recursive.s

   1 .section .data
   2 .section .text
   3 .globl _start
   4 .globl factorial
   5
   6 _start:
   7 pushl $4
   8 call factorial
   9 addl $4, %esp
  10 movl %eax, %ebx
  11 movl $1, %eax
  12 int $0x80
  13
  14 .type factorial, @function
  15 factorial:
  16 pushl %ebp
  17 movl %esp, %ebp
  18 movl 8(%ebp), %eax
  19 cmpl $1 %eax
  20 je end_factorial
  21 decl %eax
  22 pushl %eax
  23 call factorial
  24 movl 8(%ebp), %ebx
  25 imull %ebx, %eax
  26 end_factorial:
  27 movl %ebp, %esp
  28 popl %ebp
  29 ret