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Refactor real-mode memory allocation and identity mapping for AP trampoline
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This commit is contained in:
Aiken Harris
2026-06-12 13:16:48 +02:00
parent 81c799e590
commit c702152cca
4 changed files with 236 additions and 36 deletions
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15
xtoskrnl/includes/mm/hlpool.hh
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@@ -20,6 +20,8 @@ namespace MM
private:
STATIC LOADER_MEMORY_DESCRIPTOR HardwareAllocationDescriptors[MM_HARDWARE_ALLOCATION_DESCRIPTORS];
STATIC PVOID HardwareHeapStart;
STATIC PHYSICAL_ADDRESS LowMemoryPhysicalAddress;
STATIC PVOID LowMemoryVirtualAddress;
STATIC ULONG UsedHardwareAllocationDescriptors;
public:
@@ -27,12 +29,19 @@ namespace MM
IN BOOLEAN Aligned,
IN ULONGLONG MaximumAddress,
OUT PPHYSICAL_ADDRESS Buffer);
STATIC XTAPI XTSTATUS AllocateRealModeMemory(IN PFN_NUMBER PageCount,
OUT PVOID *MemoryAddress);
STATIC XTAPI XTSTATUS AllocateLowMemory(OUT PPHYSICAL_ADDRESS PhysicalAddress,
OUT PVOID *VirtualAddress);
STATIC XTAPI ULONG CalculateRealModeAllocationPages(IN ULONG TrampolineCodeSize);
STATIC XTAPI XTSTATUS FreeHardwareMemory(IN PHYSICAL_ADDRESS PhysicalAddress,
IN PFN_NUMBER PageCount);
STATIC XTAPI XTSTATUS FreeRealModeMemory(IN PVOID VirtualAddress,
IN PFN_NUMBER PageCount);
STATIC XTAPI XTSTATUS MapHardwareMemory(IN PHYSICAL_ADDRESS PhysicalAddress,
IN PFN_NUMBER PageCount,
IN BOOLEAN FlushTlb,
OUT PVOID *VirtualAddress);
STATIC XTAPI XTSTATUS MapRealModeMemory(IN PHYSICAL_ADDRESS PhysicalAddress,
IN ULONG Size);
STATIC XTAPI VOID MarkHardwareMemoryWriteThrough(IN PVOID VirtualAddress,
IN PFN_NUMBER PageCount);
STATIC XTAPI VOID RemapHardwareMemory(IN PVOID VirtualAddress,
@@ -41,6 +50,8 @@ namespace MM
STATIC XTAPI XTSTATUS UnmapHardwareMemory(IN PVOID VirtualAddress,
IN PFN_NUMBER PageCount,
IN BOOLEAN FlushTlb);
STATIC XTAPI VOID UnmapRealModeMemory(IN PHYSICAL_ADDRESS PhysicalAddress,
IN ULONG Size);
};
}