Write X86/64 ALP to perform non-overlapped and overlapped block transfer (with and without string specific instructions). Block containing data can be defined in the data segment without string specific instructions). Block containing data can be defined in the data segment.(i.e.Non-overlapped Block Transfer)

                                                    Savitribai Phule Pune University
                            Second Year of Computer Engineering (2015 Course)
                                                     210257: Microprocessor Lab
                                                                Assignment No.2A

Problem Statement: Write X86/64 ALP to perform non-overlapped and overlapped block transfer (with and without string specific instructions). Block containing data can be defined in the data segment. 

;***************************************************************
;Assignmnet No. 2A
;Write X86/64 ALP to perform non-overlapped and overlapped block ;transfer (with and without string specific instructions). Block ;containing data can be defined in the data segment.
;..........................................................
; Non-overlapped Block Transfer
;***************************************************************
section .data
 menumsg db 10,'##Menu for Non-overlapped Block Transfer##',10
       db 10,'1.Block Transfer without using string instructions'
       db 10,'2.Block Transfer with using string instructions'
       db 10,'3.Exit',10
 menumsg_len equ $-menumsg
  
 blk_bfrmsg db 10,'Block contents before transfer'
 blk_bfrmsg_len equ $-blk_bfrmsg

 blk_afrmsg db 10,'Block contents after transfer'
 blk_afrmsg_len equ $-blk_afrmsg

 srcmsg db 10,'Source block contents::'
 srcmsg_len equ $-srcmsg

 dstmsg db 10,'Destination block contents::'
 dstmsg_len equ $-dstmsg

 srcblk db 01h,02h,03h,04h,05h
 dstblk db 00,00,00,00,00
  
 spacechar db 20h
 spchlength equ $-spacechar
  
;****************.bss Section***************************
section .bss
    optionbuff resb 02
    dispbuff resb 02

%macro display 2
    mov rax,01
    mov rdi,01
    mov rsi,%1
    mov rdx,%2
    syscall
%endmacro

%macro accept 2
    mov rax,00
    mov rdi,00
    mov rsi,%1
    mov rdx,%2
    syscall
%endmacro

;*******************.text Section**************************
section .text
    global _start
_start:
  
    display blk_bfrmsg,blk_bfrmsg_len
  
    call dispsrc_blk_proc

    call dispdest_blk_proc

   menu: display menumsg,menumsg_len
  
         accept optionbuff,02

         cmp byte [optionbuff],31h
  
         je wos
  
         cmp byte [optionbuff],32h          

         je ws

  
exit:    mov rax,60        ;Exit
         mov rbx,00
         syscall
  
;**************Display Source Block Procedure****************
  
dispsrc_blk_proc:
        display srcmsg,srcmsg_len
        mov rsi,srcblk
        mov rcx,05h
      
    up1:push rcx
        mov bl,[rsi]
        push rsi
      
        call disp8_proc

        display spacechar,spchlength
        
pop rsi
        inc rsi
        pop rcx
        loop up1
        ret

;**************Display Destination Block Procedure*************

dispdest_blk_proc:
        display dstmsg,dstmsg_len
        mov rdi,dstblk
        mov rcx,05
      
    up2:push rcx
        mov bl,[rdi]
        push rdi
      
        call disp8_proc

        display spacechar,spchlength
                                                                         pop rdi
        inc rdi
        pop rcx
        loop up2
        ret

;**************Without String Procedure************
wos:
    mov rsi,srcblk
    mov rdi,dstblk
    mov rcx,05                                                                                                                    
         again: mov bl,[rsi]
                mov [rdi],bl
                inc rsi
                inc rdi
                loop again

         display blk_afrmsg,blk_afrmsg_len
         call dispsrc_blk_proc
         call dispdest_blk_proc
         jmp menu
                                                              ;************Using String Procedure****************  

ws:
    mov rsi,srcblk
    mov rdi,dstblk
    mov rcx,05
                                                                
     cld                                                              rep movsb

    display blk_afrmsg,blk_afrmsg_len
    call dispsrc_blk_proc
    call dispdest_blk_proc
    jmp menu

;************Display Procedure********************
 
disp8_proc:
    mov rsi,dispbuff
    mov rcx,02

dup1:
    rol bl,4
    mov dl,bl
    and dl,0Fh
    cmp dl,09H
    jbe dskip
    add dl,07h

dskip:add dl,30h
      mov [rsi],dl
      inc rsi
      loop dup1

      display dispbuff,02
  
      ret
;*************Output*******************************
;[root@localhost A2]# nasm -f elf64 Ass2A.asm
;[root@localhost A2]# ld -o Ass2A Ass2A.o
;[root@localhost A2]# ./Ass2A

;Block contents before transfer
;Source block contents::01 02 03 04 05
;Destination block contents::00 00 00 00 00

;##### Menu for Non-overlapped Block Transfer #####

;1.Block Transfer without using string instructions
;2.Block Transfer with using string instructions
;3.Exit
;1

;Block contents after transfer
;Source block contents::01 02 03 04 05
;Destination block contents::01 02 03 04 05

;##### Menu for Non-overlapped Block Transfer #####

;1.Block Transfer without using string instructions
;2.Block Transfer with using string instructions
;3.Exit
;3
;[root@localhost A2]#