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/* SPDX-License-Identifier: BSD-3-Clause
* Copyright(c) 2010-2014 Intel Corporation
*/
#ifndef _RTE_ACL_VECT_H_
#define _RTE_ACL_VECT_H_
/**
* @file
*
* RTE ACL SSE/AVX related header.
*/
#ifdef __cplusplus
extern "C" {
#endif
/*
* Takes 2 SIMD registers containing N transitions eachi (tr0, tr1).
* Shuffles it into different representation:
* lo - contains low 32 bits of given N transitions.
* hi - contains high 32 bits of given N transitions.
*/
#define ACL_TR_HILO(P, TC, tr0, tr1, lo, hi) do { \
lo = (typeof(lo))_##P##_shuffle_ps((TC)(tr0), (TC)(tr1), 0x88); \
hi = (typeof(hi))_##P##_shuffle_ps((TC)(tr0), (TC)(tr1), 0xdd); \
} while (0)
/*
* Calculate the address of the next transition for
* all types of nodes. Note that only DFA nodes and range
* nodes actually transition to another node. Match
* nodes not supposed to be encountered here.
* For quad range nodes:
* Calculate number of range boundaries that are less than the
* input value. Range boundaries for each node are in signed 8 bit,
* ordered from -128 to 127.
* This is effectively a popcnt of bytes that are greater than the
* input byte.
* Single nodes are processed in the same ways as quad range nodes.
*/
#define ACL_TR_CALC_ADDR(P, S, \
addr, index_mask, next_input, shuffle_input, \
ones_16, range_base, tr_lo, tr_hi) do { \
\
typeof(addr) in, node_type, r, t; \
typeof(addr) dfa_msk, dfa_ofs, quad_ofs; \
\
t = _##P##_xor_si##S(index_mask, index_mask); \
in = _##P##_shuffle_epi8(next_input, shuffle_input); \
\
/* Calc node type and node addr */ \
node_type = _##P##_andnot_si##S(index_mask, tr_lo); \
addr = _##P##_and_si##S(index_mask, tr_lo); \
\
/* mask for DFA type(0) nodes */ \
dfa_msk = _##P##_cmpeq_epi32(node_type, t); \
\
/* DFA calculations. */ \
r = _##P##_srli_epi32(in, 30); \
r = _##P##_add_epi8(r, range_base); \
t = _##P##_srli_epi32(in, 24); \
r = _##P##_shuffle_epi8(tr_hi, r); \
\
dfa_ofs = _##P##_sub_epi32(t, r); \
\
/* QUAD/SINGLE caluclations. */ \
t = _##P##_cmpgt_epi8(in, tr_hi); \
t = _##P##_sign_epi8(t, t); \
t = _##P##_maddubs_epi16(t, t); \
quad_ofs = _##P##_madd_epi16(t, ones_16); \
\
/* blend DFA and QUAD/SINGLE. */ \
t = _##P##_blendv_epi8(quad_ofs, dfa_ofs, dfa_msk); \
\
/* calculate address for next transitions. */ \
addr = _##P##_add_epi32(addr, t); \
} while (0)
#ifdef __cplusplus
}
#endif
#endif /* _RTE_ACL_VECT_H_ */
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