1 /* 2 * Copyright (c) 2015-2016, Intel Corporation 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions are met: 6 * 7 * * Redistributions of source code must retain the above copyright notice, 8 * this list of conditions and the following disclaimer. 9 * * Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * * Neither the name of Intel Corporation nor the names of its contributors 13 * may be used to endorse or promote products derived from this software 14 * without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 17 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 19 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 20 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 21 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 22 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 23 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 24 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 25 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 26 * POSSIBILITY OF SUCH DAMAGE. 27 */ 28 29 /** \file 30 * \brief Runtime context structures (NFAContext128 and friends) for the NFA. 31 */ 32 33 #ifndef LIMEX_CONTEXT_H 34 #define LIMEX_CONTEXT_H 35 36 #include "ue2common.h" 37 #include "callback.h" 38 #include "util/simd_utils.h" // for m128 etc 39 40 // Runtime context structures. 41 42 /* Note: The size of the context structures may vary from platform to platform 43 * (notably, for the Limex64 structure). As a result, information based on the 44 * size and other detail of these structures should not be written into the 45 * bytecode -- really, the details of the structure should not be accessed by 46 * the ue2 compile side at all. 47 */ 48 #ifdef __cplusplus 49 #error ue2 runtime only file 50 #endif 51 52 /* cached_estate/esucc etc... 53 * 54 * If the exception state matches the cached_estate we will apply 55 * the or in the cached_esucc to the successor states rather than processing 56 * the exceptions. 57 * 58 * If the current exception state is a superset of the cached_estate, the 59 * cache is NOT used at all. 60 * 61 * The cache is updated when we see a different cacheable estate. 62 */ 63 64 #define GEN_CONTEXT_STRUCT(nsize, ntype) \ 65 struct ALIGN_CL_DIRECTIVE NFAContext##nsize { \ 66 ntype s; /**< state bitvector (on entry/exit) */ \ 67 ntype local_succ; /**< used by exception handling for large models */ \ 68 ntype cached_estate; /* inited to 0 */ \ 69 ntype cached_esucc; \ 70 char cached_br; /**< cached_estate contains a br state */ \ 71 const ReportID *cached_reports; \ 72 union RepeatControl *repeat_ctrl; \ 73 char *repeat_state; \ 74 NfaCallback callback; \ 75 void *context; \ 76 }; 77 78 GEN_CONTEXT_STRUCT(32, u32) 79 #ifdef ARCH_64_BIT 80 GEN_CONTEXT_STRUCT(64, u64a) 81 #else 82 GEN_CONTEXT_STRUCT(64, m128) 83 #endif 84 GEN_CONTEXT_STRUCT(128, m128) 85 GEN_CONTEXT_STRUCT(256, m256) 86 GEN_CONTEXT_STRUCT(384, m384) 87 GEN_CONTEXT_STRUCT(512, m512) 88 89 #undef GEN_CONTEXT_STRUCT 90 91 #endif 92