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Split paging interface into arch-specific code

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This commit is contained in:
Aiken Harris
2025-11-30 19:19:32 +01:00
parent d4287198b0
commit 4a7494ad3f
5 changed files with 156 additions and 94 deletions
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2
xtoskrnl/includes/mm.hh
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@@ -12,10 +12,10 @@
#include <xtos.hh>
#include XTOS_ARCH_HEADER(mm, pagemap.hh)
#include XTOS_ARCH_HEADER(mm, paging.hh)
#include <mm/hlpool.hh>
#include <mm/init.hh>
#include <mm/kpool.hh>
#include <mm/paging.hh>
#endif /* __XTOSKRNL_MM_HH */

13
xtoskrnl/includes/mm/paging.hh → xtoskrnl/includes/mm/amd64/paging.hh
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@@ -1,13 +1,13 @@
/**
* PROJECT: ExectOS
* COPYRIGHT: See COPYING.md in the top level directory
* FILE: xtoskrnl/includes/mm/paging.hh
* DESCRIPTION: Low level page management support
* FILE: xtoskrnl/includes/mm/amd64/paging.hh
* DESCRIPTION: Low level page management support for AMD64
* DEVELOPERS: Aiken Harris <harraiken91@gmail.com>
*/
#ifndef __XTOSKRNL_MM_PAGING_HH
#define __XTOSKRNL_MM_PAGING_HH
#ifndef __XTOSKRNL_MM_AMD64_PAGING_HH
#define __XTOSKRNL_MM_AMD64_PAGING_HH
#include <xtos.hh>
@@ -32,6 +32,7 @@ namespace MM
STATIC XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte);
STATIC XTAPI PMMPDE GetP5eAddress(IN PVOID Address);
STATIC XTAPI PVOID GetP5eVirtualAddress(IN PMMPTE P5ePointer);
STATIC XTAPI USHORT GetPageMapLevel();
STATIC XTAPI PFN_NUMBER GetPageFrameNumber(IN PMMPTE Pte);
STATIC XTAPI PMMPDE GetPdeAddress(IN PVOID Address);
STATIC XTAPI PVOID GetPdeVirtualAddress(IN PMMPXE PdePointer);
@@ -42,8 +43,6 @@ namespace MM
STATIC XTAPI PVOID GetPteVirtualAddress(IN PMMPXE PtePointer);
STATIC XTAPI PMMPXE GetPxeAddress(IN PVOID Address);
STATIC XTAPI PVOID GetPxeVirtualAddress(IN PMMPXE PxePointer);
STATIC XTAPI BOOLEAN GetXpaStatus();
STATIC XTAPI VOID InitializeSystemSpaceMapping(VOID);
STATIC XTAPI VOID InitializePageMapSupport(VOID);
STATIC XTAPI BOOLEAN PteValid(IN PMMPTE PtePointer);
STATIC XTAPI VOID SetNextEntry(IN PMMPTE Pte,
@@ -65,4 +64,4 @@ namespace MM
};
}
#endif /* __XTOSKRNL_MM_PAGING_HH */
#endif /* __XTOSKRNL_MM_AMD64_PAGING_HH */

63
xtoskrnl/includes/mm/i686/paging.hh Normal file
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@@ -0,0 +1,63 @@
/**
* PROJECT: ExectOS
* COPYRIGHT: See COPYING.md in the top level directory
* FILE: xtoskrnl/includes/mm/i686/paging.hh
* DESCRIPTION: Low level page management support for i686
* DEVELOPERS: Aiken Harris <harraiken91@gmail.com>
*/
#ifndef __XTOSKRNL_MM_I686_PAGING_HH
#define __XTOSKRNL_MM_I686_PAGING_HH
#include <xtos.hh>
/* Memory Manager */
namespace MM
{
class Paging
{
private:
STATIC PPAGEMAP PmlRoutines;
public:
STATIC XTAPI PMMPTE AdvancePte(IN PMMPTE Pte,
IN LONG Count);
STATIC XTAPI VOID ClearPte(IN PMMPTE PtePointer);
STATIC XTAPI VOID FlushTlb(VOID);
STATIC XTAPI ULONG_PTR GetEmptyPteList(VOID);
STATIC XTAPI BOOLEAN GetExtendedPhysicalAddressingStatus(VOID);
STATIC XTAPI ULONG_PTR GetNextEntry(IN PMMPTE Pte);
STATIC XTAPI PMMPTE GetNextPte(IN PMMPTE Pte);
STATIC XTAPI BOOLEAN GetOneEntry(IN PMMPTE Pte);
STATIC XTAPI USHORT GetPageMapLevel();
STATIC XTAPI PFN_NUMBER GetPageFrameNumber(IN PMMPTE Pte);
STATIC XTAPI PMMPDE GetPdeAddress(IN PVOID Address);
STATIC XTAPI PVOID GetPdeVirtualAddress(IN PMMPXE PdePointer);
STATIC XTAPI PMMPPE GetPpeAddress(IN PVOID Address);
STATIC XTAPI PVOID GetPpeVirtualAddress(IN PMMPXE PpePointer);
STATIC XTAPI PMMPTE GetPteAddress(IN PVOID Address);
STATIC XTAPI ULONG GetPteSize(VOID);
STATIC XTAPI PVOID GetPteVirtualAddress(IN PMMPXE PtePointer);
STATIC XTAPI VOID InitializePageMapSupport(VOID);
STATIC XTAPI BOOLEAN PteValid(IN PMMPTE PtePointer);
STATIC XTAPI VOID SetNextEntry(IN PMMPTE Pte,
IN ULONG_PTR Value);
STATIC XTAPI VOID SetOneEntry(IN PMMPTE Pte,
IN BOOLEAN Value);
STATIC XTAPI VOID SetPte(IN PMMPTE PtePointer,
IN PFN_NUMBER PageFrameNumber,
IN ULONG_PTR AttributesMask);
STATIC XTAPI VOID SetPteCaching(IN PMMPTE PtePointer,
IN BOOLEAN CacheDisable,
IN BOOLEAN WriteThrough);
STATIC XTFASTCALL VOID ZeroPages(IN PVOID Address,
IN ULONG Size);
private:
STATIC XTAPI PPAGEMAP GetPageMapBasicRoutines(VOID);
STATIC XTAPI PPAGEMAP GetPageMapXpaRoutines(VOID);
};
}
#endif /* __XTOSKRNL_MM_I686_PAGING_HH */

72
xtoskrnl/mm/amd64/paging.cc
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@@ -25,6 +25,78 @@ MM::Paging::GetExtendedPhysicalAddressingStatus(VOID)
return ((AR::CpuFunc::ReadControlRegister(4) & CR4_LA57) != 0) ? TRUE : FALSE;
}
/**
* Gets the address of the P5E (Page Map Level 5 Entry), that maps given address.
*
* @param Address
* Specifies the virtual address for which to retrieve the corresponding P5E.
*
* @return This routine returns the address of the P5E, or NULLPTR if LA57 is not enabled.
*
* @since XT 1.0
*/
XTAPI
PMMPDE
MM::Paging::GetP5eAddress(IN PVOID Address)
{
/* Return PDE address */
return PmlRoutines->GetP5eAddress(Address);
}
/**
* Gets the virtual address that is mapped by a given Page Map Level 5 Entry.
*
* @param P5ePointer
* Specifies the address of the P5E.
*
* @return This routine returns the virtual address mapped by the P5E, or NULLPTR if LA57 is not enabled.
*
* @since XT 1.0
*/
XTAPI
PVOID
MM::Paging::GetP5eVirtualAddress(IN PMMPTE P5ePointer)
{
/* Return PTE virtual address */
return PmlRoutines->GetP5eVirtualAddress(P5ePointer);
}
/**
* Gets the address of the PXE (Extended Page Entry), that maps given address.
*
* @param Address
* Specifies the virtual address for which to retrieve the corresponding PXE.
*
* @return This routine returns the address of the PXE.
*
* @since XT 1.0
*/
XTAPI
PMMPXE
MM::Paging::GetPxeAddress(IN PVOID Address)
{
/* Return PXE address */
return PmlRoutines->GetPxeAddress(Address);
}
/**
* Gets the virtual address that is mapped by a given Extended Page Entry.
*
* @param PxePointer
* Specifies the address of the PXE.
*
* @return This routine returns the virtual address mapped by the PXE.
*
* @since XT 1.0
*/
XTAPI
PVOID
MM::Paging::GetPxeVirtualAddress(IN PMMPXE PxePointer)
{
/* Return PXE virtual address */
return PmlRoutines->GetPxeVirtualAddress(PxePointer);
}
/**
* Fills a section of memory with zeroes like RtlZeroMemory(), but in more efficient way.
*

100
xtoskrnl/mm/paging.cc
View File

@@ -170,42 +170,6 @@ MM::Paging::GetOneEntry(IN PMMPTE Pte)
return PmlRoutines->GetOneEntry(Pte);
}
/**
* Gets the address of the P5E (Page Map Level 5 Entry), that maps given address.
*
* @param Address
* Specifies the virtual address for which to retrieve the corresponding P5E.
*
* @return This routine returns the address of the P5E, or NULLPTR if LA57 is not enabled.
*
* @since XT 1.0
*/
XTAPI
PMMPDE
MM::Paging::GetP5eAddress(IN PVOID Address)
{
/* Return PDE address */
return PmlRoutines->GetP5eAddress(Address);
}
/**
* Gets the virtual address that is mapped by a given Page Map Level 5 Entry.
*
* @param P5ePointer
* Specifies the address of the P5E.
*
* @return This routine returns the virtual address mapped by the P5E, or NULLPTR if LA57 is not enabled.
*
* @since XT 1.0
*/
XTAPI
PVOID
MM::Paging::GetP5eVirtualAddress(IN PMMPTE P5ePointer)
{
/* Return PTE virtual address */
return PmlRoutines->GetP5eVirtualAddress(P5ePointer);
}
/**
* Gets the page frame number from a corresponding PTE.
*
@@ -240,6 +204,20 @@ MM::Paging::GetPageMapBasicRoutines(VOID)
return &PageMapBasicRoutines;
}
/**
* Gets the current paging mode level.
*
* @return This routine returns 5 if 5-level paging (XPA) is enabled, otherwise 4 for 4-level paging.
*
* @since XT 1.0
*/
XTAPI
USHORT
MM::Paging::GetPageMapLevel()
{
return PmlRoutines->GetXpaStatus() ? 5 : 4;
}
/**
* Gets the page map routines for eXtended Physical Addressing (XPA) mode.
*
@@ -380,56 +358,6 @@ MM::Paging::GetPteVirtualAddress(IN PMMPTE PtePointer)
return PmlRoutines->GetPteVirtualAddress(PtePointer);
}
/**
* Gets the address of the PXE (Extended Page Entry), that maps given address.
*
* @param Address
* Specifies the virtual address for which to retrieve the corresponding PXE.
*
* @return This routine returns the address of the PXE.
*
* @since XT 1.0
*/
XTAPI
PMMPXE
MM::Paging::GetPxeAddress(IN PVOID Address)
{
/* Return PXE address */
return PmlRoutines->GetPxeAddress(Address);
}
/**
* Gets the virtual address that is mapped by a given Extended Page Entry.
*
* @param PxePointer
* Specifies the address of the PXE.
*
* @return This routine returns the virtual address mapped by the PXE.
*
* @since XT 1.0
*/
XTAPI
PVOID
MM::Paging::GetPxeVirtualAddress(IN PMMPXE PxePointer)
{
/* Return PXE virtual address */
return PmlRoutines->GetPxeVirtualAddress(PxePointer);
}
/**
* Gets the status of Extended Paging Address (XPA) mode.
*
* @return This routine returns TRUE if XPA is enabled, FALSE otherwise.
*
* @since XT 1.0
*/
XTAPI
BOOLEAN
MM::Paging::GetXpaStatus()
{
return PmlRoutines->GetXpaStatus();
}
/**
* Detects if eXtended Physical Addressing (XPA) is enabled and initializes page map support.
*