A - A
B - B
vC - X
^C - Y
<C - LB
>C - RB
Z - LT
R - RT
L - Back
Start - Start
And obviously the d-pad to the d-pad and the main analog to the left analog.
(note for some games, you'd want to swap the Z and L placement, and you can swap the position of vC and B if you want the N64 button positions)