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kern: load initial process binary from user pool, rather than from pt heap

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Michael Scire 2021-04-07 12:25:10 -07:00 • committed by SciresM
parent a1e137cc1c
commit 0f8b7be2d2
13 changed files with 350 additions and 184 deletions
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39
libraries/libmesosphere/source/kern_k_memory_manager.cpp
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@ -100,19 +100,48 @@ namespace ams::kern {
}
/* Free each region to its corresponding heap. */
size_t reserved_sizes[MaxManagerCount] = {};
const uintptr_t ini_start = GetInteger(GetInitialProcessBinaryAddress());
const uintptr_t ini_end = ini_start + InitialProcessBinarySizeMax;
const uintptr_t ini_last = ini_end - 1;
for (const auto &it : KMemoryLayout::GetVirtualMemoryRegionTree()) {
if (it.IsDerivedFrom(KMemoryRegionType_VirtualDramUserPool)) {
/* Check the region. */
MESOSPHERE_ABORT_UNLESS(it.GetEndAddress() != 0);
/* Get the manager for the region. */
auto &manager = m_managers[it.GetAttributes()];
/* Free the memory to the heap. */
m_managers[it.GetAttributes()].Free(it.GetAddress(), it.GetSize() / PageSize);
if (it.GetAddress() <= ini_start && ini_last <= it.GetLastAddress()) {
/* Free memory before the ini to the heap. */
if (it.GetAddress() != ini_start) {
manager.Free(it.GetAddress(), (ini_start - it.GetAddress()) / PageSize);
}
/* Open/reserve the ini memory. */
manager.OpenFirst(ini_start, InitialProcessBinarySizeMax / PageSize);
reserved_sizes[it.GetAttributes()] += InitialProcessBinarySizeMax;
/* Free memory after the ini to the heap. */
if (ini_last != it.GetLastAddress()) {
MESOSPHERE_ABORT_UNLESS(it.GetEndAddress() != 0);
manager.Free(ini_end, it.GetEndAddress() - ini_end);
}
} else {
/* Ensure there's no partial overlap with the ini image. */
if (it.GetAddress() <= ini_last) {
MESOSPHERE_ABORT_UNLESS(it.GetLastAddress() < ini_start);
} else {
/* Otherwise, check the region for general validity. */
MESOSPHERE_ABORT_UNLESS(it.GetEndAddress() != 0);
}
/* Free the memory to the heap. */
manager.Free(it.GetAddress(), it.GetSize() / PageSize);
}
}
}
/* Update the used size for all managers. */
for (size_t i = 0; i < m_num_managers; ++i) {
m_managers[i].UpdateUsedHeapSize();
m_managers[i].SetInitialUsedHeapSize(reserved_sizes[i]);
}
}