Hello world in Rust ASM generated

hello.rs

pub fn main() {
    println!("Hello world!");
}

hello.s

	.text
	.file	"rs.cgu-0.rs"
	.section	.text._ZN4core3fmt9Arguments6new_v117h36e209fa9374401fE,"ax",@progbits
	.p2align	4, 0x90
	.type	_ZN4core3fmt9Arguments6new_v117h36e209fa9374401fE,@function
_ZN4core3fmt9Arguments6new_v117h36e209fa9374401fE:
	.cfi_startproc
	subq	$16, %rsp
.Lcfi0:
	.cfi_def_cfa_offset 24
	movq	%rdi, %rax
	movq	$0, (%rsp)
	movq	%rsi, (%rdi)
	movq	%rdx, 8(%rdi)
	movq	(%rsp), %rdx
	movq	%rdx, 16(%rdi)
	movq	8(%rsp), %rdx
	movq	%rdx, 24(%rdi)
	movq	%rcx, 32(%rdi)
	movq	%r8, 40(%rdi)
	addq	$16, %rsp
	retq
.Lfunc_end0:
	.size	_ZN4core3fmt9Arguments6new_v117h36e209fa9374401fE, .Lfunc_end0-_ZN4core3fmt9Arguments6new_v117h36e209fa9374401fE
	.cfi_endproc

	.section	.text._ZN2rs4main17h9e8081a6883057b9E,"ax",@progbits
	.p2align	4, 0x90
	.type	_ZN2rs4main17h9e8081a6883057b9E,@function
_ZN2rs4main17h9e8081a6883057b9E:
	.cfi_startproc
	subq	$56, %rsp
.Lcfi1:
	.cfi_def_cfa_offset 64
	leaq	8(%rsp), %rdi
	leaq	ref.0(%rip), %rcx
	xorl	%eax, %eax
	movl	%eax, %r8d
	movq	_ZN2rs4main15__STATIC_FMTSTR17hf8343ca7f8c12d32E(%rip), %rsi
	movq	_ZN2rs4main15__STATIC_FMTSTR17hf8343ca7f8c12d32E+8(%rip), %rdx
	callq	_ZN4core3fmt9Arguments6new_v117h36e209fa9374401fE
	leaq	8(%rsp), %rdi
	callq	_ZN3std2io5stdio6_print17h6764fcec13be5725E@PLT
	addq	$56, %rsp
	retq
.Lfunc_end1:
	.size	_ZN2rs4main17h9e8081a6883057b9E, .Lfunc_end1-_ZN2rs4main17h9e8081a6883057b9E
	.cfi_endproc

	.section	.text.main,"ax",@progbits
	.globl	main
	.p2align	4, 0x90
	.type	main,@function
main:
	.cfi_startproc
	subq	$24, %rsp
.Lcfi2:
	.cfi_def_cfa_offset 32
	leaq	_ZN2rs4main17h9e8081a6883057b9E(%rip), %rax
	movq	%rdi, 16(%rsp)
	movq	%rax, %rdi
	movq	16(%rsp), %rax
	movq	%rsi, 8(%rsp)
	movq	%rax, %rsi
	movq	8(%rsp), %rdx
	callq	_ZN3std2rt10lang_start17hc7d7ddefc6ff9283E@PLT
	addq	$24, %rsp
	retq
.Lfunc_end2:
	.size	main, .Lfunc_end2-main
	.cfi_endproc

	.type	_ZN2rs4main15__STATIC_FMTSTR17hf8343ca7f8c12d32E,@object
	.section	.data.rel.ro._ZN2rs4main15__STATIC_FMTSTR17hf8343ca7f8c12d32E,"aw",@progbits
	.p2align	3
_ZN2rs4main15__STATIC_FMTSTR17hf8343ca7f8c12d32E:
	.quad	ref.2
	.quad	1
	.size	_ZN2rs4main15__STATIC_FMTSTR17hf8343ca7f8c12d32E, 16

	.type	ref.0,@object
	.section	.rodata.ref.0,"a",@progbits
	.p2align	3
ref.0:
	.size	ref.0, 0

	.type	str.1,@object
	.section	.rodata.str.1,"a",@progbits
str.1:
	.ascii	"Hello world!\n"
	.size	str.1, 13

	.type	ref.2,@object
	.section	.data.rel.ro.ref.2,"aw",@progbits
	.p2align	3
ref.2:
	.quad	str.1
	.quad	13
	.size	ref.2, 16


	.section	".note.GNU-stack","",@progbits