From aa17be6eb3579a08c49d396b668e59ba0e4b7cc4 Mon Sep 17 00:00:00 2001
From: belliash <belliash@codingworkshop.eu.org>
Date: Sun, 29 Oct 2023 19:59:21 +0100
Subject: [PATCH] Implement KeSetTargetProcessorDpc() routine

---
 sdk/xtdk/kefuncs.h     |  5 +++++
 xtoskrnl/ke/dpc.c      | 21 +++++++++++++++++++++
 xtoskrnl/xtoskrnl.spec |  1 +
 3 files changed, 27 insertions(+)

diff --git a/sdk/xtdk/kefuncs.h b/sdk/xtdk/kefuncs.h
index a2a75f2..108d3f3 100644
--- a/sdk/xtdk/kefuncs.h
+++ b/sdk/xtdk/kefuncs.h
@@ -69,4 +69,9 @@ KeReleaseSemaphore(IN PKSEMAPHORE Semaphore,
                    IN LONG Adjustment,
                    IN BOOLEAN Wait);
 
+XTAPI
+VOID
+KeSetTargetProcessorDpc(IN PKDPC Dpc,
+                        IN CCHAR Number);
+
 #endif /* __XTDK_KEFUNCS_H */
diff --git a/xtoskrnl/ke/dpc.c b/xtoskrnl/ke/dpc.c
index cd521a7..6fb34df 100644
--- a/xtoskrnl/ke/dpc.c
+++ b/xtoskrnl/ke/dpc.c
@@ -91,3 +91,24 @@ KepRetireDpcList(IN PKPROCESSOR_CONTROL_BLOCK Prcb)
 {
     UNIMPLEMENTED;
 }
+
+/**
+ * Sets the target processor number for DPC.
+ *
+ * @param Dpc
+ *        Supplies a pointer to the DPC object.
+ *
+ * @param Number
+ *        Supplies the target processor number.
+ *
+ * @return This routine does not return any value.
+ *
+ * @since NT 4.0
+ */
+XTAPI
+VOID
+KeSetTargetProcessorDpc(IN PKDPC Dpc,
+                        IN CCHAR Number)
+{
+    Dpc->Number = MAXIMUM_PROCESSORS + Number;
+}
diff --git a/xtoskrnl/xtoskrnl.spec b/xtoskrnl/xtoskrnl.spec
index a0d83a6..9ecfd35 100644
--- a/xtoskrnl/xtoskrnl.spec
+++ b/xtoskrnl/xtoskrnl.spec
@@ -16,6 +16,7 @@
 @ stdcall KeInitializeTimerEx(ptr long)
 @ stdcall KeReadSemaphoreState(ptr)
 @ stdcall KeReleaseSemaphore(ptr long long long)
+@ stdcall KeSetTargetProcessorDpc(ptr long)
 @ stdcall RtlCompareMemory(ptr ptr long)
 @ stdcall RtlCopyMemory(ptr ptr long)
 @ stdcall RtlFillMemory(ptr long long)