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.

f2:

cmpl %edx, %edi

sete %dl

xorl %eax, %eax

cmpl %esi, %edi

sete %al

andl %edx, %eax

ret

f3:

movq %rdi, %rax

notq %rax

shrq $63, %rax

ret

f4:

cmpl $1, %edi

jle .L9

addl $1, %edi

movl $2, %edx

movl $1, %eax

.L8:

imull %edx, %eax

addl $1, %edx

cmpl %edi, %edx

jne .L8

ret

.L9:

movl $1, %eax

ret

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