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Protect against stack overflow caused by deep recursive calls

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* PPTC version bump

* Also reset call depth when not using the unmanaged dispatch loop

* Increment call depth on function start rather than before call
This commit is contained in:
gdkchan
2025-08-20 12:18:17 -05:00
committed by KeatonTheBot
parent f63cb962ad
commit 6b08ba47c4
10 changed files with 83 additions and 11 deletions
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src/ARMeilleure/Translation/TranslatorStubs.cs
+8
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@@ -262,10 +262,18 @@ namespace ARMeilleure.Translation
Operand runningAddress = context.Add(nativeContext, Const((ulong)NativeContext.GetRunningOffset()));
Operand dispatchAddress = context.Add(nativeContext, Const((ulong)NativeContext.GetDispatchAddressOffset()));
Operand callDepthAddress = context.Add(nativeContext, Const((ulong)NativeContext.GetCallDepthOffset()));
EmitSyncFpContext(context, nativeContext, true);
context.MarkLabel(beginLbl);
if (Optimizations.EnableDeepCallRecursionProtection)
{
// Reset the call depth counter, since this is our first guest function call.
context.Store(callDepthAddress, Const(0));
}
context.Store(dispatchAddress, guestAddress);
context.Copy(guestAddress, context.Call(Const((ulong)DispatchStub), OperandType.I64, nativeContext));
context.BranchIfFalse(endLbl, guestAddress);