网站建设+太原,西安整站优化,做网站可以找设计公司吗,北京 网站制作跳转指令分三类: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… 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: 11 10 9 8 7 6 5 4 3 2 1 0 OF DF IF TF SF ZF 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 1jmp FPrintText 2PrintText 3
: PrintText 4ret
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 1mov eax, 123cmp eax, 123je FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJZ 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 1xor eax, eaxjz FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJS 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 1xor eax, eaxdec eaxjs FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJC 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 1mov al, 0FFhadd al, 1jc FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJO 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 1mov al, -128sub al, 1jo FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJA 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 1mov eax, 22cmp eax, 11ja FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJG 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 1mov eax, 1cmp eax, -1jg FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJP 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 1mov al, 00001110binc aljp FPrintText 2PrintText 3
: PrintText 4ret
main endp
end mainJECXZ 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 1xor ecx, ecxjecxz FPrintText 2PrintText 3
: PrintText 4ret
main endp
end main
