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/* chunkset_neon.c -- NEON inline functions to copy small data chunks.
* For conditions of distribution and use, see copyright notice in zlib.h
*/
#ifdef ARM_NEON
#include "neon_intrins.h"
#include "zbuild.h"
#include "zmemory.h"
#include "arch/generic/chunk_permute_table.h"
typedef uint8x16_t chunk_t;
#define HAVE_CHUNKMEMSET_2
#define HAVE_CHUNKMEMSET_4
#define HAVE_CHUNKMEMSET_8
#define HAVE_CHUNK_MAG
static const lut_rem_pair perm_idx_lut[13] = {
{0, 1}, /* 3 */
{0, 0}, /* don't care */
{1 * 32, 1}, /* 5 */
{2 * 32, 4}, /* 6 */
{3 * 32, 2}, /* 7 */
{0 * 32, 0}, /* don't care */
{4 * 32, 7}, /* 9 */
{5 * 32, 6}, /* 10 */
{6 * 32, 5}, /* 11 */
{7 * 32, 4}, /* 12 */
{8 * 32, 3}, /* 13 */
{9 * 32, 2}, /* 14 */
{10 * 32, 1},/* 15 */
};
static inline void chunkmemset_2(uint8_t *from, chunk_t *chunk) {
*chunk = vreinterpretq_u8_u16(vdupq_n_u16(zng_memread_2(from)));
}
static inline void chunkmemset_4(uint8_t *from, chunk_t *chunk) {
*chunk = vreinterpretq_u8_u32(vdupq_n_u32(zng_memread_4(from)));
}
static inline void chunkmemset_8(uint8_t *from, chunk_t *chunk) {
*chunk = vreinterpretq_u8_u64(vdupq_n_u64(zng_memread_8(from)));
}
#define CHUNKSIZE chunksize_neon
#define CHUNKCOPY chunkcopy_neon
#define CHUNKUNROLL chunkunroll_neon
#define CHUNKMEMSET chunkmemset_neon
#define CHUNKMEMSET_SAFE chunkmemset_safe_neon
static inline void loadchunk(uint8_t const *s, chunk_t *chunk) {
*chunk = vld1q_u8(s);
}
static inline void storechunk(uint8_t *out, chunk_t *chunk) {
vst1q_u8(out, *chunk);
}
static inline chunk_t GET_CHUNK_MAG(uint8_t *buf, uint32_t *chunk_rem, uint32_t dist) {
lut_rem_pair lut_rem = perm_idx_lut[dist - 3];
*chunk_rem = lut_rem.remval;
/* See note in chunkset_ssse3.c for why this is ok */
__msan_unpoison(buf + dist, 16 - dist);
/* This version of table is only available on aarch64 */
#if defined(_M_ARM64) || defined(_M_ARM64EC) || defined(__aarch64__)
uint8x16_t ret_vec = vld1q_u8(buf);
uint8x16_t perm_vec = vld1q_u8(permute_table + lut_rem.idx);
return vqtbl1q_u8(ret_vec, perm_vec);
#else
uint8x8_t ret0, ret1, a, b, perm_vec0, perm_vec1;
perm_vec0 = vld1_u8(permute_table + lut_rem.idx);
perm_vec1 = vld1_u8(permute_table + lut_rem.idx + 8);
a = vld1_u8(buf);
b = vld1_u8(buf + 8);
ret0 = vtbl1_u8(a, perm_vec0);
uint8x8x2_t ab;
ab.val[0] = a;
ab.val[1] = b;
ret1 = vtbl2_u8(ab, perm_vec1);
return vcombine_u8(ret0, ret1);
#endif
}
#include "chunkset_tpl.h"
#define INFLATE_FAST inflate_fast_neon
#include "inffast_tpl.h"
#endif
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