[ros-diffs] [tkreuzer] 47564: [NTOSKRNL] Implement KeRegisterInterruptHandler and KeQueryInterruptHandler for amd64

Author: tkreuzer
Date: Fri Jun  4 12:51:44 2010
New Revision: 47564

URL: http://svn.reactos.org/svn/reactos?rev=47564&view=rev
Log:
[NTOSKRNL]
Implement KeRegisterInterruptHandler and KeQueryInterruptHandler for amd64

Modified:
    trunk/reactos/ntoskrnl/include/internal/amd64/ke.h

Modified: trunk/reactos/ntoskrnl/include/internal/amd64/ke.h
URL:
http://svn.reactos.org/svn/reactos/trunk/reactos/ntoskrnl/include/internal/…
==============================================================================
--- trunk/reactos/ntoskrnl/include/internal/amd64/ke.h [iso-8859-1] (original)
+++ trunk/reactos/ntoskrnl/include/internal/amd64/ke.h [iso-8859-1] Fri Jun  4 12:51:44
2010
@@ -155,6 +155,52 @@
 #else
     /* Nothing to do */
 #endif
+}
+
+/* Registers an interrupt handler with an IDT vector */
+FORCEINLINE
+VOID
+KeRegisterInterruptHandler(IN ULONG Vector,
+                           IN PVOID Handler)
+{                           
+    UCHAR Entry;
+    PKIDTENTRY64 Idt;
+
+    /* Get the entry from the HAL */
+    Entry = HalVectorToIDTEntry(Vector);
+
+    /* Now set the data */
+    Idt = &KeGetPcr()->IdtBase[Entry];
+    Idt->OffsetLow = (ULONG_PTR)Handler & 0xffff;
+    Idt->OffsetMiddle = ((ULONG_PTR)Handler >> 16) & 0xffff;
+    Idt->OffsetHigh = (ULONG_PTR)Handler >> 32;
+    Idt->Selector = KGDT64_R0_CODE;
+    Idt->IstIndex = 0;
+    Idt->Type = 0x0e;
+    Idt->Dpl = 0;
+    Idt->Present = 1;
+    Idt->Reserved0 = 0;
+    Idt->Reserved1 = 0;
+}
+
+/* Returns the registered interrupt handler for a given IDT vector */
+FORCEINLINE
+PVOID
+KeQueryInterruptHandler(IN ULONG Vector)
+{
+    UCHAR Entry;
+    PKIDTENTRY64 Idt;
+
+    /* Get the entry from the HAL */
+    Entry = HalVectorToIDTEntry(Vector);
+
+    /* Get the IDT entry */
+    Idt = &KeGetPcr()->IdtBase[Entry];
+
+    /* Return the address */
+    return (PVOID)((ULONG64)Idt->OffsetHigh << 32 | 
+                   (ULONG64)Idt->OffsetMiddle << 16 | 
+                   (ULONG64)Idt->OffsetLow);
 }
 
 VOID