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我一直在研究一个汇编程序，它对日期列表进行排序，然后打印出排序最早的日期到最新的日期。日期格式为DD-MMM-YYYY，例如， “23-JUL-2010”。在调试汇编程序时遇到问题排序日期
我已经取得了稳定的进展，但现在我的程序马上崩溃了，而且我很难找出原因。我正在使用MASM32编辑器。
这是我的计划......
include \masm32\include\masm32rt.inc
.data?
number dd ?
.data
dates BYTE "23-JUL-2010", 0, "22-JUL-2010", 0, "23-JUL-2009", 0, "31-JUL-2012", 0, "05-MAR-2010", 0, "12-MAR-1010", 0
values dd 5 DUP(0, 0, 0, 0, 0)
nDates DWORD 6
counter DD 0
temp dd 0
years dd 0
months BYTE "JAN FEB MAR APR MAY JUN JUL AUG SEP OCT NOV DEC",0
.code
DateToNumber MACRO items, mons, result
LOCAL loop_top
PUSHAD
lea EDI, [items]
MOV AL, [EDI]
AAA
MOV BL, 10
MUL BL
MOV DL, AL
ADD EDI, 1
SUB EAX, EAX
MOV AL, [EDI]
AAA
ADD DL, AL
MOV result, EDX
SUB EDX, EDX
SUB ESI, ESI
SUB EDI, EDI
mov EAX, 0 ; EAX is the month number
loop_top:
lea ESI, [items+3] ; ESI will be a ptr into the date string we are trying to convert to a number
lea EDI, [mons + EAX * 4] ; EDI will be a ptr into the months array
inc EAX
mov ECX, 3 ; length of a month string
cld
repe cmpsb ; compare mystring and months for 3 characters
jne loop_top ; keep looping until we find the month
mov EBX, result
mov BH,AL
SUB EBX, EBX
MOV years, EBX
lea EDI, [items]
ADD EDI,7
MOV AL, [EDI]
AAA
MOV BX, 1000
MUL BX
MOV years, EAX
SUB BX, BX
SUB EAX, EAX
ADD EDI, 1
MOV AL, [EDI]
AAA
MOV BX, 100
MUL BX
SUB BX, BX
ADD years, EAX
SUB EAX, EAX
ADD EDI, 1
MOV AL, [EDI]
AAA
MOV BX, 10
MUL BX
SUB BX, BX
ADD years, EAX
SUB EAX, EAX
ADD EDI, 1
MOV AL, [EDI]
AAA
SHL EAX, 16
ADD result, EAX
POPAD
ENDM
start:
MOV ECX, 1
SUB EDX, EDX
SUB EAX, EAX
DateToNumber dates, months, number
MOV EAX, number
MOV values, EAX
DateToNumber [dates+12], months, number
MOV EAX, number
MOV [values+4], EAX
DateToNumber [dates+24], months, number
MOV EAX, number
MOV [values+8], EAX
DateToNumber [dates+48], months, number
MOV EAX, number
MOV [values+16], EAX
DateToNumber [dates+36], months, number
MOV EAX, number
MOV [values+12], EAX
DateToNumber [dates+60], months, number
MOV EAX, number
MOV [values+20], EAX
print chr$("[ ",)
;lea EDI, [values]
;push EDI
;Call BubbleSort
;Call NumberToDate
out_top:
mov eax, [values+esi*4]
mov temp, eax
print str$(temp)
print chr$(", ")
inc esi
cmp esi, 5
jne out_top
; Formatting the last character
mov eax, [values+esi*4]
mov temp, eax
print str$(temp)
print chr$(" ]", 13, 10)
exit
;NumberToDate-
; Parameter is a 32-bit unsigned number.
; Turns the number back into its corresponding date string.
; Returns the address of the string.
;
NumberToDate :
enter 0, 0
print "NumberToDate called"
leave
ret 0
;BubbleSort-
; Parameters are the address of an array of 32-bit unsigned numbers and the length of the array.
; Sorts the array in place from smallest to largest.
; No return value.
;
BubbleSort:
enter 0, 0
PUSHAD
mov ecx, 0
mov edx, 0
print "BubbleSort called"
MOV ESI, [EBP + 8]
top:
cmp edx, 5
je inc_loop
inc edx
mov eax, [esi+ecx*4] ; moves array index 0 into eax
cmp [esi+edx*4], eax ; compares index 1 to index 2
jl top ; jumps to top if index1 is less than or equal to index 2
; swaps the values edx and ecx are pointing to
mov ebx, [esi+edx*4]
mov [esi+ecx*4], ebx
mov [esi+edx*4], eax
jmp top
inc_loop:
mov edx, -1
inc ecx
cmp ecx, 5
jl top
POPAD
leave
ret 4
END start
如果你们能帮助我理解我要去哪里错了，还是帮我调试此我将不胜感激。提前致谢！
您是否尝试过使用调试器？这是一个程序，可让您单步执行程序并查看寄存器/内存。或者让它运行，并告诉你它在崩溃点的状态。调试器对编写asm非常有帮助：在没有人的情况下工作就像试图在蒙上眼睛时构建机器人一样。 –
所以用MASM进行组装并用别的东西进行调试。咄。我的C编译器不是一个调试器（更不用说编辑器了）。我使用GDB来调试程序集C和C++。 –