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Update gf128_avx.c

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Zhi Guan
2022-12-22 10:27:46 +08:00
parent 868f197f09
commit fe0712090d
1 changed files with 50 additions and 59 deletions
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25
src/gf128_avx.c
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@@ -115,7 +115,6 @@ void gf128_to_bytes(gf128_t a, uint8_t p[16])
gf128_t gf128_add(gf128_t ga, gf128_t gb) gf128_t gf128_add(gf128_t ga, gf128_t gb)
{ {
uint8_t r[16], a[16], b[16]; uint8_t r[16], a[16], b[16];
gf128_to_bytes(ga, a); gf128_to_bytes(ga, a);
@@ -128,27 +127,25 @@ gf128_t gf128_add(gf128_t ga, gf128_t gb)
_mm_storeu_si128((__m128i*)r, T0); _mm_storeu_si128((__m128i*)r, T0);
return gf128_from_bytes(r); return gf128_from_bytes(r);
} }
gf128_t gf128_mul(gf128_t ga, gf128_t gb) gf128_t gf128_mul(gf128_t ga, gf128_t gb)
{ {
uint8_t r[16], a[16], b[16];
const __m128i MASK = _mm_set_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15); const __m128i MASK = _mm_set_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
__m128i a1, b1;
__m128i T0, T1, T2, T3, T4, T5;
uint8_t r[16], a[16], b[16];
gf128_to_bytes(ga, a); gf128_to_bytes(ga, a);
gf128_to_bytes(gb, b); gf128_to_bytes(gb, b);
__m128i a1 = _mm_loadu_si128((const __m128i*)a); a1 = _mm_loadu_si128((const __m128i*)a);
__m128i b1 = _mm_loadu_si128((const __m128i*)b); b1 = _mm_loadu_si128((const __m128i*)b);
a1 = _mm_shuffle_epi8(a1, MASK); a1 = _mm_shuffle_epi8(a1, MASK);
b1 = _mm_shuffle_epi8(b1, MASK); b1 = _mm_shuffle_epi8(b1, MASK);
__m128i T0, T1, T2, T3, T4, T5;
T0 = _mm_clmulepi64_si128(a1, b1, 0x00); T0 = _mm_clmulepi64_si128(a1, b1, 0x00);
T1 = _mm_clmulepi64_si128(a1, b1, 0x01); T1 = _mm_clmulepi64_si128(a1, b1, 0x01);
T2 = _mm_clmulepi64_si128(a1, b1, 0x10); T2 = _mm_clmulepi64_si128(a1, b1, 0x10);
@@ -193,25 +190,21 @@ gf128_t gf128_mul(gf128_t ga, gf128_t gb)
T3 = _mm_xor_si128(T3, T4); T3 = _mm_xor_si128(T3, T4);
T3 = _mm_shuffle_epi8(T3, MASK); T3 = _mm_shuffle_epi8(T3, MASK);
_mm_storeu_si128((__m128i*)r, T3); _mm_storeu_si128((__m128i*)r, T3);
return gf128_from_bytes(r); return gf128_from_bytes(r);
} }
gf128_t gf128_mul2(gf128_t ga) gf128_t gf128_mul2(gf128_t ga)
{ {
uint8_t r[16], a[16];
const __m128i MASK = _mm_set_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15); const __m128i MASK = _mm_set_epi8(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15);
__m128i MASK1 = _mm_set_epi8(0xe1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0); __m128i MASK1 = _mm_set_epi8(0xe1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);
__m128i MASK2 = _mm_set_epi8(0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0); __m128i MASK2 = _mm_set_epi8(0x80,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0);
__m128i a1;
__m128i T0, T1, T2, T3, T4, T5; __m128i T0, T1, T2, T3, T4, T5;
uint8_t r[16], a[16];
gf128_to_bytes(ga, a); gf128_to_bytes(ga, a);
a1 = _mm_loadu_si128((const __m128i*)a);
__m128i a1 = _mm_loadu_si128((const __m128i*)a);
a1 = _mm_shuffle_epi8(a1, MASK); a1 = _mm_shuffle_epi8(a1, MASK);
T0 = _mm_srli_epi64(a1,1); T0 = _mm_srli_epi64(a1,1);
@@ -227,8 +220,6 @@ gf128_t gf128_mul2(gf128_t ga)
T5 = _mm_xor_si128(T5,T3); T5 = _mm_xor_si128(T5,T3);
T5 = _mm_shuffle_epi8(T5, MASK); T5 = _mm_shuffle_epi8(T5, MASK);
_mm_storeu_si128((__m128i*)r, T5); _mm_storeu_si128((__m128i*)r, T5);
return gf128_from_bytes(r); return gf128_from_bytes(r);
} }