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 FDR_ENGINE_DESCRIPTION_H
30#define FDR_ENGINE_DESCRIPTION_H
31
32#include "engine_description.h"
33
34#include <map>
35#include <memory>
36#include <vector>
37
38namespace ue2 {
39
40struct FDREngineDef {
41 u32 id;
42 u32 schemeWidth;
43 u32 numBuckets;
44 u64a cpu_features;
45};
46
47class FDREngineDescription : public EngineDescription {
48public:
49 u32 schemeWidth;
50 u32 stride;
51 u32 bits;
52
53 u32 getSchemeWidth() const { return schemeWidth; }
54 u32 getBucketWidth(BucketIndex b) const;
55 SchemeBitIndex getSchemeBit(BucketIndex b, PositionInBucket p) const;
56 u32 getNumTableEntries() const { return 1 << bits; }
57 u32 getTabSizeBytes() const {
58 return schemeWidth / 8 * getNumTableEntries();
59 }
60
61 explicit FDREngineDescription(const FDREngineDef &def);
62
63 u32 getDefaultFloodSuffixLength() const override;
64};
65
66std::unique_ptr<FDREngineDescription>
67chooseEngine(const target_t &target, const std::vector<hwlmLiteral> &vl,
68 bool make_small);
69std::unique_ptr<FDREngineDescription> getFdrDescription(u32 engineID);
70void getFdrDescriptions(std::vector<FDREngineDescription> *out);
71} // namespace ue2
72
73#endif
74