Nios/hexstr

Write a function that converts a 32-bit hexadecimal number into an ASCII character string. For digits 0xa through 0xf, use lower-case ('a' through 'f'). Don't include any leading zeros, but always output at least one digit (so 0x00001000 should print "1000", and 0x00000000 should output "0"). Make sure the output string is null-terminated.

There are two parameters to your function. The first parameter is the location to where you should write the output string. The second parameter is the number to process.

Sample Input

0x12345678

Sample Output

"12345678"

# A test case to test your function with
MyString: .skip 12    # Reserve some space to hold the output string

.global _start
_start:
    movia r4, MyString     # First parameter: Where to write
    movia r5, 0x12345678   # Second parameter: The number to process
    call hexstr
    br _start        # End of testing code

# Convert number to string
hexstr:

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