how to debug linux kernel of WNR3500L

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Phoebe
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how to debug linux kernel of WNR3500L

 I bought a WNR3500L which is a kind of opensource router. I need to modify the linux kernel to satisfy my opplication. but I have a problem with debugging this kernel. Please tell me how to debug this kernel. what is the steps? hardware's connection and what tools should I need? thanks a lot!

Phoebe
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firstly,I should say "thank

firstly,I should say "thank you!" to you. it is pity that your answer is not what I want. I want to know that how jtag cable is connected to the jtag slot of router and what does every pin mean ,what tools should I use to communicate with cpu ,and so on. nevertheless I'd be very grateful for your answer!