i need help with my assembly assignment

$0$x$0000000000401576<+0>$: sub $$0$x$8,\%$rsp

$0$x$000000000040157$a $<+4>$: cmp $$0$x$4,\%$rdi

$0$x$000000000040157$e $<+8>$: jne $0$x$4015$a$0$

$0$x$0000000000401580<+10>$: mov $$0$x$1$f$1,\%$eax

$0$x$0000000000401585<+15>$: sub $\%$rsi,$\%$rax

$0$x$0000000000401588<+18>$: not $\%$rax

$0$x$000000000040158$b $<+21>$: xor $\%$rax,$\%$r$8$

$0$x$000000000040158$e $<+24>$: cmp $$0$xffffffffffffff$38,\%$r$8$

$0$x$0000000000401595<+31>$: sete $\%$al

$0$x$0000000000401598<+34>$: movzbl $\%$al$,\%$eax

$0$x$000000000040159$b $<+37>$: cmp $\%$rdx$,\%$r$8$

$0$x$000000000040159$e $<+40>$: je $0$x$4015$ac

$0$x$00000000004015$a$0<+42>$: callq $0$x$401$e$8$d

$0$x$00000000004015$a$5<+47>$: mov $$0$xffffffffbc$0$a$2$e$40,\%$rax

$0$x$00000000004015$ac $<+54>$: add $$0$x$8,\%$rsp

$0$x$00000000004015$b$0<+58>$: retq