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-rw-r--r--src/core/hle/kernel/memory/address_space_info.cpp113
-rw-r--r--src/core/hle/kernel/memory/address_space_info.h51
2 files changed, 164 insertions, 0 deletions
diff --git a/src/core/hle/kernel/memory/address_space_info.cpp b/src/core/hle/kernel/memory/address_space_info.cpp
new file mode 100644
index 000000000..67e397a0d
--- /dev/null
+++ b/src/core/hle/kernel/memory/address_space_info.cpp
@@ -0,0 +1,113 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#include <array>
+
+#include "common/assert.h"
+#include "core/hle/kernel/memory/address_space_info.h"
+
+namespace Kernel::Memory {
+
+namespace {
+
+constexpr std::size_t Size_1_MB{0x100000};
+constexpr std::size_t Size_2_MB{2 * Size_1_MB};
+constexpr std::size_t Size_128_MB{128 * Size_1_MB};
+constexpr std::size_t Size_1_GB{0x40000000};
+constexpr std::size_t Size_2_GB{2 * Size_1_GB};
+constexpr std::size_t Size_4_GB{4 * Size_1_GB};
+constexpr std::size_t Size_6_GB{6 * Size_1_GB};
+constexpr std::size_t Size_64_GB{64 * Size_1_GB};
+constexpr std::size_t Size_512_GB{512 * Size_1_GB};
+constexpr u64 Invalid{std::numeric_limits<u64>::max()};
+
+// clang-format off
+constexpr std::array<AddressSpaceInfo, 13> AddressSpaceInfos{{
+ { 32 /*bit_width*/, Size_2_MB /*addr*/, Size_1_GB - Size_2_MB /*size*/, AddressSpaceInfo::Type::Is32Bit, },
+ { 32 /*bit_width*/, Size_1_GB /*addr*/, Size_4_GB - Size_1_GB /*size*/, AddressSpaceInfo::Type::Small64Bit, },
+ { 32 /*bit_width*/, Invalid /*addr*/, Size_1_GB /*size*/, AddressSpaceInfo::Type::Heap, },
+ { 32 /*bit_width*/, Invalid /*addr*/, Size_1_GB /*size*/, AddressSpaceInfo::Type::Alias, },
+ { 36 /*bit_width*/, Size_128_MB /*addr*/, Size_2_GB - Size_128_MB /*size*/, AddressSpaceInfo::Type::Is32Bit, },
+ { 36 /*bit_width*/, Size_2_GB /*addr*/, Size_64_GB - Size_2_GB /*size*/, AddressSpaceInfo::Type::Small64Bit, },
+ { 36 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Heap, },
+ { 36 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Alias, },
+ { 39 /*bit_width*/, Size_128_MB /*addr*/, Size_512_GB - Size_128_MB /*size*/, AddressSpaceInfo::Type::Large64Bit, },
+ { 39 /*bit_width*/, Invalid /*addr*/, Size_64_GB /*size*/, AddressSpaceInfo::Type::Is32Bit },
+ { 39 /*bit_width*/, Invalid /*addr*/, Size_6_GB /*size*/, AddressSpaceInfo::Type::Heap, },
+ { 39 /*bit_width*/, Invalid /*addr*/, Size_64_GB /*size*/, AddressSpaceInfo::Type::Alias, },
+ { 39 /*bit_width*/, Invalid /*addr*/, Size_2_GB /*size*/, AddressSpaceInfo::Type::Stack, },
+}};
+// clang-format on
+
+constexpr bool IsAllowedIndexForAddress(std::size_t index) {
+ return index < std::size(AddressSpaceInfos) && AddressSpaceInfos[index].GetAddress() != Invalid;
+}
+
+constexpr std::size_t
+ AddressSpaceIndices32Bit[static_cast<std::size_t>(AddressSpaceInfo::Type::Count)]{
+ 0, 1, 0, 2, 0, 3,
+ };
+
+constexpr std::size_t
+ AddressSpaceIndices36Bit[static_cast<std::size_t>(AddressSpaceInfo::Type::Count)]{
+ 4, 5, 4, 6, 4, 7,
+ };
+
+constexpr std::size_t
+ AddressSpaceIndices39Bit[static_cast<std::size_t>(AddressSpaceInfo::Type::Count)]{
+ 9, 8, 8, 10, 12, 11,
+ };
+
+constexpr bool IsAllowed32BitType(AddressSpaceInfo::Type type) {
+ return type < AddressSpaceInfo::Type::Count && type != AddressSpaceInfo::Type::Large64Bit &&
+ type != AddressSpaceInfo::Type::Stack;
+}
+
+constexpr bool IsAllowed36BitType(AddressSpaceInfo::Type type) {
+ return type < AddressSpaceInfo::Type::Count && type != AddressSpaceInfo::Type::Large64Bit &&
+ type != AddressSpaceInfo::Type::Stack;
+}
+
+constexpr bool IsAllowed39BitType(AddressSpaceInfo::Type type) {
+ return type < AddressSpaceInfo::Type::Count && type != AddressSpaceInfo::Type::Small64Bit;
+}
+
+} // namespace
+
+u64 AddressSpaceInfo::GetAddressSpaceStart(std::size_t width, AddressSpaceInfo::Type type) {
+ const std::size_t index{static_cast<std::size_t>(type)};
+ switch (width) {
+ case 32:
+ ASSERT(IsAllowed32BitType(type));
+ ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices32Bit[index]));
+ return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].GetAddress();
+ case 36:
+ ASSERT(IsAllowed36BitType(type));
+ ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices36Bit[index]));
+ return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].GetAddress();
+ case 39:
+ ASSERT(IsAllowed39BitType(type));
+ ASSERT(IsAllowedIndexForAddress(AddressSpaceIndices39Bit[index]));
+ return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].GetAddress();
+ }
+ UNREACHABLE();
+}
+
+std::size_t AddressSpaceInfo::GetAddressSpaceSize(std::size_t width, AddressSpaceInfo::Type type) {
+ const std::size_t index{static_cast<std::size_t>(type)};
+ switch (width) {
+ case 32:
+ ASSERT(IsAllowed32BitType(type));
+ return AddressSpaceInfos[AddressSpaceIndices32Bit[index]].GetSize();
+ case 36:
+ ASSERT(IsAllowed36BitType(type));
+ return AddressSpaceInfos[AddressSpaceIndices36Bit[index]].GetSize();
+ case 39:
+ ASSERT(IsAllowed39BitType(type));
+ return AddressSpaceInfos[AddressSpaceIndices39Bit[index]].GetSize();
+ }
+ UNREACHABLE();
+}
+
+} // namespace Kernel::Memory
diff --git a/src/core/hle/kernel/memory/address_space_info.h b/src/core/hle/kernel/memory/address_space_info.h
new file mode 100644
index 000000000..421986626
--- /dev/null
+++ b/src/core/hle/kernel/memory/address_space_info.h
@@ -0,0 +1,51 @@
+// Copyright 2020 yuzu Emulator Project
+// Licensed under GPLv2 or any later version
+// Refer to the license.txt file included.
+
+#pragma once
+
+#include "common/common_funcs.h"
+#include "common/common_types.h"
+
+namespace Kernel::Memory {
+
+class AddressSpaceInfo final : NonCopyable {
+public:
+ enum class Type : u32 {
+ Is32Bit = 0,
+ Small64Bit = 1,
+ Large64Bit = 2,
+ Heap = 3,
+ Stack = 4,
+ Alias = 5,
+ 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 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)
+ : bit_width{bit_width}, addr{addr}, size{size}, type{type} {}
+
+ constexpr std::size_t GetWidth() const {
+ 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
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