汇编AND操作符
<pre><code class="lang-bash">section .text
global _start ;must be declared for using gcc
_start: ;tell linker entry point
mov ax, 8h ;getting 8 in the ax
and ax, 1 ;and ax with 1
jz evnn
mov eax, 4 ;system call number (sys_write)
mov ebx, 1 ;file descriptor (stdout)
mov ecx, odd_msg ;message to write
mov edx, len2 ;length of message
int 0x80 ;call kernel
jmp outprog
evnn:
mov ah, 09h
mov eax, 4 ;system call number (sys_write)
mov ebx, 1 ;file descriptor (stdout)
mov ecx, even_msg ;message to write
mov edx, len1 ;length of message
int 0x80 ;call kernel
outprog:
mov eax,1 ;system call number (sys_exit)
int 0x80 ;call kernel
section .data
even_msg db 'Even Number!' ;message showing even number
len1 equ $ - even_msg
odd_msg db 'Odd Number!' ;message showing odd number
len2 equ $ - odd_msg
</code></pre>
