Vector Optimized Library of Kernels  2.4
Architecture-tuned implementations of math kernels
define_tables.h
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1 // Copyright 2020 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 
15 // The following preprocessor constants must be defined before including this
16 // file:
17 // - DEFINE_TABLE_FEATURE_TYPE, the underlying type (e.g. X86Features)
18 // - DEFINE_TABLE_FEATURES, the list of FEATURE macros to be inserted.
19 
20 // This file is to be included once per `cpuinfo_XXX.c` in order to construct
21 // feature getters and setters functions as well as several enum indexed tables
22 // from the db file.
23 // - `kGetters` a table of getters function pointers from feature enum to
24 // retrieve a feature,
25 // - `kSetters` a table of setters function pointers from feature enum to set a
26 // feature,
27 // - `kCpuInfoFlags` a table of strings from feature enum to /proc/cpuinfo
28 // flags,
29 // - `kHardwareCapabilities` a table of HardwareCapabilities structs indexed by
30 // their feature enum.
31 
32 #ifndef SRC_DEFINE_TABLES_H_
33 #define SRC_DEFINE_TABLES_H_
34 
35 #define FEATURE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) [ENUM] = CPUINFO_FLAG,
36 static const char* kCpuInfoFlags[] = {DEFINE_TABLE_FEATURES};
37 #undef FEATURE
38 
39 #ifndef DEFINE_TABLE_DONT_GENERATE_HWCAPS
40 #define FEATURE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) \
41  [ENUM] = (HardwareCapabilities){HWCAP, HWCAP2},
44 #undef FEATURE
45 #endif // DEFINE_TABLE_DONT_GENERATE_HWCAPS
46 
47 #define FEATURE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) \
48  static void set_##ENUM(DEFINE_TABLE_FEATURE_TYPE* features, bool value) { \
49  features->NAME = value; \
50  } \
51  static int get_##ENUM(const DEFINE_TABLE_FEATURE_TYPE* features) { \
52  return features->NAME; \
53  }
55 #undef FEATURE
56 
57 #define FEATURE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) [ENUM] = set_##ENUM,
59  bool) = {DEFINE_TABLE_FEATURES};
60 #undef FEATURE
61 
62 #define FEATURE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) [ENUM] = get_##ENUM,
63 static int (*const kGetters[])(const DEFINE_TABLE_FEATURE_TYPE*) = {
65 #undef FEATURE
66 
67 #endif // SRC_DEFINE_TABLES_H_
#define DEFINE_TABLE_FEATURE_TYPE
Definition: cpuinfo_aarch64.c:79
#define DEFINE_TABLE_FEATURES
Definition: cpuinfo_aarch64.c:27
static void(*const kSetters[])(DEFINE_TABLE_FEATURE_TYPE *, bool)
Definition: define_tables.h:58
static int(*const kGetters[])(const DEFINE_TABLE_FEATURE_TYPE *)
Definition: define_tables.h:63
static const char * kCpuInfoFlags[]
Definition: define_tables.h:36
static const HardwareCapabilities kHardwareCapabilities[]
Definition: define_tables.h:42
Definition: hwcaps.h:168
VOLK_API void
Call into a specific implementation given by name.