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#include "init.h"
30#include "match.h"
31#include "runtime.h"
32#include "scratch.h"
33#include "rose.h"
34#include "rose_common.h"
35#include "rose_internal.h"
36#include "ue2common.h"
37#include "nfa/mcclellan.h"
38#include "nfa/nfa_api_util.h"
39#include "nfa/nfa_internal.h"
40#include "util/multibit.h"
41
42#include <string.h>
43
44static really_inline
45void init_rstate(const struct RoseEngine *t, char *state) {
46 // Set runtime state: we take our initial groups from the RoseEngine.
47 DEBUG_PRINTF("setting initial groups to 0x%016llx\n", t->initialGroups);
48 storeGroups(t, state, t->initialGroups);
49}
50
51static really_inline
52void init_outfixes(const struct RoseEngine *t, char *state) {
53 /* The active leaf array has been init'ed by the scatter with outfix
54 * bits set on */
55
56 // Init the NFA state for each outfix.
57 for (u32 qi = t->outfixBeginQueue; qi < t->outfixEndQueue; qi++) {
58 const struct NfaInfo *info = getNfaInfoByQueue(t, qi);
59 const struct NFA *nfa = getNfaByInfo(t, info);
60 nfaInitCompressedState(nfa, 0, state + info->stateOffset,
61 0 /* assume NUL at start */);
62 }
63
64 if (t->initMpvNfa != MO_INVALID_IDX) {
65 const struct NfaInfo *info = getNfaInfoByQueue(t, t->initMpvNfa);
66 const struct NFA *nfa = getNfaByInfo(t, info);
67 nfaInitCompressedState(nfa, 0, state + info->stateOffset,
68 0 /* assume NUL at start */);
69 mmbit_set(getActiveLeafArray(t, state), t->activeArrayCount,
70 t->initMpvNfa);
71 }
72}
73
74void roseInitState(const struct RoseEngine *t, char *state) {
75 assert(t);
76 assert(state);
77
78 DEBUG_PRINTF("init for Rose %p with %u state indices)\n", t,
79 t->rolesWithStateCount);
80
81 // Rose is guaranteed 8-aligned state
82 assert(ISALIGNED_N(state, 8));
83
84 init_rstate(t, state);
85
86 init_state(t, state);
87 init_outfixes(t, state);
88}
89