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Implement InterlockedComparePte and InterlockedCompareExchangePte to:

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1) Avoid all the casting currently being done
	2) Allow portability with other platforms so that the code can be potentially shared later.


svn path=/trunk/; revision=35364
This commit is contained in:
ReactOS Portable Systems Group 2008-08-16 01:58:59 +00:00
parent 08c7fe628b
commit 1a6f168245
2 changed files with 29 additions and 22 deletions
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7
reactos/ntoskrnl/include/internal/mm.h
View file

@ -164,6 +164,13 @@ typedef ULONG PFN_TYPE, *PPFN_TYPE;
(PAGE_WRITECOPY | \
PAGE_EXECUTE_WRITECOPY)
#define InterlockedCompareExchangePte(PointerPte, Exchange, Comperand) \
InterlockedCompareExchange((PLONG)(PointerPte), Exchange, Comperand)
#define InterlockedExchangePte(PointerPte, Value) \
InterlockedExchange((PLONG)(PointerPte), Value)
typedef struct
{
ULONG Entry[NR_SECTION_PAGE_ENTRIES];

44
reactos/ntoskrnl/mm/i386/page.c
View file

@ -331,7 +331,7 @@ MmGetPageTableForProcess(PEPROCESS Process, PVOID Address, BOOLEAN Create)
{
KEBUGCHECK(0);
}
if (0 == InterlockedCompareExchangeUL(&PageDir[PdeOffset], 0, 0))
if (0 == InterlockedCompareExchangePte(&PageDir[PdeOffset], 0, 0))
{
if (Create == FALSE)
{
@ -343,7 +343,7 @@ MmGetPageTableForProcess(PEPROCESS Process, PVOID Address, BOOLEAN Create)
{
KEBUGCHECK(0);
}
Entry = InterlockedCompareExchangeUL(&PageDir[PdeOffset], PFN_TO_PTE(Pfn) | PA_PRESENT | PA_READWRITE | PA_USER, 0);
Entry = InterlockedCompareExchangePte(&PageDir[PdeOffset], PFN_TO_PTE(Pfn) | PA_PRESENT | PA_READWRITE | PA_USER, 0);
if (Entry != 0)
{
MmReleasePageMemoryConsumer(MC_NPPOOL, Pfn);
@ -363,11 +363,11 @@ MmGetPageTableForProcess(PEPROCESS Process, PVOID Address, BOOLEAN Create)
return Pt + ADDR_TO_PTE_OFFSET(Address);
}
PageDir = (PULONG)MiAddressToPde(Address);
if (0 == InterlockedCompareExchangeUL(PageDir, 0, 0))
if (0 == InterlockedCompareExchangePte(PageDir, 0, 0))
{
if (Address >= MmSystemRangeStart)
{
if (0 == InterlockedCompareExchangeUL(&MmGlobalKernelPageDirectory[PdeOffset], 0, 0))
if (0 == InterlockedCompareExchangePte(&MmGlobalKernelPageDirectory[PdeOffset], 0, 0))
{
if (Create == FALSE)
{
@ -383,12 +383,12 @@ MmGetPageTableForProcess(PEPROCESS Process, PVOID Address, BOOLEAN Create)
{
Entry |= PA_GLOBAL;
}
if(0 != InterlockedCompareExchangeUL(&MmGlobalKernelPageDirectory[PdeOffset], Entry, 0))
if(0 != InterlockedCompareExchangePte(&MmGlobalKernelPageDirectory[PdeOffset], Entry, 0))
{
MmReleasePageMemoryConsumer(MC_NPPOOL, Pfn);
}
}
(void)InterlockedExchangeUL(PageDir, MmGlobalKernelPageDirectory[PdeOffset]);
InterlockedExchangePte(PageDir, MmGlobalKernelPageDirectory[PdeOffset]);
}
else
{
@ -401,7 +401,7 @@ MmGetPageTableForProcess(PEPROCESS Process, PVOID Address, BOOLEAN Create)
{
KEBUGCHECK(0);
}
Entry = InterlockedCompareExchangeUL(PageDir, PFN_TO_PTE(Pfn) | PA_PRESENT | PA_READWRITE | PA_USER, 0);
Entry = InterlockedCompareExchangePte(PageDir, PFN_TO_PTE(Pfn) | PA_PRESENT | PA_READWRITE | PA_USER, 0);
if (Entry != 0)
{
MmReleasePageMemoryConsumer(MC_NPPOOL, Pfn);
@ -476,7 +476,7 @@ MmDisableVirtualMapping(PEPROCESS Process, PVOID Address, BOOLEAN* WasDirty, PPF
do
{
Pte = *Pt;
} while (Pte != InterlockedCompareExchangeUL(Pt, Pte & ~PA_PRESENT, Pte));
} while (Pte != InterlockedCompareExchangePte(Pt, Pte & ~PA_PRESENT, Pte));
MiFlushTlb(Pt, Address);
WasValid = (PAGE_MASK(Pte) != 0);
@ -510,7 +510,7 @@ MmRawDeleteVirtualMapping(PVOID Address)
/*
* Set the entry to zero
*/
(void)InterlockedExchangeUL(Pt, 0);
InterlockedExchangePte(Pt, 0);
MiFlushTlb(Pt, Address);
}
}
@ -549,7 +549,7 @@ MmDeleteVirtualMapping(PEPROCESS Process, PVOID Address, BOOLEAN FreePage,
/*
* Atomically set the entry to zero and get the old value.
*/
Pte = InterlockedExchangeUL(Pt, 0);
Pte = InterlockedExchangePte(Pt, 0);
MiFlushTlb(Pt, Address);
@ -604,7 +604,7 @@ MmDeletePageFileMapping(PEPROCESS Process, PVOID Address,
/*
* Atomically set the entry to zero and get the old value.
*/
Pte = InterlockedExchangeUL(Pt, 0);
Pte = InterlockedExchangePte(Pt, 0);
MiFlushTlb(Pt, Address);
@ -659,7 +659,7 @@ MmIsAccessedAndResetAccessPage(PEPROCESS Process, PVOID Address)
do
{
Pte = *Pt;
} while (Pte != InterlockedCompareExchangeUL(Pt, Pte & ~PA_ACCESSED, Pte));
} while (Pte != InterlockedCompareExchangePte(Pt, Pte & ~PA_ACCESSED, Pte));
if (Pte & PA_ACCESSED)
{
@ -696,7 +696,7 @@ MmSetCleanPage(PEPROCESS Process, PVOID Address)
do
{
Pte = *Pt;
} while (Pte != InterlockedCompareExchangeUL(Pt, Pte & ~PA_DIRTY, Pte));
} while (Pte != InterlockedCompareExchangePte(Pt, Pte & ~PA_DIRTY, Pte));
if (Pte & PA_DIRTY)
{
@ -730,7 +730,7 @@ MmSetDirtyPage(PEPROCESS Process, PVOID Address)
do
{
Pte = *Pt;
} while (Pte != InterlockedCompareExchangeUL(Pt, Pte | PA_DIRTY, Pte));
} while (Pte != InterlockedCompareExchangePte(Pt, Pte | PA_DIRTY, Pte));
if (!(Pte & PA_DIRTY))
{
MiFlushTlb(Pt, Address);
@ -757,7 +757,7 @@ MmEnableVirtualMapping(PEPROCESS Process, PVOID Address)
do
{
Pte = *Pt;
} while (Pte != InterlockedCompareExchangeUL(Pt, Pte | PA_PRESENT, Pte));
} while (Pte != InterlockedCompareExchangePte(Pt, Pte | PA_PRESENT, Pte));
if (!(Pte & PA_PRESENT))
{
MiFlushTlb(Pt, Address);
@ -859,7 +859,7 @@ MmCreateVirtualMappingForKernel(PVOID Address,
{
KEBUGCHECK(0);
}
(void)InterlockedExchangeUL(Pt, PFN_TO_PTE(Pages[i]) | Attributes);
InterlockedExchangePte(Pt, PFN_TO_PTE(Pages[i]) | Attributes);
}
return(STATUS_SUCCESS);
@ -899,7 +899,7 @@ MmCreatePageFileMapping(PEPROCESS Process,
{
MmMarkPageUnmapped(PTE_TO_PFN((Pte)));
}
(void)InterlockedExchangeUL(Pt, SwapEntry << 1);
InterlockedExchangePte(Pt, SwapEntry << 1);
if (Pte != 0)
{
MiFlushTlb(Pt, Address);
@ -1018,7 +1018,7 @@ MmCreateVirtualMappingUnsafe(PEPROCESS Process,
{
MmMarkPageUnmapped(PTE_TO_PFN((Pte)));
}
(void)InterlockedExchangeUL(Pt, PFN_TO_PTE(Pages[i]) | Attributes);
InterlockedExchangePte(Pt, PFN_TO_PTE(Pages[i]) | Attributes);
if (Pte != 0)
{
if (Address > MmSystemRangeStart ||
@ -1138,7 +1138,7 @@ MmSetPageProtect(PEPROCESS Process, PVOID Address, ULONG flProtect)
{
KEBUGCHECK(0);
}
InterlockedExchange((PLONG)Pt, PAGE_MASK(*Pt) | Attributes | (*Pt & (PA_ACCESSED|PA_DIRTY)));
InterlockedExchangePte(Pt, PAGE_MASK(*Pt) | Attributes | (*Pt & (PA_ACCESSED|PA_DIRTY)));
MiFlushTlb(Pt, Address);
}
@ -1243,7 +1243,7 @@ MmChangeHyperspaceMapping(PVOID Address, PFN_TYPE NewPage)
ASSERT (IS_HYPERSPACE(Address));
Entry = InterlockedExchange((PLONG)MiAddressToPte(Address), PFN_TO_PTE(NewPage) | PA_PRESENT | PA_READWRITE);
Entry = InterlockedExchangePte(MiAddressToPte(Address), PFN_TO_PTE(NewPage) | PA_PRESENT | PA_READWRITE);
Pfn = PTE_TO_PFN(Entry);
__invlpg(Address);
@ -1259,7 +1259,7 @@ MmDeleteHyperspaceMapping(PVOID Address)
ASSERT (IS_HYPERSPACE(Address));
Entry = InterlockedExchange((PLONG)MiAddressToPte(Address), 0);
Entry = InterlockedExchangePte(MiAddressToPte(Address), 0);
Pfn = PTE_TO_PFN(Entry);
__invlpg(Address);
@ -1293,7 +1293,7 @@ MmUpdatePageDir(PEPROCESS Process, PVOID Address, ULONG Size)
{
if (Offset != ADDR_TO_PDE_OFFSET(PAGETABLE_MAP))
{
(void)InterlockedCompareExchangeUL(&Pde[Offset], MmGlobalKernelPageDirectory[Offset], 0);
InterlockedCompareExchangePte(&Pde[Offset], MmGlobalKernelPageDirectory[Offset], 0);
}
}
if (Pde != (PULONG)PAGEDIRECTORY_MAP)