# sub-.s
.section .data
data:
.int 40
.section .text
//.globl _start
//_start:
nop
movl $0, %eax
movl $0, %ebx
movl $0, %ecx
movb $20, %al
subb $10, %al
movsx %al, %eax
movw $100, %cx
subw %cx, %bx
movsx %bx, %ebx
movl $100, %edx
subl %eax, %edx
subl data, %eax
subl %eax, data
movl $1, %eax
movl $0, %ebx
int $0x21

