汇编中多进程－－初始例子

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.section .data
msg:   .ascii "start fork/n"
   msg_len = . - msg
father_msg:   .ascii "this is father/n"
   father_msg_len = . - father_msg
child_msg:   .ascii "this is child/n"
   child_msg_len = . - child_msg
   .equ write_number, 4
   .equ stdout_number, 1
   .equ fork_number, 2
   .equ exit_number, 1
.section .text
   .globl _start
_start:
   #print msg
   movl $write_number,%eax
   movl $stdout_number, %ebx
   movl $msg, %ecx
   movl $msg_len, %edx
   int $0x80

   #invoke fork
   movl $fork_number, %eax
   int $0x80

   #return value in eax
   movl %eax, %ecx
   jecxz child
father:
   #print father_msg
   movl $write_number, %eax
   movl $stdout_number, %ebx
   movl $father_msg, %ecx
   movl $father_msg_len, %edx
   int $0x80

   jmp exit
child:
   #print child_msg
   movl $write_number, %eax
   movl $stdout_number, %ebx
   movl $child_msg, %ecx
   movl $child_msg_len, %edx
   int $0x80

   jmp exit
exit:
   movl $exit_number,%eax
   movl $0, %ebx
   int $0x80