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kern: implement KProcess::Run

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This commit is contained in:
Michael Scire
2020-02-19 19:38:20 -08:00
parent 28ea0b12a8
commit c568788609
25 changed files with 516 additions and 33 deletions
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61
libraries/libmesosphere/source/arch/arm64/kern_k_page_table.cpp
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@@ -184,8 +184,20 @@ namespace ams::kern::arch::arm64 {
}
}
Result KPageTable::Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, const KPageGroup *page_group, const KPageProperties properties, OperationType operation, bool reuse_ll) {
MESOSPHERE_TODO_IMPLEMENT();
Result KPageTable::Operate(PageLinkedList *page_list, KProcessAddress virt_addr, size_t num_pages, const KPageGroup &page_group, const KPageProperties properties, OperationType operation, bool reuse_ll) {
/* Check validity of parameters. */
MESOSPHERE_ASSERT(this->IsLockedByCurrentThread());
MESOSPHERE_ASSERT(util::IsAligned(GetInteger(virt_addr), PageSize));
MESOSPHERE_ASSERT(num_pages > 0);
MESOSPHERE_ASSERT(num_pages == page_group.GetNumPages());
/* Map the page group. */
auto entry_template = this->GetEntryTemplate(properties);
switch (operation) {
case OperationType_MapGroup:
return this->MapGroup(virt_addr, page_group, num_pages, entry_template, page_list, reuse_ll);
MESOSPHERE_UNREACHABLE_DEFAULT_CASE();
}
}
Result KPageTable::Map(KProcessAddress virt_addr, KPhysicalAddress phys_addr, size_t num_pages, PageTableEntry entry_template, PageLinkedList *page_list, bool reuse_ll) {
@@ -510,6 +522,7 @@ namespace ams::kern::arch::arm64 {
}
}
/* We successfully mapped, so cancel our guard. */
map_guard.Cancel();
}
@@ -527,6 +540,50 @@ namespace ams::kern::arch::arm64 {
return ResultSuccess();
}
Result KPageTable::MapGroup(KProcessAddress virt_addr, const KPageGroup &pg, size_t num_pages, PageTableEntry entry_template, PageLinkedList *page_list, bool reuse_ll) {
MESOSPHERE_ASSERT(this->IsLockedByCurrentThread());
/* We want to maintain a new reference to every page in the group. */
KScopedPageGroup spg(pg);
/* Cache initial address for use on cleanup. */
const KProcessAddress orig_virt_addr = virt_addr;
size_t mapped_pages = 0;
/* Map the pages, using a guard to ensure we don't leak. */
{
auto map_guard = SCOPE_GUARD { MESOSPHERE_R_ABORT_UNLESS(this->Unmap(orig_virt_addr, num_pages, page_list, true, true)); };
if (num_pages < ContiguousPageSize / PageSize) {
for (const auto &block : pg) {
const KPhysicalAddress block_phys_addr = GetLinearPhysicalAddress(block.GetAddress());
const size_t cur_pages = block.GetNumPages();
R_TRY(this->Map(virt_addr, block_phys_addr, cur_pages, entry_template, L3BlockSize, page_list, reuse_ll));
virt_addr += cur_pages * PageSize;
mapped_pages += cur_pages;
}
} else {
MESOSPHERE_TODO("Large page group map");
}
/* We successfully mapped, so cancel our guard. */
map_guard.Cancel();
}
MESOSPHERE_ASSERT(mapped_pages == num_pages);
/* Perform what coalescing we can. */
this->MergePages(orig_virt_addr, page_list);
if (num_pages > 1) {
this->MergePages(orig_virt_addr + (num_pages - 1) * PageSize, page_list);
}
/* We succeeded! We want to persist the reference to the pages. */
spg.CancelClose();
return ResultSuccess();
}
bool KPageTable::MergePages(KProcessAddress virt_addr, PageLinkedList *page_list) {
MESOSPHERE_ASSERT(this->IsLockedByCurrentThread());