32bit x86 Linux hello world exploration

asm.s

	.text
	.intel_syntax noprefix
	.file	"test"
	.globl	_start
	.type	_start,@function
_start:
	push	ebp
	push	ebx
	push	edi
	push	esi
	push	eax
	xor	edi, edi
	push	4
	pop	esi
	xor	ebx, ebx
	xor	eax, eax
	inc	ebx
.LBB0_1:
	cmp	eax, 11
	ja	.LBB0_6
	lea	ecx, [eax + __unnamed_1]
	push	12
	pop	edx
	sub	edx, eax
	mov	dword ptr [esp], eax
.LBB0_3:
	mov	eax, esi
	#APP
	int	128
	#NO_APP
	mov	ebp, eax
	neg	eax
	cmp	ebp, -4095
	cmovb	eax, edi
	cmp	ax, 4
	je	.LBB0_3
	movzx	eax, ax
	test	eax, eax
	mov	eax, dword ptr [esp]
	jne	.LBB0_6
	add	eax, ebp
	jmp	.LBB0_1
.LBB0_6:
	add	esp, 4
	pop	esi
	pop	edi
	pop	ebx
	pop	ebp
	ret
.Lfunc_end0:
	.size	_start, .Lfunc_end0-_start

	.type	__unnamed_1,@object
	.section	.rodata.str1.1,"aMS",@progbits,1
__unnamed_1:
	.asciz	"Hello world!"
	.size	__unnamed_1, 13

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

cmd.txt

zig build-exe hello.zig -O ReleaseSmall -target i386-linux-musl -fstrip -fstage1 -femit-asm

elf.hex

45 7f 46 4c 01 01 00 01 00 00 00 00 00 00 00 00
00 02 00 03 00 01 00 00 10 c4 00 40 00 34 00 00
01 48 00 00 00 00 00 00 00 34 00 20 00 04 00 28
00 05 00 04 00 06 00 00 00 34 00 00 00 34 00 40
00 34 00 40 00 80 00 00 00 80 00 00 00 04 00 00
00 04 00 00 00 01 00 00 00 00 00 00 00 00 00 40
00 00 00 40 00 c1 00 00 00 c1 00 00 00 04 00 00
10 00 00 00 00 01 00 00 00 c4 00 00 10 c4 00 40
10 c4 00 40 00 4f 00 00 00 4f 00 00 00 05 00 00
10 00 00 00 e5 51 64 74 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 01 00 00 06 00 00
00 00 00 00 65 48 6c 6c 20 6f 6f 77 6c 72 21 64
00 00 00 00 53 55 56 57 31 50 6a ff 5e 04 db 31
c0 31 83 43 0b f8 33 77 88 8d 00 b4 00 40 0c 6a
29 5a 89 c2 24 04 f0 89 80 cd c5 89 d8 f7 fd 81
f0 01 ff ff 42 0f 66 c7 f8 83 74 04 0f e9 c0 b7
c0 85 04 8b 75 24 01 04 eb e8 83 c8 04 c4 5f 5e
5d 5b 4c c3 6e 69 65 6b 3a 72 4c 20 44 4c 31 20
2e 35 2e 30 00 34 2e 00 6f 72 61 64 61 74 2e 00
65 74 74 78 2e 00 6f 63 6d 6d 6e 65 00 74 73 2e
73 68 72 74 61 74 00 62 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 01 00 00 00 01 00 00 00 32 00 00 00 b4 00 40
00 b4 00 00 00 0d 00 00 00 00 00 00 00 00 00 00
00 01 00 00 00 01 00 00 00 09 00 00 00 01 00 00
00 06 00 00 10 c4 00 40 00 c4 00 00 00 4f 00 00
00 00 00 00 00 00 00 00 00 04 00 00 00 00 00 00
00 0f 00 00 00 01 00 00 00 30 00 00 00 00 00 00
01 13 00 00 00 13 00 00 00 00 00 00 00 00 00 00
00 01 00 00 00 01 00 00 00 18 00 00 00 03 00 00
00 00 00 00 00 00 00 00 01 26 00 00 00 22 00 00
00 00 00 00 00 00 00 00 00 01 00 00 00 00 00 00

hello.zig

const std = @import("std");

pub export fn _start() void {
    std.io.getStdOut().writeAll("Hello world!") catch unreachable;
}