The purpose of this assignment is for you to become better at comprehending x86-64 assembly language. We will not write assembly language programs. Instead, in this assignment you are given 5 functions in x86-64 assembly language. Your task is to reverse engineer these 5 functions by writing them in C. Each correct answer is worth 1 point.

Your C code does not have to compile into exactly the same .s code that I have given you. Rather, you will be graded on whether or not your C functions properly emulate the assembly language; that is, they both should return the same value provided they are passed the same values as parameters.

f5:

cmpl $1, %esi

jle .L28

movl 4(%rdi), %eax

cmpl %eax, (%rdi)

jg .L30

addq $4, %rdi

subl $1, %esi

xorl %eax, %eax

jmp .L26

.L27:

movl (%rdi), %edx

addq $4, %rdi

cmpl (%rdi), %edx

jg .L30

.L26:

addl $1, %eax

cmpl %esi, %eax

jne .L27

.L28:

movl $1, %eax

ret

.L30:

xorl %eax, %eax

ret