mirror of
https://github.com/Atmosphere-NX/Atmosphere.git
synced 2024-11-08 21:21:48 +00:00
103 lines
4.7 KiB
C++
103 lines
4.7 KiB
C++
/*
|
|
* Copyright (c) 2018-2020 Atmosphère-NX
|
|
*
|
|
* This program is free software; you can redistribute it and/or modify it
|
|
* under the terms and conditions of the GNU General Public License,
|
|
* version 2, as published by the Free Software Foundation.
|
|
*
|
|
* This program is distributed in the hope it will be useful, but WITHOUT
|
|
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
|
|
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
|
|
* more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
#include <mesosphere.hpp>
|
|
|
|
namespace ams::kern {
|
|
|
|
namespace {
|
|
|
|
constexpr uintptr_t Invalid = std::numeric_limits<uintptr_t>::max();
|
|
|
|
constexpr KAddressSpaceInfo AddressSpaceInfos[] = {
|
|
{ 32, 2_MB, 1_GB - 2_MB, KAddressSpaceInfo::Type_MapSmall, },
|
|
{ 32, 1_GB, 4_GB - 1_GB, KAddressSpaceInfo::Type_MapLarge, },
|
|
{ 32, Invalid, 1_GB, KAddressSpaceInfo::Type_Heap, },
|
|
{ 32, Invalid, 1_GB, KAddressSpaceInfo::Type_Alias, },
|
|
{ 36, 128_MB, 2_GB - 128_MB, KAddressSpaceInfo::Type_MapSmall, },
|
|
{ 36, 2_GB, 64_GB - 2_GB, KAddressSpaceInfo::Type_MapLarge, },
|
|
{ 36, Invalid, 6_GB, KAddressSpaceInfo::Type_Heap, },
|
|
{ 36, Invalid, 6_GB, KAddressSpaceInfo::Type_Alias, },
|
|
{ 39, 128_MB, 512_GB - 128_MB, KAddressSpaceInfo::Type_Map39Bit, },
|
|
{ 39, Invalid, 64_GB, KAddressSpaceInfo::Type_MapSmall, },
|
|
{ 39, Invalid, 6_GB, KAddressSpaceInfo::Type_Heap, },
|
|
{ 39, Invalid, 64_GB, KAddressSpaceInfo::Type_Alias, },
|
|
{ 39, Invalid, 2_GB, KAddressSpaceInfo::Type_Stack, },
|
|
};
|
|
|
|
constexpr bool IsAllowedIndexForAddress(size_t index) {
|
|
return index < util::size(AddressSpaceInfos) && AddressSpaceInfos[index].GetAddress() != Invalid;
|
|
}
|
|
|
|
constexpr size_t AddressSpaceIndices32Bit[KAddressSpaceInfo::Type_Count] = {
|
|
0, 1, 0, 2, 0, 3,
|
|
};
|
|
|
|
constexpr size_t AddressSpaceIndices36Bit[KAddressSpaceInfo::Type_Count] = {
|
|
4, 5, 4, 6, 4, 7,
|
|
};
|
|
|
|
constexpr size_t AddressSpaceIndices39Bit[KAddressSpaceInfo::Type_Count] = {
|
|
9, 8, 8, 10, 12, 11,
|
|
};
|
|
|
|
constexpr bool IsAllowed32BitType(KAddressSpaceInfo::Type type) {
|
|
return type < KAddressSpaceInfo::Type_Count && type != KAddressSpaceInfo::Type_Map39Bit && type != KAddressSpaceInfo::Type_Stack;
|
|
}
|
|
|
|
constexpr bool IsAllowed36BitType(KAddressSpaceInfo::Type type) {
|
|
return type < KAddressSpaceInfo::Type_Count && type != KAddressSpaceInfo::Type_Map39Bit && type != KAddressSpaceInfo::Type_Stack;
|
|
}
|
|
|
|
constexpr bool IsAllowed39BitType(KAddressSpaceInfo::Type type) {
|
|
return type < KAddressSpaceInfo::Type_Count && type != KAddressSpaceInfo::Type_MapLarge;
|
|
}
|
|
|
|
}
|
|
|
|
uintptr_t KAddressSpaceInfo::GetAddressSpaceStart(size_t width, KAddressSpaceInfo::Type type) {
|
|
switch (width) {
|
|
case 32:
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowed32BitType(type));
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowedIndexForAddress(AddressSpaceIndices32Bit[type]));
|
|
return AddressSpaceInfos[AddressSpaceIndices32Bit[type]].GetAddress();
|
|
case 36:
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowed36BitType(type));
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowedIndexForAddress(AddressSpaceIndices36Bit[type]));
|
|
return AddressSpaceInfos[AddressSpaceIndices36Bit[type]].GetAddress();
|
|
case 39:
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowed39BitType(type));
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowedIndexForAddress(AddressSpaceIndices39Bit[type]));
|
|
return AddressSpaceInfos[AddressSpaceIndices39Bit[type]].GetAddress();
|
|
MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
}
|
|
|
|
size_t KAddressSpaceInfo::GetAddressSpaceSize(size_t width, KAddressSpaceInfo::Type type) {
|
|
switch (width) {
|
|
case 32:
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowed32BitType(type));
|
|
return AddressSpaceInfos[AddressSpaceIndices32Bit[type]].GetSize();
|
|
case 36:
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowed36BitType(type));
|
|
return AddressSpaceInfos[AddressSpaceIndices36Bit[type]].GetSize();
|
|
case 39:
|
|
MESOSPHERE_ABORT_UNLESS(IsAllowed39BitType(type));
|
|
return AddressSpaceInfos[AddressSpaceIndices39Bit[type]].GetSize();
|
|
MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
|
|
}
|
|
}
|
|
|
|
}
|