aaru-dps/Aaru.Checksums.Native
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General refactor and cleanup.

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This commit is contained in:
Natalia Portillo
2024-04-30 15:12:48 +01:00
parent 552aa9da02
commit bd5051ce18
48 changed files with 1157 additions and 1290 deletions
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30
adler32_ssse3.c
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@@ -39,7 +39,6 @@
#include "library.h"
#include "adler32.h"
/**
* @brief Calculate Adler-32 checksum for a given data using SSSE3 instructions.
*
@@ -50,8 +49,8 @@
* @param data Pointer to the data buffer.
* @param len Length of the data buffer in bytes.
*/
AARU_EXPORT TARGET_WITH_SSSE3 void AARU_CALL
adler32_ssse3(uint16_t *sum1, uint16_t *sum2, const uint8_t *data, long len)
AARU_EXPORT TARGET_WITH_SSSE3 void AARU_CALL adler32_ssse3(uint16_t *sum1, uint16_t *sum2, const uint8_t *data,
long len)
{
uint32_t s1 = *sum1;
uint32_t s2 = *sum2;
@@ -80,8 +79,7 @@ adler32_ssse3(uint16_t *sum1, uint16_t *sum2, const uint8_t *data, long len)
__m128i v_ps = _mm_set_epi32(0, 0, 0, s1 * n);
__m128i v_s2 = _mm_set_epi32(0, 0, 0, s2);
__m128i v_s1 = _mm_set_epi32(0, 0, 0, 0);
do
{
do {
/*
* Load 32 input bytes.
*/
@@ -90,21 +88,20 @@ adler32_ssse3(uint16_t *sum1, uint16_t *sum2, const uint8_t *data, long len)
/*
* Add previous block byte sum to v_ps.
*/
v_ps = _mm_add_epi32(v_ps, v_s1);
v_ps = _mm_add_epi32(v_ps, v_s1);
/*
* Horizontally add the bytes for s1, multiply-adds the
* bytes by [ 32, 31, 30, ... ] for s2.
*/
v_s1 = _mm_add_epi32(v_s1, _mm_sad_epu8(bytes1, zero));
const __m128i mad1 = _mm_maddubs_epi16(bytes1, tap1);
v_s2 = _mm_add_epi32(v_s2, _mm_madd_epi16(mad1, ones));
v_s1 = _mm_add_epi32(v_s1, _mm_sad_epu8(bytes2, zero));
const __m128i mad2 = _mm_maddubs_epi16(bytes2, tap2);
v_s2 = _mm_add_epi32(v_s2, _mm_madd_epi16(mad2, ones));
v_s1 = _mm_add_epi32(v_s1, _mm_sad_epu8(bytes1, zero));
const __m128i mad1 = _mm_maddubs_epi16(bytes1, tap1);
v_s2 = _mm_add_epi32(v_s2, _mm_madd_epi16(mad1, ones));
v_s1 = _mm_add_epi32(v_s1, _mm_sad_epu8(bytes2, zero));
const __m128i mad2 = _mm_maddubs_epi16(bytes2, tap2);
v_s2 = _mm_add_epi32(v_s2, _mm_madd_epi16(mad2, ones));
data += BLOCK_SIZE;
}
while(--n);
v_s2 = _mm_add_epi32(v_s2, _mm_slli_epi32(v_ps, 5));
} while(--n);
v_s2 = _mm_add_epi32(v_s2, _mm_slli_epi32(v_ps, 5));
/*
* Sum epi32 ints v_s1(s2) and accumulate in s1(s2).
*/
@@ -151,8 +148,7 @@ adler32_ssse3(uint16_t *sum1, uint16_t *sum2, const uint8_t *data, long len)
s2 += (s1 += *data++);
len -= 16;
}
while(len--)
{ s2 += (s1 += *data++); }
while(len--) { s2 += (s1 += *data++); }
if(s1 >= ADLER_MODULE) s1 -= ADLER_MODULE;
s2 %= ADLER_MODULE;
}