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我想了解給定例子的x86彙編語言。你能給我一些關於這段代碼的建議嗎?代碼不是我的,但評論是。學習x86彙編語言。需要一些說明
bits 16 ; what this means?
org 100h ; what this means?
section .bss ; section for data
tekst resb50 ; variable tekst type resb50
section .text ; main application instructions
mov SI,tekst ; copy value of tekst to SI. What value contains 'tekst'?
et1: ; label et1
mov AH,01h ; interrupt for read input
int 21h ; call interrupt
mov [SI],AL ; copy AL to [SI]. Why AL? Why square brackets?
cmp AL,'0' ; compare AL data with '0'
je petla ; if equal jump to petla
inc SI ; increment SI
jmp et1 ; jump et1
mov AH,'w' ; copy 'w' to AH
mov SI,tekst ; copy tekst to SI.
petla:
cmp byte [SI], '0' ; compare '0' with [SI] data
je et3 ; if equal jump et3
cmp AH,[SI] ; compare [SI] data with AH
je et2 ; if qual jump et2
inc SI
jmp petla ; jump to petla
我對上述評論有錯嗎?
'tekst resb 50' =在你的情況下保留一個包含size字節的內存塊,50嗎? – 2013-02-14 14:06:24