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windows-nt/Source/XPSP1/NT/base/tools/kdexts2/pte.c

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2020-09-26 03:20:57 -05:00
/*++
Copyright (c) 1992 Microsoft Corporation
Module Name:
pte.c
Abstract:
WinDbg Extension Api
Author:
Lou Perazzoli (LouP) 15-Feb-1992
Environment:
User Mode.
Revision History:
--*/
#include "precomp.h"
#include "i386.h"
#include "ia64.h"
#include "amd64.h"
ULONG64 MmNonPagedPoolEnd=0;
ULONG64 MmSubsectionBase=0;
ULONG64 KiIA64VaSignedFill;
ULONG64 KiIA64PtaBase;
ULONG64 KiIA64PtaSign;
ULONG
DbgGetPageFileHigh(
ULONG64 Pte
);
////////////////////////////////////////////////////////////////////////////////
//
// I386
//
////////////////////////////////////////////////////////////////////////////////
#define PaeGetPdeAddressX86(va) ((ULONG64) (LONG64) (LONG) (PDE_BASE_X86 + ((((ULONG)(va)) >> 21) << 3)))
#define MiGetPdeAddressX86(va) ((ULONG64) (LONG64) (LONG) (((((ULONG)(va)) >> 22) << 2) + PDE_BASE_X86))
#define PaeGetVirtualAddressMappedByPteX86(PTE) (((ULONG64)(PTE) << 9))
#define PaeGetPteAddressX86(va) ((ULONG64)(PTE_BASE_X86 + ((((ULONG)(va)) >> 12) << 3)))
#define MiGetPteAddressX86(va) (((((ULONG) (va)) >> 12) << 2) + PTE_BASE_X86)
#define MiGetPteOffsetX86(va) ((((ULONG) (va)) >> 12) & 0x3ff)
#define MiGetVirtualAddressMappedByPteX86(PTE) ((ULONG64) (LONG64) (LONG) ((PTE) << 10))
////////////////////////////////////////////////////////////////////////////////
//
// AMD64
//
////////////////////////////////////////////////////////////////////////////////
#define AMD64_VA_MASK (((ULONG64)1 << AMD64_VA_BITS) - 1)
#define MiGetPteAddressAMD64(va) ((((((ULONG64)(va) & AMD64_VA_MASK) >> PTI_SHIFT_AMD64) << PTE_SHIFT_AMD64) + PTE_BASE_AMD64))
#define MiGetPdeAddressAMD64(va) ((((((ULONG64)(va) & AMD64_VA_MASK) >> PDI_SHIFT_AMD64) << PTE_SHIFT_AMD64) + PDE_BASE_AMD64))
#define MiGetPpeAddressAMD64(va) ((((((ULONG64)(va) & AMD64_VA_MASK) >> PPI_SHIFT_AMD64) << PTE_SHIFT_AMD64) + PPE_BASE_AMD64))
#define MiGetPxeAddressAMD64(va) ((((((ULONG64)(va) & AMD64_VA_MASK) >> PXI_SHIFT_AMD64) << PTE_SHIFT_AMD64) + PXE_BASE_AMD64))
#define MiGetPteOffsetAMD64(va) ((((ULONG_PTR) (va)) >> 12) & 0x3ff)
#define MiGetVirtualAddressMappedByPteAMD64(PTE) \
((ULONG64)((LONG64)(((LONG64)(PTE) - PTE_BASE_AMD64) << (PAGE_SHIFT_AMD64 + AMD64_VA_SHIFT - PTE_SHIFT_AMD64)) >> AMD64_VA_SHIFT))
////////////////////////////////////////////////////////////////////////////////
//
// IA64
//
////////////////////////////////////////////////////////////////////////////////
//
// MiGetPdeAddress returns the address of the PTE which maps the
// given virtual address. Note we must redefine some of the MM
// macros here because they cast values to pointers which does not work
// on systems where pointers are only 32 bits.
//
VOID
DbgGetPteBaseIA64(
VOID
)
{
ULONG64 PtaValue;
ULONG i;
if (KiIA64PtaBase != 0) {
return;
}
if (g_ExtData == NULL ||
g_ExtData->lpVtbl->
ReadProcessorSystemData(g_ExtData, 0,
DEBUG_DATA_BASE_TRANSLATION_VIRTUAL_OFFSET,
&PtaValue, sizeof(PtaValue), NULL) != S_OK) {
PtaValue = (ULONG64) GetExpression("@pta");
}
KiIA64PtaBase = PtaValue & ~0xffffUI64;
KiIA64VaSignedFill =
(KiIA64PtaBase << (PAGE_SHIFT_IA64 - PTE_SHIFT_IA64)) & ~VRN_MASK_IA64;
KiIA64PtaSign = KiIA64PtaBase;
for (i = 0; i < 64; i += 1) {
KiIA64PtaSign >>= 1;
if (KiIA64PtaSign & 1) {
KiIA64PtaSign = (ULONG64)1 << i;
break;
}
}
}
ULONG64
MiGetPteAddressIA64 (
IN ULONG64 Va
)
{
DbgGetPteBaseIA64();
if (((((ULONG64)(Va)) & PDE_TBASE_IA64) == PDE_TBASE_IA64) &&
((((ULONG64)(Va)) & ~(VRN_MASK_IA64|PDE_TBASE_IA64)) < PageSize)) {
return (ULONG64) ((((ULONG64)(Va)) & VRN_MASK_IA64) |
(PDE_TBASE_IA64 + PageSize - GetTypeSize("nt!_MMPTE")));
}
return (ULONG64) (((((ULONG64)(Va)) & VRN_MASK_IA64)) |
((((((ULONG64)(Va)) >> PTI_SHIFT_IA64) << PTE_SHIFT_IA64) & (~(PTE_BASE_IA64|VRN_MASK_IA64))) + PTE_BASE_IA64));
}
ULONG64
MiGetPdeAddressIA64 (
IN ULONG64 Va
)
{
DbgGetPteBaseIA64();
if (((((ULONG64)(Va)) & PDE_BASE_IA64) == PDE_BASE_IA64) &&
((((ULONG64)(Va)) & ~(VRN_MASK_IA64|PDE_BASE_IA64)) < ((ULONG64)1 << PDI_SHIFT_IA64))) {
return (ULONG64) ((((ULONG64)(Va)) & VRN_MASK_IA64) |
(PDE_TBASE_IA64 + PageSize - GetTypeSize("nt!_MMPTE")));
}
if (((((ULONG64)(Va)) & PDE_TBASE_IA64) == PDE_TBASE_IA64) &&
((((ULONG64)(Va)) & ~(VRN_MASK_IA64|PDE_TBASE_IA64)) < PageSize)) {
return (ULONG64) ((((ULONG64)(Va)) & VRN_MASK_IA64) |
(PDE_TBASE_IA64 + PageSize - GetTypeSize("nt!_MMPTE")));
}
return (ULONG64) (((((ULONG64)(Va)) & VRN_MASK_IA64)) |
((((((ULONG64)(Va)) >> PDI_SHIFT_IA64) << PTE_SHIFT_IA64) & (~(PDE_BASE_IA64|VRN_MASK_IA64))) + PDE_BASE_IA64));
}
ULONG64
MiGetPpeAddressIA64 (
IN ULONG64 Va
)
{
DbgGetPteBaseIA64();
if ((((ULONG64)(Va) & PTE_BASE_IA64) == PTE_BASE_IA64) &&
((((ULONG64)(Va)) & ~(VRN_MASK_IA64|PTE_BASE_IA64)) < ((ULONG64)1 << PDI1_SHIFT_IA64))) {
return (ULONG64) (((ULONG64)Va & VRN_MASK_IA64) |
(PDE_TBASE_IA64 + PageSize - GetTypeSize("nt!_MMPTE")));
}
if (((((ULONG64)(Va)) & PDE_BASE_IA64) == PDE_BASE_IA64) &&
((((ULONG64)(Va)) & ~(VRN_MASK_IA64|PDE_BASE_IA64)) < ((ULONG64)1 << PDI_SHIFT_IA64))) {
return (ULONG64) ((((ULONG64)(Va)) & VRN_MASK_IA64) |
(PDE_TBASE_IA64 + PageSize - GetTypeSize("nt!_MMPTE")));
}
if (((((ULONG64)(Va)) & PDE_TBASE_IA64) == PDE_TBASE_IA64) &&
((((ULONG64)(Va)) & ~(VRN_MASK_IA64|PDE_TBASE_IA64)) < PageSize)) {
return (ULONG64) ((((ULONG64)(Va)) & VRN_MASK_IA64) |
(PDE_TBASE_IA64 + PageSize - GetTypeSize("nt!_MMPTE")));
}
return (ULONG64) (((((ULONG64)(Va)) & VRN_MASK_IA64)) |
((((((ULONG64)(Va)) >> PDI1_SHIFT_IA64) << PTE_SHIFT_IA64) &
(~(PDE_TBASE_IA64|VRN_MASK_IA64))) + PDE_TBASE_IA64));
}
ULONG64
MiGetVirtualAddressMappedByPteIA64(
IN ULONG64 PTE
)
{
DbgGetPteBaseIA64();
return (((ULONG64)(PTE) & PTA_SIGN_IA64) ?
(ULONG64)(((ULONG64)(PTE) & VRN_MASK_IA64) | VA_FILL_IA64 |
(((ULONG64)(PTE)-PTE_BASE_IA64) << (PAGE_SHIFT_IA64 - PTE_SHIFT_IA64))) :
(ULONG64)(((ULONG64)(PTE) & VRN_MASK_IA64) | (((ULONG64)(PTE)-PTE_BASE_IA64) << (PAGE_SHIFT_IA64 - PTE_SHIFT_IA64))));
}
#define MiGetSubsectionAddress(lpte) \
(((lpte)->u.Subsect.WhichPool == 1) ? \
((ULONG64)((ULONG64)MmSubsectionBase + \
((ULONG64)(lpte)->u.Subsect.SubsectionAddress))) \
: \
((ULONG64)((ULONG64)MM_NONPAGED_POOL_END - \
((ULONG64)(lpte)->u.Subsect.SubsectionAddress))))
#define MiPteToProto(lpte) \
((ULONG64) ((ULONG64)((lpte)->u.Proto.ProtoAddress) + MmProtopte_Base))
////////////////////////////////////////////////////////////////////////////////
//
// AMD64
//
////////////////////////////////////////////////////////////////////////////////
VOID
DbgPrintProtection (
ULONG Protection
)
{
if (Protection == 0) {
dprintf("0");
return;
}
dprintf ("%x - ", Protection);
if (Protection == MM_NOACCESS) {
dprintf("No Access");
} else if (Protection == MM_DECOMMIT) {
dprintf("Decommitted");
} else {
switch (Protection & 7) {
case MM_READONLY: dprintf("Readonly"); break;
case MM_EXECUTE: dprintf("Execute"); break;
case MM_EXECUTE_READ: dprintf("ExecuteRead"); break;
case MM_READWRITE: dprintf("ReadWrite"); break;
case MM_WRITECOPY: dprintf("ReadWriteCopy"); break;
case MM_EXECUTE_READWRITE: dprintf("ReadWriteExecute"); break;
case MM_EXECUTE_WRITECOPY: dprintf("ReadWriteCopyExecute "); break;
default: ;
}
if (Protection & MM_NOCACHE) {
dprintf(" UC");
}
if (Protection & MM_GUARD_PAGE) {
dprintf(" G");
}
}
}
ULONG64
DbgPteLookupNeeded (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
return MI_PTE_LOOKUP_NEEDED_X86;
case IMAGE_FILE_MACHINE_AMD64:
return MI_PTE_LOOKUP_NEEDED_AMD64;
break;
case IMAGE_FILE_MACHINE_IA64:
return MI_PTE_LOOKUP_NEEDED_IA64;
default:
break;
}
return 0;
}
LOGICAL
DbgPteIsDemandZero (
ULONG64 CurrentPte
)
{
ULONG Protection = 0;
ULONG64 CurrentPteContents = 0;
GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Long", CurrentPteContents);
GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Soft.Protection", Protection);
//
// The caller has already ensured that the valid, prototype & transition
// bits in the PTE are all zero.
//
if (DbgGetPageFileHigh (CurrentPte) != 0) {
return FALSE;
}
if ((Protection != 0) &&
(Protection != MM_NOACCESS) &&
(Protection != MM_DECOMMIT)) {
return TRUE;
}
return FALSE;
}
#define PMMPTEx ULONG64
#define PACKET_MAX_SIZE 4000
typedef struct _SYS_PTE_LIST {
ULONG64 Next;
ULONG64 Previous;
ULONG64 Value;
ULONG Count;
} SYS_PTE_LIST, *PSYS_PTE_LIST;
ULONG MmKseg2Frame;
ULONG
MiGetSysPteListDelimiter (
VOID
)
/*++
Routine Description:
The platform-specific system PTE list delimiter is returned.
Arguments:
None.
--*/
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
if (PaeEnabled) {
return 0xFFFFFFFF;
}
return 0xFFFFF;
case IMAGE_FILE_MACHINE_AMD64:
return 0xFFFFFFFF;
case IMAGE_FILE_MACHINE_IA64:
return 0xFFFFFFFF;
default:
break;
}
return 0;
}
ULONG64
MiGetFreeCountFromPteList (
IN ULONG64 Pte
)
/*++
Routine Description:
The specified PTE points to a free list header in the
system PTE pool. It returns the number of free entries
in this block.
Arguments:
Pte - the PTE to examine.
--*/
{
ULONG OneEntry;
ULONG64 NextEntry;
GetFieldValue(Pte, "MMPTE", "u.List.OneEntry", OneEntry);
GetFieldValue(Pte + GetTypeSize("nt!_MMPTE"), "MMPTE", "u.List.NextEntry",NextEntry);
return (( OneEntry) ?
1 :
NextEntry);
}
DECLARE_API( sysptes )
/*++
Routine Description:
Dumps system PTEs.
Arguments:
args - Flags
Return Value:
None
--*/
{
ULONG ExtraPtesUnleashed;
ULONG MaxPteRead;
ULONG TotalNumberOfSystemPtes;
ULONG64 NonPagedSystemStart;
ULONG64 ExtraResourceStart;
ULONG64 ExtraPteStart;
ULONG NumberOfExtraPtes;
ULONG PteListDelimiter;
ULONG result;
ULONG64 nextfreepte;
ULONG Flags;
ULONG LastCount;
ULONG ReadCount;
ULONG64 next;
ULONG64 Pte;
ULONG64 IndexBase;
ULONG64 PteBase;
ULONG64 PteBase2;
ULONG64 PteArrayReal;
ULONG64 PteArray2Real;
PCHAR PteArray2;
ULONG64 PteEnd;
ULONG64 IndexBias;
ULONG64 FreeStart;
ULONG NumberOfSystemPtes;
ULONG NumberOfPtesToCover;
PCHAR PteArray;
HANDLE PteHandle;
ULONG64 PageCount;
ULONG64 free;
ULONG64 totalFree;
ULONG64 largeFree;
ULONG i;
ULONG64 Flink;
ULONG64 PteHeaderAddress;
ULONG FreeSysPteListBySize[MM_SYS_PTE_TABLES_MAX];
ULONG SysPteIndex [MM_SYS_PTE_TABLES_MAX];
ULONG PteSize;
PVOID PteData;
PSYS_PTE_LIST List;
CHAR Buffer[256];
ULONG64 displacement;
INIT_API();
List = NULL;
PteData = NULL;
PteArray = NULL;
PteHandle = (HANDLE)0;
Flags = 0;
sscanf(args,"%lx",&Flags);
if (Flags & 8) {
//
// Dump the nonpaged pool expansion free PTE list only.
//
IndexBias = GetPointerValue ("nt!MmSystemPteBase");
PteSize = GetTypeSize ("nt!_MMPTE");
i = 0;
totalFree = 0;
largeFree = 0;
PteData = LocalAlloc (LMEM_FIXED, PteSize * 2);
if (!PteData) {
dprintf("Unable to malloc PTE data\n");
EXIT_API();
return E_INVALIDARG;
}
FreeStart = GetExpression ("nt!MmFirstFreeSystemPte") + PteSize;
if ( !ReadMemory( FreeStart,
PteData,
PteSize,
&result) ) {
dprintf("%08p: Unable to get MmFirstFreeSystemPte\n",FreeStart);
LocalFree(PteData);
EXIT_API();
return E_INVALIDARG;
}
GetFieldValue(FreeStart, "nt!_MMPTE", "u.List.NextEntry", FreeStart);
next = FreeStart;
PteListDelimiter = MiGetSysPteListDelimiter ();
while (next != PteListDelimiter) {
if ( CheckControlC() ) {
goto Bail;
}
nextfreepte = IndexBias + next * PteSize;
if ( !ReadMemory( nextfreepte,
PteData,
PteSize * 2,
&result) ) {
dprintf("%16I64X: Unable to get nonpaged PTE\n", nextfreepte);
break;
}
free = MiGetFreeCountFromPteList (nextfreepte);
if (Flags & 1) {
dprintf(" free ptes: %8p number free: %5I64ld.\n",
nextfreepte,
free);
}
if (free > largeFree) {
largeFree = free;
}
totalFree += free;
i += 1;
GetFieldValue(nextfreepte, "nt!_MMPTE", "u.List.NextEntry", next);
// next = MiGetNextFromPteList ((PMMPTE)PteData);
}
dprintf("\n free blocks: %ld total free: %I64ld largest free block: %I64ld\n\n",
i, totalFree, largeFree);
LocalFree(PteData);
EXIT_API();
return E_INVALIDARG;
}
if (Flags & 4) {
PteHeaderAddress = GetExpression( "nt!MiPteHeader" );
if ( GetFieldValue( PteHeaderAddress,
"nt!_SYSPTES_HEADER",
"Count",
NumberOfSystemPtes) ) {
dprintf("%08p: Unable to get System PTE lock consumer information\n",
PteHeaderAddress);
}
else {
dprintf("\n0x%I64x System PTEs allocated to mapping locked pages\n\n",
NumberOfSystemPtes);
dprintf("VA MDL PageCount Caller/CallersCaller\n");
//
// Dump the MDL and PTE addresses and 2 callers.
//
GetFieldValue( PteHeaderAddress,"SYSPTES_HEADER","ListHead.Flink", Flink);
for (PageCount = 0; PageCount < NumberOfSystemPtes; ) {
ULONG64 Count;
if (Flink == PteHeaderAddress) {
dprintf("early finish (%I64u) during syspte tracker dumping\n",
PageCount);
break;
}
if ( CheckControlC() ) {
break;
}
if ( GetFieldValue( Flink,
"nt!_PTE_TRACKER",
"Count",
Count) ) {
dprintf("%08p: Unable to get System PTE individual lock consumer information\n",
Flink);
break;
}
InitTypeRead(Flink, nt!_PTE_TRACKER);
dprintf("%8p %8p %8I64lx ",
ReadField(SystemVa),
ReadField(Mdl),
Count);
Buffer[0] = '!';
Flink = ReadField(ListEntry.Flink);
GetSymbol (ReadField(CallingAddress),
(PCHAR)Buffer,
&displacement);
dprintf("%s", Buffer);
if (displacement) {
dprintf( "+0x%1p", displacement );
}
dprintf("/");
Buffer[0] = '!';
GetSymbol (ReadField(CallersCaller),
(PCHAR)Buffer,
&displacement);
dprintf("%s", Buffer);
if (displacement) {
dprintf( "+0x%1p", displacement );
}
dprintf("\n");
PageCount += Count;
}
}
if ((Flags & ~4) == 0) {
//
// no other flags specified, so just return.
//
EXIT_API();
return E_INVALIDARG;
}
}
dprintf("\nSystem PTE Information\n");
PteBase = GetPointerValue ("nt!MmSystemPtesStart");
PteEnd = GetPointerValue ("nt!MmSystemPtesEnd");
IndexBias = GetPointerValue ("nt!MmSystemPteBase");
NumberOfSystemPtes = GetUlongValue ("nt!MmNumberOfSystemPtes");
NonPagedSystemStart = GetPointerValue ("nt!MmNonPagedSystemStart");
PteSize = GetTypeSize ("nt!_MMPTE");
NumberOfExtraPtes = 0;
NumberOfPtesToCover = (ULONG) ((PteEnd - PteBase + 1) / PteSize);
//
// The system PTEs may exist in 2 separate virtual address ranges.
//
// See if there are extra resources, if so then see if they are being
// used for system PTEs (as opposed to system cache, etc).
//
ExtraPtesUnleashed = 0;
ExtraPtesUnleashed = GetUlongValue ("MiAddPtesCount");
if (ExtraPtesUnleashed != 0) {
ExtraResourceStart = GetExpression ("nt!MiExtraResourceStart");
if (ExtraResourceStart != 0) {
NumberOfExtraPtes = GetUlongValue ("MiExtraPtes1");
if (NumberOfExtraPtes != 0) {
if (!ReadPointer(ExtraResourceStart,&ExtraPteStart)) {
dprintf("%016I64X: Unable to read PTE start %p\n",ExtraResourceStart);
goto Bail;
}
}
}
}
TotalNumberOfSystemPtes = (ULONG) (NumberOfSystemPtes + NumberOfExtraPtes);
dprintf(" Total System Ptes %ld\n", TotalNumberOfSystemPtes);
free = GetExpression( "nt!MmSysPteIndex" );
if ( !ReadMemory( free,
&SysPteIndex[0],
sizeof(ULONG) * MM_SYS_PTE_TABLES_MAX,
&result) ) {
dprintf("%08p: Unable to get PTE index\n",free);
goto Bail;
}
free = GetExpression( "nt!MmSysPteListBySizeCount" );
if ( !ReadMemory( free,
&FreeSysPteListBySize[0],
sizeof (FreeSysPteListBySize),
&result) ) {
dprintf("%08p: Unable to get free PTE index\n",free);
goto Bail;
}
for (i = 0; i < MM_SYS_PTE_TABLES_MAX; i += 1 ) {
dprintf(" SysPtes list of size %ld has %ld free\n",
SysPteIndex[i],
FreeSysPteListBySize[i]);
}
dprintf(" \n");
dprintf(" starting PTE: %016I64X\n", PteBase);
dprintf(" ending PTE: %016I64X\n", PteEnd);
PteHandle = LocalAlloc(LMEM_MOVEABLE, NumberOfPtesToCover * PteSize);
if (!PteHandle) {
dprintf("Unable to get allocate memory of %ld bytes\n",
NumberOfPtesToCover * PteSize);
goto Bail;
}
MaxPteRead = ((PACKET_MAX_SIZE/PteSize)-1);
PteArray = LocalLock(PteHandle);
PteArrayReal = PteBase;
//
// If the ranges are discontiguous, zero the piece(s) in the middle.
//
if (NumberOfExtraPtes != 0) {
RtlZeroMemory (PteArray, NumberOfPtesToCover * PteSize);
}
for (PageCount = 0; PageCount < NumberOfExtraPtes; PageCount += ReadCount) {
if ( CheckControlC() ) {
goto Bail;
}
dprintf("loading (%d%% complete)\r", (PageCount * 100)/ TotalNumberOfSystemPtes);
ReadCount = (ULONG) (NumberOfExtraPtes - PageCount > MaxPteRead ?
MaxPteRead :
NumberOfExtraPtes - PageCount + 1);
Pte = (PteBase + PageCount * PteSize);
if ( !ReadMemory( Pte,
(PCHAR)PteArray + PageCount * PteSize,
ReadCount * PteSize,
&result) ) {
dprintf("Unable to get system pte block - "
"address %p - count %lu - page %lu\n",
Pte, ReadCount, PageCount);
goto Bail;
}
}
LastCount = (ULONG) PageCount;
if (NumberOfSystemPtes != 0) {
if (NumberOfExtraPtes != 0) {
PteBase2 = DbgGetPteAddress (NonPagedSystemStart);
}
else {
PteBase2 = PteBase;
}
PteArray2 = (PteArray + (ULONG) (PteBase2 - PteBase));
PteArray2Real = PteBase2;
for (PageCount = 0; (PageCount < NumberOfSystemPtes); PageCount += ReadCount) {
if ( CheckControlC() ) {
goto Bail;
}
dprintf("loading (%d%% complete)\r", ((LastCount + PageCount) * 100)/ TotalNumberOfSystemPtes);
ReadCount = (ULONG) (NumberOfSystemPtes - PageCount > MaxPteRead ?
MaxPteRead :
NumberOfSystemPtes - PageCount + 1);
Pte = (PteBase2 + PageCount * PteSize);
if ( !ReadMemory( Pte,
PteArray2 + PageCount * PteSize,
ReadCount * PteSize,
&result) ) {
dprintf("Unable to get system pte block2 - "
"address %p - count %lu - page %lu\n",
Pte, ReadCount, PageCount);
goto Bail;
}
}
}
dprintf("\n");
//
// Now we have a local copy: let's take a look.
//
//
// Walk the free list.
//
IndexBase = (PteBase - IndexBias) / PteSize;
totalFree = 0;
i = 0;
largeFree = 0;
FreeStart = GetExpression ("nt!MmFirstFreeSystemPte");
if ( GetFieldValue( FreeStart, "nt!_MMPTE", "u.List.NextEntry", next) ) {
dprintf("%08p: Unable to get MmFirstFreeSystemPte\n",FreeStart);
goto Bail;
}
FreeStart = next;
PteListDelimiter = MiGetSysPteListDelimiter ();
while (next != PteListDelimiter) {
if ( CheckControlC() ) {
goto Bail;
}
free = MiGetFreeCountFromPteList ((PteArrayReal + (next - IndexBase)* PteSize));
if (Flags & 1) {
dprintf(" free ptes: %8p number free: %5I64ld.\n",
PteBase + (next - IndexBase) * PteSize,
free);
}
if (free > largeFree) {
largeFree = free;
}
totalFree += free;
i += 1;
GetFieldValue ((PteArrayReal + (next - IndexBase) * PteSize),
"nt!_MMPTE", "u.List.NextEntry", next);
}
dprintf("\n free blocks: %ld total free: %I64ld largest free block: %I64ld\n\n",
i, totalFree, largeFree);
#if 0
//
// Walk through the array and sum up the usage on a per physical
// page basis.
//
List = VirtualAlloc (NULL,
(ULONG) NumberOfPtes * sizeof(SYS_PTE_LIST),
MEM_COMMIT | MEM_RESERVE,
PAGE_READWRITE);
if (List == NULL) {
dprintf("alloc failed %lx\n",GetLastError());
goto Bail;
}
RtlZeroMemory (List, (ULONG) NumberOfPtes * sizeof(SYS_PTE_LIST));
GetBitFieldOffset("nt!_MMPTE", "u.Hard.PageFrameNumber", &PfnOff, &PfnSz);
free = 0;
next = 0;
List[0].Value = (ULONG64) -1;
List[0].Previous = 0xffffff;
first = 0;
for (i = 0; i < NumberOfPtes ; i += 1) {
ULONG64 lPte = *((PULONG64) (PteArray + i * PteSize));
Page =0;
if ((lPte >> ValidOff) & 1) {
Page = GetBits(lPte, PfnOff, PfnSz); // DbgGetFrameNumber (PteArray + i * PteSize);
}
if (!(i%100)) dprintf("%c\r",rot[(i/100) % 4]);
if (Page != 0) {
// dprintf("Adding PTE @ %p, Pfn %p\n", PteArrayReal + i*PteSize, Page);
next = first;
while (Page > List[next].Value) {
next = List[next].Next;
}
if (List[next].Value == Page) {
List[next].Count += 1;
} else {
free += 1;
List[free].Next = next;
List[free].Value = Page;
List[free].Count = 1;
List[free].Previous = List[next].Previous;
if (next == first) {
first = free;
} else {
List[List[next].Previous].Next = free;
}
List[next].Previous = free;
}
}
if ( CheckControlC() ) {
goto Bail;
}
}
next = first;
dprintf (" Page Count\n");
while (List[next].Value != (ULONG64) -1) {
if ((Flags & 2) || (List[next].Count > 1)) {
dprintf (" %8p %5ld.\n", List[next].Value, List[next].Count);
}
next = List[next].Next;
if ( CheckControlC() ) {
goto Bail;
}
}
#endif
Bail:
if (PteArray) {
LocalUnlock(PteArray);
if (PteHandle) {
LocalFree((void *)PteHandle);
}
}
if (List) {
VirtualFree (List, 0, MEM_RELEASE);
}
EXIT_API();
return S_OK;
}
ULONG64
DbgGetFrameNumber(
ULONG64 Pte
)
{
ULONG Valid=0;
ULONG Prototype=0;
ULONG Transition=0;
ULONG64 PageFrameNumber=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.Valid", Valid);
if (Valid) {
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.PageFrameNumber", PageFrameNumber);
}
else {
GetFieldValue(Pte, "nt!_MMPTE", "u.Soft.Prototype", Prototype);
if (Prototype == 0) {
GetFieldValue(Pte, "nt!_MMPTE", "u.Soft.Transition", Transition);
if (Transition == 1) {
GetFieldValue(Pte, "_MMPTE", "u.Trans.PageFrameNumber", PageFrameNumber);
}
else {
// Must be pagefile or demand zero.
GetFieldValue(Pte, "nt!_MMPTE", "u.Soft.PageFileHigh", PageFrameNumber);
}
}
}
return PageFrameNumber;
}
ULONG
DbgGetOwner(
ULONG64 Pte
)
{
ULONG Owner=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.Owner", Owner);
return Owner;
}
ULONG
DbgGetValid(
ULONG64 Pte
)
{
ULONG Valid=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.Valid", Valid);
return Valid;
}
ULONG
DbgGetDirty(
ULONG64 Pte
)
{
ULONG Dirty=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.Dirty", Dirty);
return Dirty;
}
ULONG
DbgGetAccessed(
ULONG64 Pte
)
{
ULONG Accessed=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.Accessed", Accessed);
return Accessed;
}
ULONG
DbgGetWrite(
ULONG64 Pte
)
{
ULONG Write=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.Write", Write);
return Write;
}
ULONG
DbgGetExecute(
ULONG64 Pte
)
{
ULONG Execute=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.Execute", Execute);
return Execute;
}
ULONG
DbgGetCopyOnWrite(
ULONG64 Pte
)
{
ULONG CopyOnWrite=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Hard.CopyOnWrite", CopyOnWrite);
return CopyOnWrite;
}
ULONG
DbgGetPageFileHigh(
ULONG64 Pte
)
{
ULONG64 PageFileHigh=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Soft.PageFileHigh", PageFileHigh);
return (ULONG) PageFileHigh;
}
ULONG
DbgGetPageFileLow(
ULONG64 Pte
)
{
ULONG PageFileLow=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Soft.PageFileLow", PageFileLow);
return PageFileLow;
}
ULONG64
DbgPteToProto(
ULONG64 lpte
)
{
ULONG64 PteLong=0;
ULONG64 ProtoAddress=0;
if (TargetMachine != IMAGE_FILE_MACHINE_I386) {
GetFieldValue(lpte, "nt!_MMPTE", "u.Proto.ProtoAddress",ProtoAddress);
return ProtoAddress;
}
if (PaeEnabled) {
GetFieldValue(lpte, "nt!_MMPTE", "u.Proto.ProtoAddress",ProtoAddress);
return ProtoAddress;
}
GetFieldValue(lpte, "nt!_MMPTE", "u.Long", PteLong);
ProtoAddress = (((ULONG)PteLong >> 11) << 9) + (((ULONG)PteLong << 24) >> 23) + 0xE1000000;
return ProtoAddress;
}
ULONG64
DbgGetSubsectionAddress(
IN ULONG64 Pte
)
{
ULONG64 PteLong=0;
ULONG64 MmSubsectionBase;
ULONG64 SubsectionAddress=0;
if (PaeEnabled &&
(TargetMachine == IMAGE_FILE_MACHINE_I386)) {
ULONG64 SubsectionAddress=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Subsect.SubsectionAddress", SubsectionAddress);
return SubsectionAddress;
}
MmSubsectionBase = GetNtDebuggerDataPtrValue(MmSubsectionBase);
GetFieldValue(Pte, "nt!_MMPTE", "u.Long", PteLong);
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
if (!MmNonPagedPoolEnd) {
MmNonPagedPoolEnd = GetNtDebuggerDataValue(MmNonPagedPoolEnd);
}
SubsectionAddress =
((PteLong & 0x80000000) ?
(((ULONG) MmSubsectionBase + (((PteLong & 0x7ffff800) >> 4) |
((PteLong<<2) & 0x78))))
:
(((ULONG) MmNonPagedPoolEnd - ((((PteLong)>>11)<<7) |
((PteLong<<2) & 0x78)))));
SubsectionAddress = (ULONG64) (LONG64) (LONG) SubsectionAddress;
break;
}
case IMAGE_FILE_MACHINE_AMD64: {
LONG64 SignedSubsectionAddress;
GetFieldValue(Pte, "nt!_MMPTE", "u.Subsect.SubsectionAddress", SignedSubsectionAddress);
SubsectionAddress = (ULONG64) SignedSubsectionAddress;
break;
}
case IMAGE_FILE_MACHINE_IA64: {
ULONG64 WhichPool=0, SubsectionAddress2=0;
GetFieldValue(Pte, "nt!_MMPTE", "u.Subsect.SubsectionAddress", SubsectionAddress2);
GetFieldValue(Pte, "nt!_MMPTE", "u.Subsect.WhichPool", WhichPool);
if (!MmNonPagedPoolEnd) {
MmNonPagedPoolEnd = GetNtDebuggerDataValue(MmNonPagedPoolEnd);
}
SubsectionAddress =
((WhichPool == 1) ?
((MmSubsectionBase + (SubsectionAddress2)))
:
((MmNonPagedPoolEnd -
(SubsectionAddress2))));
break;
}
default:
return FALSE;
} /* switch */
return SubsectionAddress;
}
ULONG64
DbgGetPdeAddress(
IN ULONG64 VirtualAddress
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
if (PaeEnabled) {
return PaeGetPdeAddressX86 (VirtualAddress);
}
return MiGetPdeAddressX86(VirtualAddress);
case IMAGE_FILE_MACHINE_AMD64:
return MiGetPdeAddressAMD64(VirtualAddress);
case IMAGE_FILE_MACHINE_IA64:
return MiGetPdeAddressIA64(VirtualAddress);
default:
break;
}
return 0;
}
ULONG64
DbgGetPpeAddress(
IN ULONG64 VirtualAddress
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_AMD64:
return MiGetPpeAddressAMD64(VirtualAddress);
case IMAGE_FILE_MACHINE_IA64:
return MiGetPpeAddressIA64(VirtualAddress);
default:
break;
}
return 0;
}
ULONG64
DbgGetPxeAddress(
IN ULONG64 VirtualAddress
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_AMD64:
return MiGetPxeAddressAMD64(VirtualAddress);
default:
break;
}
return 0;
}
ULONG64
DbgGetVirtualAddressMappedByPte(
IN ULONG64 Pte
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
if (PaeEnabled) {
return PaeGetVirtualAddressMappedByPteX86(Pte);
}
return MiGetVirtualAddressMappedByPteX86 (Pte);
case IMAGE_FILE_MACHINE_AMD64:
return MiGetVirtualAddressMappedByPteAMD64 (Pte);
case IMAGE_FILE_MACHINE_IA64:
return MiGetVirtualAddressMappedByPteIA64 (Pte);
default:
break;
}
return 0;
}
ULONG64
DbgGetPteAddress(
IN ULONG64 VirtualAddress
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
if (PaeEnabled) {
return PaeGetPteAddressX86 (VirtualAddress);
}
return MiGetPteAddressX86(VirtualAddress);
}
case IMAGE_FILE_MACHINE_AMD64: {
return MiGetPteAddressAMD64(VirtualAddress);
}
case IMAGE_FILE_MACHINE_IA64: {
return MiGetPteAddressIA64(VirtualAddress);
}
default:
return FALSE;
} /* switch */
return FALSE;
}
BOOL
Mi_Is_Physical_Address (
ULONG64 VirtualAddress
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_IA64: {
return MI_IS_PHYSICAL_ADDRESS_IA64(VirtualAddress);
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
DBG_GET_PAGE_SHIFT (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return PAGE_SHIFT_X86;
}
case IMAGE_FILE_MACHINE_AMD64: {
return PAGE_SHIFT_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return PAGE_SHIFT_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG64
DBG_GET_MM_SESSION_SPACE_DEFAULT (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return MM_SESSION_SPACE_DEFAULT_X86;
}
case IMAGE_FILE_MACHINE_AMD64: {
return MM_SESSION_SPACE_DEFAULT_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return MM_SESSION_SPACE_DEFAULT_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
GET_MM_PTE_VALID_MASK (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return MM_PTE_VALID_MASK_X86;
}
case IMAGE_FILE_MACHINE_AMD64: {
return MM_PTE_VALID_MASK_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return MM_PTE_VALID_MASK_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
GET_MM_PTE_LARGE_PAGE_MASK (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return MM_PTE_LARGE_PAGE_MASK_X86;
}
case IMAGE_FILE_MACHINE_AMD64:{
return MM_PTE_LARGE_PAGE_MASK_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return MM_PTE_LARGE_PAGE_MASK_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
GET_MM_PTE_TRANSITION_MASK (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return MM_PTE_TRANSITION_MASK_X86;
}
case IMAGE_FILE_MACHINE_AMD64:{
return MM_PTE_TRANSITION_MASK_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return MM_PTE_TRANSITION_MASK_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
GET_MM_PTE_PROTOTYPE_MASK (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return MM_PTE_PROTOTYPE_MASK_X86;
}
case IMAGE_FILE_MACHINE_AMD64:{
return MM_PTE_PROTOTYPE_MASK_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return MM_PTE_PROTOTYPE_MASK_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
GET_MM_PTE_PROTECTION_MASK (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return MM_PTE_PROTECTION_MASK_X86;
}
case IMAGE_FILE_MACHINE_AMD64:{
return MM_PTE_PROTECTION_MASK_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return MM_PTE_PROTECTION_MASK_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
GET_MM_PTE_PAGEFILE_MASK (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return MM_PTE_PAGEFILE_MASK_X86;
}
case IMAGE_FILE_MACHINE_AMD64:{
return MM_PTE_PAGEFILE_MASK_AMD64;
}
case IMAGE_FILE_MACHINE_IA64: {
return MM_PTE_PAGEFILE_MASK_IA64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG64
GET_PTE_TOP (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return PTE_TOP_X86;
}
case IMAGE_FILE_MACHINE_IA64: {
return PDE_TOP_IA64;
}
case IMAGE_FILE_MACHINE_AMD64: {
return PTE_TOP_AMD64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG64
GET_PDE_TOP (
VOID
)
{
return GET_PTE_TOP();
}
ULONG64
GET_PTE_BASE (
VOID
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:{
return PTE_BASE_X86;
}
case IMAGE_FILE_MACHINE_IA64: {
return PTE_BASE_IA64;
}
case IMAGE_FILE_MACHINE_AMD64: {
return PTE_BASE_AMD64;
}
default:
return FALSE;
} /* switch */
return FALSE;
}
ULONG
GetAddressState(
IN ULONG64 VirtualAddress
)
{
ULONG64 Address;
ULONG result;
ULONG64 Pte;
ULONG64 Pde;
ULONG PdeContents;
ULONG PteContents;
if (Mi_Is_Physical_Address (VirtualAddress)) {
return ADDRESS_VALID;
}
Address = VirtualAddress;
Pde = DbgGetPdeAddress (VirtualAddress);
Pte = DbgGetPteAddress (VirtualAddress);
if ( !ReadMemory( Pde,
&PdeContents,
sizeof(ULONG),
&result) ) {
dprintf("%08p: Unable to get PDE\n",Pde);
return ADDRESS_NOT_VALID;
}
if (PdeContents & GET_MM_PTE_VALID_MASK()) {
if (PdeContents & GET_MM_PTE_LARGE_PAGE_MASK()) {
return ADDRESS_VALID;
}
if ( !ReadMemory( Pte,
&PteContents,
sizeof(ULONG),
&result) ) {
dprintf("%08p: Unable to get PTE\n",Pte);
return ADDRESS_NOT_VALID;
}
if (PteContents & GET_MM_PTE_VALID_MASK()) {
return ADDRESS_VALID;
}
if (PteContents & GET_MM_PTE_TRANSITION_MASK()) {
if (!(PteContents & GET_MM_PTE_PROTOTYPE_MASK())) {
return ADDRESS_TRANSITION;
}
}
}
return ADDRESS_NOT_VALID;
}
VOID
DbgDisplayInvalidPte (
ULONG64 CurrentPte,
ULONG64 flags,
PCHAR Indent
)
{
ULONG Transition = 0;
ULONG Protection = 0;
ULONG PrototypeBit = 0;
ULONG64 CurrentPteContents;
ULONG PteSize;
PteSize = GetTypeSize ("nt!_MMPTE");
GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Long", CurrentPteContents);
GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Soft.Prototype", PrototypeBit);
dprintf("not valid\n", Indent);
GetFieldValue (CurrentPte, "nt!_MMPTE", "u.Soft.Protection", Protection);
GetFieldValue (CurrentPte, "nt!_MMPTE", "u.Soft.Transition", Transition);
if (PrototypeBit) {
if (DbgGetPageFileHigh (CurrentPte) == DbgPteLookupNeeded ()) {
dprintf("%s Proto: VAD\n", Indent);
dprintf("%s Protect: ", Indent);
DbgPrintProtection (Protection);
}
else if (flags) {
if (PteSize == 4) {
dprintf("%s Subsection: %08I64X\n",
Indent,
DbgGetSubsectionAddress (CurrentPte));
}
else {
dprintf("%s Subsection: %016I64X\n",
Indent,
DbgGetSubsectionAddress (CurrentPte));
}
dprintf("%s Protect: ", Indent);
DbgPrintProtection (Protection);
}
else {
if (PteSize == 4) {
dprintf("%s Proto: %08I64X\n",
Indent,
DbgPteToProto (CurrentPte));
}
else {
dprintf("%s Proto: %016I64X\n",
Indent,
DbgPteToProto (CurrentPte));
}
}
} else if (Transition) {
dprintf("%s Transition: %x\n",
Indent,
(ULONG) DbgGetFrameNumber (CurrentPte));
dprintf("%s Protect: ", Indent);
DbgPrintProtection (Protection);
} else if (CurrentPteContents != 0) {
if (DbgPteIsDemandZero (CurrentPte)) {
dprintf("%s DemandZero\n", Indent);
}
else {
dprintf("%s PageFile: %2lx\n",
Indent,
DbgGetPageFileLow (CurrentPte));
dprintf("%s Offset: %lx\n", Indent, DbgGetPageFileHigh (CurrentPte));
}
dprintf("%s Protect: ", Indent);
DbgPrintProtection (Protection);
}
dprintf ("\n");
}
VOID
DbgDisplayValidPte (
ULONG64 Pte
)
{
ULONG64 Pte_Long;
if (Pte == 0) {
return;
}
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
case IMAGE_FILE_MACHINE_AMD64:
GetFieldValue(Pte, "nt!_MMPTE", "u.Long", Pte_Long);
dprintf("pfn %x %c%c%c%c%c%c%c%c%cV",
(ULONG) DbgGetFrameNumber(Pte),
DbgGetCopyOnWrite(Pte) ? 'C' : '-',
Pte_Long & 0x100 ? 'G' : '-',
Pte_Long & 0x80 ? 'L' : '-',
DbgGetDirty(Pte) ? 'D' : '-',
DbgGetAccessed(Pte) ? 'A' : '-',
Pte_Long & 0x10 ? 'N' : '-',
Pte_Long & 0x8 ? 'T' : '-',
DbgGetOwner(Pte) ? 'U' : 'K',
Pte_Long & 0x2 ? 'W' : 'R');
break;
case IMAGE_FILE_MACHINE_IA64:
dprintf("pfn %x %c%c%c%c%c%cV",
(ULONG) DbgGetFrameNumber(Pte),
DbgGetExecute(Pte) ? 'E' : '-',
DbgGetCopyOnWrite(Pte) ? 'C' : '-',
DbgGetDirty(Pte) ? 'D' : '-',
DbgGetAccessed(Pte) ? 'A' : '-',
DbgGetOwner(Pte) ? 'U' : 'K',
DbgGetWrite(Pte) ? 'W' : 'R');
break;
default:
break;
}
}
LOGICAL
DbgAddressSelfMapped (
ULONG64 Address
)
{
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
if ((Address >= GET_PTE_BASE()) && (Address < GET_PTE_TOP())) {
return TRUE;
}
break;
case IMAGE_FILE_MACHINE_IA64:
if (((Address & PTE_BASE_IA64) == PTE_BASE_IA64) &&
((Address & ~(VRN_MASK_IA64|PTE_BASE_IA64)) < ((ULONG64)1 << PDI1_SHIFT_IA64))) {
return TRUE;
}
else if (((Address & PDE_BASE_IA64) == PDE_BASE_IA64) &&
((Address & ~(VRN_MASK_IA64|PDE_BASE_IA64)) < ((ULONG64)1 << PDI_SHIFT_IA64))) {
return TRUE;
}
else if (((Address & PDE_TBASE_IA64) == PDE_TBASE_IA64) &&
((Address & ~(VRN_MASK_IA64|PDE_TBASE_IA64)) < PageSize)) {
return TRUE;
}
break;
case IMAGE_FILE_MACHINE_AMD64:
if ((Address >= PTE_BASE_AMD64) && (Address <= PTE_TOP_AMD64)) {
return TRUE;
}
break;
default:
break;
}
return FALSE;
}
VOID
DumpPte (
ULONG64 Address,
ULONG64 flags
)
{
PCHAR Indent;
ULONG Levels;
ULONG64 Pte;
ULONG64 Pde;
ULONG64 Ppe;
ULONG64 Pxe;
ULONG64 CurrentPte;
ULONG64 CurrentPteContents;
ULONG ValidBit;
ULONG64 Pde_Long=0;
ULONG64 Pte_Long=0;
ULONG64 Ppe_Long=0;
ULONG64 Pxe_Long=0;
ULONG PteSize;
PteSize = GetTypeSize ("nt!_MMPTE");
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
Levels = 2;
break;
case IMAGE_FILE_MACHINE_IA64:
Levels = 3;
break;
case IMAGE_FILE_MACHINE_AMD64:
Levels = 4;
break;
default:
dprintf("Not implemented for this platform\n");
return;
break;
}
if (DbgAddressSelfMapped (Address)) {
if (!flags) {
//
// The address is the address of a PTE, rather than
// a virtual address. Don't get the corresponding
// PTE contents, use this address as the PTE.
//
Address = DbgGetVirtualAddressMappedByPte (Address);
}
}
if (!flags) {
Pxe = DbgGetPxeAddress (Address);
Ppe = DbgGetPpeAddress (Address);
Pde = DbgGetPdeAddress (Address);
Pte = DbgGetPteAddress (Address);
} else {
Pxe = Address;
Ppe = Address;
Pde = Address;
Pte = Address;
}
if (Levels >= 3) {
dprintf(" VA %016p\n", Address);
}
else {
dprintf(" VA %08p\n", Address);
}
if (Levels == 4) {
dprintf("PXE @ %016P PPE at %016P PDE at %016P PTE at %016P\n",
Pxe, Ppe, Pde, Pte);
}
else if (Levels == 3) {
dprintf("PPE at %016P PDE at %016P PTE at %016P\n",
Ppe, Pde, Pte);
}
else {
if (PteSize == 4) {
dprintf("PDE at %08P PTE at %08P\n", Pde, Pte);
}
else {
dprintf("PDE at %016P PTE at %016P\n", Pde, Pte);
}
}
//
// Decode the PXE.
//
if (Levels >= 4) {
CurrentPte = Pxe;
if (GetFieldValue (CurrentPte, "nt!_MMPTE", "u.Hard.Valid", ValidBit)) {
dprintf("Unable to get PXE %I64X\n", CurrentPte);
return;
}
GetFieldValue (CurrentPte, "nt!_MMPTE", "u.Long", CurrentPteContents);
Pxe_Long = CurrentPteContents;
if (ValidBit == 0) {
dprintf("contains %016I64X unavailable\n", Pxe_Long);
Indent = "";
if (CurrentPteContents != 0) {
DbgDisplayInvalidPte (CurrentPte, flags, Indent);
}
else {
dprintf ("\n");
}
return;
}
}
//
// Decode the PPE.
//
if (Levels >= 3) {
CurrentPte = Ppe;
if (GetFieldValue (CurrentPte, "nt!_MMPTE", "u.Hard.Valid", ValidBit)) {
dprintf("Unable to get PPE %I64X\n", CurrentPte);
return;
}
GetFieldValue (CurrentPte, "nt!_MMPTE", "u.Long", CurrentPteContents);
Ppe_Long = CurrentPteContents;
if (ValidBit == 0) {
if (Levels >= 4) {
dprintf("contains %016I64X contains %016I64X\n",
Pxe_Long, Ppe_Long);
Indent = " ";
DbgDisplayValidPte (Pxe);
}
else {
dprintf("contains %016I64X\n",
Ppe_Long);
Indent = "";
}
if (CurrentPteContents != 0) {
DbgDisplayInvalidPte (CurrentPte, flags, Indent);
}
else {
dprintf ("\n");
}
return;
}
}
//
// Decode the PDE.
//
CurrentPte = Pde;
if ( GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Hard.Valid", ValidBit) ) {
dprintf("Unable to get PDE %I64X\n", CurrentPte);
return;
}
GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Long", CurrentPteContents);
Pde_Long = CurrentPteContents;
if (ValidBit == 0) {
if (Levels >= 4) {
dprintf("contains %016I64X contains %016I64X contains %016I64X\n",
Pxe_Long, Ppe_Long, Pde_Long);
DbgDisplayValidPte (Pxe);
dprintf (" ");
DbgDisplayValidPte (Ppe);
Indent = " ";
}
else if (Levels == 3) {
dprintf("contains %016I64X contains %016I64X\n",
Ppe_Long, Pde_Long);
DbgDisplayValidPte (Ppe);
Indent = " ";
}
else {
if (PteSize == 4) {
dprintf("contains %08I64X\n", Pde_Long);
}
else {
dprintf("contains %016I64X\n", Pde_Long);
}
Indent = "";
}
if (CurrentPteContents != 0) {
DbgDisplayInvalidPte (CurrentPte, flags, Indent);
}
else {
dprintf ("\n");
}
return;
}
//
// Decode the PTE and print everything out.
//
CurrentPte = Pte;
if ( GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Hard.Valid", ValidBit) ) {
dprintf("Unable to get PTE %I64X\n", CurrentPte);
return;
}
GetFieldValue(CurrentPte, "nt!_MMPTE", "u.Long", CurrentPteContents);
if (Pde_Long & GET_MM_PTE_LARGE_PAGE_MASK()) {
CurrentPteContents = 0;
}
Pte_Long = CurrentPteContents;
//
// Print the raw values.
//
if (Levels == 4) {
dprintf("contains %016I64X contains %016I64X contains %016I64X contains %016I64X\n",
Pxe_Long, Ppe_Long, Pde_Long, Pte_Long);
Indent = " ";
DbgDisplayValidPte (Pxe);
dprintf (" ");
DbgDisplayValidPte (Ppe);
dprintf (" ");
DbgDisplayValidPte (Pde);
dprintf (" ");
}
else if (Levels == 3) {
dprintf("contains %016I64X contains %016I64X contains %016I64X\n",
Ppe_Long, Pde_Long, Pte_Long);
Indent = " ";
DbgDisplayValidPte (Ppe);
dprintf (" ");
DbgDisplayValidPte (Pde);
dprintf (" ");
}
else {
if (PteSize == 4) {
dprintf("contains %08I64X contains %08I64X\n", Pde_Long, Pte_Long);
Indent = " ";
}
else {
dprintf("contains %016I64X contains %016I64X\n", Pde_Long, Pte_Long);
Indent = " ";
}
DbgDisplayValidPte (Pde);
dprintf (" ");
}
if (Pde_Long & GET_MM_PTE_LARGE_PAGE_MASK()) {
dprintf ("LARGE PAGE\n");
}
else if (ValidBit != 0) {
DbgDisplayValidPte (Pte);
dprintf ("\n");
}
else {
if (CurrentPteContents != 0) {
DbgDisplayInvalidPte (CurrentPte, flags, Indent);
}
else {
dprintf ("\n");
}
}
dprintf ("\n");
return;
}
DECLARE_API( pte )
/*++
Routine Description:
Displays the corresponding PDE and PTE.
Arguments:
args -
Return Value:
None
--*/
{
ULONG64 Address = 0;
ULONG64 flags = 0;
ULONG flags2 = 0;
INIT_API();
if (GetExpressionEx(args,&Address, &args)) {
if (GetExpressionEx(args,&flags, &args)) {
flags2 = (ULONG) GetExpression(args);
}
}
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
Address = (ULONG64) (LONG64) (LONG) Address;
DumpPte (Address, flags);
break;
case IMAGE_FILE_MACHINE_IA64:
DumpPte (Address, flags);
break;
case IMAGE_FILE_MACHINE_AMD64:
DumpPte (Address, flags);
break;
default:
dprintf("Unknown platform %d\n",TargetMachine);
break;
}
EXIT_API();
return S_OK;
}
BOOLEAN
GetPhysicalAddress (
IN ULONG64 Address,
OUT PULONG64 PhysAddress
)
/*++
Routine Description:
Retrieves the physical address corresponding to the supplied virtual
address.
Arguments:
Va - Supplies the virtual address for which the PTE address is sought.
PhysAddress - Supplies a pointer to caller-supplied memory which is to
contain the physical address.
Return Value:
TRUE - The supplied Va is valid and it's physical address was placed
in *PhysAddress.
FALSE - The supplied Va does not correspond to a valid address.
--*/
{
ULONG ValidBit;
ULONG LargePageBit;
ULONG PageFrameIndex;
ULONG64 PteAddress, PteContents;
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
case IMAGE_FILE_MACHINE_AMD64:
PteAddress = DbgGetPdeAddress (Address);
if (GetFieldValue (PteAddress, "nt!_MMPTE", "u.Hard.Valid", ValidBit) ) {
dprintf("Unable to get PDE %I64X\n", PteAddress);
return FALSE;
}
if (ValidBit == 0) {
return FALSE;
}
if (GetFieldValue (PteAddress, "nt!_MMPTE", "u.Hard.LargePage", LargePageBit) ) {
dprintf("Unable to get PDE %I64X\n", PteAddress);
return FALSE;
}
if (LargePageBit == 0) {
break;
}
PageFrameIndex = (ULONG) DbgGetFrameNumber(PteAddress);
switch (TargetMachine) {
case IMAGE_FILE_MACHINE_I386:
PageFrameIndex += MiGetPteOffsetX86 (Address);
break;
case IMAGE_FILE_MACHINE_AMD64:
PageFrameIndex += (ULONG) MiGetPteOffsetAMD64 (Address);
break;
}
*PhysAddress =
((PageFrameIndex << DBG_GET_PAGE_SHIFT ()) | (Address & 0xFFF));
return TRUE;
default:
break;
}
PteAddress = DbgGetPteAddress (Address);
if (GetFieldValue (PteAddress, "nt!_MMPTE", "u.Hard.Valid", ValidBit) ) {
dprintf("Unable to get PTE %I64X\n", PteAddress);
return FALSE;
}
if (ValidBit == 0) {
return FALSE;
}
GetFieldValue (PteAddress, "nt!_MMPTE", "u.Long", PteContents);
*PhysAddress =
((DbgGetFrameNumber(PteAddress) << DBG_GET_PAGE_SHIFT ()) | (Address & 0xFFF));
return TRUE;
}
typedef struct _BPENTRY {
ULONG64 VirtualAddress;
ULONG64 PhysicalAddress;
ULONG Flags;
ULONG Contents;
} BPENTRY, *PBPENTRY;
#define PHYSICAL_BP_TABLE_SIZE 16
#define PBP_BYTE_POSITION 0x03
#define PBP_INUSE 0x04
#define PBP_ENABLED 0x08
BPENTRY PhysicalBreakpointTable[PHYSICAL_BP_TABLE_SIZE];
#define MAX_FORMAT_STRINGS 8
LPSTR
FormatAddr64(
ULONG64 addr
)
{
static CHAR strings[MAX_FORMAT_STRINGS][18];
static int next = 0;
LPSTR string;
string = strings[next];
++next;
if (next >= MAX_FORMAT_STRINGS) {
next = 0;
}
if (addr >> 32) {
sprintf(string, "%08x`%08x", (ULONG)(addr>>32), (ULONG)addr);
} else {
sprintf(string, "%08x", (ULONG)addr);
}
return string;
}
DECLARE_API( ubl )
{
int i;
INIT_API();
UNREFERENCED_PARAMETER (args);
for (i = 0; i < PHYSICAL_BP_TABLE_SIZE; i++) {
if (PhysicalBreakpointTable[i].Flags & PBP_INUSE) {
dprintf("%2d: %c %s (%s) %d %02x",
i,
(PhysicalBreakpointTable[i].Flags & PBP_ENABLED) ? 'e' : 'd',
FormatAddr64(PhysicalBreakpointTable[i].VirtualAddress),
FormatAddr64(PhysicalBreakpointTable[i].PhysicalAddress),
(PhysicalBreakpointTable[i].Flags & PBP_BYTE_POSITION),
PhysicalBreakpointTable[i].Contents
);
}
}
EXIT_API();
return S_OK;
}
void
PbpEnable(
int n
)
{
PBPENTRY Pbp = PhysicalBreakpointTable + n;
ULONG mask;
ULONG Data;
ULONG cb=0;
mask = 0xff << (8 * (Pbp->Flags & PBP_BYTE_POSITION));
Data = (Pbp->Contents & ~mask) | (0xcccccccc & mask);
WritePhysical(Pbp->PhysicalAddress, &Data, 4, &cb);
if (cb == 4) {
Pbp->Flags |= PBP_ENABLED;
}
}
void
PbpDisable(
int n
)
{
PBPENTRY Pbp = PhysicalBreakpointTable + n;
ULONG cb;
WritePhysical(Pbp->PhysicalAddress, &Pbp->Contents, 4, &cb);
if (cb == 4) {
Pbp->Flags &= ~PBP_ENABLED;
}
}
void
PbpClear(
int n
)
{
PBPENTRY Pbp = PhysicalBreakpointTable + n;
ULONG cb;
WritePhysical(Pbp->PhysicalAddress, &Pbp->Contents, 4, &cb);
if (cb == 4) {
Pbp->Flags = 0;
}
}
DECLARE_API( ubc )
{
int i;
int n;
INIT_API();
if (*args == '*') {
//
// clear them all
//
for (i = 0; i < PHYSICAL_BP_TABLE_SIZE; i++) {
if (PhysicalBreakpointTable[i].Flags & PBP_INUSE) {
PbpClear(i);
}
}
EXIT_API();
return E_INVALIDARG;
}
n = sscanf(args,"%d",&i);
if (n != 1 || i < 0 || i >= PHYSICAL_BP_TABLE_SIZE) {
dprintf("!ubc: bad breakpoint number\n");
EXIT_API();
return E_INVALIDARG;
}
if ( !(PhysicalBreakpointTable[i].Flags & PBP_INUSE)) {
dprintf("!ubc: breakpoint number %d not set\n", i);
EXIT_API();
return E_INVALIDARG;
}
PbpClear(i);
EXIT_API();
return S_OK;
}
DECLARE_API( ube )
{
int i;
int n;
INIT_API();
if (*args == '*') {
//
// enable them all
//
for (i = 0; i < PHYSICAL_BP_TABLE_SIZE; i++) {
if (PhysicalBreakpointTable[i].Flags & PBP_INUSE) {
PbpEnable(i);
}
}
EXIT_API();
return E_INVALIDARG;
}
n = sscanf(args,"%d",&i);
if (n != 1 || i < 0 || i >= PHYSICAL_BP_TABLE_SIZE) {
dprintf("!ube: bad breakpoint number\n");
EXIT_API();
return E_INVALIDARG;
}
if ( !(PhysicalBreakpointTable[i].Flags & PBP_INUSE)) {
dprintf("!ube: breakpoint number %d not set\n", i);
EXIT_API();
return E_INVALIDARG;
}
PbpEnable(i);
EXIT_API();
return S_OK;
}
DECLARE_API( ubd )
{
int i;
int n;
INIT_API();
if (*args == '*') {
//
// disable them all
//
for (i = 0; i < PHYSICAL_BP_TABLE_SIZE; i++) {
if (PhysicalBreakpointTable[i].Flags & PBP_INUSE) {
PbpDisable(i);
}
}
EXIT_API();
return E_INVALIDARG;
}
n = sscanf(args,"%d",&i);
if (n != 1 || i < 0 || i >= PHYSICAL_BP_TABLE_SIZE) {
dprintf("!ubd: bad breakpoint number\n");
EXIT_API();
return E_INVALIDARG;
}
if ( !(PhysicalBreakpointTable[i].Flags & PBP_INUSE)) {
dprintf("!ubd: breakpoint number %d not set\n", i);
EXIT_API();
return E_INVALIDARG;
}
PbpDisable(i);
EXIT_API();
return S_OK;
}
DECLARE_API( ubp )
{
ULONG64 Address;
ULONG result;
ULONG PageShift;
PMMPTEx Pte;
PMMPTEx Pde;
ULONG64 PdeContents;
ULONG64 PteContents;
PBPENTRY Pbp = NULL;
ULONG cb;
int i;
ULONG64 PhysicalAddress;
static BOOL DoWarning = TRUE;
INIT_API();
if (DoWarning) {
DoWarning = FALSE;
dprintf("This command is VERY DANGEROUS, and may crash your system!\n");
dprintf("If you don't know what you are doing, enter \"!ubc *\" now!\n\n");
}
for (i = 0; i < PHYSICAL_BP_TABLE_SIZE; i++) {
if (!(PhysicalBreakpointTable[i].Flags & PBP_INUSE)) {
Pbp = PhysicalBreakpointTable + i;
break;
}
}
if (!Pbp) {
dprintf("!ubp: breakpoint table is full!\n");
EXIT_API();
return E_INVALIDARG;
}
Address = GetExpression(args);
if ((Address >= GET_PTE_BASE()) && (Address < GET_PDE_TOP())) {
//
// The address is the address of a PTE, rather than
// a virtual address.
//
dprintf("!ubp: cannot set a breakpoint on a PTE\n");
EXIT_API();
return E_INVALIDARG;
}
Pde = DbgGetPdeAddress (Address);
Pte = DbgGetPteAddress (Address);
if ( !ReadMemory( (DWORD)Pde,
&PdeContents,
sizeof(ULONG),
&result) ) {
dprintf("!ubp: %08lx: Unable to get PDE\n",Pde);
EXIT_API();
return E_INVALIDARG;
}
if (!(PdeContents & 0x1)) {
dprintf("!ubp: no valid PTE\n");
EXIT_API();
return E_INVALIDARG;
}
if (PdeContents & GET_MM_PTE_LARGE_PAGE_MASK()) {
dprintf("!ubp: not supported for large page\n");
EXIT_API();
return E_INVALIDARG;
}
if ( GetFieldValue( Pte, "nt!_MMPTE", "u.Long", PteContents) ) {
dprintf("!ubp: %08p: Unable to get PTE (PDE = %08p)\n",Pte, Pde);
EXIT_API();
return E_INVALIDARG;
}
if (!(PteContents & 1)) {
dprintf("!ubp: no valid PTE\n");
EXIT_API();
return E_INVALIDARG;
}
PageShift = DBG_GET_PAGE_SHIFT ();
PhysicalAddress = ((DbgGetFrameNumber (PteContents)) << PageShift);
PhysicalAddress &= ~((1 << PageShift) - 1);
PhysicalAddress |= (Address & ~((1 << PageShift) - 1));
PhysicalAddress &= ~3;
for (i = 0; i < PHYSICAL_BP_TABLE_SIZE; i++) {
if (PhysicalBreakpointTable[i].PhysicalAddress == PhysicalAddress) {
dprintf("!ubp: cannot set two breakpoints in the same word\n");
EXIT_API();
return E_INVALIDARG;
}
}
ReadPhysical(PhysicalAddress, &Pbp->Contents, 4, &cb);
if (cb != 4) {
dprintf("!ubp: unable to read physical at 0x%08x\n", PhysicalAddress);
EXIT_API();
return E_INVALIDARG;
}
Pbp->VirtualAddress = Address;
Pbp->PhysicalAddress = PhysicalAddress;
Pbp->Flags = PBP_INUSE | ((ULONG) Address & 3);
PbpEnable((int)(Pbp - PhysicalBreakpointTable));
EXIT_API();
return S_OK;
}
DECLARE_API( halpte )
{
#define HAL_VA_START_X86 0xffffffffffd00000
ULONG64 virtAddr = HAL_VA_START_X86;
ULONG64 pteAddr;
ULONG64 pteContents;
ULONG count = 0;
INIT_API();
UNREFERENCED_PARAMETER (args);
if (TargetMachine != IMAGE_FILE_MACHINE_I386) {
dprintf("X86 only API\n");
EXIT_API();
return E_UNEXPECTED;
}
dprintf("\n\nDumping HAL PTE ranges\n\n");
while (virtAddr < 0xffffffffffffe000) {
pteAddr = DbgGetPteAddress(virtAddr);
if (!InitTypeRead(pteAddr, nt!_MMPTE)) {
if (pteContents = ReadField(u.Long)) {
dprintf("[%03x] %p -> %I64x\n",
count++,
virtAddr,
pteContents & (ULONG64) ~0xFFF);
}
}
virtAddr += PageSize;
}
EXIT_API();
return S_OK;
}
#if defined(ALT_4K)
#undef MiGetAltPteAddress
#define MiGetAltPteAddress(VA) \
((ULONG64) (ALT4KB_PERMISSION_TABLE_START + \
((((ULONG64) (VA)) >> PAGE_4K_SHIFT) << ALT_PTE_SHIFT)))
#endif // defined(ALT_4K)
//
// Limit the IA32 subsystem to a 2GB virtual address space.
// This means "Large Address Aware" apps are not supported in emulation mode.
//
#define _MAX_WOW64_ADDRESS (0x00000000080000000UI64)
DECLARE_API( ate )
/*++
Routine Description:
Displays the correnponding ATE.
Arguments:
Args - Address Flags
Return Value:
None
--*/
{
#if defined(ALT_4K)
ULONG64 Address;
ULONG flags;
ULONG Result;
ULONG64 PointerAte;
ULONG64 Process;
ULONG AltTable[(_MAX_WOW64_ADDRESS >> PTI_SHIFT)/32];
ULONG64 *Wow64Process;
if (GetExpressionEx(args,&Address, &args)) {
flags = (ULONG) GetExpression(args);
}
Address = Address & ~((ULONG64)PageSize - 1);
PointerAte = MiGetAltPteAddress(Address);
if ( InitTypeRead( PointerAte,
nt!_MMPTE) ) {
dprintf("Unable to get ATE %p\n", PointerAte);
return E_INVALIDARG;
}
dprintf("%016I64X: %016I64X ", PointerAte, ReadField(u.Long));
dprintf("PTE off: %08I64X protect: ",
ReadField(u.Alt.PteOffset));
DbgPrintProtection((ULONG) ReadField(u.Alt.Protection));
dprintf(" %c%c%c%c%c%c%c%c%c%c\n",
ReadField(u.Alt.Commit) ? 'V' : '-',
ReadField(u.Alt.Accessed) ? '-' : 'G',
ReadField(u.Alt.Execute) ? 'E' : '-',
ReadField(u.Alt.Write) ? 'W' : 'R',
ReadField(u.Alt.Lock) ? 'L' : '-',
ReadField(u.Alt.FillZero) ? 'Z' : '-',
ReadField(u.Alt.NoAccess) ? 'N' : '-',
ReadField(u.Alt.CopyOnWrite) ? 'C' : '-',
ReadField(u.Alt.PteIndirect) ? 'I' : '-',
ReadField(u.Alt.Private) ? 'P' : '-');
#else
UNREFERENCED_PARAMETER (args);
UNREFERENCED_PARAMETER (Client);
#endif // defined(ALT_4K)
return S_OK;
}
DECLARE_API( pte2va )
/*++
Routine Description:
Displays the correnponding ATE.
Arguments:
Args - Address Flags
Return Value:
None
--*/
{
ULONG64 Address=0;
ULONG flags=0;
UNREFERENCED_PARAMETER (Client);
if (GetExpressionEx(args,&Address, &args)) {
flags = (ULONG) GetExpression(args);
}
Address = DbgGetVirtualAddressMappedByPte(Address);
dprintf("%p \n", Address);
return S_OK;
}
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