Changeset 38300 in vbox for trunk/src/recompiler/VBoxRecompiler.c

Timestamp:

Aug 3, 2011 11:58:41 AM (14 years ago)

Author:

vboxsync

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

73308

Message:

REM,PGM: Fix A20 syncing between the VMM and the recompiler.

File:

• trunk/src/recompiler/VBoxRecompiler.c (modified) (2 diffs)

trunk/src/recompiler/VBoxRecompiler.c

@@ -2160 +2160 @@
 
     /*
+     * Sync the A20 gate.
+     */
+    bool fA20State = PGMPhysIsA20Enabled(pVCpu);
+    if (fA20State != RT_BOOL(pVM->rem.s.Env.a20_mask & RT_BIT(20)))
+    {
+        ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll);
+        cpu_x86_set_a20(&pVM->rem.s.Env, fA20State);
+        ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll);
+    }
+
+    /*
      * Registers which are rarely changed and require special handling / order when changed.
      */
@@ -2941 +2952 @@
 #undef LOG_GROUP
 #define LOG_GROUP LOG_GROUP_REM
-
-
-/**
- * Notify the recompiler about Address Gate 20 state change.
- *
- * This notification is required since A20 gate changes are
- * initialized from a device driver and the VM might just as
- * well be in REM mode as in RAW mode.
- *
- * @param   pVM         VM handle.
- * @param   pVCpu       VMCPU handle.
- * @param   fEnable     True if the gate should be enabled.
- *                      False if the gate should be disabled.
- */
-REMR3DECL(void) REMR3A20Set(PVM pVM, PVMCPU pVCpu, bool fEnable)
-{
-    LogFlow(("REMR3A20Set: fEnable=%d\n", fEnable));
-    VM_ASSERT_EMT(pVM);
-
-    ASMAtomicIncU32(&pVM->rem.s.cIgnoreAll);
-    cpu_x86_set_a20(&pVM->rem.s.Env, fEnable);
-    ASMAtomicDecU32(&pVM->rem.s.cIgnoreAll);
-}