Changeset 1461 in vbox

Timestamp:

Mar 14, 2007 9:39:09 AM (18 years ago)

Author:

vboxsync

Message:

Don't forget segment override prefix bytes in patch jumps and calls.

File:

• trunk/src/VBox/VMM/PATM/PATMPatch.cpp (modified) (2 diffs)

trunk/src/VBox/VMM/PATM/PATMPatch.cpp

@@ -691 +691 @@
          */
         offset = 0;
+        /* include prefix byte to make sure we don't use the incorrect selector register. */
+        if (pCpu->prefix & PREFIX_SEG)
+            pPB[offset++] = pCpu->prefix_seg;
         pPB[offset++] = 0xFF;              // push r/m32
         pPB[offset++] = MAKE_MODRM(MODRM_MOD(pCpu->ModRM), 6 /* group 5 */, MODRM_RM(pCpu->ModRM));
@@ -784 +787 @@
      */
     offset = 0;
+    /* include prefix byte to make sure we don't use the incorrect selector register. */
+    if (pCpu->prefix & PREFIX_SEG)
+        pPB[offset++] = pCpu->prefix_seg;
+
     pPB[offset++] = 0xFF;              // push r/m32
     pPB[offset++] = MAKE_MODRM(MODRM_MOD(pCpu->ModRM), 6 /* group 5 */, MODRM_RM(pCpu->ModRM));