61 lines
2.9 KiB
C++
Executable File
61 lines
2.9 KiB
C++
Executable File
// SPDX-FileCopyrightText: Copyright 2020 yuzu Emulator Project
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// SPDX-License-Identifier: GPL-2.0-or-later
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#include <array>
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#include "common/assert.h"
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#include "common/literals.h"
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#include "core/hle/kernel/k_address_space_info.h"
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namespace Kernel {
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namespace {
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using namespace Common::Literals;
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constexpr u64 Size_Invalid = UINT64_MAX;
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// clang-format off
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constexpr std::array<KAddressSpaceInfo, 13> AddressSpaceInfos{{
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{ .bit_width = 32, .address = 2_MiB , .size = 1_GiB - 2_MiB , .type = KAddressSpaceInfo::Type::MapSmall, },
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{ .bit_width = 32, .address = 1_GiB , .size = 4_GiB - 1_GiB , .type = KAddressSpaceInfo::Type::MapLarge, },
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{ .bit_width = 32, .address = Size_Invalid, .size = 1_GiB , .type = KAddressSpaceInfo::Type::Alias, },
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{ .bit_width = 32, .address = Size_Invalid, .size = 1_GiB , .type = KAddressSpaceInfo::Type::Heap, },
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{ .bit_width = 36, .address = 128_MiB , .size = 2_GiB - 128_MiB, .type = KAddressSpaceInfo::Type::MapSmall, },
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{ .bit_width = 36, .address = 2_GiB , .size = 64_GiB - 2_GiB , .type = KAddressSpaceInfo::Type::MapLarge, },
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{ .bit_width = 36, .address = Size_Invalid, .size = 8_GiB , .type = KAddressSpaceInfo::Type::Heap, },
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{ .bit_width = 36, .address = Size_Invalid, .size = 6_GiB , .type = KAddressSpaceInfo::Type::Alias, },
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#ifdef ANDROID
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// With Android, we use a 38-bit address space due to memory limitations. This should (safely) truncate ASLR region.
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{ .bit_width = 39, .address = 128_MiB , .size = 256_GiB - 128_MiB, .type = KAddressSpaceInfo::Type::Map39Bit, },
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#else
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{ .bit_width = 39, .address = 128_MiB , .size = 512_GiB - 128_MiB, .type = KAddressSpaceInfo::Type::Map39Bit, },
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#endif
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{ .bit_width = 39, .address = Size_Invalid, .size = 64_GiB , .type = KAddressSpaceInfo::Type::MapSmall },
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{ .bit_width = 39, .address = Size_Invalid, .size = 8_GiB , .type = KAddressSpaceInfo::Type::Heap, },
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{ .bit_width = 39, .address = Size_Invalid, .size = 64_GiB , .type = KAddressSpaceInfo::Type::Alias, },
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{ .bit_width = 39, .address = Size_Invalid, .size = 2_GiB , .type = KAddressSpaceInfo::Type::Stack, },
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}};
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// clang-format on
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const KAddressSpaceInfo& GetAddressSpaceInfo(size_t width, KAddressSpaceInfo::Type type) {
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for (auto& info : AddressSpaceInfos) {
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if (info.bit_width == width && info.type == type) {
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return info;
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}
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}
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UNREACHABLE_MSG("Could not find AddressSpaceInfo");
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}
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} // namespace
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std::size_t KAddressSpaceInfo::GetAddressSpaceStart(size_t width, KAddressSpaceInfo::Type type) {
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return GetAddressSpaceInfo(width, type).address;
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}
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std::size_t KAddressSpaceInfo::GetAddressSpaceSize(size_t width, KAddressSpaceInfo::Type type) {
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return GetAddressSpaceInfo(width, type).size;
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}
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} // namespace Kernel
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