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  • assembly x86(nasm)的日常

    cs的日常打卡。

    data    segment
    ENG         db    'SUNdayS Coming I Wanna Drive My Car,SUN,SUN$'        ;43,35
    sun1        db    'SUN'
    swcount        db    0ah,0dh,'single word number:',?,?,'$'
    suncount    db    0ah,0dh,'SUN:',?,'$'
    data    ends
    code    segment
    assume    cs:code,ds:data,es:data
    start:
                mov    ax,data
                mov    ds,ax    
                mov    es,ax        
                lea dx,ENG        
                mov    ah,9                        
                int    21h
    swcount1:                                        
                mov al,ENG[si]
                cmp al,'$'
                jz     output1
                cmp al,'A'
                jb     next
                cmp al,'Z'
                ja     text1
                jmp addswc
    text1:        cmp al,'a'
                jb     next
                cmp al,'z'
                ja     next
    addswc:        inc swcount[21]
                cmp al,'S'
                jz  strcmp
                jmp next
    to:
                pop si
    next:        inc si
                jmp swcount1
    strcmp:
                push si
                cld
                xor di,di
                lea di,sun1
                lea si,ENG[si]
                mov cx,3
                repz cmpsb
                jnz addcount
                inc suncount[6]
    addcount:    
                jmp to
    
    output1:
                xor cx,cx    
                mov al,swcount[21]
                cbw
    loopb:
                xor dx,dx
                inc cl
                mov bx,10
                div bx                    ;ax商,dx余
                push dx                    ;余数入栈
                cmp ax,0
                jne loopb
                xor si,si
    loopc: 
                pop dx
                or  dl,00110000b
                mov swcount[21+si],dl
                inc si
                loop loopc
    
                lea dx,swcount    
                mov    ah,9                        
                int    21h                
                or suncount[6],00110000b
                lea dx,suncount
                mov    ah,9                        
                int    21h            
    exit:        mov    ah,4ch                        
                int    21h
    code    ends
    end    start
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  • 原文地址:https://www.cnblogs.com/lanclot-/p/10981918.html
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