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redirectmethodfuncwithintparameter
2014 Nov 29
3
[LLVMdev] Frontend: How to use Member to Function Pointer as callbacks
...argets[1];
...
Thunk4095: jmp thunkTargets[4095];
- When I call a C function from C# with a callback, what happens is:
- Find an unused slot in this thunk table (X)
- Register C# member to function pointer in ThunkIdToFuncPtr[X]
- Replace thunkTargets[X] with pointer address to
"RedirectMethodFuncWithIntParameter" (one such function per callback
signature)
- This redirect method would receive arguments unmodified from C
functions (since previous call was a simple jmp)
- It would check in the call stack the current slot X being called (up
in the callstack, if call instruction is "call Thu...