s1.cpp

命令行方式的硬盘工具 可以在dos和nt下运行。 需要djgpp和vs7.0以上

#include <iostream>
using namespace std;
extern "C" unsigned int Index_Kmp(char * pbyScrBuf,char  *pbyDesBuf,unsigned int scrLen,unsigned int dqDesLen );

int main(void)
{
	char buf[245],buf2[23];
	cout << Index_Kmp(buf, buf2, 2,2);
}
unsigned int Index_Kmp(char * pbyScrBuf,char  *pbyDesBuf,unsigned int scrLen,unsigned int dqDesLen )
{
	unsigned int  dwPos=scrLen;

	asm("pushal");
	asm("movl 0X8(%ebp),%edi");
	asm("movl 0XC(%ebp),%esi");
	asm("movl 0X10(%ebp),%ecx");
	asm("xorl %eax,%eax");
	asm("movb 0X14(%ebp),%ah");
	asm("dec %ah");
	asm("pushl %ebp");
	asm("movl %esi,%ebp");
	asm("cld");
	asm("jmp *start_search");
	asm("again:movl %ebp,%esi");
	asm("movl %edx,%edi");
	asm("movl %ebx,%ecx");
	asm("start_search:lodsb");
	asm("repne;scasb");
	asm("jecxz no_found");
	asm("movl %edi,%edx");
	asm("movl %ecx,%ebx");
	asm("movzbl %ah,%ecx");
	asm("repe;cmpsb");
	asm("jne again");
	asm("movb %ah,%al");
	asm("xorb %ah,%ah");
	asm("subl %eax,%edi");
	asm("popl %ebp");
	asm("subl  %edi,-8(%ebp)");
	asm("jmp *ret_search");
	asm("no_found:popl %ebp");
	asm("movl $0XFFFFFFFF,-8(%ebp)");
	asm("ret_search:popal");

	return dwPos;
}