Changeset 5610 in vbox for trunk/src/VBox/VMM/PATM/VMMGC

Timestamp:

Nov 2, 2007 11:10:07 AM (17 years ago)

Author:

vboxsync

Message:

Fixed boundary checks and support partial instruction updates (e.g. destination address of jmp instruction)

File:

• trunk/src/VBox/VMM/PATM/VMMGC/PATMGC.cpp (modified) (1 diff)

trunk/src/VBox/VMM/PATM/VMMGC/PATMGC.cpp

@@ -108 +108 @@
     if (pPatchPage)
     {
-        if (    pPatchPage->pLowestAddrGC  <= (RTGCPTR)((RTGCUINTPTR)GCPtr + cbWrite)
-            ||  pPatchPage->pHighestAddrGC > GCPtr)
+        if (    pPatchPage->pLowestAddrGC  > (RTGCPTR)((RTGCUINTPTR)GCPtr + cbWrite - 1)
+            ||  pPatchPage->pHighestAddrGC < GCPtr)
         {
             /* This part of the page was not patched; try to emulate the instruction. */