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  1. global _start
  2.  
  3. ;
  4. ; CONSTANTS
  5. ;
  6. SYS_WRITE   equ 1
  7. SYS_EXIT    equ 60
  8. STDOUT      equ 1
  9.  
  10. ;
  11. ; Initialised data goes here
  12. ;
  13. SECTION .data
  14. hello           db  "Hello World!", 10      ; char *
  15. hello_len       equ $-hello                 ; size_t
  16.  
  17. ;
  18. ; Code goes here
  19. ;
  20. SECTION .text
  21.  
  22. _start:
  23.     ; syscall(SYS_WRITE, STDOUT, hello, hello_len);
  24.     mov     rax, SYS_WRITE
  25.     mov     rdi, STDOUT
  26.     mov     rsi, hello
  27.     mov     rdx, hello_len
  28.     syscall
  29.     push    rax
  30.  
  31.     ; syscall(SYS_EXIT, <sys_write return value> - hello_len);
  32.     mov     rax, SYS_EXIT
  33.     pop     rdi
  34.     sub     rdi, hello_len
  35.     syscall
Success #stdin #stdout 0s 5288KB
comments (?)
stdin
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Standard input is empty
stdout
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Hello World!
https://ideone.com/yyqeup
language:
Assembler 64bit (nasm 2.14)
created:
8 hours ago
visibility:
public

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