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CS2400-Homework 4 Solved

Write an ARM program to

•        in the data area, o declare and initialize two NULL-terminated strings labeled as StrOne, and StrTwo.

o   define a symbolic name called MAX_LEN and equivalent it with a number like 100 or greater. (Hint:

EQU must be used here.) o reserved a chunk of zeroed memory with a size of (MAX_LEN + 1), label this chunk of memory as MixStr.  (You may assume that the sum of the lengths of StrOne and StrTwo is no greater than

MAX_LEN)

o   Store each one of the above three labels as a word with an address label, e.g., “adrStrOne DCD StrOne” for StrOne, and EXPORT each address label, e.g., “EXPORT adrStrOne”.

•        in the main program, o Merge the first string labeled by StrOne and the second string labeled by StrTwo in a unit of one.  

o   Store the ASCII string as a NULL-terminated string to memory labeled as MixStr o If one string is longer than the other one, just copy the rest of the longer one to MixStr

o   E.g., “Hello Metro State!” and “I like assembly programming.” should be mixed as “HIe llliok eM eatsrsoe mSbtlayt ep!rogramming.” 

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