On Mon, 21 Jun 1999, Luke (boo) Farrar wrote:
> Can some clever chap (or chapess) tell me what is wrong with this: It
> is supposed to print the letter A to the screen..... But it doesn't.
Run it through strace and you'll see that the write is returning -EFAULT.
> export _main
> _main:
> mov eax,#4
__NR_write
> mov ebx,#1
STDOUT_FILENO (or whatever)
> mov ecx,#13
Where does this number come from? The second argument of write(2) is
supposed to be a pointer.
> mov edx,#1
Write one byte.
> int $80
>
> mov eax,#1
> int $80
> .data
> .bss
I assume that you're trying to run this under i386/Linux, in which case
you mean "write the character A to standard output".
.data
ac: db "A"
.text
export _main
_main:
mov eax, #4
mov ebx, #1
mov ecx, ac
mov edx, #1
int $80
mov eax, #1
int $80
.bss
Which assembler as you using, BTW?
Matthew.
