recursive hanoi function with nasm

[zahit]

hi all, i've been trying to develop a recursive hanoi function in intelx86 assembly language. i use nasm to run it. i use this c function as sample

void hanoi_rec(int n_disc, int head, int middle, int tail, int silent){
     if (n_disc == 1){
	  if(silent != 1)
	       printf("%d --> %d\n", head, tail);
     }
     else{
	  hanoi_rec(n_disc -1, head, tail, middle, silent);
	  if(silent != 1)
	       printf("%d --> %d\n", head, tail);
	  hanoi_rec(n_disc -1, middle, head, tail, silent);
     }
}

and the assembly code is

extern printf

SECTION .data
han1: db "%d --> %d", 10, 0

global asm_hanoi_rec
asm_hanoi_rec:

push ebp
mov ebp, esp
mov eax, [ebp+8]
mov ebx, [ebp+24]
cmp eax, 1
jne L5
cmp ebx, 1
je L7
push dword[ebp+12]
push dword[ebp+20]
push han1
call printf
add esp, 12
jmp L7
L5:
     dec eax
     push eax
     push dword[ebp+12]
     push dword[ebp+20]
     push dword[ebp+16]
     push ebx
     call asm_hanoi_rec
     cmp ebx, 1
     je L6
     push dword[ebp+12]
     push dword[ebp+20]
     push han1
     call printf
     add esp, 12
L6:
     push eax
     push dword[ebp+16]
     push dword[ebp+12]
     push dword[ebp+20]
     push ebx
     call asm_hanoi_rec
L7:
     pop ebp
     ret 20

but it runs in infinite loop printing
1 --> 2
3 --> 1
2 --> 3
1 --> 2
3 --> 1
2 --> 3
...
and so on

i couldn't figure out why. any help is much appreciated. thanks..