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Merge pull request #4327 from lioncash/desig2
address_space_info: Make use of designated initializers
This commit is contained in:
Rodrigo Locatti
GitHub
commit
104c523d3d
@ -29,40 +29,39 @@ enum : u64 {
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// clang-format off
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constexpr std::array<AddressSpaceInfo, 13> AddressSpaceInfos{{
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{ 32 /*bit_width*/, Size_2_MB /*addr*/, Size_1_GB - Size_2_MB /*size*/, AddressSpaceInfo::Type::Is32Bit, },
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{ 32 /*bit_width*/, Size_1_GB /*addr*/, Size_4_GB - Size_1_GB /*size*/, AddressSpaceInfo::Type::Small64Bit, },
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{ 32 /*bit_width*/, Invalid /*addr*/, Size_1_GB /*size*/, AddressSpaceInfo::Type::Heap, },
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{ 32 /*bit_width*/, Invalid /*addr*/, Size_1_GB /*size*/, AddressSpaceInfo::Type::Alias, },
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{ 36 /*bit_width*/, Size_128_MB /*addr*/, Size_2_GB - Size_128_MB /*size*/, AddressSpaceInfo::Type::Is32Bit, },
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{ 36 /*bit_width*/, Size_2_GB /*addr*/, Size_64_GB - Size_2_GB /*size*/, AddressSpaceInfo::Type::Small64Bit, },
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{ 36 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Heap, },
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{ 36 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Alias, },
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{ 39 /*bit_width*/, Size_128_MB /*addr*/, Size_512_GB - Size_128_MB /*size*/, AddressSpaceInfo::Type::Large64Bit, },
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{ 39 /*bit_width*/, Invalid /*addr*/, Size_64_GB /*size*/, AddressSpaceInfo::Type::Is32Bit },
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{ 39 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Heap, },
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{ 39 /*bit_width*/, Invalid /*addr*/, Size_64_GB /*size*/, AddressSpaceInfo::Type::Alias, },
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{ 39 /*bit_width*/, Invalid /*addr*/, Size_2_GB /*size*/, AddressSpaceInfo::Type::Stack, },
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{ .bit_width = 32, .address = Size_2_MB , .size = Size_1_GB - Size_2_MB , .type = AddressSpaceInfo::Type::Is32Bit, },
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{ .bit_width = 32, .address = Size_1_GB , .size = Size_4_GB - Size_1_GB , .type = AddressSpaceInfo::Type::Small64Bit, },
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{ .bit_width = 32, .address = Invalid , .size = Size_1_GB , .type = AddressSpaceInfo::Type::Heap, },
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{ .bit_width = 32, .address = Invalid , .size = Size_1_GB , .type = AddressSpaceInfo::Type::Alias, },
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{ .bit_width = 36, .address = Size_128_MB, .size = Size_2_GB - Size_128_MB, .type = AddressSpaceInfo::Type::Is32Bit, },
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{ .bit_width = 36, .address = Size_2_GB , .size = Size_64_GB - Size_2_GB , .type = AddressSpaceInfo::Type::Small64Bit, },
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{ .bit_width = 36, .address = Invalid , .size = Size_6_GB , .type = AddressSpaceInfo::Type::Heap, },
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{ .bit_width = 36, .address = Invalid , .size = Size_6_GB , .type = AddressSpaceInfo::Type::Alias, },
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{ .bit_width = 39, .address = Size_128_MB, .size = Size_512_GB - Size_128_MB, .type = AddressSpaceInfo::Type::Large64Bit, },
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{ .bit_width = 39, .address = Invalid , .size = Size_64_GB , .type = AddressSpaceInfo::Type::Is32Bit },
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{ .bit_width = 39, .address = Invalid , .size = Size_6_GB , .type = AddressSpaceInfo::Type::Heap, },
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{ .bit_width = 39, .address = Invalid , .size = Size_64_GB , .type = AddressSpaceInfo::Type::Alias, },
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{ .bit_width = 39, .address = Invalid , .size = Size_2_GB , .type = AddressSpaceInfo::Type::Stack, },
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}};
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// clang-format on
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constexpr bool IsAllowedIndexForAddress(std::size_t index) {
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return index < std::size(AddressSpaceInfos) && AddressSpaceInfos[index].GetAddress() != Invalid;
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return index < AddressSpaceInfos.size() && AddressSpaceInfos[index].address != Invalid;
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}
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constexpr std::array<std::size_t, static_cast<std::size_t>(AddressSpaceInfo::Type::Count)>
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AddressSpaceIndices32Bit{
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0, 1, 0, 2, 0, 3,
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};
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using IndexArray = std::array<std::size_t, static_cast<std::size_t>(AddressSpaceInfo::Type::Count)>;
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constexpr std::array<std::size_t, static_cast<std::size_t>(AddressSpaceInfo::Type::Count)>
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AddressSpaceIndices36Bit{
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4, 5, 4, 6, 4, 7,
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};
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constexpr IndexArray AddressSpaceIndices32Bit{
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0, 1, 0, 2, 0, 3,
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};
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constexpr std::array<std::size_t, static_cast<std::size_t>(AddressSpaceInfo::Type::Count)>
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AddressSpaceIndices39Bit{
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9, 8, 8, 10, 12, 11,
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};
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constexpr IndexArray AddressSpaceIndices36Bit{
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4, 5, 4, 6, 4, 7,
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};
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constexpr IndexArray AddressSpaceIndices39Bit{
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9, 8, 8, 10, 12, 11,
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};
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constexpr bool IsAllowed32BitType(AddressSpaceInfo::Type type) {
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return type < AddressSpaceInfo::Type::Count && type != AddressSpaceInfo::Type::Large64Bit &&
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@ -80,37 +79,37 @@ constexpr bool IsAllowed39BitType(AddressSpaceInfo::Type type) {
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} // namespace
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u64 AddressSpaceInfo::GetAddressSpaceStart(std::size_t width, AddressSpaceInfo::Type type) {
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u64 AddressSpaceInfo::GetAddressSpaceStart(std::size_t width, Type type) {
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const std::size_t index{static_cast<std::size_t>(type)};
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switch (width) {
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case 32:
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ASSERT(IsAllowed32BitType(type));
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ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices32Bit[index]));
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return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].GetAddress();
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return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].address;
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case 36:
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ASSERT(IsAllowed36BitType(type));
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ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices36Bit[index]));
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return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].GetAddress();
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return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].address;
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case 39:
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ASSERT(IsAllowed39BitType(type));
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ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices39Bit[index]));
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return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].GetAddress();
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return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].address;
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}
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UNREACHABLE();
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}
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std::size_t AddressSpaceInfo::GetAddressSpaceSize(std::size_t width, AddressSpaceInfo::Type type) {
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std::size_t AddressSpaceInfo::GetAddressSpaceSize(std::size_t width, Type type) {
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const std::size_t index{static_cast<std::size_t>(type)};
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switch (width) {
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case 32:
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ASSERT(IsAllowed32BitType(type));
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return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].GetSize();
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return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].size;
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case 36:
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ASSERT(IsAllowed36BitType(type));
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return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].GetSize();
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return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].size;
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case 39:
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ASSERT(IsAllowed39BitType(type));
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return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].GetSize();
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return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].size;
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}
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UNREACHABLE();
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}
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@ -11,8 +11,7 @@
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namespace Kernel::Memory {
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class AddressSpaceInfo final : NonCopyable {
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public:
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struct AddressSpaceInfo final {
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enum class Type : u32 {
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Is32Bit = 0,
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Small64Bit = 1,
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@ -23,31 +22,13 @@ public:
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Count,
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};
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private:
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std::size_t bit_width{};
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std::size_t addr{};
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std::size_t size{};
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Type type{};
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public:
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static u64 GetAddressSpaceStart(std::size_t width, Type type);
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static std::size_t GetAddressSpaceSize(std::size_t width, Type type);
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constexpr AddressSpaceInfo(std::size_t bit_width, std::size_t addr, std::size_t size, Type type)
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: bit_width{bit_width}, addr{addr}, size{size}, type{type} {}
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constexpr std::size_t GetWidth() const {
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return bit_width;
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}
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constexpr std::size_t GetAddress() const {
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return addr;
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}
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constexpr std::size_t GetSize() const {
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return size;
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}
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constexpr Type GetType() const {
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return type;
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}
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const std::size_t bit_width{};
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const std::size_t address{};
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const std::size_t size{};
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const Type type{};
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};
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} // namespace Kernel::Memory
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