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vm_manager: Add member function for setting memory attributes across an address range

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This puts the backing functionality for svcSetMemoryAttribute in place,
which will be utilized in a following change.
This commit is contained in:
Lioncash
2018-12-15 14:29:39 -05:00
parent 603cc72168
commit 622242e345
2 changed files with 41 additions and 0 deletions
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28
src/core/hle/kernel/vm_manager.cpp
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@ -322,6 +322,34 @@ MemoryInfo VMManager::QueryMemory(VAddr address) const {
return memory_info;
}
ResultCode VMManager::SetMemoryAttribute(VAddr address, u64 size, MemoryAttribute mask,
MemoryAttribute attribute) {
constexpr auto ignore_mask = MemoryAttribute::Uncached | MemoryAttribute::DeviceMapped;
constexpr auto attribute_mask = ~ignore_mask;
const auto result = CheckRangeState(
address, size, MemoryState::FlagUncached, MemoryState::FlagUncached, VMAPermission::None,
VMAPermission::None, attribute_mask, MemoryAttribute::None, ignore_mask);
if (result.Failed()) {
return result.Code();
}
const auto [prev_state, prev_permissions, prev_attributes] = *result;
const auto new_attribute = (prev_attributes & ~mask) | (mask & attribute);
const auto carve_result = CarveVMARange(address, size);
if (carve_result.Failed()) {
return carve_result.Code();
}
auto vma_iter = *carve_result;
vma_iter->second.attribute = new_attribute;
MergeAdjacent(vma_iter);
return RESULT_SUCCESS;
}
ResultCode VMManager::MirrorMemory(VAddr dst_addr, VAddr src_addr, u64 size, MemoryState state) {
const auto vma = FindVMA(src_addr);