What is the output of the function main

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Reference no: EM132261014

Consider the following ARM Assembly:

fn_asm:

add r1, r0, r1

bx lr

Consider the following C code:

#include <stdio.h>

extern int fn_asm(int a, int b);

int main(int argc, char *argv[])

{

printf("%dn", fn_asm(5,8));

return 0;

}

a. What is the output of the function main?

b. Is there a benefit to using Assembly vs. C in this example

c. Describe the function of bx lr.

Reference no: EM132261014

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