Extend the AddPacked procedure from Section 7.6.1 so that it adds two packed decimal integers of arbitrary size (both lengths must be the same). Write a test program that passes AddPacked several pairs of integers: 4-byte, 8-byte, and 16-byte. We suggest that you use the following registers to pass information to the procedure:

ESI - pointer to the first number EDI - pointer to the second number EDX - pointer to the sum ECX - number of bytes to add