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Extend PTE helpers with raw read and write support
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This commit is contained in:
Aiken Harris
2025-12-22 08:21:43 +01:00
parent 755a167f2c
commit e237a944cc
7 changed files with 174 additions and 1 deletions
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3
xtoskrnl/includes/mm/amd64/pagemap.hh
View File

@@ -38,6 +38,7 @@ namespace MM
XTAPI PMMPPE GetPpeAddress(IN PVOID Address);
XTAPI ULONG GetPpeOffset(IN PVOID Address);
VIRTUAL XTAPI PVOID GetPpeVirtualAddress(IN PMMPPE PpePointer) = 0;
XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer);
XTAPI PMMPTE GetPteAddress(IN PVOID Address);
XTAPI LONG GetPteDistance(PMMPTE EndPte,
PMMPTE StartPte);
@@ -57,6 +58,8 @@ namespace MM
XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN PFN_NUMBER PageFrameNumber,
IN ULONG_PTR AttributesMask);
XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes);
XTAPI VOID SetPteCaching(IN PMMPTE PtePointer,
IN BOOLEAN CacheDisable,
IN BOOLEAN WriteThrough);

3
xtoskrnl/includes/mm/amd64/paging.hh
View File

@@ -36,6 +36,7 @@ namespace MM
STATIC XTAPI PVOID GetPdeVirtualAddress(IN PMMPDE PdePointer);
STATIC XTAPI PMMPPE GetPpeAddress(IN PVOID Address);
STATIC XTAPI PVOID GetPpeVirtualAddress(IN PMMPPE PpePointer);
STATIC XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer);
STATIC XTAPI PMMPTE GetPteAddress(IN PVOID Address);
STATIC XTAPI LONG GetPteDistance(PMMPTE EndPte,
PMMPTE StartPte);
@@ -53,6 +54,8 @@ namespace MM
STATIC XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN PFN_NUMBER PageFrameNumber,
IN ULONG_PTR AttributesMask);
STATIC XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes);
STATIC XTAPI VOID SetPteCaching(IN PMMPTE PtePointer,
IN BOOLEAN CacheDisable,
IN BOOLEAN WriteThrough);

9
xtoskrnl/includes/mm/i686/pagemap.hh
View File

@@ -35,6 +35,7 @@ namespace MM
XTAPI PMMPPE GetPpeAddress(IN PVOID Address);
XTAPI ULONG GetPpeOffset(IN PVOID Address);
XTAPI PVOID GetPpeVirtualAddress(IN PMMPPE PpePointer);
VIRTUAL XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer) = 0;
XTAPI PMMPTE GetPteAddress(IN PVOID Address);
XTAPI ULONG GetPteOffset(IN PVOID Address);
VIRTUAL XTAPI LONG GetPteDistance(PMMPTE EndPte,
@@ -51,6 +52,8 @@ namespace MM
VIRTUAL XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN PFN_NUMBER PageFrameNumber,
IN ULONG_PTR AttributesMask) = 0;
VIRTUAL XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes) = 0;
VIRTUAL XTAPI VOID SetPteCaching(IN PMMPTE PtePointer,
IN BOOLEAN CacheDisable,
IN BOOLEAN WriteThrough) = 0;
@@ -70,6 +73,7 @@ namespace MM
XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte);
XTAPI PFN_NUMBER GetPageFrameNumber(IN PMMPTE Pte);
XTAPI PVOID GetPdeVirtualAddress(IN PMMPDE PdePointer);
XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer);
XTAPI LONG GetPteDistance(PMMPTE EndPte,
PMMPTE StartPte);
XTAPI ULONG GetPteSize(VOID);
@@ -83,6 +87,8 @@ namespace MM
XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN PFN_NUMBER PageFrameNumber,
IN ULONG_PTR AttributesMask);
XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes);
XTAPI VOID SetPteCaching(IN PMMPTE PtePointer,
IN BOOLEAN CacheDisable,
IN BOOLEAN WriteThrough);
@@ -101,6 +107,7 @@ namespace MM
XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte);
XTAPI PFN_NUMBER GetPageFrameNumber(IN PMMPTE Pte);
XTAPI PVOID GetPdeVirtualAddress(IN PMMPDE PdePointer);
XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer);
XTAPI LONG GetPteDistance(PMMPTE EndPte,
PMMPTE StartPte);
XTAPI ULONG GetPteSize(VOID);
@@ -114,6 +121,8 @@ namespace MM
XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN PFN_NUMBER PageFrameNumber,
IN ULONG_PTR AttributesMask);
XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes);
XTAPI VOID SetPteCaching(IN PMMPTE PtePointer,
IN BOOLEAN CacheDisable,
IN BOOLEAN WriteThrough);

3
xtoskrnl/includes/mm/i686/paging.hh
View File

@@ -34,6 +34,7 @@ namespace MM
STATIC XTAPI PVOID GetPdeVirtualAddress(IN PMMPDE PdePointer);
STATIC XTAPI PMMPPE GetPpeAddress(IN PVOID Address);
STATIC XTAPI PVOID GetPpeVirtualAddress(IN PMMPPE PpePointer);
STATIC XTAPI ULONG_PTR GetPte(IN PMMPTE PtePointer);
STATIC XTAPI PMMPTE GetPteAddress(IN PVOID Address);
STATIC XTAPI LONG GetPteDistance(PMMPTE EndPte,
PMMPTE StartPte);
@@ -49,6 +50,8 @@ namespace MM
STATIC XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN PFN_NUMBER PageFrameNumber,
IN ULONG_PTR AttributesMask);
STATIC XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes);
STATIC XTAPI VOID SetPteCaching(IN PMMPTE PtePointer,
IN BOOLEAN CacheDisable,
IN BOOLEAN WriteThrough);

41
xtoskrnl/mm/amd64/pagemap.cc
View File

@@ -269,6 +269,24 @@ MM::PageMap::GetPpeOffset(IN PVOID Address)
return ((((ULONGLONG)Address) >> MM_PPI_SHIFT) & 0x1FF);
}
/**
* Gets the entire contents of a Page Table Entry (PTE) as a single value.
*
* @param PtePointer
* Pointer to the Page Table Entry (PTE) to read.
*
* @return This routine returns the contents of the PTE as a single value.
*
* @since XT 1.0
*/
XTAPI
ULONG_PTR
MM::PageMap::GetPte(IN PMMPTE PtePointer)
{
/* Return PTE value */
return PtePointer->Long;
}
/**
* Gets the address of the PTE (Page Table Entry), that maps given address.
*
@@ -461,7 +479,7 @@ MM::PageMap::SetOneEntry(IN PMMPTE Pte,
}
/**
* Sets a PML2 page table entry (PTE) with the specified physical page and access flags.
* Sets a Page Table Entry (PTE) with the specified physical page and access flags.
*
* @param PtePointer
* Pointer to the page table entry (PTE) to set.
@@ -488,6 +506,27 @@ MM::PageMap::SetPte(IN PMMPTE PtePointer,
PtePointer->Long |= AttributesMask;
}
/**
* Sets a Page Table Entry (PTE) with the specified attributes.
*
* @param PtePointer
* Pointer to the page table entry (PTE) to set.
*
* @param Attributes
* Specifies the attributes to apply to the PTE.
*
* @return This routine does not return any value.
*
* @since XT 1.0
*/
XTAPI
VOID
MM::PageMap::SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes)
{
PtePointer->Long = Attributes;
}
/**
* Sets caching attributes for a PML2 page table entry (PTE).
*

77
xtoskrnl/mm/i686/pagemap.cc
View File

@@ -301,6 +301,23 @@ MM::PageMapBasic::GetPdeVirtualAddress(IN PMMPDE PdePointer)
return ((PVOID)((ULONG)(PdePointer) << 20));
}
/**
* Gets the entire contents of a PML2 Page Table Entry (PTE) as a single value.
*
* @param PtePointer
* Pointer to the Page Table Entry (PTE) to read.
*
* @return This routine returns the contents of the PTE as a single value.
*
* @since XT 1.0
*/
XTAPI
ULONG_PTR
MM::PageMapBasic::GetPte(IN PMMPTE PtePointer)
{
/* Return PTE value */
return PtePointer->Pml2.Long;
}
/**
* Calculates the distance between two PTE pointers.
*
@@ -472,6 +489,27 @@ MM::PageMapBasic::SetPte(IN PMMPTE PtePointer,
PtePointer->Pml2.Long |= AttributesMask;
}
/**
* Sets a PML2 page table entry (PTE) with the specified attributes.
*
* @param PtePointer
* Pointer to the page table entry (PTE) to set.
*
* @param Attributes
* Specifies the attributes to apply to the PTE.
*
* @return This routine does not return any value.
*
* @since XT 1.0
*/
XTAPI
VOID
MM::PageMapBasic::SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes)
{
PtePointer->Pml2.Long = Attributes;
}
/**
* Sets caching attributes for a PML2 page table entry (PTE).
*
@@ -650,6 +688,24 @@ MM::PageMapXpa::GetPdeVirtualAddress(IN PMMPDE PdePointer)
return ((PVOID)((ULONG)(PdePointer) << 18));
}
/**
* Gets the entire contents of a PML3 Page Table Entry (PTE) as a single value.
*
* @param PtePointer
* Pointer to the Page Table Entry (PTE) to read.
*
* @return This routine returns the contents of the PTE as a single value.
*
* @since XT 1.0
*/
XTAPI
ULONG_PTR
MM::PageMapXpa::GetPte(IN PMMPTE PtePointer)
{
/* Return PTE value */
return PtePointer->Pml3.Long;
}
/**
* Calculates the distance between two PTE pointers.
*
@@ -820,6 +876,27 @@ MM::PageMapXpa::SetPte(IN PMMPTE PtePointer,
PtePointer->Pml3.Long |= AttributesMask;
}
/**
* Sets a PML3 page table entry (PTE) with the specified attributes.
*
* @param PtePointer
* Pointer to the page table entry (PTE) to set.
*
* @param Attributes
* Specifies the attributes to apply to the PTE.
*
* @return This routine does not return any value.
*
* @since XT 1.0
*/
XTAPI
VOID
MM::PageMapXpa::SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes)
{
PtePointer->Pml3.Long = Attributes;
}
/**
* Sets caching attributes for a PML3 page table entry (PTE).
*

39
xtoskrnl/mm/paging.cc
View File

@@ -293,6 +293,24 @@ MM::Paging::GetPpeVirtualAddress(IN PMMPPE PpePointer)
return PmlRoutines->GetPpeVirtualAddress(PpePointer);
}
/**
* Gets the entire contents of a Page Table Entry (PTE) as a single value.
*
* @param PtePointer
* Pointer to the Page Table Entry (PTE) to read.
*
* @return This routine returns the contents of the PTE as a single value.
*
* @since XT 1.0
*/
XTAPI
ULONG_PTR
MM::Paging::GetPte(IN PMMPTE PtePointer)
{
/* Return PTE value */
return PmlRoutines->GetPte(PtePointer);
}
/**
* Gets the address of the PTE (Page Table Entry), that maps given address.
*
@@ -495,6 +513,27 @@ MM::Paging::SetPte(IN PMMPTE PtePointer,
PmlRoutines->SetPte(PtePointer, PageFrameNumber, AttributesMask);
}
/**
* Sets a Page Table Entry (PTE) with the specified attributes.
*
* @param PtePointer
* Pointer to the page table entry (PTE) to set.
*
* @param Attributes
* Specifies the attributes to apply to the PTE.
*
* @return This routine does not return any value.
*
* @since XT 1.0
*/
XTAPI
VOID
MM::Paging::SetPte(IN PMMPTE PtePointer,
IN ULONG_PTR Attributes)
{
PmlRoutines->SetPte(PtePointer, Attributes);
}
/**
* Sets caching attributes for a PML2 page table entry (PTE).
*