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executeCodeLocal Error:Access violation

 
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Filipe_Br
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PostPosted: Fri Nov 23, 2018 7:50 pm    Post subject: executeCodeLocal Error:Access violation Reply with quote
If I run this script with the CE process connected in I get this error: Error: Failure determining what func means. But if another process is connected, I get this other: Error: Access violation.
After all, what is wrong?

Code:
autoAssemble([[
    alloc(func, 100)
    registersymbol(func)

    func:
        ret
]], true, false)

executeCodeLocal('func')


Edit: CE 6.8.1 x86
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ParkourPenguin
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PostPosted: Fri Nov 23, 2018 9:33 pm    Post subject: Reply with quote
I don't know what that first error is, but the second error can be explained by reading documentation in celua.txt:
Quote:
executeCodeLocal(addres, parameter OPTIONAL): address - Executes a stdcall function with 1 parameter at the given address in the target process.

stdcall is callee-cleanup. Regardless of whether or not you passed an argument in Lua, the space for the parameter still exists, and you need to clean that up by using ret 4.
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Filipe_Br
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PostPosted: Sat Nov 24, 2018 5:29 am    Post subject: Reply with quote
I was able to find out the reason for the error, it is a bug in CE x86. In the x64 version it works without errors.
The solution I found to this problem was in EC x86 was this.
Code:
executeCodeLocal( getAddress('func', true) )

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