Changeset 100149 in vbox for trunk/src/VBox/VMM/VMMAll/IEMAllThreadedFunctions.cpp

Timestamp:

Jun 10, 2023 8:49:28 PM (22 months ago)

Author:

vboxsync

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

157844

Message:

VMM/IEM: Emit extra mode-check after CIMPL calls with the IEM_CIMPL_F_MODE or IEM_CIMPL_F_XCPT flags set. bugref:10369

File:

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

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

@@ -595 +595 @@
 
 
+/**
+ * Built-in function that compares the fExec mask against uParam0.
+ */
+static IEM_DECL_IMPL_DEF(VBOXSTRICTRC, iemThreadedFunc_BltIn_CheckMode,
+                         (PVMCPU pVCpu, uint64_t uParam0, uint64_t uParam1, uint64_t uParam2))
+{
+    uint32_t const fExpectedExec = (uint32_t)uParam0;
+    if (pVCpu->iem.s.fExec == fExpectedExec)
+        return VINF_SUCCESS;
+    Log12(("Mode changed at %04x:%08RX64: %#x -> %#x (xor: %#x)\n", pVCpu->cpum.GstCtx.cs.Sel, pVCpu->cpum.GstCtx.rip,
+           fExpectedExec, pVCpu->iem.s.fExec, fExpectedExec ^ pVCpu->iem.s.fExec));
+    RT_NOREF(uParam1, uParam2);
+    return VINF_IEM_REEXEC_MODE_CHANGED;
+}
+
 /*
  * The threaded functions.