Question: Write a sub routine in ARM assembly language (on the raspberry PI) to find the substring of a string. The string and its starting and

Write a sub routine in ARM assembly language (on the raspberry PI) to find the substring of a string. The string and its starting and ending index are passed in C and in the subroutine r0 is the input string, r1 is the starting index and r2 is the ending index. How do return a substring being that the return type is char pointer.

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