138 lines
2.5 KiB
C
138 lines
2.5 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation
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Module Name:
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wow64apc.c
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Abstract:
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This module implements APC queuing to 32-bit target threads from
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native 64-bit threads.
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Author:
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Samer Arafeh (samera) 9-Oct-2000
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Revision History:
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--*/
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#include <ntos.h>
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#include <nt.h>
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#include <ntrtl.h>
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#include <nturtl.h>
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#include <heap.h>
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#include <apcompat.h>
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#include "ldrp.h"
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#if defined(_WIN64)
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extern PVOID Wow64ApcRoutine;
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#endif
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#if defined(_WIN64)
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VOID
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RtlpWow64Apc(
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IN PVOID Argument1,
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IN PVOID Argument2,
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IN PVOID Argument3
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)
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/*++
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Routine Description:
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This function is called as a result of firing a usermode APC that's targeted to
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a thread running inside Wow64.
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Arguments:
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ApcArgument1 - The 1st argument of the APC. This includes both the 32-bit APC and
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the original 1st argument.
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ApcArgument2 - The second argument of the APC
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ApcArgument3 - The third argument of the APC
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Return Value:
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None
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--*/
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{
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if (Wow64ApcRoutine)
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{
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(*(PPS_APC_ROUTINE) Wow64ApcRoutine) (
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Argument1,
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Argument2,
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Argument3);
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}
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}
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#endif
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NTSTATUS
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RtlQueueApcWow64Thread(
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IN HANDLE ThreadHandle,
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IN PPS_APC_ROUTINE ApcRoutine,
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IN PVOID ApcArgument1,
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IN PVOID ApcArgument2,
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IN PVOID ApcArgument3
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)
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/*++
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Routine Description:
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This function is used to queue a 32-bit user-mode APC to the specified thread. The APC
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will fire when the specified thread does an alertable wait.
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Note: This function is only used by 64-bit components that want to queue an APC to
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a thread running inside Wow64.
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Arguments:
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ThreadHandle - Supplies a handle to a thread object. The caller
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must have THREAD_SET_CONTEXT access to the thread.
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ApcRoutine - Supplies the address of the APC routine to execute when the
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APC fires.
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ApcArgument1 - Supplies the first PVOID passed to the APC
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ApcArgument2 - Supplies the second PVOID passed to the APC
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ApcArgument3 - Supplies the third PVOID passed to the APC
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Return Value:
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Returns an NT Status code indicating success or failure of the API
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--*/
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{
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#if defined(_WIN64)
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//
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// Setup the jacket routine inside ntdll
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//
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ApcArgument1 = (PVOID)((ULONG_PTR) ApcArgument1 |
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((ULONG_PTR) ApcRoutine << 32 ));
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ApcRoutine = RtlpWow64Apc;
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#endif
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return NtQueueApcThread (
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ThreadHandle,
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ApcRoutine,
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ApcArgument1,
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ApcArgument2,
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ApcArgument3);
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}
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