Question: Hello, I am having trouble understanding how to convert assembly code back to C: The equivalent code in C A line-by-line explanation of the function

Hello, I am having trouble understanding how to convert assembly code back to C:

  • The equivalent code in C
  • A line-by-line explanation of the function of the code

Assembly Code

C Code

Explanation

movl -8(%rbp), %eax

sall $3, %eax

subl $3, %eax

movl %eax, -4(%rbp)

Assembly Code

C Code

Explanation

movl -8(%rbp), %eax

sall $2, %eax

subl $1, %eax

leal 7(%rax), %edx

testl %eax, %eax

cmovs %edx, %eax

sarl $3, %eax

movl %eax, -4(%rbp)

Assembly Code

C Code

Explanation

movl -8(%rbp), %eax

leal 7(%rax), %edx

testl %eax, %eax

cmovs %edx, %eax

sarl $3, %eax

movl -8(%rbp), %edx

sall $2, %edx

addl %edx, %eax

movl %eax, -4(%rbp)

Any help would be greatly appreciated!

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