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Merge pull request #2090 from FearlessTobi/port-4599
Port citra-emu/citra#4244 and citra-emu/citra#4599: Changes to BitField
This commit is contained in:
bunnei
GitHub
commit
3e930304fe
10 changed files with 345 additions and 142 deletions
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@ -34,6 +34,7 @@
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#include <limits>
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#include <type_traits>
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#include "common/common_funcs.h"
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#include "common/swap.h"
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/*
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* Abstract bitfield class
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@ -108,7 +109,7 @@
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* symptoms.
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*/
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#pragma pack(1)
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template <std::size_t Position, std::size_t Bits, typename T>
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template <std::size_t Position, std::size_t Bits, typename T, typename EndianTag = LETag>
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struct BitField {
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private:
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// UnderlyingType is T for non-enum types and the underlying type of T if
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@ -121,7 +122,11 @@ private:
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// We store the value as the unsigned type to avoid undefined behaviour on value shifting
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using StorageType = std::make_unsigned_t<UnderlyingType>;
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using StorageTypeWithEndian = typename AddEndian<StorageType, EndianTag>::type;
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public:
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BitField& operator=(const BitField&) = default;
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/// Constants to allow limited introspection of fields if needed
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static constexpr std::size_t position = Position;
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static constexpr std::size_t bits = Bits;
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@ -170,7 +175,7 @@ public:
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}
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constexpr FORCE_INLINE void Assign(const T& value) {
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storage = (storage & ~mask) | FormatValue(value);
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storage = (static_cast<StorageType>(storage) & ~mask) | FormatValue(value);
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}
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constexpr T Value() const {
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@ -182,7 +187,7 @@ public:
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}
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private:
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StorageType storage;
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StorageTypeWithEndian storage;
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static_assert(bits + position <= 8 * sizeof(T), "Bitfield out of range");
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@ -193,3 +198,6 @@ private:
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static_assert(std::is_trivially_copyable_v<T>, "T must be trivially copyable in a BitField");
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};
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#pragma pack()
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template <std::size_t Position, std::size_t Bits, typename T>
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using BitFieldBE = BitField<Position, Bits, T, BETag>;
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@ -17,6 +17,8 @@
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#pragma once
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#include <type_traits>
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#if defined(_MSC_VER)
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#include <cstdlib>
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#elif defined(__linux__)
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@ -170,7 +172,7 @@ struct swap_struct_t {
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using swapped_t = swap_struct_t;
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protected:
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T value = T();
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T value;
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static T swap(T v) {
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return F::swap(v);
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@ -605,52 +607,154 @@ struct swap_double_t {
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}
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};
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template <typename T>
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struct swap_enum_t {
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static_assert(std::is_enum_v<T>);
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using base = std::underlying_type_t<T>;
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public:
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swap_enum_t() = default;
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swap_enum_t(const T& v) : value(swap(v)) {}
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swap_enum_t& operator=(const T& v) {
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value = swap(v);
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return *this;
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}
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operator T() const {
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return swap(value);
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}
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explicit operator base() const {
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return static_cast<base>(swap(value));
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}
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protected:
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T value{};
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// clang-format off
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using swap_t = std::conditional_t<
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std::is_same_v<base, u16>, swap_16_t<u16>, std::conditional_t<
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std::is_same_v<base, s16>, swap_16_t<s16>, std::conditional_t<
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std::is_same_v<base, u32>, swap_32_t<u32>, std::conditional_t<
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std::is_same_v<base, s32>, swap_32_t<s32>, std::conditional_t<
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std::is_same_v<base, u64>, swap_64_t<u64>, std::conditional_t<
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std::is_same_v<base, s64>, swap_64_t<s64>, void>>>>>>;
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// clang-format on
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static T swap(T x) {
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return static_cast<T>(swap_t::swap(static_cast<base>(x)));
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}
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};
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struct SwapTag {}; // Use the different endianness from the system
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struct KeepTag {}; // Use the same endianness as the system
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template <typename T, typename Tag>
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struct AddEndian;
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// KeepTag specializations
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template <typename T>
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struct AddEndian<T, KeepTag> {
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using type = T;
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};
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// SwapTag specializations
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template <>
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struct AddEndian<u8, SwapTag> {
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using type = u8;
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};
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template <>
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struct AddEndian<u16, SwapTag> {
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using type = swap_struct_t<u16, swap_16_t<u16>>;
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};
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template <>
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struct AddEndian<u32, SwapTag> {
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using type = swap_struct_t<u32, swap_32_t<u32>>;
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};
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template <>
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struct AddEndian<u64, SwapTag> {
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using type = swap_struct_t<u64, swap_64_t<u64>>;
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};
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template <>
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struct AddEndian<s8, SwapTag> {
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using type = s8;
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};
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template <>
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struct AddEndian<s16, SwapTag> {
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using type = swap_struct_t<s16, swap_16_t<s16>>;
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};
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template <>
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struct AddEndian<s32, SwapTag> {
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using type = swap_struct_t<s32, swap_32_t<s32>>;
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};
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template <>
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struct AddEndian<s64, SwapTag> {
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using type = swap_struct_t<s64, swap_64_t<s64>>;
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};
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template <>
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struct AddEndian<float, SwapTag> {
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using type = swap_struct_t<float, swap_float_t<float>>;
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};
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template <>
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struct AddEndian<double, SwapTag> {
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using type = swap_struct_t<double, swap_double_t<double>>;
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};
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template <typename T>
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struct AddEndian<T, SwapTag> {
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static_assert(std::is_enum_v<T>);
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using type = swap_enum_t<T>;
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};
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// Alias LETag/BETag as KeepTag/SwapTag depending on the system
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#if COMMON_LITTLE_ENDIAN
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using u16_le = u16;
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using u32_le = u32;
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using u64_le = u64;
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using s16_le = s16;
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using s32_le = s32;
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using s64_le = s64;
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using LETag = KeepTag;
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using BETag = SwapTag;
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using float_le = float;
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using double_le = double;
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using u64_be = swap_struct_t<u64, swap_64_t<u64>>;
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using s64_be = swap_struct_t<s64, swap_64_t<s64>>;
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using u32_be = swap_struct_t<u32, swap_32_t<u32>>;
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using s32_be = swap_struct_t<s32, swap_32_t<s32>>;
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using u16_be = swap_struct_t<u16, swap_16_t<u16>>;
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using s16_be = swap_struct_t<s16, swap_16_t<s16>>;
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using float_be = swap_struct_t<float, swap_float_t<float>>;
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using double_be = swap_struct_t<double, swap_double_t<double>>;
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#else
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using u64_le = swap_struct_t<u64, swap_64_t<u64>>;
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using s64_le = swap_struct_t<s64, swap_64_t<s64>>;
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using u32_le = swap_struct_t<u32, swap_32_t<u32>>;
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using s32_le = swap_struct_t<s32, swap_32_t<s32>>;
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using u16_le = swap_struct_t<u16, swap_16_t<u16>>;
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using s16_le = swap_struct_t<s16, swap_16_t<s16>>;
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using float_le = swap_struct_t<float, swap_float_t<float>>;
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using double_le = swap_struct_t<double, swap_double_t<double>>;
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using u16_be = u16;
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using u32_be = u32;
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using u64_be = u64;
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using s16_be = s16;
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using s32_be = s32;
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using s64_be = s64;
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using float_be = float;
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using double_be = double;
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using BETag = KeepTag;
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using LETag = SwapTag;
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#endif
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// Aliases for LE types
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using u16_le = AddEndian<u16, LETag>::type;
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using u32_le = AddEndian<u32, LETag>::type;
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using u64_le = AddEndian<u64, LETag>::type;
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using s16_le = AddEndian<s16, LETag>::type;
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using s32_le = AddEndian<s32, LETag>::type;
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using s64_le = AddEndian<s64, LETag>::type;
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template <typename T>
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using enum_le = std::enable_if_t<std::is_enum_v<T>, typename AddEndian<T, LETag>::type>;
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using float_le = AddEndian<float, LETag>::type;
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using double_le = AddEndian<double, LETag>::type;
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// Aliases for BE types
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using u16_be = AddEndian<u16, BETag>::type;
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using u32_be = AddEndian<u32, BETag>::type;
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using u64_be = AddEndian<u64, BETag>::type;
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using s16_be = AddEndian<s16, BETag>::type;
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using s32_be = AddEndian<s32, BETag>::type;
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using s64_be = AddEndian<s64, BETag>::type;
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template <typename T>
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using enum_be = std::enable_if_t<std::is_enum_v<T>, typename AddEndian<T, BETag>::type>;
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using float_be = AddEndian<float, BETag>::type;
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using double_be = AddEndian<double, BETag>::type;
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@ -39,10 +39,10 @@ struct CommandHeader {
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union {
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u32_le raw_low;
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BitField<0, 16, CommandType> type;
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BitField<16, 4, u32_le> num_buf_x_descriptors;
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BitField<20, 4, u32_le> num_buf_a_descriptors;
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BitField<24, 4, u32_le> num_buf_b_descriptors;
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BitField<28, 4, u32_le> num_buf_w_descriptors;
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BitField<16, 4, u32> num_buf_x_descriptors;
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BitField<20, 4, u32> num_buf_a_descriptors;
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BitField<24, 4, u32> num_buf_b_descriptors;
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BitField<28, 4, u32> num_buf_w_descriptors;
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};
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enum class BufferDescriptorCFlag : u32 {
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@ -53,28 +53,28 @@ struct CommandHeader {
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union {
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u32_le raw_high;
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BitField<0, 10, u32_le> data_size;
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BitField<0, 10, u32> data_size;
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BitField<10, 4, BufferDescriptorCFlag> buf_c_descriptor_flags;
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BitField<31, 1, u32_le> enable_handle_descriptor;
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BitField<31, 1, u32> enable_handle_descriptor;
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};
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};
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static_assert(sizeof(CommandHeader) == 8, "CommandHeader size is incorrect");
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union HandleDescriptorHeader {
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u32_le raw_high;
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BitField<0, 1, u32_le> send_current_pid;
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BitField<1, 4, u32_le> num_handles_to_copy;
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BitField<5, 4, u32_le> num_handles_to_move;
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BitField<0, 1, u32> send_current_pid;
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BitField<1, 4, u32> num_handles_to_copy;
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BitField<5, 4, u32> num_handles_to_move;
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};
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static_assert(sizeof(HandleDescriptorHeader) == 4, "HandleDescriptorHeader size is incorrect");
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struct BufferDescriptorX {
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union {
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BitField<0, 6, u32_le> counter_bits_0_5;
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BitField<6, 3, u32_le> address_bits_36_38;
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BitField<9, 3, u32_le> counter_bits_9_11;
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BitField<12, 4, u32_le> address_bits_32_35;
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BitField<16, 16, u32_le> size;
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BitField<0, 6, u32> counter_bits_0_5;
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BitField<6, 3, u32> address_bits_36_38;
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BitField<9, 3, u32> counter_bits_9_11;
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BitField<12, 4, u32> address_bits_32_35;
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BitField<16, 16, u32> size;
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};
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u32_le address_bits_0_31;
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@ -103,10 +103,10 @@ struct BufferDescriptorABW {
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u32_le address_bits_0_31;
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union {
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BitField<0, 2, u32_le> flags;
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BitField<2, 3, u32_le> address_bits_36_38;
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BitField<24, 4, u32_le> size_bits_32_35;
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BitField<28, 4, u32_le> address_bits_32_35;
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BitField<0, 2, u32> flags;
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BitField<2, 3, u32> address_bits_36_38;
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BitField<24, 4, u32> size_bits_32_35;
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BitField<28, 4, u32> address_bits_32_35;
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};
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VAddr Address() const {
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@ -128,8 +128,8 @@ struct BufferDescriptorC {
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u32_le address_bits_0_31;
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union {
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BitField<0, 16, u32_le> address_bits_32_47;
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BitField<16, 16, u32_le> size;
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BitField<0, 16, u32> address_bits_32_47;
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BitField<16, 16, u32> size;
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};
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VAddr Address() const {
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@ -167,8 +167,8 @@ struct DomainMessageHeader {
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struct {
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union {
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BitField<0, 8, CommandType> command;
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BitField<8, 8, u32_le> input_object_count;
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BitField<16, 16, u32_le> size;
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BitField<8, 8, u32> input_object_count;
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BitField<16, 16, u32> size;
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};
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u32_le object_id;
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INSERT_PADDING_WORDS(2);
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@ -41,20 +41,20 @@ private:
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struct PadState {
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union {
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u32_le raw{};
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BitField<0, 1, u32_le> a;
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BitField<1, 1, u32_le> b;
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BitField<2, 1, u32_le> x;
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BitField<3, 1, u32_le> y;
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BitField<4, 1, u32_le> l;
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BitField<5, 1, u32_le> r;
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BitField<6, 1, u32_le> zl;
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BitField<7, 1, u32_le> zr;
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BitField<8, 1, u32_le> plus;
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BitField<9, 1, u32_le> minus;
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BitField<10, 1, u32_le> d_left;
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BitField<11, 1, u32_le> d_up;
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BitField<12, 1, u32_le> d_right;
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BitField<13, 1, u32_le> d_down;
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BitField<0, 1, u32> a;
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BitField<1, 1, u32> b;
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BitField<2, 1, u32> x;
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BitField<3, 1, u32> y;
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BitField<4, 1, u32> l;
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BitField<5, 1, u32> r;
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BitField<6, 1, u32> zl;
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BitField<7, 1, u32> zr;
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BitField<8, 1, u32> plus;
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BitField<9, 1, u32> minus;
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BitField<10, 1, u32> d_left;
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BitField<11, 1, u32> d_up;
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BitField<12, 1, u32> d_right;
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BitField<13, 1, u32> d_down;
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};
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};
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static_assert(sizeof(PadState) == 0x4, "PadState is an invalid size");
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@ -62,7 +62,7 @@ private:
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struct Attributes {
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union {
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u32_le raw{};
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BitField<0, 1, u32_le> connected;
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BitField<0, 1, u32> connected;
|
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};
|
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};
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static_assert(sizeof(Attributes) == 0x4, "Attributes is an invalid size");
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@ -39,13 +39,13 @@ public:
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union {
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u32_le raw{};
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BitField<0, 1, u32_le> pro_controller;
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BitField<1, 1, u32_le> handheld;
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BitField<2, 1, u32_le> joycon_dual;
|
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BitField<3, 1, u32_le> joycon_left;
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BitField<4, 1, u32_le> joycon_right;
|
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BitField<0, 1, u32> pro_controller;
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BitField<1, 1, u32> handheld;
|
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BitField<2, 1, u32> joycon_dual;
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BitField<3, 1, u32> joycon_left;
|
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BitField<4, 1, u32> joycon_right;
|
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|
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BitField<6, 1, u32_le> pokeball; // TODO(ogniK): Confirm when possible
|
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BitField<6, 1, u32> pokeball; // TODO(ogniK): Confirm when possible
|
||||
};
|
||||
};
|
||||
static_assert(sizeof(NPadType) == 4, "NPadType is an invalid size");
|
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|
|
@ -150,43 +150,43 @@ private:
|
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union {
|
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u64_le raw{};
|
||||
// Button states
|
||||
BitField<0, 1, u64_le> a;
|
||||
BitField<1, 1, u64_le> b;
|
||||
BitField<2, 1, u64_le> x;
|
||||
BitField<3, 1, u64_le> y;
|
||||
BitField<4, 1, u64_le> l_stick;
|
||||
BitField<5, 1, u64_le> r_stick;
|
||||
BitField<6, 1, u64_le> l;
|
||||
BitField<7, 1, u64_le> r;
|
||||
BitField<8, 1, u64_le> zl;
|
||||
BitField<9, 1, u64_le> zr;
|
||||
BitField<10, 1, u64_le> plus;
|
||||
BitField<11, 1, u64_le> minus;
|
||||
BitField<0, 1, u64> a;
|
||||
BitField<1, 1, u64> b;
|
||||
BitField<2, 1, u64> x;
|
||||
BitField<3, 1, u64> y;
|
||||
BitField<4, 1, u64> l_stick;
|
||||
BitField<5, 1, u64> r_stick;
|
||||
BitField<6, 1, u64> l;
|
||||
BitField<7, 1, u64> r;
|
||||
BitField<8, 1, u64> zl;
|
||||
BitField<9, 1, u64> zr;
|
||||
BitField<10, 1, u64> plus;
|
||||
BitField<11, 1, u64> minus;
|
||||
|
||||
// D-Pad
|
||||
BitField<12, 1, u64_le> d_left;
|
||||
BitField<13, 1, u64_le> d_up;
|
||||
BitField<14, 1, u64_le> d_right;
|
||||
BitField<15, 1, u64_le> d_down;
|
||||
BitField<12, 1, u64> d_left;
|
||||
BitField<13, 1, u64> d_up;
|
||||
BitField<14, 1, u64> d_right;
|
||||
BitField<15, 1, u64> d_down;
|
||||
|
||||
// Left JoyStick
|
||||
BitField<16, 1, u64_le> l_stick_left;
|
||||
BitField<17, 1, u64_le> l_stick_up;
|
||||
BitField<18, 1, u64_le> l_stick_right;
|
||||
BitField<19, 1, u64_le> l_stick_down;
|
||||
BitField<16, 1, u64> l_stick_left;
|
||||
BitField<17, 1, u64> l_stick_up;
|
||||
BitField<18, 1, u64> l_stick_right;
|
||||
BitField<19, 1, u64> l_stick_down;
|
||||
|
||||
// Right JoyStick
|
||||
BitField<20, 1, u64_le> r_stick_left;
|
||||
BitField<21, 1, u64_le> r_stick_up;
|
||||
BitField<22, 1, u64_le> r_stick_right;
|
||||
BitField<23, 1, u64_le> r_stick_down;
|
||||
BitField<20, 1, u64> r_stick_left;
|
||||
BitField<21, 1, u64> r_stick_up;
|
||||
BitField<22, 1, u64> r_stick_right;
|
||||
BitField<23, 1, u64> r_stick_down;
|
||||
|
||||
// Not always active?
|
||||
BitField<24, 1, u64_le> left_sl;
|
||||
BitField<25, 1, u64_le> left_sr;
|
||||
BitField<24, 1, u64> left_sl;
|
||||
BitField<25, 1, u64> left_sr;
|
||||
|
||||
BitField<26, 1, u64_le> right_sl;
|
||||
BitField<27, 1, u64_le> right_sr;
|
||||
BitField<26, 1, u64> right_sl;
|
||||
BitField<27, 1, u64> right_sr;
|
||||
};
|
||||
};
|
||||
static_assert(sizeof(ControllerPadState) == 8, "ControllerPadState is an invalid size");
|
||||
|
|
@ -200,12 +200,12 @@ private:
|
|||
struct ConnectionState {
|
||||
union {
|
||||
u32_le raw{};
|
||||
BitField<0, 1, u32_le> IsConnected;
|
||||
BitField<1, 1, u32_le> IsWired;
|
||||
BitField<2, 1, u32_le> IsLeftJoyConnected;
|
||||
BitField<3, 1, u32_le> IsLeftJoyWired;
|
||||
BitField<4, 1, u32_le> IsRightJoyConnected;
|
||||
BitField<5, 1, u32_le> IsRightJoyWired;
|
||||
BitField<0, 1, u32> IsConnected;
|
||||
BitField<1, 1, u32> IsWired;
|
||||
BitField<2, 1, u32> IsLeftJoyConnected;
|
||||
BitField<3, 1, u32> IsLeftJoyWired;
|
||||
BitField<4, 1, u32> IsRightJoyConnected;
|
||||
BitField<5, 1, u32> IsRightJoyWired;
|
||||
};
|
||||
};
|
||||
static_assert(sizeof(ConnectionState) == 4, "ConnectionState is an invalid size");
|
||||
|
|
@ -240,23 +240,23 @@ private:
|
|||
struct NPadProperties {
|
||||
union {
|
||||
s64_le raw{};
|
||||
BitField<11, 1, s64_le> is_vertical;
|
||||
BitField<12, 1, s64_le> is_horizontal;
|
||||
BitField<13, 1, s64_le> use_plus;
|
||||
BitField<14, 1, s64_le> use_minus;
|
||||
BitField<11, 1, s64> is_vertical;
|
||||
BitField<12, 1, s64> is_horizontal;
|
||||
BitField<13, 1, s64> use_plus;
|
||||
BitField<14, 1, s64> use_minus;
|
||||
};
|
||||
};
|
||||
|
||||
struct NPadDevice {
|
||||
union {
|
||||
u32_le raw{};
|
||||
BitField<0, 1, s32_le> pro_controller;
|
||||
BitField<1, 1, s32_le> handheld;
|
||||
BitField<2, 1, s32_le> handheld_left;
|
||||
BitField<3, 1, s32_le> handheld_right;
|
||||
BitField<4, 1, s32_le> joycon_left;
|
||||
BitField<5, 1, s32_le> joycon_right;
|
||||
BitField<6, 1, s32_le> pokeball;
|
||||
BitField<0, 1, s32> pro_controller;
|
||||
BitField<1, 1, s32> handheld;
|
||||
BitField<2, 1, s32> handheld_left;
|
||||
BitField<3, 1, s32> handheld_right;
|
||||
BitField<4, 1, s32> joycon_left;
|
||||
BitField<5, 1, s32> joycon_right;
|
||||
BitField<6, 1, s32> pokeball;
|
||||
};
|
||||
};
|
||||
|
||||
|
|
|
|||
|
|
@ -33,8 +33,8 @@ private:
|
|||
struct Attributes {
|
||||
union {
|
||||
u32 raw{};
|
||||
BitField<0, 1, u32_le> start_touch;
|
||||
BitField<1, 1, u32_le> end_touch;
|
||||
BitField<0, 1, u32> start_touch;
|
||||
BitField<1, 1, u32> end_touch;
|
||||
};
|
||||
};
|
||||
static_assert(sizeof(Attributes) == 0x4, "Attributes is an invalid size");
|
||||
|
|
|
|||
|
|
@ -42,7 +42,7 @@ private:
|
|||
union {
|
||||
BitField<0, 16, Flags> flags;
|
||||
BitField<16, 8, Severity> severity;
|
||||
BitField<24, 8, u32_le> verbosity;
|
||||
BitField<24, 8, u32> verbosity;
|
||||
};
|
||||
u32_le payload_size;
|
||||
|
||||
|
|
|
|||
|
|
@ -19,11 +19,11 @@ public:
|
|||
virtual ~nvdevice() = default;
|
||||
union Ioctl {
|
||||
u32_le raw;
|
||||
BitField<0, 8, u32_le> cmd;
|
||||
BitField<8, 8, u32_le> group;
|
||||
BitField<16, 14, u32_le> length;
|
||||
BitField<30, 1, u32_le> is_in;
|
||||
BitField<31, 1, u32_le> is_out;
|
||||
BitField<0, 8, u32> cmd;
|
||||
BitField<8, 8, u32> group;
|
||||
BitField<16, 14, u32> length;
|
||||
BitField<30, 1, u32> is_in;
|
||||
BitField<31, 1, u32> is_out;
|
||||
};
|
||||
|
||||
/**
|
||||
|
|
|
|||
|
|
@ -1,4 +1,5 @@
|
|||
add_executable(tests
|
||||
common/bit_field.cpp
|
||||
common/param_package.cpp
|
||||
common/ring_buffer.cpp
|
||||
core/arm/arm_test_common.cpp
|
||||
|
|
|
|||
90
src/tests/common/bit_field.cpp
Normal file
90
src/tests/common/bit_field.cpp
Normal file
|
|
@ -0,0 +1,90 @@
|
|||
// Copyright 2019 Citra Emulator Project
|
||||
// Licensed under GPLv2 or any later version
|
||||
// Refer to the license.txt file included.
|
||||
|
||||
#include <array>
|
||||
#include <cstring>
|
||||
#include <type_traits>
|
||||
#include <catch2/catch.hpp>
|
||||
#include "common/bit_field.h"
|
||||
|
||||
TEST_CASE("BitField", "[common]") {
|
||||
enum class TestEnum : u32 {
|
||||
A = 0b10111101,
|
||||
B = 0b10101110,
|
||||
C = 0b00001111,
|
||||
};
|
||||
|
||||
union LEBitField {
|
||||
u32_le raw;
|
||||
BitField<0, 6, u32> a;
|
||||
BitField<6, 4, s32> b;
|
||||
BitField<10, 8, TestEnum> c;
|
||||
BitField<18, 14, u32> d;
|
||||
} le_bitfield;
|
||||
|
||||
union BEBitField {
|
||||
u32_be raw;
|
||||
BitFieldBE<0, 6, u32> a;
|
||||
BitFieldBE<6, 4, s32> b;
|
||||
BitFieldBE<10, 8, TestEnum> c;
|
||||
BitFieldBE<18, 14, u32> d;
|
||||
} be_bitfield;
|
||||
|
||||
static_assert(sizeof(LEBitField) == sizeof(u32));
|
||||
static_assert(sizeof(BEBitField) == sizeof(u32));
|
||||
static_assert(std::is_trivially_copyable_v<LEBitField>);
|
||||
static_assert(std::is_trivially_copyable_v<BEBitField>);
|
||||
|
||||
std::array<u8, 4> raw{{
|
||||
0b01101100,
|
||||
0b11110110,
|
||||
0b10111010,
|
||||
0b11101100,
|
||||
}};
|
||||
|
||||
std::memcpy(&le_bitfield, &raw, sizeof(raw));
|
||||
std::memcpy(&be_bitfield, &raw, sizeof(raw));
|
||||
|
||||
// bit fields: 11101100101110'10111101'1001'101100
|
||||
REQUIRE(le_bitfield.raw == 0b11101100'10111010'11110110'01101100);
|
||||
REQUIRE(le_bitfield.a == 0b101100);
|
||||
REQUIRE(le_bitfield.b == -7); // 1001 as two's complement
|
||||
REQUIRE(le_bitfield.c == TestEnum::A);
|
||||
REQUIRE(le_bitfield.d == 0b11101100101110);
|
||||
|
||||
le_bitfield.a.Assign(0b000111);
|
||||
le_bitfield.b.Assign(-1);
|
||||
le_bitfield.c.Assign(TestEnum::C);
|
||||
le_bitfield.d.Assign(0b01010101010101);
|
||||
std::memcpy(&raw, &le_bitfield, sizeof(raw));
|
||||
// bit fields: 01010101010101'00001111'1111'000111
|
||||
REQUIRE(le_bitfield.raw == 0b01010101'01010100'00111111'11000111);
|
||||
REQUIRE(raw == std::array<u8, 4>{{
|
||||
0b11000111,
|
||||
0b00111111,
|
||||
0b01010100,
|
||||
0b01010101,
|
||||
}});
|
||||
|
||||
// bit fields: 01101100111101'10101110'1011'101100
|
||||
REQUIRE(be_bitfield.raw == 0b01101100'11110110'10111010'11101100);
|
||||
REQUIRE(be_bitfield.a == 0b101100);
|
||||
REQUIRE(be_bitfield.b == -5); // 1011 as two's complement
|
||||
REQUIRE(be_bitfield.c == TestEnum::B);
|
||||
REQUIRE(be_bitfield.d == 0b01101100111101);
|
||||
|
||||
be_bitfield.a.Assign(0b000111);
|
||||
be_bitfield.b.Assign(-1);
|
||||
be_bitfield.c.Assign(TestEnum::C);
|
||||
be_bitfield.d.Assign(0b01010101010101);
|
||||
std::memcpy(&raw, &be_bitfield, sizeof(raw));
|
||||
// bit fields: 01010101010101'00001111'1111'000111
|
||||
REQUIRE(be_bitfield.raw == 0b01010101'01010100'00111111'11000111);
|
||||
REQUIRE(raw == std::array<u8, 4>{{
|
||||
0b01010101,
|
||||
0b01010100,
|
||||
0b00111111,
|
||||
0b11000111,
|
||||
}});
|
||||
}
|
||||
Loading…
Reference in a new issue