Changeset 9574

Timestamp:

06/10/08 17:19:00 (6 months ago)

Author:

vboxsync

Message:

Mask away invalid parts of the cpu context in CPUMSetGuestCtxCore.

Files:

• trunk/src/VBox/VMM/VMMAll/CPUMAllRegs.cpp (modified) (1 diff)

trunk/src/VBox/VMM/VMMAll/CPUMAllRegs.cpp

@@ -393 +393 @@
-    /** @todo #1410 requires selectors to be checked. */
-
-
+= 
-    *pCtxCoreDst = *pCtxCore;
+
+    /* Mask away invalid parts of the cpu context. */
+    if (CPUMGetGuestMode(pVM) != CPUMMODE_LONG)
+    {
+        uint64_t u64Mask = UINT64_C(0xffffffff);
+
+        pCtxCoreDst->rip        &= u64Mask;
+        pCtxCoreDst->rax        &= u64Mask;
+        pCtxCoreDst->rbx        &= u64Mask;
+        pCtxCoreDst->rcx        &= u64Mask;
+        pCtxCoreDst->rdx        &= u64Mask;
+        pCtxCoreDst->rsi        &= u64Mask;
+        pCtxCoreDst->rdi        &= u64Mask;
+        pCtxCoreDst->rbp        &= u64Mask;
+        pCtxCoreDst->rsp        &= u64Mask;
+        pCtxCoreDst->rflags.u   &= u64Mask;
+
+        pCtxCoreDst->r8         = 0;
+        pCtxCoreDst->r9         = 0;
+        pCtxCoreDst->r10        = 0;
+        pCtxCoreDst->r11        = 0;
+        pCtxCoreDst->r12        = 0;
+        pCtxCoreDst->r13        = 0;
+        pCtxCoreDst->r14        = 0;
+        pCtxCoreDst->r15        = 0;
+    }
-}
-