separate into files

hello.s

@@ -1,191 +0,0 @@
-global _start
-
-; constants
-SYS_READ        equ 0
-SYS_WRITE       equ 1
-SYS_POLL        equ 7
-SYS_SENDFILE    equ 40
-SYS_SOCKET      equ 41
-SYS_ACCEPT      equ 43
-SYS_BIND        equ 49
-SYS_LISTEN      equ 50
-SYS_EXIT        equ 60
-SYS_FCNTL       equ 72
-SYS_UNLINK      equ 87
-STDOUT          equ 1
-AF_UNIX         equ 1
-SOCK_STREAM     equ 1
-F_GETFL         equ 3
-F_SETFL         equ 4
-O_NONBLOCK      equ 2048
-POLLIN          equ 1
-POLLOUT         equ 4
-
-pollfd_size equ 4 + 2 + 2  ; $ man 2 poll
-pollfds_capacity equ 100
-
-SECTION .data
-hello           db "Hello world!", 0x0a
-hello_len       equ $ - hello
-server_path     db "server.sock", 0x00
-server_path_len equ $ - hello
-sockaddr_size   equ 2 + 108  ; $ man 7 unix
-
-SECTION .bss
-sockaddr    resb sockaddr_size
-pollfds     resb pollfd_size * pollfds_capacity
-
-SECTION .text
-
-_start:
-    mov rax, SYS_WRITE
-    mov rdi, STDOUT
-    mov rsi, hello
-    mov rdx, hello_len
-    syscall
-
-    call make_server
-    mov rbx, 0  ; pollfd array length
-    mov ebp, eax  ; server fd
-
-    mov rax, rbx
-    mov edi, ebp
-    mov si, POLLIN
-    call pollfds__append
-    mov rbx, rax
-
-poll:
-    mov rax, SYS_POLL
-    mov rdi, pollfds
-    mov rsi, rbx
-    mov rdx, 5000
-    syscall
-    cmp rax, 0
-    jeq poll
-    jlt exit
-
-exit:
-    mov rax, SYS_EXIT
-    mov rdi, 0
-    syscall
-
-accept:
-    mov rdi, rax
-    mov rax, SYS_ACCEPT
-    mov rsi, 0
-    mov rdx, 0
-    syscall
-    ret
-
-; rax - array length
-; edi - fd
-; si - events
-; Returns new array length in rax
-pollfds__append:
-    mov [pollfds + rax], edi
-    mov [pollfds + rax + 4], si
-    add rax, 1
-    ret
-
-; Returns new array length in rax
-; rax - array length
-; edi - fd
-pollfds__remove:
-    mov r10d, edi
-    mov rdi, 0
-
-; Variables:
-; rax - array length
-; rdi - array index
-; r10d - fd
-; r11d - pollfds[rdi].fd
-pollfds__remove__loop:
-    cmp rdi, rax
-    jge return  ; fd was not found
-    mov r11d, [pollfds + rdi * pollfd_size]
-    add rdi, 1
-    cmp r11d, r10d
-    jne pollfds__remove__loop
-    sub rdi, 1
-
-; Returns new array length in rax
-; rax - array length
-; rdi - array index to remove
-pollfds__remove_index:
-    cmp rax, 1
-    jle pollfds__clear
-    mov r10d, [pollfds + (rax - 1) * pollfd_size]
-    mov [pollfds + rdi * pollfd_size], r10d
-    sub rax, 1
-    ret
-
-; Returns new array length in rax
-; rax - array length
-pollfds__clear:
-    mov rax, 0
-    ret
-
-; Returns (in rax) the server's file descriptor
-make_server:
-    mov rax, SYS_UNLINK
-    mov rdi, server_path
-    syscall
-
-    mov rax, SYS_SOCKET
-    mov rdi, AF_UNIX
-    mov rsi, SOCK_STREAM
-    mov rdx, 0
-    syscall
-    push rax
-
-    call nonblocking
-    call make_sockaddr
-    pop r10
-
-    mov rax, SYS_BIND
-    mov rdi, r10
-    mov rsi, sockaddr
-    mov rdx, sockaddr_size
-    syscall
-
-    mov rax, SYS_LISTEN
-    mov rdi, r10
-    mov rsi, 100
-    syscall
-
-    mov rax, r10
-    ret
-
-nonblocking:
-    mov r10, rax
-
-    mov rax, SYS_FCNTL
-    mov rdi, r10
-    mov rsi, F_GETFL
-    syscall
-
-    mov r11, rax
-    xor r11, O_NONBLOCK
-
-    mov rax, SYS_FCNTL
-    mov rdi, r10
-    mov rsi, F_SETFL
-    mov rdx, r11
-    syscall
-
-    ret
-
-make_sockaddr:
-    mov word [sockaddr], AF_UNIX
-    mov rax, 0
-
-make_sockaddr__copy_server_path:
-    cmp rax, server_path_len
-    jge return
-    mov r10, [server_path + rax]
-    mov [sockaddr + rax + 2], r10
-    add rax, 8
-    jmp make_sockaddr__copy_server_path
-
-return:
-    ret