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a) Consider a method train is going to call another method compute. The compute method has two input parameters and three local variables. It also

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a) Consider a method "train" is going to call another method "compute". The "compute" method has two input parameters and three local variables. It also needs to use registers R5, RO, R7 & R8, which are also used by the "train" method. What steps are necessary within the "compute" method to protect these registers, to use input parameters and local variables and finally to safely return to the "train" method? Note: Assume that a stack is in place and the "train" method has already pushed the input parameters to stack for the "compute" method. You are using the 'callee saved' approach. og a) Consider a method "train" is going to call another method "compute". The "compute" method has two input parameters and three local variables. It also needs to use registers R5, RO, R7 & R8, which are also used by the "train" method. What steps are necessary within the "compute" method to protect these registers, to use input parameters and local variables and finally to safely return to the "train" method? Note: Assume that a stack is in place and the "train" method has already pushed the input parameters to stack for the "compute" method. You are using the 'callee saved' approach. og

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