Changeset 8830 in vbox for trunk/src/VBox/VMM/PATM/PATM.cpp

Timestamp:

May 15, 2008 2:46:57 AM (17 years ago)

Author:

vboxsync

Message:

dtrace experiments.

File:

• trunk/src/VBox/VMM/PATM/PATM.cpp (modified) (3 diffs)

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

@@ -1376 +1376 @@
         return VINF_SUCCESS;
 
+#ifdef DTRACE_EXPERIMENT
+    case OP_MOV: /* dtrace changes push ebp; mov ebp, esp; into lock mov ebp, esp */
+        if (pCpu->prefix & PREFIX_LOCK)
+        {
+            Log(("illegal lock sequence -> return here\n"));
+            return VINF_SUCCESS;
+        }
+#endif
+
     case OP_STI:
     case OP_POPF:
@@ -1515 +1524 @@
         return VINF_SUCCESS;
 
+#ifdef DTRACE_EXPERIMENT
+    case OP_MOV: /* dtrace changes push ebp; mov ebp, esp; into lock mov ebp, esp */
+        if (pCpu->prefix & PREFIX_LOCK)
+        {
+            Log(("illegal lock sequence -> return here\n"));
+            return VINF_SUCCESS;
+        }
+#endif
+
     case OP_IRET:
     case OP_SYSEXIT: /* will fault or emulated in GC */
@@ -1653 +1671 @@
 
     case OP_MOV:
+#ifdef DTRACE_EXPERIMENT
+        /* dtrace changes push ebp; mov ebp, esp; into lock mov ebp, esp */
+        if (pCpu->prefix & PREFIX_LOCK)
+        {
+            rc = patmPatchGenIllegalInstr(pVM, pPatch);
+            Log(("illegal lock sequence -> return here\n"));
+            if (VBOX_SUCCESS(rc))
+                rc = VINF_SUCCESS;  /* exit point by definition */
+            break;
+        }
+#endif
         if (pCpu->pCurInstr->optype & OPTYPE_POTENTIALLY_DANGEROUS)
         {