学 Win32 汇编[28] - 跳转指令: JMP、JECXZ、JA、JB、JG、JL、JE、JZ、JS、JC、JO、JP 等

偏执的太偏执、 2022-09-26 03:14 158阅读 0赞

转自：[http://www.cnblogs.com/del/archive/2010/04/16/1713886.html][http_www.cnblogs.com_del_archive_2010_04_16_1713886.html]

http://pan.baidu.com/s/1gVTSi

跳转指令分三类:

一、无条件跳转:

JMP  ;无条件跳转

二、根据CX、ECX寄存器的值跳转:

JCXZ ;CX 为 0 则跳转
    JECXZ;ECX 为 0 则跳转

三、根据 EFLAGS 寄存器 的 PSW 标志位 跳转, 这个太多了.  
  
根据标志位跳转的指令:

--------------------

JE   ;等于则跳转			同JZ
    JNE  ;不等于则跳转		同JNZ
    
     JA   ;无符号大于则跳转
    JNA  ;无符号不大于则跳转
    JAE  ;无符号大于等于则跳转		同JNB
    JNAE ;无符号不大于等于则跳转	同JB
     JB   ;无符号小于则跳转
    JNB  ;无符号不小于则跳转
    JBE  ;无符号小于等于则跳转		同JNA
    JNBE ;无符号不小于等于则跳转	同JA 
     JG   ;有符号大于则跳转
    JNG  ;有符号不大于则跳转
    JGE  ;有符号大于等于则跳转		同JNL
    JNGE ;有符号不大于等于则跳转	同JL 
     JL   ;有符号小于则跳转
    JNL  ;有符号不小于则跳转
    JLE  ;有符号小于等于则跳转		同JNG
    JNLE ;有符号不小于等于则跳转	同JG
     JZ   ;为零则跳转
    JNZ  ;不为零则跳转
    
    JS   ;为负则跳转
    JNS  ;不为负则跳转
    
    JC   ;进位则跳转
    JNC  ;不进位则跳转
    
    JO   ;溢出则跳转
    JNO  ;不溢出则跳转 
    JP   ;为偶则跳转 JNP  ;不为偶则跳转 JPE  ;奇偶位置位则跳转		同JP JPO  ;奇偶位复位则跳转		同JNP

跳转相关的PSW标志位:

--------------------

影响标志位的汇编指令:

加法指令：ADD、ADC、INC、XADD
                      
                      除了INC不影响CF标志位外，都影响条件标志位。
                      CF、ZF、SF、OF
                      CF最高位是否有进位
                      DF若两个操作数符号相同而结果符号与之相反OF=1，否则OF=0.
    
    减法指令：SUB、SBB、DEC、NEG、CMP、CMPXCHG、CMPXCHG8B
                      
                      前六种除了DEC不影响CF标志外都影响标志位。CMPXHG8B只影响ZF。
                      CF说明无符号数相减的溢出，同时又确实是被减数最高有效位向高位的借位。
                      OF位则说明带符号数的溢出
                      无符号运算时，若减数>被减数，有借位CF=1，否则CF=0.
                      OF若两个数符号相反，而结果的符号与减数相同则OF=1.否则OF=0.
    
    乘法指令：MUL、IMUL
                      
                      MUL：如果乘积高一半为0，则CF和OF位均为0，否则CF和OF均为1.
                      IMUL：如果高一半是低一半符号的扩展，则CF位和OF位均为0，否则就均为1.
    
    除法指令：DIV、IDIV
                      
                      对所有条件位均无定义。
    
    逻辑指令：AND、OR、NOT、XOR、TEST
                      
                      NOT不影响标志位，其余4种CF、OF、置0，AF无定义，SF、ZF、PF位看情况而定。
    
    定位扫描指令：BSF正向位扫描、BSR反向位扫描
                      
                      影响ZF位。

<table style="color:rgb(51,51,51); font-family:Arial; font-size:14px; line-height:26px"> 
 <tbody> 
 <tr> 
 <td colspan="3"> 指令类型 </td> 
 <td> 助记符 </td> 
 <td colspan="9"> 对标志寄存器的影响 </td> 
 <td> 备注 </td> 
 </tr> 
 <tr> 
 <td> ZF </td> 
 <td> CF </td> 
 <td> PF </td> 
 <td> SF </td> 
 <td> OF </td> 
 <td> AF </td> 
 <td> DF </td> 
 <td> IF </td> 
 <td> TF </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> &nbsp; &nbsp; &nbsp; &nbsp; 数据传送类 </td> 
 <td colspan="2"> 通用 </td> 
 <td> MOV </td> 
 <td colspan="9"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 交换 </td> 
 <td> XCHG </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 堆栈操作 </td> 
 <td> PUSH </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> POP </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; 地址传送 </td> 
 <td> LEA </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> LDS </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> LES </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; 累加器专用 </td> 
 <td> IN </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> OUT </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> XALT </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; 标志寄存器 </td> 
 <td> LAHF </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> SAHF </td> 
 <td colspan="9"> 标志寄存器低八位的内容由AH的值决定 </td> 
 <td> CF,AF,ZF,SF,PF的值会被影响 </td> 
 </tr> 
 <tr> 
 <td> PUSHF </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> POPF </td> 
 <td colspan="9"> 标志寄存器的内容由装入的具体值决定 </td> 
 <td> 可能影响所有标志位 </td> 
 </tr> 
 <tr> 
 <td> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 算术运算类 </td> 
 <td colspan="2"> &nbsp; &nbsp; 加法 </td> 
 <td> ADD </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> ADC </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> INC </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> INC指令不影响CF </td> 
 </tr> 
 <tr> 
 <td> AAA </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> ？表示不确定或者未定义 </td> 
 </tr> 
 <tr> 
 <td> DAA </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; &nbsp; 减法 </td> 
 <td> SUB </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> SBB </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> DEC </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> DEC指令不影响CF </td> 
 </tr> 
 <tr> 
 <td> AAS </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> DAS </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> DAA指令不影响OF </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; 乘法 </td> 
 <td> MUL </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> IMUL </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> AAM </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; 除法 </td> 
 <td> DIV </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> 此指令可能会产生中断，故影响IF,TF </td> 
 </tr> 
 <tr> 
 <td> IDIV </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> 同上 </td> 
 </tr> 
 <tr> 
 <td> AAD </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 符号位扩展 </td> 
 <td> CBW </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> CWD </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 比较 </td> 
 <td> CMP </td> 
 <td colspan="9"> 由计算结果确定标志位的值 </td> 
 <td> 不会影响到DF,IF,TF </td> 
 </tr> 
 <tr> 
 <td> &nbsp; &nbsp; 逻辑运算类 </td> 
 <td> &nbsp; &nbsp; 单 操 作 数 </td> 
 <td> 求反 </td> 
 <td> NOT </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> &nbsp; 移位 </td> 
 <td> SAL </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> 见 备 注 </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; OF标志位只在移位次数是1时有效 AF未定义 </td> 
 </tr> 
 <tr> 
 <td> SHL </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> SAR </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> SHR </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> &nbsp; 循环 移位 </td> 
 <td> ROL </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; 循环移位指令影响OF和CF AF未定义 </td> 
 </tr> 
 <tr> 
 <td> ROR </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> RCL </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> RCR </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> ？ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> &nbsp; </td> 
 <td> 双 操 作 数 </td> 
 <td> 与 </td> 
 <td> AND </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> 或 </td> 
 <td> OR </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> 异或 </td> 
 <td> XOR </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> 检测 </td> 
 <td> TSET </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> √ </td> 
 <td> √ </td> 
 <td> 置0 </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> 字符串操作 </td> 
 <td colspan="2"> 传送 </td> 
 <td> MOVS </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 比较 </td> 
 <td> CMPS </td> 
 <td colspan="9"> 由计算结果确定标志位的值 </td> 
 <td> 不会影响DF,IF,TF </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 搜索 </td> 
 <td> SCAS </td> 
 <td colspan="9"> 由计算结果确定标志位的值 </td> 
 <td> 不会影响DF,IF,TF </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 装入 </td> 
 <td> LODS </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 填充 </td> 
 <td> STOS </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 前缀 </td> 
 <td> REP </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 程序控制类 </td> 
 <td colspan="2"> 无条件转移 </td> 
 <td> JMP </td> 
 <td colspan="9"> &nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> &nbsp; &nbsp; &nbsp; 条 件 转 移 </td> 
 <td> &nbsp; 单个 标志 位 </td> 
 <td> JS/JNS </td> 
 <td> SF=1/0,则转移到目的地址 </td> 
 </tr> 
 <tr> 
 <td> JZ/ JNZ </td> 
 <td> ZF=1/0,则转移到目的地址 </td> 
 </tr> 
 <tr> 
 <td> JP/JNP </td> 
 <td> PF=1/0,则转移到目的地址 </td> 
 </tr> 
 <tr> 
 <td> JB/JNB </td> 
 <td> CF=1/0,则转移到目的地址 </td> 
 </tr> 
 <tr> 
 <td> JO/JNO </td> 
 <td> OF=1/0,则转移到目的地址 </td> 
 </tr> 
 <tr> 
 <td> 若干 标志 位的 逻辑 组合 </td> 
 <td> JA </td> 
 <td> 两个无符号数比较，A&gt;B </td> 
 </tr> 
 <tr> 
 <td> JBE </td> 
 <td> 两个无符号数比较，A &lt;=B </td> 
 </tr> 
 <tr> 
 <td> JG </td> 
 <td> 两个带符号数比较，A&gt;B </td> 
 </tr> 
 <tr> 
 <td> JGE </td> 
 <td> 两个带符号数比较，A&gt;=B </td> 
 </tr> 
 <tr> 
 <td> JL </td> 
 <td> 两个带符号数比较，A&lt;B </td> 
 </tr> 
 <tr> 
 <td> JLE </td> 
 <td> 两个带符号数比较，A &lt;=B </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; &nbsp; 循环控制 </td> 
 <td> LOOP </td> 
 <td colspan="9"> &nbsp; &nbsp; 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> LOOPE </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> LOOPNE </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> JCXZ </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> JECXZ </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> &nbsp; 中断控制 </td> 
 <td> INT </td> 
 <td colspan="9"> 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> INTO </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td> IRET </td> 
 <td colspan="9"> 影响所有标志位 </td> 
 <td> 标志位到恢复中断以前的状态 </td> 
 </tr> 
 <tr> 
 <td> &nbsp; &nbsp; &nbsp; CPU控制指令 </td> 
 <td colspan="2"> &nbsp; &nbsp; &nbsp; 标志位操作 </td> 
 <td> CLC </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> 此指令置CF=0 </td> 
 </tr> 
 <tr> 
 <td> CMC </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> 此指令CF取反 </td> 
 </tr> 
 <tr> 
 <td> STC </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> 此指令置CF=1 </td> 
 </tr> 
 <tr> 
 <td> CLD </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> 此指令置DF=0 </td> 
 </tr> 
 <tr> 
 <td> STD </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> 此指令置DF=1 </td> 
 </tr> 
 <tr> 
 <td> CLI </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> 此指令置IF=0 </td> 
 </tr> 
 <tr> 
 <td> STI </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> &nbsp; </td> 
 <td> √ </td> 
 <td> &nbsp; </td> 
 <td> 此指令置IF=1 </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 空操作 </td> 
 <td> NOP </td> 
 <td colspan="9"> &nbsp; &nbsp; 不影响标志位 </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 暂停 </td> 
 <td> HLT </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 等待 </td> 
 <td> WAIT </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 交权 </td> 
 <td> ESC </td> 
 <td> &nbsp; </td> 
 </tr> 
 <tr> 
 <td colspan="2"> 总线锁定前缀 </td> 
 <td> LOCK </td> 
 <td> &nbsp; </td> 
 </tr> 
 </tbody> 
</table>

--------------------

JMP 测试

--------------------

; Test28_1.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        jmp @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main
    
    ;测试结果应该是:
    ;1
    ;4
    ;以下都应该是这样.

JE 测试

--------------------

; Test28_2.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        mov eax, 123
        cmp eax, 123
        je @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JZ 测试

--------------------

; Test28_3.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        xor eax, eax
        jz @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JS 测试

--------------------

; Test28_4.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        xor eax, eax
        dec eax
        js @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JC 测试

--------------------

; Test28_5.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        mov al, 0FFh
        add al, 1
        jc @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JO 测试

--------------------

; Test28_6.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        mov al, -128
        sub al, 1
        jo @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JA 测试

--------------------

; Test28_7.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        mov eax, 22
        cmp eax, 11
        ja @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JG 测试

--------------------

; Test28_8.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        mov eax, 1
        cmp eax, -1
        jg @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JP 测试

--------------------

; Test28_9.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        mov al, 00001110b
        inc al
        jp @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

JECXZ 测试

--------------------

; Test28_10.asm;
    .386
    .model flat, stdcall
    
    include    windows.inc
    include    kernel32.inc
    include    masm32.inc
    include    debug.inc
    includelib kernel32.lib
    includelib masm32.lib
    includelib debug.lib
    
    .code
    main proc
        PrintText '1'
        xor ecx, ecx
        jecxz @F
        PrintText '2'
        PrintText '3'
    @@: PrintText '4'
        ret
    main endp
    end main

[http_www.cnblogs.com_del_archive_2010_04_16_1713886.html]: http://www.cnblogs.com/del/archive/2010/04/16/1713886.html