| /* |
| * Copyright (C) 2017 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| |
| #ifndef ANDROID_VINTF_ARCH_H |
| #define ANDROID_VINTF_ARCH_H |
| |
| #include <stdint.h> |
| #include <string> |
| #include <array> |
| |
| namespace android { |
| namespace vintf { |
| |
| enum class Arch : size_t { |
| ARCH_EMPTY = 0, |
| ARCH_32, |
| ARCH_64, |
| ARCH_32_64 |
| }; |
| |
| static const std::array<std::string, 4> gArchStrings = { |
| { |
| "", |
| "32", |
| "64", |
| "32+64", |
| } |
| }; |
| |
| inline bool has32(Arch arch) { |
| return arch == Arch::ARCH_32 || arch == Arch::ARCH_32_64; |
| } |
| |
| inline bool has64(Arch arch) { |
| return arch == Arch::ARCH_64 || arch == Arch::ARCH_32_64; |
| } |
| |
| inline constexpr Arch operator|(Arch lft, Arch rgt) { |
| return static_cast<Arch>(static_cast<size_t>(lft) | static_cast<size_t>(rgt)); |
| } |
| static_assert((Arch::ARCH_32 | Arch::ARCH_64) == Arch::ARCH_32_64, "bad Arch::operator|"); |
| |
| inline Arch& operator|=(Arch& lft, Arch rgt) { |
| return (lft = lft | rgt); |
| } |
| |
| // Returns true if lft defines all bitnesses in rgt, otherwise false. |
| inline constexpr bool contains(Arch lft, Arch rgt) { |
| return !(~static_cast<size_t>(lft) & static_cast<size_t>(rgt)); |
| } |
| |
| static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_32_64), "bad contains(Arch, Arch)"); |
| static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_64), "bad contains(Arch, Arch)"); |
| static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_32), "bad contains(Arch, Arch)"); |
| static_assert(contains(Arch::ARCH_32_64, Arch::ARCH_EMPTY), "bad contains(Arch, Arch)"); |
| static_assert(contains(Arch::ARCH_32, Arch::ARCH_EMPTY), "bad contains(Arch, Arch)"); |
| static_assert(contains(Arch::ARCH_64, Arch::ARCH_EMPTY), "bad contains(Arch, Arch)"); |
| static_assert(!contains(Arch::ARCH_32, Arch::ARCH_32_64), "bad contains(Arch, Arch)"); |
| static_assert(!contains(Arch::ARCH_64, Arch::ARCH_32_64), "bad contains(Arch, Arch)"); |
| static_assert(!contains(Arch::ARCH_32, Arch::ARCH_64), "bad contains(Arch, Arch)"); |
| static_assert(!contains(Arch::ARCH_64, Arch::ARCH_32), "bad contains(Arch, Arch)"); |
| static_assert(!contains(Arch::ARCH_EMPTY, Arch::ARCH_32), "bad contains(Arch, Arch)"); |
| static_assert(!contains(Arch::ARCH_EMPTY, Arch::ARCH_64), "bad contains(Arch, Arch)"); |
| |
| } // namespace vintf |
| } // namespace android |
| |
| #endif // ANDROID_VINTF_ARCH_H |