.global calculate_sum
calculate_sum:
	# %rdi is the address of the first item in the list

# This moves the first item to eax
#	movl (%rdi), %eax

# 8 because of structure padding
# This finds the second item
#	add $8, %rdi
#	mov (%rdi), %rdi
#	movl (%rdi), %eax
	xor %rax, %rax
loop_top:
	cmp $0, %rdi
	je end

# Add the item we're on into eax, which is our sum
	movl (%rdi), %edx
	addl %edx, %eax

# traverse one item of the list
	add $4, %rdi
	mov (%rdi), %rdi
	jmp loop_top
	
end:
	# Sum needs to be in rax
	ret

.global calculate_sum_and_count
calculate_sum_and_count:
	# %rdi is the address of the first item in the list
	# %rsi holds a pointer to the place our sum should go
	xor %rcx, %rcx
	xor %rax, %rax
loop_top_csac:
	cmp $0, %rdi
	je end_csac

# Add the item we're on into eax, which is our sum
	movl (%rdi), %edx
	addl %edx, %ecx
	inc %rax

# traverse one item of the list
	add $4, %rdi
	mov (%rdi), %rdi
	jmp loop_top_csac
	
end_csac:
	cmp $0, %rsi
	je not_set_sum
	movl %ecx, (%rsi)
not_set_sum:
	# Sum needs to be in rax
	ret