Windows2000/private/ntos/ps/kulookup.c
2020-09-30 17:12:32 +02:00

63 lines
2.0 KiB
C

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