section .bss
buff: resb 8192
buffsize: equ $-buff
section .text
  global _start
_start:
;open file
mov eax, 5
pop ebx
pop ebx
pop ebx
mov ecx, 0
int 80h
;errors?
test eax, eax
jns file_function
mov ebx, eax
mov eax, 1
int 80h
;read file
file_function:
mov ebx, eax
mov eax, 3
mov ecx, buff
mov edx, buffsize
int 80h
;errors?
test eax, eax
;jz nextfile
js errors
;print
mov edx, eax
mov eax, 4
mov ebx, 1
int 80h
;exit
mov eax, 1
mov ebx, 0
int 80h
errors:
mov ebx, eax
mov eax, 1
int 80h