问在程序集中排序，气泡

EN

mov EBX, [ESI]      ;EBX = array[i]   ;;BREAKPOINT ERROR IS THROWN HERE

.586
.MODEL FLAT

INCLUDE io.h

.STACK 4096

.DATA
user_array    DWORD 10 DUP (?)
nbrElts        DWORD 10

welcomeLbl BYTE    "Array Bubble Sorting Program ", 0
wel_message BYTE "Please enter 10 unique integers", 0
prompt1 BYTE    "Please enter a number: ", 0
string  BYTE    40 DUP (?)

array_contentLbl BYTE "The values you entered: ", 0
array_val DWORD ?, 0ah, 0dh

resultLbl BYTE "Program will now sort the numbers", 0
waitMsg     BYTE "Please wait.....",0

.CODE

_MainProc PROC
output welcomeLbl, wel_message
lea ebx, user_array
mov ecx, nbrElts

forCount1:
    input   prompt1, string, 40        ; prompt user for a number
    atod    string                    ;convert to integer
    mov [ebx], eax
    add ebx, 4
    loop forCount1

lea ebx, user_array                ;ptr to array, index 0
mov ecx, nbrElts                ;move counter to ecx for loop

forCount2:                    ;loop to output array contents
    mov eax, [ebx]
    mov array_val, eax
    dtoa array_val, eax
    output array_contentLbl, array_val      
    add ebx, 4
    loop forCount2

output resultLbl, waitMsg
push ebx
push ecx
call bubble_sort

lea ebx, user_array                ;ptr to array, index 0
mov ecx, nbrElts                ;move counter to ecx for loop

forCount3:
    mov eax, [ebx]
    mov array_val, eax
    dtoa array_val, eax
    output array_contentLbl, array_val      
    add ebx, 4
    loop forCount3

    quit:        mov eax, 0            ;clear memory
                mov ebx, 0
                mov ecx, 0
                mov edx, 0
    ret
_MainProc ENDP

Bubble_sort PROC

;These registers must be restored at the end
push EBP
mov  EBP, ESP
push EBX
push ESI
push EDI

;EBP + 8    is the array
;EBP + 12   is the number of items in the array

mov ESI, [EBP+8]    ;ESI is the array
mov ECX, [EBP+12]   ;setting ECX to the number of items
xor EAX, EAX        ;Setting EAX to 0, it'll be our iterator

MainLoop:
    ;If 'i' >= the number of items, exit the loop
    cmp EAX, ECX
    jge EndLoop     

    ;If 'i' == 0, move to the next element
    cmp EAX, 0
    je IncreaseCounter

    ;If array[i-1] <= array[i], it means they are
    ;sorted, so move to the next element
    mov EBX, [ESI]      ;EBX = array[i]   ;;BREAKPOINT ERROR IS THROWN HERE
    mov EDX, [ESI-4]    ;EDX = array[i-1]
    cmp EDX, EBX
    jle IncreaseCounter

    ;else, swap array[i-1] with array[i]
    push [ESI]
    push [ESI-4]

    pop [ESI]
    pop [ESI-4]

    ;Move to the previous element in the array
    ;and decrease 'i'
    sub ESI, 4
    dec EAX

    ;Loop back to the top
    BackToMainLoop:
    jmp MainLoop

    ;Moving to the next element in the array
    ;and increasing 'i'
IncreaseCounter:
    inc EAX
    add ESI, 4
    jmp BackToMainLoop

EndLoop:

;Restoring the registers
pop EDI
pop ESI
pop EBX
pop EBP

RET
bubble_sort ENDP
END