Systems

Question 7

Question 7 options:

Consider the code fragment below. What value is pushed onto the stack by the callinstruction?

0x400627 
 callq 0x4004a0  x 0x40062c 
 mov $0x400745,%edi

Question 4 (2 points)

Given the array declaration below, which one of the following is equivalent to a[4]?

int a[10];

Question 4 options:

	*( a + 4 )
	*( a + 1 )
	*a + 1
	*(a + 16)
	none of these

Question 5 (2 points)

Suppose we have declared an array: short a[10], and that a is stored in %rax and i is stored in %rdx.

Which one of the following instructions would set a[i] to be 8?

Question 5 options:

	movw $8, 2(%rax, %rdx,2)
	movw $8, (%rax, %rdx, 2)
	movw $8, 2(%rax, %rdx)
	movw $8, (%rax, %rdx, 4)
	none of these

Hide hint for Question 7
think hexadecimal