fork(1) download
copy 
  1. global _start
  2.  
  3. section .data
  4. 	outbuffer	db	'0000000000', 10,10
  5.  
  6. section .text
  7.  
  8. _start:
  9.  
  10. 	push 13				; PUSH WANTED FIBBONACCI MEMBER INDEX HERE
  11. 						; REMEMBER, IT MUST BE (N - 1)
  12. 						; SO IF YOU WANT 14th MEMBER (LIKE HERE), YOU PUSH 13
  13. 	call fibo
  14. 	call printint
  15.  
  16. 	jmp exit
  17.  
  18. exit:
  19. 	mov		eax, 01h		; exit()
  20. 	xor		ebx, ebx		; errno
  21. 	int		80h
  22.  
  23. ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  24.  
  25. fibo:
  26. 	push    ebp         ; Retrieve parameter and put it
  27. 	push    ebx         ; Save previous parameter
  28. 	mov     ebp,esp     ; into EBX register
  29. 	add     ebp,12      ;
  30. 	mov     ebx,[ebp]   ; EBX = Param
  31.  
  32. 	cmp     ebx,1       ; Check for base case
  33. 	jle     base        ; It is base if (n <= 1)
  34.  
  35. 	lea  ecx,[ebx-1]
  36. 	push ecx            ; push N-1
  37. 	call fibo   		; Calculate fibo for (EBX - 1)
  38. 	pop  ecx            ; remove N-1 off the stack
  39.  
  40. 	push eax            ; save the result of fibo(N-1)
  41. 	lea ecx,[ebx-2]
  42. 	push ecx            ; push N-2
  43. 	call fibo   		; Calculate fibo for (EBX - 2)
  44. 	pop ecx             ; remove N-2 off the stack
  45. 	pop ecx             ; ecx = fibo(N-1)
  46. 	add eax,ecx         ; eax = fibo(N-2) + fibo(N-1)
  47.  
  48. 	jmp end
  49.  
  50. 	base:               ; Base case
  51. 		mov eax,1           ; The result would be 1
  52.  
  53. 	end:
  54. 		pop     ebx         ; Restore previous parameter
  55. 		pop     ebp         ; Release EBP
  56. 		ret
  57.  
  58.  
  59. ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
  60.  
  61. printint:
  62. 	pushad
  63. 	mov ecx, 10d
  64. 	mov	edi, 10d
  65. 	mov ebx, outbuffer+9
  66. 	innerprintloop:
  67. 		mov edx, 0h
  68. 		div edi
  69. 		add edx, '0' ; '0' - 0x48h
  70. 		mov [ebx], dl
  71. 		dec ebx
  72. 		loop innerprintloop
  73. 	mov ecx, outbuffer
  74. 	mov edx, 11
  75. 	call write
  76. 	popad
  77. 	ret
  78.  
  79. read:
  80. 	;move where to read to ecx
  81. 	;move length to edx 
  82. 	mov		eax, 03h		; 3 is recognized by the system as meaning "read"
  83. 	mov		ebx, 00h		; read from standard input
  84. 	int		80h				; call the kernel
  85. 	ret
  86.  
  87. write:
  88. 	;move what to write to ecx
  89. 	;move length to edx
  90. 	mov		eax, 04h		; the system interprets 4 as "write"
  91. 	mov		ebx, 01h		; standard output (print to terminal)
  92. 	int		80h				; call the kernel
  93. 	ret
Success #stdin #stdout 0s 156KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
0000000377
https://ideone.com/pZH3jv
language:
Assembler 32bit (nasm 2.14)
created:
7 years ago
visibility:
secret

Share or Embed source code

Discover > Sphere Engine API

The brand new service which powers Ideone!

Discover > IDE Widget

Widget for compiling and running the source code in a web browser!