separate into files

main.s

@@ -25,10 +25,8 @@ 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
+server_path_len equ $ - server_path
 sockaddr_size   equ 2 + 108  ; $ man 7 unix
 
 SECTION .bss
@@ -37,13 +35,9 @@ pollfds     resb pollfd_size * pollfds_capacity
 
 SECTION .text
 
-_start:
-    mov rax, SYS_WRITE
-    mov rdi, STDOUT
-    mov rsi, hello
-    mov rdx, hello_len
-    syscall
+%include "server.s"
 
+_start:
     call make_server
     mov rbx, 0  ; pollfd array length
     mov ebp, eax  ; server fd
@@ -61,8 +55,8 @@ poll:
     mov rdx, 5000
     syscall
     cmp rax, 0
-    jeq poll
-    jlt exit
+    je poll
+    jl exit
 
 exit:
     mov rax, SYS_EXIT
@@ -125,67 +119,5 @@ 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

makefile

@@ -1,3 +1,3 @@
 main:
-	nasm -g -f elf64 -o hello.o hello.s
-	ld -o hello hello.o
+	nasm -g -f elf64 -o main.o main.s
+	ld -o main main.o

server.s

@@ -0,0 +1,61 @@
+; 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