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  • JCC 指令

    JCC跳转指令

    JCC指条件跳转指令,CC就是指条件码。

    JCC指令 中文含义 英文原意 检查符号位 典型C应用
    JZ/JE 若为0则跳转;若相等则跳转 jump if zero;jump if equal ZF=1 if (i == j);if (i == 0);
    JNZ/JNE 若不为0则跳转;若不相等则跳转 jump if not zero;jump if not equal ZF=0 if (i != j);if (i != 0);
    JS 若为负则跳转 jump if sign SF=1 if (i < 0);
    JNS 若为正则跳转 jump if not sign SF=0 if (i > 0);
    JP/JPE 若1出现次数为偶数则跳转 jump if Parity (Even) PF=1 (null)
    JNP/JPO 若1出现次数为奇数则跳转 jump if not parity (odd) PF=0 (null)
    JO 若溢出则跳转 jump if overflow OF=1 (null)
    JNO 若无溢出则跳转 jump if not overflow OF=0 (null)
    JC/JB/JNAE 若进位则跳转;若低于则跳转;若不高于等于则跳转 jump if carry;jump if below;jump if not above equal CF=1 if (i < j);
    JNC/JNB/JAE 若无进位则跳转;若不低于则跳转;若高于等于则跳转; jump if not carry;jump if not below;jump if above equal CF=0 if (i >= j);
    JBE/JNA 若低于等于则跳转;若不高于则跳转 jump if below equal;jump if not above ZF=1或CF=1 if (i <= j);
    JNBE/JA 若不低于等于则跳转;若高于则跳转 jump if not below equal;jump if above ZF=0或CF=0 if (i > j);
    JL/JNGE 若小于则跳转;若不大于等于则跳转 jump if less;jump if not greater equal jump SF != OF if (si < sj);
    JNL/JGE 若不小于则跳转;若大于等于则跳转; jump if not less;jump if greater equal SF = OF if (si >= sj);
    JLE/JNG 若小于等于则跳转;若不大于则跳转 jump if less equal;jump if not greater ZF != OF 或 ZF=1 if (si <= sj);
    JNLE/JG 若不小于等于则跳转;若大于则跳转 jump if not less equal;jump if greater SF=0F 且 ZF=0 if(si>sj)
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  • 原文地址:https://www.cnblogs.com/songyaqi/p/12075038.html
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