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问题描述
我已经尝试将算法转换为汇编x86了几天，我做到了。但是，我想打印保存在 tmp中的最终结果，我可以使用什么指令？ （我是西班牙语，所以如果我用英语说错了，我很抱歉）。
这是我的算法：
I have been for some days trying to translate an algorithm to assembly x86, and I did it. However I would like to print the final result that it is saved in "tmp", what instruction can I use? (I'm Spanish so I'm sorry if I say something wrong in English).This is my algorithm:
tmp = NOT(L0)
tmp = tmp AND L1
tmp = NOT(NOT(tmp) OR NOT(L2))
tmp = NOT(tmp OR NOT(L3))
tmp = NOT(tmp + NOT(L4))
if (tmp == L5)
licence = correct
else
licence = incorrect
这就是汇编程序：
LicenceCorrect PROC
push ebp
mov ebp,esp
push ebx
push ecx
push edx
mov ebx, [ebp+8]
mov edx,[ebx]
mov ecx,edx
not ecx
mov edx,[ebx+4]
and ecx,edx
mov edx,[ebx+8]
not edx
not ecx
or ecx,edx
not ecx
mov edx,[ebx+16]
not edx
or ecx,edx
not ecx
;if
mov edx,[ebx]
cmp ecx,edx
jne cons
mov al,0
jmp next
cons:
mov al,1
next:
pop edx
pop ecx
pop ebx
pop ebp
ret
LicenceCorrect ENDP
END
推荐答案
下一个代码在AX中显示一个数字（用EMU8086制造）。 MissPaper现在必须要做的是在下一个代码的末尾插入您的过程（LicenseCorrect），并在调用美元之后调用它，然后将该值分配给AX（删除 12345）。
Next code displays a number in AX (made with EMU8086). What MissPaper must do now is insert your procedure (LicenseCorrect) at the end of next code, and call it after "call dollars", then assign the value to AX (remove "12345").
这里是32位：
.model small
.stack 100h
.data
buffer db 6 dup(?)
.code
start:
;INITIALIZE DATA SEGMENT.
mov ax, @data
mov ds, ax
;FIRST, FILL BUFFER WITH '$' (NECESSARY TO DISPLAY).
mov si, offset buffer
call dollars
;SECOND, CONVERT NUMBER TO STRING.
mov ax, 12345
mov si, offset buffer
call number2string
;THIRD, DISPLAY STRING.
mov dx, offset buffer
call printf
;FINISH PROGRAM.
mov ax, 4c00h
int 21h
;-----------------------------------------
;PARAMETER : DX POINTING TO '$' FINISHED STRING.
printf proc
mov ah, 9
int 21h
ret
printf endp
;------------------------------------------
;FILLS VARIABLE WITH '$'.
;USED BEFORE CONVERT NUMBERS TO STRING, BECAUSE
;THE STRING WILL BE DISPLAYED.
;PARAMETER : SI = POINTING TO STRING TO FILL.
dollars proc
mov cx, 6
six_dollars:
mov bl, '$'
mov [ si ], bl
inc si
loop six_dollars
ret
dollars endp
;------------------------------------------
;CONVERT A NUMBER IN STRING.
;ALGORITHM : EXTRACT DIGITS ONE BY ONE, STORE
;THEM IN STACK, THEN EXTRACT THEM IN REVERSE
;ORDER TO CONSTRUCT STRING (STR).
;PARAMETERS : AX = NUMBER TO CONVERT.
; SI = POINTING WHERE TO STORE STRING.
number2string proc
mov bx, 10 ;DIGITS ARE EXTRACTED DIVIDING BY 10.
mov cx, 0 ;COUNTER FOR EXTRACTED DIGITS.
cycle1:
mov dx, 0 ;NECESSARY TO DIVIDE BY BX.
div bx ;DX:AX / 10 = AX:QUOTIENT DX:REMAINDER.
push dx ;PRESERVE DIGIT EXTRACTED FOR LATER.
inc cx ;INCREASE COUNTER FOR EVERY DIGIT EXTRACTED.
cmp ax, 0 ;IF NUMBER IS
jne cycle1 ;NOT ZERO, LOOP.
;NOW RETRIEVE PUSHED DIGITS.
cycle2:
pop dx
add dl, 48 ;CONVERT DIGIT TO CHARACTER.
mov [ si ], dl
inc si
loop cycle2
ret
number2string endp
end start
现在使用 GUI Turbo Assembler x64 （）：
.model small
.586
.stack 100h
.data
buffer db 11 dup(?)
.code
start:
;INITIALIZE DATA SEGMENT.
mov ax, @data
mov ds, ax
;FIRST, FILL BUFFER WITH '$' (NECESSARY TO DISPLAY).
mov esi, offset buffer
call dollars
;SECOND, CONVERT NUMBER TO STRING.
mov eax, 1234567890
mov esi, offset buffer
call number2string
;THIRD, DISPLAY STRING.
mov dx, offset buffer
call printf
;FINISH PROGRAM.
mov ax, 4c00h
int 21h
;-----------------------------------------
;PARAMETER : DX POINTING TO '$' FINISHED STRING.
printf proc
mov ah, 9
int 21h
ret
printf endp
;------------------------------------------
;FILLS VARIABLE WITH '$'.
;USED BEFORE CONVERT NUMBERS TO STRING, BECAUSE
;THE STRING WILL BE DISPLAYED.
;PARAMETER : ESI = POINTING TO STRING TO FILL.
dollars proc
mov cx, 11
six_dollars:
mov bl, '$'
mov [ esi ], bl
inc esi
loop six_dollars
ret
dollars endp
;------------------------------------------
;CONVERT A NUMBER IN STRING.
;ALGORITHM : EXTRACT DIGITS ONE BY ONE, STORE
;THEM IN STACK, THEN EXTRACT THEM IN REVERSE
;ORDER TO CONSTRUCT STRING (STR).
;PARAMETERS : EAX = NUMBER TO CONVERT.
; ESI = POINTING WHERE TO STORE STRING.
number2string proc
mov ebx, 10 ;DIGITS ARE EXTRACTED DIVIDING BY 10.
mov cx, 0 ;COUNTER FOR EXTRACTED DIGITS.
cycle1:
mov edx, 0 ;NECESSARY TO DIVIDE BY EBX.
div ebx ;EDX:EAX / 10 = EAX:QUOTIENT EDX:REMAINDER.
push dx ;PRESERVE DIGIT EXTRACTED (DL) FOR LATER.
inc cx ;INCREASE COUNTER FOR EVERY DIGIT EXTRACTED.
cmp eax, 0 ;IF NUMBER IS
jne cycle1 ;NOT ZERO, LOOP.
;NOW RETRIEVE PUSHED DIGITS.
cycle2:
pop dx
add dl, 48 ;CONVERT DIGIT TO CHARACTER.
mov [ esi ], dl
inc esi
loop cycle2
ret
number2string endp
end start
我没有添加您的过程，因为它使用了堆栈，并且在调用之前我不知道要推入什么值
I didn't add your procedure because it uses the stack and I don't know what values to push before calling it.
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