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kern: update KSystemControl::InitializePhase1, dynamically scale 39-bit address space regions

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This commit is contained in:
Michael Scire 2023-02-21 08:53:17 -07:00 • committed by SciresM
parent 6e2dd791b2
commit db510f96c3
5 changed files with 83 additions and 100 deletions
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68
libraries/libmesosphere/source/kern_k_address_space_info.cpp
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@ -21,7 +21,7 @@ namespace ams::kern {
constexpr uintptr_t Invalid = std::numeric_limits<uintptr_t>::max();
constexpr KAddressSpaceInfo AddressSpaceInfos[] = {
constinit KAddressSpaceInfo AddressSpaceInfos[] = {
{ 32, ams::svc::AddressSmallMap32Start, ams::svc::AddressSmallMap32Size, KAddressSpaceInfo::Type_MapSmall, },
{ 32, ams::svc::AddressLargeMap32Start, ams::svc::AddressLargeMap32Size, KAddressSpaceInfo::Type_MapLarge, },
{ 32, Invalid, ams::svc::AddressMemoryRegionHeap32Size, KAddressSpaceInfo::Type_Heap, },
@ -37,67 +37,27 @@ namespace ams::kern {
{ 39, Invalid, ams::svc::AddressMemoryRegionStack39Size, 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;
KAddressSpaceInfo &GetAddressSpaceInfo(size_t width, KAddressSpaceInfo::Type type) {
for (auto &info : AddressSpaceInfos) {
if (info.GetWidth() == width && info.GetType() == type) {
return info;
}
}
MESOSPHERE_PANIC("Could not find AddressSpaceInfo");
}
}
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();
}
return GetAddressSpaceInfo(width, type).GetAddress();
}
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();
}
return GetAddressSpaceInfo(width, type).GetSize();
}
void KAddressSpaceInfo::SetAddressSpaceSize(size_t width, Type type, size_t size) {
GetAddressSpaceInfo(width, type).SetSize(size);
}
}