102 lines
1.4 KiB
NASM
102 lines
1.4 KiB
NASM
; THIS CODE HAS BEEN TESTED AND IS FULLY OPERATIONAL.
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; Problem Statement: Write X86/64 ALP to perform non-overlapped block transfer (WITHOUT string specific instructions). Block containing data can be defined in the data segment.
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; Code from Microprocessor (SPPU - Second Year - Computer Engineering - Content) repository on KSKA Git: https://git.kska.io/sppu-se-comp-content/Microprocessor/
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; BEGINNING OF CODE
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%macro print 2
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mov rax,1
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mov rdi,1
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mov rsi,%1
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mov rdx,%2
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syscall
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%endmacro
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section .data
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m1 db 10,"Source block:",10,13
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m1len equ $-m1
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m2 db 10,"Destination block after transfer:",10,13
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m2len equ $-m2
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space db" "
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spacelen equ $-space
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srcblk db 10h,20h,30h,40h,50h
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count equ 05h
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section .bss
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ans resb 4
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dstblk resb 5
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section .text
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global _start
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_start:
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print m1,m1len
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mov rsi,srcblk
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call disp_block
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print m2,m2len
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mov rsi,srcblk
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mov rdi,dstblk
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mov rcx,05
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s1: mov al,[rsi]
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mov [rdi],al
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inc rsi
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inc rdi
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loop s1
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mov rsi,dstblk
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call disp_block
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mov rax,60
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xor rdi,rdi
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syscall
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disp_block:
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mov rbp,count
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back:mov al,[rsi]
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push rsi
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call disp_8
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print space,1
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pop rsi
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inc rsi
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dec rbp
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jnz back
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ret
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disp_8:mov rsi,ans
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mov bl,al
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mov dl,bl
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rol dl,04
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and dl,0fh
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cmp dl,09h
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jbe add30
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add dl,07h
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add30:
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add dl,30h
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mov [rsi],dl
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inc rsi
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mov dl,bl
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and dl,0fh
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cmp dl,09h
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jbe add130
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add dl,07h
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add130:
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add dl,30h
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mov [rsi],dl
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print ans,2
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ret
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; END OF CODE
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