汇编语言跳转指令: JMP、JECXZ、JA、JB、JG、JL、JE、JZ、JS、JC、JO、JP 等

跳转指令分三类:
一、无条件跳转: JMP;
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 JNE ;不等于则跳转JZ ;为 0 则跳转 JNZ ;不为 0 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 JNAE ;无符号不大于等于则跳转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 JNGE ;有符号不大于等于则跳转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 JNBE ;无符号不小于等于则跳转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 JNLE ;有符号不小于等于则跳转JP ;奇偶位置位则跳转 JNP ;奇偶位清除则跳转 JPE ;奇偶位相等则跳转 JPO ;奇偶位不等则跳转

---

跳转相关的标志位:
11109876543210OFDFIFTFSFZF　AF　PF　CF

溢 出				符 号	零	未 用	辅 助	未 用	奇 偶	未 用	进 位

---

JMP 测试

---

; 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 ;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, 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

---

JZ 测试

---

; 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

---

JS 测试

---

; 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

---

JC 测试

---

; 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

---

JO 测试

---

; 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

---

JA 测试

---

; 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

---

JG 测试

---

; 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

---

JP 测试

---

; 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

---

JECXZ 测试

---

; 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

---

总结

以上是生活随笔为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 等的全部内容，希望文章能够帮你解决所遇到的问题。

如果觉得生活随笔网站内容还不错，欢迎将生活随笔推荐给好友。