62 lines
1.7 KiB
Lua
62 lines
1.7 KiB
Lua
onfunction=onfunction or {}
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function onfunction.install()
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ModData=engine.installMod("dfusion/onfunction/functions.o","functions",4)
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modpos=ModData.pos
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modsize=ModData.size
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onfunction.pos=modpos
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trgpos=engine.getpushvalue()
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print(string.format("Function installed in:%x function to call is: %x",modpos,trgpos))
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local firstpos=modpos+engine.FindMarker(ModData,"function")
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engine.poked(firstpos,trgpos-firstpos-4) --call Lua-Onfunction
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onfunction.fpos=modpos+engine.FindMarker(ModData,"function3")
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engine.poked(modpos+engine.FindMarker(ModData,"function2"),modpos+modsize)
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engine.poked(onfunction.fpos,modpos+modsize)
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SetExecute(modpos)
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onfunction.calls={}
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onfunction.functions={}
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onfunction.names={}
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onfunction.hints={}
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end
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function OnFunction(values)
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--[=[print("Onfunction called!")
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print("Data:")
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for k,v in pairs(values) do
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print(string.format("%s=%x",k,v))
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end
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print("stack:")
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for i=0,3 do
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print(string.format("%d %x",i,engine.peekd(values.esp+i*4)))
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end
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--]=]
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if onfunction.functions[values.ret] ~=nil then
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onfunction.functions[values.ret](values)
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end
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return onfunction.calls[values.ret] --returns real function to call
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end
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function onfunction.patch(addr)
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if(engine.peekb(addr)~=0xe8) then
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error("Incorrect address, not a function call")
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else
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onfunction.calls[addr+5]=addr+engine.peekd(addr+1)+5 --adds real function to call
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engine.poked(addr+1,engine.getmod("functions")-addr-5)
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end
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end
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function onfunction.AddFunction(addr,name,hints)
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onfunction.patch(addr)
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onfunction.names[name]=addr+5
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if hints~=nil then
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onfunction.hints[name]=hints
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end
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end
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function onfunction.SetCallback(name,func)
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if onfunction.names[name]==nil then
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error("No such function:"..name)
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else
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onfunction.functions[onfunction.names[name]]=func
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end
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end
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