Changeset 100696 in vbox for trunk/src/VBox/VMM/VMMAll

Timestamp:

Jul 25, 2023 12:01:00 PM (19 months ago)

Author:

vboxsync

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

158540

Message:

VMM/IEM: TB instruction count initialization and overflow prot. bugref:10369

File:

• trunk/src/VBox/VMM/VMMAll/IEMAllThreadedRecompiler.cpp (modified) (2 diffs)

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

@@ -226 +226 @@
 
 #define IEM_MC2_END_EMIT_CALLS() \
-        pTb->cInstructions++; \
+        Assert(pTb->cInstructions <= pTb->Thrd.cCalls); \
+        if (pTb->cInstructions < 255) \
+            pTb->cInstructions++; \
     } while (0)
 
@@ -624 +626 @@
                 pTb->x86.fAttr              = (uint16_t)pVCpu->cpum.GstCtx.cs.Attr.u;
                 pTb->fFlags                 = (pVCpu->iem.s.fExec & IEMTB_F_IEM_F_MASK) | fExtraFlags;
+                pTb->cInstructions          = 0;
 
                 /* Init the first opcode range. */