ABI Compliance

Write a program with a global variable named my_var of type int (32 bits), initialized with the value 10 and a function void increment_my_var() that increments 1 to this global variable.

Assistant Link
Write a program that uses only caller-save registers and the sp and ra registers, it must have a function called 'my_function' that receives three values and does the following:
- Computes the sum of the first two values: SUM 1
- Calls a function called mystery_function passing SUM 1 and the first value as parameters in this order: CALL 1
- Computes the difference between the second value and the returned value of the mystery_function (CALL 1): DIFF 1
- Sums the third value to the difference (DIFF 1): SUM 2
- Calls mystery_function again passing the sum above (SUM 2) and the second value as parameters in this order: CALL 2
- Computes the difference between the third value and the returned value of the mystery_function above (CALL 2): DIFF 2
- Sums the difference above (DIFF 2) with SUM 2: SUM 3
- Returns SUM 3
- The C code below exemplifies these steps
```
int my_function(int a, int b, int c){
int aux = b - mystery_function(a+b, a) + c;
return c - mystery_function(aux, b) + aux;
};
```
Assistant Link

Convert the following C function to assembly code. Note: char and short values are extended to 32 bits when stored in the program stack.

int operation(){
    int a = 1;
    int b = -2;
    short c = 3;
    short d = -4;
    char e = 5;
    char f = -6;
    int g = 7;
    int h = -8;
    char i = 9;
    char j = -10;
    short k = 11;
    short l = -12;
    int m = 13;
    int n = -14;
    return mystery_function(a, b, c, d, e, f, g, h, i, j, k, l, m, n);
}

Assistant Link

Convert the following C function to assembly code. Note: char and short values are extended to 32 bits when stored in the program stack.

int operation(int a, int b, short c, short d, char e, char f, int g, int h, char i, char j, short k, short l, int m, int n){
    return b + c - f + h + k - m;
};

Assistant Link

Convert the following C function to assembly code.

int operation(int a, int b, int c, int d, int e, int f, int g, int h, int i, int j, int k, int l, int m, int n){
    return mystery_function(n, m, l, k, j, i, h, g, f, e, d, c, b, a);
};

Assistant Link