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Remove global BlpGetNextPageTable implementation in favor of arch-specific versions
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Aiken Harris 2025-08-04 23:22:23 +02:00 committed by CodingWorkshop Signing Team
parent ed75060482
commit 544ec63d6e
Signed by: CodingWorkshop Signing Team
GPG Key ID: 6DC88369C82795D2
1 changed files with 0 additions and 72 deletions
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72
xtldr/memory.c
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@ -739,75 +739,3 @@ BlpGetLoaderMemoryType(IN EFI_MEMORY_TYPE EfiMemoryType)
/* Return XTLDR memory type */ /* Return XTLDR memory type */
return MemoryType; return MemoryType;
} }
/**
* Returns next level of the Page Table.
*
* @param PageMap
* Supplies a pointer to the page mapping structure.
*
* @param PageTable
* Supplies a pointer to the current Page Table.
*
* @param Entry
* Supplies an index of the current Page Table entry.
*
* @param NextPageTable
* Supplies a pointer to the memory area where the next Page Table level is returned.
*
* @return This routine returns a status code.
*
* @since XT 1.0
*/
XTCDECL
EFI_STATUS
BlpGetNextPageTable(IN PXTBL_PAGE_MAPPING PageMap,
IN PHARDWARE_PTE PageTable,
IN SIZE_T Entry,
OUT PHARDWARE_PTE *NextPageTable)
{
EFI_PHYSICAL_ADDRESS Address;
ULONGLONG PmlPointer;
EFI_STATUS Status;
/* Check if this is a valid table */
if(PageTable[Entry].Valid)
{
/* Get PML pointer */
PmlPointer = PageTable[Entry].PageFrameNumber;
PmlPointer <<= EFI_PAGE_SHIFT;
}
else
{
/* Allocate pages for new PML entry */
Status = BlAllocateMemoryPages(1, &Address);
if(Status != STATUS_EFI_SUCCESS)
{
/* Memory allocation failure */
return Status;
}
/* Add new memory mapping */
Status = BlMapVirtualMemory(PageMap, NULL, (PVOID)(UINT_PTR)Address, 1, LoaderMemoryData);
if(Status != STATUS_EFI_SUCCESS)
{
/* Memory mapping failure */
return Status;
}
/* Fill allocated memory with zeros */
RtlZeroMemory((PVOID)(ULONGLONG)Address, EFI_PAGE_SIZE);
/* Set paging entry settings */
PageTable[Entry].PageFrameNumber = Address / EFI_PAGE_SIZE;
PageTable[Entry].Valid = 1;
PageTable[Entry].Writable = 1;
PmlPointer = (ULONGLONG)Address;
}
/* Set next Page Map Level (PML) */
*NextPageTable = (PHARDWARE_PTE)(ULONGLONG)PmlPointer;
/* Return success */
return STATUS_EFI_SUCCESS;
}