
|
|
mval3 = _mm_aesenc_si128(mval3, _mm_loadu_si128((void*)((char*)p + 32)));
|
|
mval4 = _mm_aesenc_si128(mval4, _mm_loadu_si128((void*)((char*)p + 48)));
|
|
|
|
// Scramble state.
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval2 = _mm_aesenc_si128(mval2, mval2);
|
|
mval3 = _mm_aesenc_si128(mval3, mval3);
|
|
mval4 = _mm_aesenc_si128(mval4, mval4);
|
|
|
|
p = (void*)((char*)p + 64);
|
|
} while (--size > 0);
|
|
|
|
// 2 more scrambles to finish.
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval2 = _mm_aesenc_si128(mval2, mval2);
|
|
mval3 = _mm_aesenc_si128(mval3, mval3);
|
|
mval4 = _mm_aesenc_si128(mval4, mval4);
|
|
|
|
mval = _mm_aesenc_si128(mval, mval);
|
|
mval2 = _mm_aesenc_si128(mval2, mval2);
|
|
mval3 = _mm_aesenc_si128(mval3, mval3);
|
|
mval4 = _mm_aesenc_si128(mval4, mval4);
|
|
|
|
mval ^= mval3;
|
|
mval2 ^= mval4;
|
|
mval ^= mval2;
|
|
return _mm_cvtsi128_si32(mval);
|
|
}
|
|
}
|
|
|
|
#endif // !defined(__x86_64__)
|
|
|
|
#else // !defined(__i386__) && !defined(__x86_64__) || !defined(HAVE_AS_X86_AES)
|
|
|
|
uintptr aeshashbody(void* p __attribute__((unused)),
|
|
uintptr seed __attribute__((unused)),
|
|
uintptr size __attribute__((unused)),
|
|
Slice aeskeysched __attribute__((unused))) {
|
|
// We should never get here on a non-x86 system.
|
|
runtime_throw("impossible call to aeshashbody");
|
|
}
|
|
|
|
#endif // !defined(__i386__) && !defined(__x86_64__) || !defined(HAVE_AS_X86_AES)
|