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  1. section .data
  2. msg db 10,"Menu"
  3. db 10,"1.Succesive addition"
  4. db 10,'2.Add and Shift Addition'
  5. db 10,"3.Exit"
  6. db 10,"Enter your choice: "
  7. len equ $-msg
  8. msg1 db 10,"Enter 1st two digit number:"
  9. len1 equ $-msg1
  10. msg2 db 10,"Enter 2nd two digit number:"
  11. len2 equ $-msg2
  12. msg3 db 10,"Result:"
  13. len3 equ $-msg
  14. section .bss
  15. numascii resb 05
  16. num1 resb 05
  17. num2 resb 05
  18. dispbuff resb 05
  19. %macro print 2
  20. mov rax,1
  21. mov rdi,1
  22. mov rsi,%1
  23. mov rdx,%2
  24. syscall
  25. %endmacro
  26. %macro accept 2
  27. mov rax,0
  28. mov rdi,0
  29. mov rsi,%1
  30. mov rdx,%2
  31. syscall
  32. %endmacro
  33. section .text
  34. global _start
  35. _start:
  36. print msg,len
  37. accept numascii,2
  38. case1:
  39. cmp byte[numascii],'1'
  40. jne case2
  41. call proc
  42. jmp _start
  43. case2:
  44. cmp byte[numascii],'2'
  45. jne exit
  46. call multi
  47. jmp _start
  48. exit:
  49. mov rax,60
  50. syscall
  51. ;successive addition method
  52. proc:
  53. print msg1,len1 ;enter 1st number
  54. accept numascii,3
  55. call packnum
  56. mov [num1],bl ;num1= 02
  57. print msg2,len2 ;enter 2nd number
  58. accept numascii,3
  59. call packnum ; bl = 03
  60. mov ax,0 ; ax=0
  61. up:
  62. add ax,[num1] ; ax= ax+[num1] = 04 + 02 = 06
  63. dec bl ; bl=0
  64. jnz up
  65. mov bx,ax ; bx=06
  66. call dispnum
  67. ret
  68. ; Add & Shift method
  69. multi:
  70. print msg1,len1
  71. accept numascii,3
  72. call packnum
  73. mov [num1],bl ; num1=02
  74. print msg2,len2
  75. accept numascii,3
  76. call packnum
  77. mov [num2],bl ; num2=03
  78. mov ax,00h
  79. mov dx,00h
  80. mov al,[num1] ; al= 02 0000 0010
  81. mov bl,[num2] ; bl = 03 0000 0011
  82. mov cx,00h ;result
  83. mov dl,08h ;counter
  84. l2:
  85. shr bl,01h ; bl= 0000 0000 , shr = 0000 0000 0
  86. jnc l1
  87. add cx,ax ; cx=cx+ax= 02+04 = 06
  88. l1: shl al,01 ;al= 0000 1000, shl= 0001 0000
  89. dec dl ; dl=05
  90. jnz l2
  91. mov rbx,rcx
  92. call dispnum
  93. ret
  94. dispnum:
  95. mov rcx,04
  96. mov edi,dispbuff
  97. up2:
  98. rol bx,04
  99. mov al,bl
  100. and al,0fh
  101. cmp al,09h
  102. jbe skip
  103. add al,07h
  104. skip:
  105. add al,30h
  106. mov [edi],al
  107. inc edi
  108. loop up2
  109. print dispbuff,4
  110. ret
  111. packnum:
  112. mov bx,0
  113. mov rcx,02
  114. mov esi,numascii
  115. up1:rol bl,04
  116. mov al,[esi]
  117. cmp al,39h
  118. jbe skip1
  119. sub al,07h
  120. skip1:
  121. sub al,30h
  122. add bl,al
  123. inc esi
  124. loop up1
  125. ret
Success #stdin #stdout 0s 5320KB
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Menu
1.Succesive addition
2.Add and Shift Addition
3.Exit
Enter your choice:
https://ideone.com/ba2dGt
language:
Assembler 64bit (nasm 2.14)
created:
328 days ago
visibility:
public

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