跳轉指令分三類:
一、無條件跳轉: JMP;
二、根據 CX、ECX 寄存器的值跳轉: JCXZ(CX 為 0 則跳轉)、JECXZ(ECX 為 0 則跳轉);
三、根據 EFLAGS 寄存器的標志位跳轉, 這個太多了.

根據標志位跳轉的指令:

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JE ;等于則跳轉 JNE ;不等于則跳轉JZ ;為 0 則跳轉 JNZ ;不為 0 則跳轉JS ;為負則跳轉 JNS ;不為負則跳轉JC ;進位則跳轉 JNC ;不進位則跳轉JO ;溢出則跳轉 JNO ;不溢出則跳轉JA ;無符號大于則跳轉 JNA ;無符號不大于則跳轉 JAE ;無符號大于等于則跳轉 JNAE ;無符號不大于等于則跳轉JG ;有符號大于則跳轉 JNG ;有符號不大于則跳轉 JGE ;有符號大于等于則跳轉 JNGE ;有符號不大于等于則跳轉JB ;無符號小于則跳轉 JNB ;無符號不小于則跳轉 JBE ;無符號小于等于則跳轉 JNBE ;無符號不小于等于則跳轉JL ;有符號小于則跳轉 JNL ;有符號不小于則跳轉 JLE ;有符號小于等于則跳轉 JNLE ;有符號不小于等于則跳轉JP ;奇偶位置位則跳轉 JNP ;奇偶位清除則跳轉 JPE ;奇偶位相等則跳轉 JPO ;奇偶位不等則跳轉

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跳轉相關的標志位:
11109876543210OFDFIFTFSFZF　AF　PF　CF

溢 出				符 號	零	未 用	輔 助	未 用	奇 偶	未 用	進 位

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JMP 測試

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; Test28_1.asm; .386 .model flat, stdcallinclude windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib.code main procPrintText '1'jmp @FPrintText '2'PrintText '3' @@: PrintText '4'ret main endp end main ;測試結果應該是: ;1 ;4 ;以下都應該是這樣.

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JE 測試

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

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JZ 測試

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; Test28_3.asm; .386 .model flat, stdcallinclude windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib.code main procPrintText '1'xor eax, eaxjz @FPrintText '2'PrintText '3' @@: PrintText '4'ret main endp end main

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JS 測試

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; Test28_4.asm; .386 .model flat, stdcallinclude windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib.code main procPrintText '1'xor eax, eaxdec eaxjs @FPrintText '2'PrintText '3' @@: PrintText '4'ret main endp end main

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JC 測試

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; Test28_5.asm; .386 .model flat, stdcallinclude windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib.code main procPrintText '1'mov al, 0FFhadd al, 1jc @FPrintText '2'PrintText '3' @@: PrintText '4'ret main endp end main

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JO 測試

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

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JA 測試

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

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JG 測試

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

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JP 測試

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; Test28_9.asm; .386 .model flat, stdcallinclude windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib.code main procPrintText '1'mov al, 00001110binc aljp @FPrintText '2'PrintText '3' @@: PrintText '4'ret main endp end main

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JECXZ 測試

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; Test28_10.asm; .386 .model flat, stdcallinclude windows.inc include kernel32.inc include masm32.inc include debug.inc includelib kernel32.lib includelib masm32.lib includelib debug.lib.code main procPrintText '1'xor ecx, ecxjecxz @FPrintText '2'PrintText '3' @@: PrintText '4'ret main endp end main

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總結

以上是生活随笔為你收集整理的汇编语言跳转指令: JMP、JECXZ、JA、JB、JG、JL、JE、JZ、JS、JC、JO、JP 等的全部內容，希望文章能夠幫你解決所遇到的問題。

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