Changeset 41285 in vbox for trunk/src/VBox/Debugger

Timestamp:

May 14, 2012 2:20:59 PM (13 years ago)

Author:

vboxsync

svn:sync-xref-src-repo-rev:

77947

Message:

DBG: IOPM bitmap cannot overlap the fixed TSS portion (says AMD).

File:

• trunk/src/VBox/Debugger/DBGCEmulateCodeView.cpp (modified) (1 diff)

trunk/src/VBox/Debugger/DBGCEmulateCodeView.cpp

@@ -3485 +3485 @@
 
     /*
-     * Dump the I/O bitmap if present.
+     * Dump the I/O permission bitmap if present. The IOPM cannot start below offset 0x64
+     * (that applies to both 32-bit and 64-bit TSSs since their size is the same).
      */
     if (enmTssType != kTss16)
     {
-        if (offIoBitmap < cbTss)
+        if (offIoBitmap < cbTss && offIoBitmap >= 0x64)
         {
             uint32_t        cPorts      = RT_MIN((cbTss - offIoBitmap) * 8, _64K);