63 lines
2.0 KiB
C
63 lines
2.0 KiB
C
/*++
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Copyright (c) 1990 Microsoft Corporation
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Module Name:
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kulookup.c
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Abstract:
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The module implements the code necessary to lookup user mode entry points in the system DLL for exception dispatching and APC delivery.
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Author:
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David N. Cutler (davec) 8-Oct-90
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Revision History:
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--*/
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#include "psp.h"
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#pragma alloc_text(INIT, PspLookupKernelUserEntryPoints)
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NTSTATUS PspLookupKernelUserEntryPoints (VOID)
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/*++
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Routine Description:
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The function locates the address of the exception dispatch and user APC delivery routine in the system DLL and stores the respective addresses in the PCR.
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--*/
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{
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NTSTATUS Status;
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PSZ EntryName;
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// Lookup the user mode "trampoline" code for exception dispatching
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EntryName = "KiUserExceptionDispatcher";
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Status = PspLookupSystemDllEntryPoint(EntryName, (PVOID *)&KeUserExceptionDispatcher);
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if (NT_SUCCESS(Status) == FALSE) {
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KdPrint(("Ps: Cannot find user exception dispatcher address\n"));
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return Status;
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}
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// Lookup the user mode "trampoline" code for APC dispatching
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EntryName = "KiUserApcDispatcher";
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Status = PspLookupSystemDllEntryPoint(EntryName, (PVOID *)&KeUserApcDispatcher);
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if (NT_SUCCESS(Status) == FALSE) {
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KdPrint(("Ps: Cannot find user apc dispatcher address\n"));
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return Status;
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}
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// Lookup the user mode "trampoline" code for callback dispatching.
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EntryName = "KiUserCallbackDispatcher";
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Status = PspLookupSystemDllEntryPoint(EntryName, (PVOID *)&KeUserCallbackDispatcher);
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if (NT_SUCCESS(Status) == FALSE) {
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KdPrint(("Ps: Cannot find user callback dispatcher address\n"));
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return Status;
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}
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// Lookup the user mode "trampoline" code for raising a usermode exception
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EntryName = "KiRaiseUserExceptionDispatcher";
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Status = PspLookupSystemDllEntryPoint(EntryName, (PVOID *)&KeRaiseUserExceptionDispatcher);
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if (NT_SUCCESS(Status) == FALSE) {
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KdPrint(("Ps: Cannot find raise user exception dispatcher address\n"));
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return Status;
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}
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return Status;
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} |