Nios/chrcpy

Write a function that will copy one character from a string to a second string. Your function will be passed four parameters: The first two parameters specify the source string and character position. The third and fourth parameters specify the destination string and character position. Copy the character. (Don't consider null-termination, overflows, etc.)

int chrcpy (char *src, int src_pos, char *dst, int dst_pos);

Expected solution length: Around 5 lines.

Sample Input

chrcpy("hello", 1, "bye", 1)

Sample Output

"bye" -> "bee"

Src: .string "hello"
.align 2   # Insert padding so it's easier to read.
Dst: .string "bye"
.global _start
_start:
    movia r4, Src
    movi r5, 1
    movia r6, Dst
    movi r6, 1
    call chrcpy
    1: br 1b    # Done

# Copy a character from one string to another
chrcpy:

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nios/chrcpy

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Nios/chrcpy

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