我正在使用来自 Github 的一些代码,但它不会编译。调试器在代码编译过程中打开。这是一个个人项目,如果有人可以对代码进行有用的编辑,因为我是汇编新手,这将非常有帮助。
这是在调试器打开之前我得到的输出:
“Assembly.exe”:已加载“C:\Users\Mayank\Desktop\Assembly\Debug\Assembly.exe”,已加载符号。“Assembly.exe”:已加载“C:\Windows\SysWOW64\ntdll.dll”,找不到或打开 PDB 文件“Assembly.exe”:已加载“C:\Windows\SysWOW64\kernel32.dll”,找不到或打开 PDB 文件“Assembly.exe”:已加载“C:\Windows\SysWOW64\KernelBase.dll”,找不到或打开 PDB 文件“Assembly.exe”:已加载“C:\Windows\SysWOW64\msvcr100d.dll” , 符号加载。Assembly.exe 中 0x011013fe 的第一次机会异常:0xC00000FD:堆栈溢出。Assembly.exe 中 0x011013fe 处的未处理异常:0xC00000FD:堆栈溢出。
这是代码:
//
// main.cpp
// MergeSortC
//
// Copyright (c) 2012 Mayank. All rights reserved.
//
#include <iostream>
#include <cmath>
#include <stdio.h>
using namespace std;
const int ARRAYSIZE = 30;
int main()
{
int arr[ARRAYSIZE];
int temp_arr[ARRAYSIZE];
int number;
for(int x = 0; x < ARRAYSIZE; x++)
{
number = (rand() % 99) + 1;
arr[x] = number;
}
Merge_Sort:
__asm
{
// EAX - Array start
// ECX - array length
// Merge_Sort (first half)
// Length of the first half
// ECX /= 2
push ECX
shr ECX, 2
call Merge_Sort
pop ECX
// Merge_Sort (second half)
push arr
push EBX
push ECX
// Length of the second half
// ECX = ECX - ECX/2
mov EDX, ECX
shr EDX, 1
sub ARRAYSIZE, EDX
imul EDX, 4
// Start index of the second half
// EAX = EAX + (ECX/2) * 4
add arr, EDX
push EDX
call Merge_Sort
pop EDX
pop ECX
pop EBX
pop arr
pushad
// Merge (first half, second half)
// Length of first half = ECX/2
// Length of second half = ECX - ECX/2
mov EDX, ECX
shr ECX, 1
sub EDX, ECX
// Start of second half = EAX + (ECX/2) * 4
mov EBX, EAX
mov EDI, ECX
imul EDI, 4
add EBX, EDI
// Index of temp array = 0
sub EDI, EDI
call Merge
popad
// Copy back the merged array from temp_arr to arr
call Merge_Copy_Back_Temp
ret
};
Merge:
__asm
{
// Merge two arrays contents.
// The final merged array will be in temp_arr
// Merging is done recursively.
// Arguments:
// EAX - First array's start
// EBX - Second array's start
// ECX - Length of first array
// EDX - Length of second array
// EDI - Index in temp array
pushad
// Handle the cases where one array is empty
cmp ARRAYSIZE, 0
jz First_Array_Over
cmp EDX, 0
jz Second_Array_Over
// Compare first elements of both the arrays
push ARRAYSIZE
push EDI
mov ECX, [arr]
mov EDI, [ECX]
cmp ECX, EDI
pop EDI
pop ECX
// Pick which ever is the least and update that array
jl Update_First_Array
jmp Update_Second_Array
ret
};
Update_First_Array:
__asm
{
// min_elem = min (first elements of first array and second array)
// Put min_elem into the temp array
push dword ptr [EAX]
pop dword ptr [temp_arr + EDI * 4]
add EAX, 4
dec ECX
inc EDI
// Recursively call Merge on the updated array and the
// other array
call Merge
popad
ret
};
Update_Second_Array:
__asm
{
// min_elem = min (first elements of first array and second array)
// Put min_elem into the temp array
push dword ptr [EBX]
pop dword ptr [temp_arr + EDI * 4]
add EBX, 4
dec EDX
inc EDI
// Recursively call Merge on the updated array and the
// other array
call Merge
popad
ret
};
Merge_Copy_Back_Temp:
__asm
{
// Copy back the temp array into original array
// Arguments:
// EAX - original array address
// ECX - original array length
pushad
// For copying back, the destination array is EAX
mov EBX, EAX
// Now, the source array is temp_arr
mov EAX, temp_arr
call Copy_Array
popad
ret
};
First_Array_Over:
__asm
{
// Copy the rest of the second array to the temp arr
// because the first array is empty
pushad
mov EAX, EBX
mov ECX, EDX
mov EBX, temp_arr
imul EDI, 4
add EBX, EDI
call Copy_Array
popad
popad
ret
};
Second_Array_Over:
__asm
{
// Copy the rest of the first array to the temp arr
// because the second array is empty
pushad
mov EBX, temp_arr
imul EDI, 4
add EBX, EDI
call Copy_Array
popad
popad
ret
};
Copy_Array:
__asm
{
// Copy array to destination array
// EAX - Array start
// EBX - Destination array
// ECX - Array length
// Trivial case
cmp ECX, 0
jz Copy_Empty_Array
push ECX
sub EDI, EDI
};
copy_loop:
__asm
{
// Copy each element
push dword ptr [EAX + EDI * 4]
pop dword ptr [EBX + EDI * 4]
inc EDI
loop copy_loop
pop ECX
ret
};
Copy_Empty_Array:
__asm
{
ret
};
Read_Arr:
__asm
{
// EAX - array start
// ECX - array length
mov ESI, arr
sub EDI, EDI
};
loop1:
__asm
{
// Read each element
lea eax,[esi+edx*4]
inc EDI
loop loop1
ret
};
return 0;
}