Changeset 18770 in vbox for trunk/src/recompiler_new

Timestamp:

Apr 6, 2009 3:00:15 PM (16 years ago)

Author:

vboxsync

Message:

Fake rdpmc instead of causing an invalid opcode exception.

File:

• trunk/src/recompiler_new/target-i386/op_helper.c (modified) (2 diffs)

trunk/src/recompiler_new/target-i386/op_helper.c

@@ -3700 +3700 @@
 void helper_rdpmc(void)
 {
+#ifdef VBOX
+    /* If X86_CR4_PCE is *not* set, then CPL must be zero. */
+    if (!(env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
+        raise_exception(EXCP0D_GPF);
+    }
+    /* Just return zero here; rather tricky to properly emulate this, especially as the specs are a mess. */
+    EAX = 0;
+    EDX = 0;
+#else
     if ((env->cr[4] & CR4_PCE_MASK) && ((env->hflags & HF_CPL_MASK) != 0)) {
         raise_exception(EXCP0D_GPF);
@@ -3707 +3716 @@
     /* currently unimplemented */
     raise_exception_err(EXCP06_ILLOP, 0);
+#endif
 }