396 lines
6.1 KiB
C
396 lines
6.1 KiB
C
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/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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stubs.c
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Abstract:
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This module implements stub routines for the boot code.
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Author:
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David N. Cutler (davec) 7-Nov-1990
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Environment:
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Kernel mode only.
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Revision History:
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--*/
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#include "ntos.h"
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#include "fwstring.h"
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//
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// Define global data.
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//
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ULONG BlDcacheFillSize = 32;
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KSPIN_LOCK KdpDebuggerLock;
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VOID
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KeBugCheck (
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IN ULONG BugCheckCode
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)
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/*++
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Routine Description:
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This function crashes the system in a controlled manner.
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Arguments:
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BugCheckCode - Supplies the reason for the bug check.
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Return Value:
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None.
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--*/
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{
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//
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// Print out the bug check code and break.
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//
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DbgPrint(ST_BUGCHECK_MSG, BugCheckCode);
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while(TRUE) {
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DbgBreakPoint();
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};
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return;
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}
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LARGE_INTEGER
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KeQueryPerformanceCounter (
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OUT PLARGE_INTEGER Frequency OPTIONAL
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)
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/*++
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Routine Description:
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This routine is a stub for the kernel debugger and always returns a
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value of zero.
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Arguments:
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Frequency - Supplies an optional pointer to a variable which receives
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the performance counter frequency in Hertz.
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Return Value:
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A value of zero is returned.
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--*/
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{
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LARGE_INTEGER Counter;
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//
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// Return the current system time as the function value.
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//
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Counter.LowPart = 0;
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Counter.HighPart = 0;
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return Counter;
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}
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VOID
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KeStallExecutionProcessor (
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IN ULONG MicroSeconds
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)
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/*++
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Routine Description:
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This function stalls execution for the specified number of microseconds.
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Arguments:
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MicroSeconds - Supplies the number of microseconds that execution is to be
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stalled.
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Return Value:
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None.
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--*/
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{
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ULONG Index;
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ULONG Limit;
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PULONG Store;
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ULONG Value;
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//
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// ****** begin temporary code ******
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//
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// This code must be replaced with a smarter version. For now it assumes
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// an execution rate of 40,000,000 instructions per second and 4 instructions
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// per iteration.
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//
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Store = &Value;
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Limit = (MicroSeconds * 40 / 4);
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for (Index = 0; Index < Limit; Index += 1) {
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*Store = Index;
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}
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return;
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}
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BOOLEAN
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KeFreezeExecution (
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IN PKTRAP_FRAME TrapFrame,
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IN PEXCEPTION_RECORD ExceptionRecord
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)
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/*++
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Routine Description:
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This function freezes the execution of all other processors in the host
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configuration and then returns to the caller. It is intended for use by
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the kernel debugger.
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Arguments:
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None.
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Return Value:
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Wether interrupts were previously enabled.
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--*/
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{
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return FALSE;
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}
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VOID
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KeThawExecution (
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IN KIRQL Irql
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)
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/*++
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Routine Description:
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This function unfreezes the execution of all other processors in the host
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configuration and then returns to the caller. It is intended for use by
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the kernel debugger.
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Arguments:
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Irql - Supplies the level that the IRQL is to be lowered to after having
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unfrozen the execution of all other processors.
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Return Value:
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None.
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--*/
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{
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return;
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}
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PVOID
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MmDbgReadCheck (
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IN PVOID VirtualAddress
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)
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/*++
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Routine Description:
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This routine returns the phyiscal address for a virtual address
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which is valid (mapped) for read access.
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Arguments:
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VirtualAddress - Supplies the virtual address to check.
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Return Value:
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Returns NULL if the address is not valid or readable, otherwise
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returns the physical address of the corresponding virtual address.
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--*/
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{
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return VirtualAddress;
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}
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PVOID
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MmDbgTranslatePhysicalAddress (
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IN PHYSICAL_ADDRESS PhysicalAddress
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)
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/*++
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Routine Description:
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This routine returns the phyiscal address for a physical address
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which is valid (mapped).
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Arguments:
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PhysicalAddress - Supplies the physical address to check.
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Return Value:
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Returns NULL if the address is not valid or readable, otherwise
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returns the physical address of the corresponding virtual address.
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--*/
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{
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return (PVOID)PhysicalAddress.LowPart;
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}
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PVOID
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MmDbgWriteCheck (
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IN PVOID VirtualAddress
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)
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/*++
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Routine Description:
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This routine returns the phyiscal address for a virtual address
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which is valid (mapped) for write access.
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Arguments:
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VirtualAddress - Supplies the virtual address to check.
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Return Value:
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Returns NULL if the address is not valid or readable, otherwise
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returns the physical address of the corresponding virtual address.
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--*/
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{
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return VirtualAddress;
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}
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VOID
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RtlAssert(
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IN PVOID FailedAssertion,
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IN PVOID FileName,
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IN ULONG LineNumber,
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IN PCHAR Message OPTIONAL
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)
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{
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DbgPrint( ST_ASSERT_MSG );
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while (TRUE) {
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DbgBreakPoint();
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}
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}
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VOID
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FwpFreeStub(
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IN PVOID Buffer
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)
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{
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}
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VOID
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FwpReservedRoutine(
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VOID
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)
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{
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FwPrint(ST_UNIMPLEMENTED_ROUTINE_MSG);
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return;
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}
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VOID
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RtlInitString(
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OUT PSTRING DestinationString,
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IN PCSZ SourceString OPTIONAL
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)
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/*++
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Routine Description:
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The RtlInitString function initializes an NT counted string.
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The DestinationString is initialized to point to the SourceString
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and the Length and MaximumLength fields of DestinationString are
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initialized to the length of the SourceString, which is zero if
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SourceString is not specified.
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Arguments:
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DestinationString - Pointer to the counted string to initialize
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SourceString - Optional pointer to a null terminated string that
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the counted string is to point to.
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Return Value:
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None.
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--*/
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{
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DestinationString->Length = 0;
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DestinationString->Buffer = (PCHAR)SourceString;
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if (ARGUMENT_PRESENT( SourceString )) {
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while (*SourceString++) {
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DestinationString->Length++;
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}
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DestinationString->MaximumLength = (SHORT)(DestinationString->Length+1);
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}
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else {
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DestinationString->MaximumLength = 0;
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}
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}
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BOOLEAN
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KiTryToAcquireSpinLock (
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IN PKSPIN_LOCK NotUsed
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)
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{
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return TRUE;
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}
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VOID
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KeSweepIcache (
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IN BOOLEAN AllProcessors
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)
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{
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HalSweepIcache();
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HalSweepDcache();
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}
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VOID
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KeFlushIoBuffers (
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IN PMDL Mdl,
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IN BOOLEAN ReadOperation,
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IN BOOLEAN DmaOperation
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)
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{
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HalFlushIoBuffers (Mdl,ReadOperation,DmaOperation);
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}
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