Kip Irvine 汇编语言 基于x86处理器 Chapter13 代码(含习题)

案例代码

01.addThree 外联汇编

test.asm

;测试函数 三个数相加 

.model flat, c

.code
	addThree_ proc
								;初始化栈帧指针
		push ebp
		mov ebp,esp
								;加载参数值
		mov eax,[ebp+8]
		mov ecx,[ebp+12]
		mov edx,[ebp+16]
								;求和
		add eax,ecx
		add eax,edx
								;恢复父函数的栈帧指针
		pop ebp
		ret
	addThree_ endp
end

main.cpp

//main.cpp 
#include <stdio.h>
#include <stdlib.h>

extern "C" int addThree_(int a, int b, int c);

int main()
{
   
   
	int a = 17;
	int b = 20;
	int c = 19;

	int sum = addThree_(a, b, c);

	printf("c = %d\n", sum);

	system("pause");
	return 0;
}

02.addThree 内嵌汇编

#include <stdio.h>
#include<stdlib.h>

int main()
{
   
   
    int a = 1, b = 2, c = 3;

    __asm//这里是双下划綫
    {
   
   
        push eax
        mov eax, a
        add eax, b
        add eax, c
        mov a, eax
        pop eax
    }

    printf("%d", a);
    system("pause");
    return 0;
}

03.findArray

findarr.h

// findarr.h

extern "C" 
{
   
   
	bool AsmFindArray(long n, long array[], long count);
	// Assembly language version
}

AsmFindArray.asm

TITLE FindArray Procedure      (AsmFindArray.asm)

; This version uses hand-optimized assembly language 
; code with the SCASD instruction. 

.586

.model flat,C

AsmFindArray PROTO,srchVal:DWORD, arrayPtr:PTR DWORD, count:DWORD

.code
    ;-----------------------------------------------
    AsmFindArray PROC USES edi,srchVal:DWORD, arrayPtr:PTR DWORD, count:DWORD
    ;
    ; Performs a linear search for a 32-bit integer
    ; in an array of integers. Returns a boolean 
    ; value in AL indicating if the integer was found.
    ;-----------------------------------------------
	    true    =   1
	    false   =   0

 	    mov	    eax,srchVal    			; search value
 	    mov	    ecx,count      			; number of items
 	    mov	    edi,arrayPtr   			; pointer to array

 	    repne	scasd           	    ; do the search
 	    jz	    returnTrue      		; ZF = 1 if found

    returnFalse:             
         mov	al, false     
         jmp	short exit

    returnTrue:
         mov	al, true

    exit:	
	    ret   
    AsmFindArray ENDP

END

main.cpp

// main.cpp - Testing the FindArray subroutine.

#include <stdlib.h>
#include <iostream>
#include "findarr.h"

using namespace std;

int main()
{
   
   
    const unsigned  ARRAY_SIZE          = 100   ;
    long            array[ARRAY_SIZE]           ;

    // Fill the array with pseudorandom integers.
    for (unsigned i = 0; i < ARRAY_SIZE; i++)
    {
   
   
        array[i] = rand();
        //cout << array[i] << " ";
    }

    cout << "\n\n";

    long searchVal;
    cout << "Enter an integer to find [0 to "<< RAND_MAX << "]: ";
    cin >> searchVal;

    if (AsmFindArray(searchVal, array, ARRAY_SIZE))
    {
   
   
        cout << "Your number was found.\n";
    }
    else
    {
   
   
        cout << "Your number was not found.\n";
    }
    return 0;
}

04.MultiplicationTable

subr.asm

; Multiplication Table program       (subr.asm)

; Calls external C++ functions.

INCLUDE Irvine32.inc

askForInteger	PROTO C
showInt			PROTO C, value:SDWORD, outWidth:DWORD



.data
	OUT_WIDTH		=		8
	ENDING_POWER	=		10
	intVal			DWORD	?

.code
	;---------------------------------------------
	SetTextOutColor PROC C,color:DWORD
	;
	; Sets the text colors and clears the console
	; window. Calls Irvine32 library functions.
	;---------------------------------------------
		mov		eax,color
		call	SetTextColor
		call	Clrscr
		ret
	SetTextOutColor ENDP

	;----------------------------------