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}, 42 static const HardwareCapabilities kHardwareCapabilities[] = { 43 DEFINE_TABLE_FEATURES}; 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 } 54 DEFINE_TABLE_FEATURES 55 #undef FEATURE 56 57 #define FEATURE(ENUM, NAME, CPUINFO_FLAG, HWCAP, HWCAP2) [ENUM] = set_##ENUM, 58 static void (*const kSetters[])(DEFINE_TABLE_FEATURE_TYPE*, 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*) = { 64 DEFINE_TABLE_FEATURES}; 65 #undef FEATURE 66 67 #endif // SRC_DEFINE_TABLES_H_ 68