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