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;Testname=aout; Arguments=-faout -olnxhello.o -Ox; Files=stdout stderr lnxhello.o
;Testname=aoutb; Arguments=-faoutb -olnxhello.o -Ox; Files=stdout stderr lnxhello.o
;Testname=as86; Arguments=-fas86 -olnxhello.o -Ox; Files=stdout stderr lnxhello.o
;Testname=elf32; Arguments=-felf32 -olnxhello.o -Ox; Files=stdout stderr lnxhello.o
;
; Assembly "Hello, World!" for Linux
;
; Properly defined in <sys/syscall.h>
%define SYS_exit 1
%define SYS_write 4
section .text
global _start
_start:
; gdb doesn't like to stop at the entry point address, so
; we put a nop here for pure convenience
nop
write_hello:
mov edx, hello_len
mov ecx, hello
.loop:
mov eax, SYS_write
mov ebx, 1 ; stdout
int 80h
cmp eax, -4096
ja error
add ecx, eax
sub edx, eax
jnz .loop
ok:
mov eax, SYS_exit
xor ebx, ebx
int 80h
hlt
error:
mov eax, SYS_exit
mov ebx, 1 ; Error
int 80h
hlt
section .rodata
hello: db "Hello, World!", 10
hello_len equ $-hello
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