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Scorch
Asked: 2018-08-13 02:43:20 +0800 CST

How can I compile & run assembly in Ubuntu 18.04?

  • 772

So recently I've wanted to learn assembly, so I learnt a bit. I put this into nano and saved it as playground.asm. Now I'm wondering, how do I compile and run it? I've already searched everywhere and still cant find it. I'm really curious and there's no point learning a language if you can't even use it.

compiling 18.04 assembler

2 Answers

  1. Best Answer

    In all currently supported versions of Ubuntu open the terminal and type:

    sudo apt install as31 nasm

    as31: Intel 8031/8051 assembler
    This is a fast, simple, easy to use Intel 8031/8051 assembler.

    nasm: General-purpose x86 assembler
    Netwide Assembler. NASM will currently output flat-form binary files, a.out, COFF and ELF Unix object files, and Microsoft 16-bit DOS and Win32 object files.

    This is the code for an assembly language program that prints Hello world.

    section     .text
global      _start 
_start: 
    mov     edx,len   
    mov     ecx,msg   
    mov     ebx,1   
    mov     eax,4   
    int     0x80   
    mov     eax,1  
    int     0x80   
section     .data
msg     db  'Hello world',0xa  
len     equ $ - msg

    If you are using NASM in Ubuntu 18.04, the commands to compile and run an .asm file named hello.asm are:

    nasm -f elf64 hello.asm # assemble the program  
ld -s -o hello hello.o # link the object file nasm produced into an executable file  
./hello # hello is an executable file
    • 33

  2. Ubuntu comes with as (the portable GNU assembler) 

    as file.s -o file.out
ld file.out -e main -o file
./file

    -o: Tells where to send the output
    -e: Tells ld the start symbol

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