1 | /* |
2 | * Copyright (c) 2015-2017, 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 | #ifndef ACCEL_COMPILE_H |
30 | #define ACCEL_COMPILE_H |
31 | |
32 | #include "ue2common.h" |
33 | #include "util/charreach.h" |
34 | #include "util/flat_containers.h" |
35 | |
36 | union AccelAux; |
37 | |
38 | namespace ue2 { |
39 | |
40 | struct AccelInfo { |
41 | AccelInfo() : single_offset(0U), double_offset(0U), |
42 | single_stops(CharReach::dot()) {} |
43 | u32 single_offset; /**< offset correction to apply to single schemes */ |
44 | u32 double_offset; /**< offset correction to apply to double schemes */ |
45 | CharReach double_stop1; /**< single-byte accel stop literals for double |
46 | * schemes */ |
47 | flat_set<std::pair<u8, u8>> double_stop2; /**< double-byte accel stop |
48 | * literals */ |
49 | CharReach single_stops; /**< escapes for single byte acceleration */ |
50 | }; |
51 | |
52 | bool buildAccelAux(const AccelInfo &info, AccelAux *aux); |
53 | |
54 | /* returns true is the escape set can be handled with a masked double_verm */ |
55 | bool buildDvermMask(const flat_set<std::pair<u8, u8>> &escape_set, |
56 | u8 *m1_out = nullptr, u8 *m2_out = nullptr); |
57 | |
58 | } // namespace ue2 |
59 | |
60 | #endif |
61 | |