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address_space_info: Make use of designated initializers

We can alter the structure so that we can use designated initializers in
the array, eliminating the comments that indicate their field names.
This commit is contained in:
Lioncash 2020-07-13 10:33:36 -04:00
parent b2305dcee0
commit c3eb42de65
2 changed files with 27 additions and 46 deletions

View File

@ -29,24 +29,24 @@ enum : u64 {
// clang-format off // clang-format off
constexpr std::array<AddressSpaceInfo, 13> AddressSpaceInfos{{ constexpr std::array<AddressSpaceInfo, 13> AddressSpaceInfos{{
{ 32 /*bit_width*/, Size_2_MB /*addr*/, Size_1_GB - Size_2_MB /*size*/, AddressSpaceInfo::Type::Is32Bit, }, { .bit_width = 32, .address = Size_2_MB , .size = Size_1_GB - Size_2_MB , .type = AddressSpaceInfo::Type::Is32Bit, },
{ 32 /*bit_width*/, Size_1_GB /*addr*/, Size_4_GB - Size_1_GB /*size*/, AddressSpaceInfo::Type::Small64Bit, }, { .bit_width = 32, .address = Size_1_GB , .size = Size_4_GB - Size_1_GB , .type = AddressSpaceInfo::Type::Small64Bit, },
{ 32 /*bit_width*/, Invalid /*addr*/, Size_1_GB /*size*/, AddressSpaceInfo::Type::Heap, }, { .bit_width = 32, .address = Invalid , .size = Size_1_GB , .type = AddressSpaceInfo::Type::Heap, },
{ 32 /*bit_width*/, Invalid /*addr*/, Size_1_GB /*size*/, AddressSpaceInfo::Type::Alias, }, { .bit_width = 32, .address = Invalid , .size = Size_1_GB , .type = AddressSpaceInfo::Type::Alias, },
{ 36 /*bit_width*/, Size_128_MB /*addr*/, Size_2_GB - Size_128_MB /*size*/, AddressSpaceInfo::Type::Is32Bit, }, { .bit_width = 36, .address = Size_128_MB, .size = Size_2_GB - Size_128_MB, .type = AddressSpaceInfo::Type::Is32Bit, },
{ 36 /*bit_width*/, Size_2_GB /*addr*/, Size_64_GB - Size_2_GB /*size*/, AddressSpaceInfo::Type::Small64Bit, }, { .bit_width = 36, .address = Size_2_GB , .size = Size_64_GB - Size_2_GB , .type = AddressSpaceInfo::Type::Small64Bit, },
{ 36 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Heap, }, { .bit_width = 36, .address = Invalid , .size = Size_6_GB , .type = AddressSpaceInfo::Type::Heap, },
{ 36 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Alias, }, { .bit_width = 36, .address = Invalid , .size = Size_6_GB , .type = AddressSpaceInfo::Type::Alias, },
{ 39 /*bit_width*/, Size_128_MB /*addr*/, Size_512_GB - Size_128_MB /*size*/, AddressSpaceInfo::Type::Large64Bit, }, { .bit_width = 39, .address = Size_128_MB, .size = Size_512_GB - Size_128_MB, .type = AddressSpaceInfo::Type::Large64Bit, },
{ 39 /*bit_width*/, Invalid /*addr*/, Size_64_GB /*size*/, AddressSpaceInfo::Type::Is32Bit }, { .bit_width = 39, .address = Invalid , .size = Size_64_GB , .type = AddressSpaceInfo::Type::Is32Bit },
{ 39 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Heap, }, { .bit_width = 39, .address = Invalid , .size = Size_6_GB , .type = AddressSpaceInfo::Type::Heap, },
{ 39 /*bit_width*/, Invalid /*addr*/, Size_64_GB /*size*/, AddressSpaceInfo::Type::Alias, }, { .bit_width = 39, .address = Invalid , .size = Size_64_GB , .type = AddressSpaceInfo::Type::Alias, },
{ 39 /*bit_width*/, Invalid /*addr*/, Size_2_GB /*size*/, AddressSpaceInfo::Type::Stack, }, { .bit_width = 39, .address = Invalid , .size = Size_2_GB , .type = AddressSpaceInfo::Type::Stack, },
}}; }};
// clang-format on // clang-format on
constexpr bool IsAllowedIndexForAddress(std::size_t index) { constexpr bool IsAllowedIndexForAddress(std::size_t index) {
return index < std::size(AddressSpaceInfos) && AddressSpaceInfos[index].GetAddress() != Invalid; return index < AddressSpaceInfos.size() && AddressSpaceInfos[index].address != Invalid;
} }
constexpr std::array<std::size_t, static_cast<std::size_t>(AddressSpaceInfo::Type::Count)> constexpr std::array<std::size_t, static_cast<std::size_t>(AddressSpaceInfo::Type::Count)>
@ -80,37 +80,37 @@ constexpr bool IsAllowed39BitType(AddressSpaceInfo::Type type) {
} // namespace } // namespace
u64 AddressSpaceInfo::GetAddressSpaceStart(std::size_t width, AddressSpaceInfo::Type type) { u64 AddressSpaceInfo::GetAddressSpaceStart(std::size_t width, Type type) {
const std::size_t index{static_cast<std::size_t>(type)}; const std::size_t index{static_cast<std::size_t>(type)};
switch (width) { switch (width) {
case 32: case 32:
ASSERT(IsAllowed32BitType(type)); ASSERT(IsAllowed32BitType(type));
ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices32Bit[index])); ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices32Bit[index]));
return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].GetAddress(); return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].address;
case 36: case 36:
ASSERT(IsAllowed36BitType(type)); ASSERT(IsAllowed36BitType(type));
ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices36Bit[index])); ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices36Bit[index]));
return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].GetAddress(); return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].address;
case 39: case 39:
ASSERT(IsAllowed39BitType(type)); ASSERT(IsAllowed39BitType(type));
ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices39Bit[index])); ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices39Bit[index]));
return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].GetAddress(); return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].address;
} }
UNREACHABLE(); UNREACHABLE();
} }
std::size_t AddressSpaceInfo::GetAddressSpaceSize(std::size_t width, AddressSpaceInfo::Type type) { std::size_t AddressSpaceInfo::GetAddressSpaceSize(std::size_t width, Type type) {
const std::size_t index{static_cast<std::size_t>(type)}; const std::size_t index{static_cast<std::size_t>(type)};
switch (width) { switch (width) {
case 32: case 32:
ASSERT(IsAllowed32BitType(type)); ASSERT(IsAllowed32BitType(type));
return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].GetSize(); return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].size;
case 36: case 36:
ASSERT(IsAllowed36BitType(type)); ASSERT(IsAllowed36BitType(type));
return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].GetSize(); return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].size;
case 39: case 39:
ASSERT(IsAllowed39BitType(type)); ASSERT(IsAllowed39BitType(type));
return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].GetSize(); return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].size;
} }
UNREACHABLE(); UNREACHABLE();
} }

View File

@ -11,8 +11,7 @@
namespace Kernel::Memory { namespace Kernel::Memory {
class AddressSpaceInfo final : NonCopyable { struct AddressSpaceInfo final {
public:
enum class Type : u32 { enum class Type : u32 {
Is32Bit = 0, Is32Bit = 0,
Small64Bit = 1, Small64Bit = 1,
@ -23,31 +22,13 @@ public:
Count, Count,
}; };
private:
std::size_t bit_width{};
std::size_t addr{};
std::size_t size{};
Type type{};
public:
static u64 GetAddressSpaceStart(std::size_t width, Type type); static u64 GetAddressSpaceStart(std::size_t width, Type type);
static std::size_t GetAddressSpaceSize(std::size_t width, Type type); static std::size_t GetAddressSpaceSize(std::size_t width, Type type);
constexpr AddressSpaceInfo(std::size_t bit_width, std::size_t addr, std::size_t size, Type type) const std::size_t bit_width{};
: bit_width{bit_width}, addr{addr}, size{size}, type{type} {} const std::size_t address{};
const std::size_t size{};
constexpr std::size_t GetWidth() const { const Type type{};
return bit_width;
}
constexpr std::size_t GetAddress() const {
return addr;
}
constexpr std::size_t GetSize() const {
return size;
}
constexpr Type GetType() const {
return type;
}
}; };
} // namespace Kernel::Memory } // namespace Kernel::Memory