Exercise 1 [Arithmetic Operations Consider the following assembly code for a fun

Question

Exercise 1 [Arithmetic Operations Consider the following assembly code for a function F1 with two integer arguments F1: push EBP mov EBP, ESP # setup stack mov EDX, DWORD PTR [ebp+12] mov EAX, DWORD PTR [ebp+8] add EAX, EAX #EAX #EAX # ignore for now # cleanup stack add EAX, EDX mov DWORD PTR [ebp-4], EAX mov ESP, EBP pop EBP ret To the right of each instruction, show the contents of the register whose value changes as a result of executing that instruction, then fill in the blanks in the corresponding C source code below. do not use Note: you may only use the symbolic variables x, y in your expressions below register names int Fl (int x, int y) int result; result - return result;

Explanation / Answer

Answer:

Result = 2x+y;

Explanation:

EAX contains x; EDX contains y

For the instruction

ADD EAX,EAX; x= x+x = 2x

ADD EAX,EDX; X = 2x+y

Therefore result will be 2x+y

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