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kern: SvcMapPhysicalMemoryUnsafe, SvcUnmapPhysicalMemoryUnsafe

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This commit is contained in:
Michael Scire
2020-07-24 22:04:04 -07:00
committed by SciresM
parent 583899ede3
commit 840ab0785c
7 changed files with 135 additions and 6 deletions
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47
libraries/libmesosphere/source/svc/kern_svc_physical_memory.cpp
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@@ -90,6 +90,45 @@ namespace ams::kern::svc {
return ResultSuccess();
}
Result MapPhysicalMemoryUnsafe(uintptr_t address, size_t size) {
/* Validate address / size. */
R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
/* Verify that the region is in range. */
auto &process = GetCurrentProcess();
auto &page_table = process.GetPageTable();
R_UNLESS(page_table.IsInUnsafeAliasRegion(address, size), svc::ResultInvalidMemoryRegion());
/* Verify that the process isn't already using the unsafe pool. */
R_UNLESS(process.GetMemoryPool() != KMemoryManager::Pool_Unsafe, svc::ResultInvalidMemoryPool());
/* Map the memory. */
R_TRY(page_table.MapPhysicalMemoryUnsafe(address, size));
return ResultSuccess();
}
Result UnmapPhysicalMemoryUnsafe(uintptr_t address, size_t size) {
/* Validate address / size. */
R_UNLESS(util::IsAligned(address, PageSize), svc::ResultInvalidAddress());
R_UNLESS(util::IsAligned(size, PageSize), svc::ResultInvalidSize());
R_UNLESS(size > 0, svc::ResultInvalidSize());
R_UNLESS((address < address + size), svc::ResultInvalidCurrentMemory());
/* Verify that the region is in range. */
auto &process = GetCurrentProcess();
auto &page_table = process.GetPageTable();
R_UNLESS(page_table.IsInUnsafeAliasRegion(address, size), svc::ResultInvalidMemoryRegion());
/* Unmap the memory. */
R_TRY(page_table.UnmapPhysicalMemoryUnsafe(address, size));
return ResultSuccess();
}
}
/* ============================= 64 ABI ============================= */
@@ -108,11 +147,11 @@ namespace ams::kern::svc {
}
Result MapPhysicalMemoryUnsafe64(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcMapPhysicalMemoryUnsafe64 was called.");
return MapPhysicalMemoryUnsafe(address, size);
}
Result UnmapPhysicalMemoryUnsafe64(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcUnmapPhysicalMemoryUnsafe64 was called.");
return UnmapPhysicalMemoryUnsafe(address, size);
}
Result SetUnsafeLimit64(ams::svc::Size limit) {
@@ -135,11 +174,11 @@ namespace ams::kern::svc {
}
Result MapPhysicalMemoryUnsafe64From32(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcMapPhysicalMemoryUnsafe64From32 was called.");
return MapPhysicalMemoryUnsafe(address, size);
}
Result UnmapPhysicalMemoryUnsafe64From32(ams::svc::Address address, ams::svc::Size size) {
MESOSPHERE_PANIC("Stubbed SvcUnmapPhysicalMemoryUnsafe64From32 was called.");
return UnmapPhysicalMemoryUnsafe(address, size);
}
Result SetUnsafeLimit64From32(ams::svc::Size limit) {