	.section	__TEXT,__text,regular,pure_instructions
	.build_version macos, 13, 0	sdk_version 13, 3
	.p2align	4, 0x90                         ## -- Begin function update_cksum
_update_cksum:                          ## @update_cksum
	.cfi_startproc
## %bb.0:
	pushq	%rbp
	.cfi_def_cfa_offset 16
	.cfi_offset %rbp, -16
	movq	%rsp, %rbp
	.cfi_def_cfa_register %rbp
	pushq	%rbx
	pushq	%rax
	.cfi_offset %rbx, -24
	movq	%rdi, %rbx
	movl	$0, (%rdi)
	xorl	%edi, %edi
	callq	_ntohs
	movzwl	%ax, %ecx
                                        ## kill: def $eax killed $eax killed $rax
	sarl	$16, %eax
	addl	%eax, %ecx
	movl	%ecx, %edi
	sarl	$16, %edi
	addl	%ecx, %edi
	notl	%edi
	callq	_htons
	movl	%eax, (%rbx)
	addq	$8, %rsp
	popq	%rbx
	popq	%rbp
	retq
	.cfi_endproc
                                        ## -- End function
	.no_dead_strip	_update_cksum
.subsections_via_symbols

	.section	__TEXT,__text,regular,pure_instructions
	.build_version macos, 13, 0	sdk_version 13, 3
	.p2align	2                               ; -- Begin function update_cksum
_update_cksum:                          ; @update_cksum
	.cfi_startproc
; %bb.0:
	stp	x20, x19, [sp, #-32]!           ; 16-byte Folded Spill
	.cfi_def_cfa_offset 32
	stp	x29, x30, [sp, #16]             ; 16-byte Folded Spill
	add	x29, sp, #16
	.cfi_def_cfa w29, 16
	.cfi_offset w30, -8
	.cfi_offset w29, -16
	.cfi_offset w19, -24
	.cfi_offset w20, -32
	mov	x19, x0
	str	wzr, [x0]
	mov	w0, #0
	bl	_ntohs
	asr	w8, w0, #16
	add	w8, w8, w0, uxth
	add	w8, w8, w8, asr #16
	mvn	w0, w8
	bl	_htons
	str	w0, [x19]
	ldp	x29, x30, [sp, #16]             ; 16-byte Folded Reload
	ldp	x20, x19, [sp], #32             ; 16-byte Folded Reload
	ret
	.cfi_endproc
                                        ; -- End function
	.no_dead_strip	_update_cksum
.subsections_via_symbols
