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Find out what writes to this address + Code Breakpoint

 
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BanCheese
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PostPosted: Sun Mar 15, 2015 9:33 pm    Post subject: Find out what writes to this address + Code Breakpoint Reply with quote

I'm currently trying to find the instructions that set my position in a game. I've narrowed it down to one "general" function, but this function calls many others. However, I know the address of the buffer that it's going to copy it to. Unfortunately, this buffer is also used for many other things, though it seems that in between two iterations of the "setPosition" function, the buffer is not used by anything else. Therefore, I would like to have a breakpoint set at the end of that function while simultaneously having "Find out what writes to this address" running. As of right now, this isn't working for me. If I attempt to do both at the same time, (i.e. set breakpoint at func end, program breaks, set "Find out what . . . " on buffer, hit F9) the code breakpoint no longer triggers (the access logger still works, though). As soon as I stop the logger, the code breakpoint starts working again. Is there any way I can use both at the same time? Thanks!
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Zanzer
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PostPosted: Sun Mar 15, 2015 9:47 pm    Post subject: Reply with quote

Just set a breakpoint at an instruction before the one you want instead.
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BanCheese
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PostPosted: Sun Mar 15, 2015 9:53 pm    Post subject: Reply with quote

Hm, maybe I didn't do a good enough job of explaining: If I have a "Find out what's accessing this address" running, code breakpoints will not trigger.
Thanks for answering, though!

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Zanzer
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PostPosted: Sun Mar 15, 2015 11:07 pm    Post subject: Reply with quote

Works fine for me. Maybe it's the debugger?
Edit > Settings > Debugger Options > Use VEH Debugger
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BanCheese
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PostPosted: Sun Mar 15, 2015 11:08 pm    Post subject: Reply with quote

Switched to VEH and now it's working great! Thanks!
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