banan-os/kernel/arch/x86_64/crtn.S

/* x86-64 crtn.s */
.section .init
	/* gcc will nicely put the contents of crtend.o's .init section here. */
	popq %rbp
	ret

.section .fini
	/* gcc will nicely put the contents of crtend.o's .fini section here. */
	popq %rbp
	ret