What style assembly is this (intel, att...etc?) and how can I produce it?

I'm trying to produce assembly code like this (so that it works with nasm)

;hello.asm
[SECTION .text]

global _start


_start:

    jmp short ender

    starter:

    xor eax, eax    ;clean up the registers
    xor ebx, ebx
    xor edx, edx
    xor ecx, ecx

    mov al, 4       ;syscall write
    mov bl, 1       ;stdout is 1
    pop ecx         ;get the address of the string from the stack
    mov dl, 5       ;length of the string
    int 0x80

    xor eax, eax
    mov al, 1       ;exit the shellcode
    xor ebx,ebx
    int 0x80

    ender:
    call starter    ;put the address of the string on the stack
    db 'hello'

First off, what assembly style is this and second, how can I produce it from a C file using a command similar to gcc -S code.c -o code.S -masm=intel

This is Intel style.

What's wrong with the commandline you wrote in the question?