标签:汇编 main lib PrintDec 31 includelib Win32 include inc
学 Win32 汇编[31] - 结构与联合
结构和联合分别用 struct、union 定义, 都是 ends 结束定义.
它们使用方法相同, 并可以互相嵌套; 主要区别是后者的各成员共用同一个地址.
结构示例:
; Test31_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 ;定义结构 MyPoint struct X dd ? Y dd ? MyPoint ends .data ;声明结构, 使用 <>、{} 均可 pt1 MyPoint <> pt2 MyPoint {} pt3 MyPoint <33,44> pt4 MyPoint {55,66} pt5 MyPoint {77,} pt6 MyPoint {,88} pt7 MyPoint {,} .code main proc mov pt1.X, 11 mov pt1.Y, 22 inc pt1.X PrintDec pt1.X ;12 PrintDec pt1.Y ;22 ; PrintDec pt2.X ;0 PrintDec pt2.Y ;0 ; PrintDec pt3.X ;33 PrintDec pt3.Y ;44 ; PrintDec pt4.X ;55 PrintDec pt4.Y ;66 ; PrintDec pt5.X ;77 PrintDec pt5.Y ;0 ; PrintDec pt6.X ;0 PrintDec pt6.Y ;88 ; PrintDec pt7.X ;0 PrintDec pt7.Y ;0 ret main endp end main
联合示例:
; Test31_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 ;定义联合 MyUnion union D dd ? W dw ? B db ? MyUnion ends .data u1 MyUnion <> u2 MyUnion {1122h} ;只能有一个初始值 .code main proc mov u1.D, 12345678h PrintHex u1.D ;12345678 PrintHex u1.W ;5678 PrintHex u1.B ;78 ; PrintHex u2.D ;00001122 PrintHex u2.W ;1122 PrintHex u2.B ;22 ret main endp end main
用寄存器引用结构变量:
; Test31_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 MyPoint struct X dd ? Y dd ? MyPoint ends .data pt1 MyPoint <11,22> .code main proc lea ebx, pt1 PrintDec (MyPoint ptr [ebx]).X ;11 PrintDec (MyPoint ptr [ebx]).Y ;22 ret main endp end main
定义时的数据初始化:
; Test31_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 MyStruct struct FName db 12 dup(0) FAge db 66 MyStruct ends .data u1 MyStruct <> u2 MyStruct <'张三', 88> .code main proc PrintString u1.FName ; PrintDec u1.FAge ;66 PrintString u2.FName ;张三 PrintDec u2.FAge ;88 ret main endp end main
使用 SYSTEMTIME 结构获取系统时间的例子:
; Test31_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 ;SYSTEMTIME 结构定义在 windows.inc ;GetLocalTime 函数声明在 kernel32.inc .data sysTime SYSTEMTIME <> .code main proc invoke GetLocalTime, addr sysTime PrintDec sysTime.wYear ;2010 PrintDec sysTime.wMonth ;4 PrintDec sysTime.wDay ;22 ret main endp end main
结构嵌套:
; Test31_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 Pt struct X dd ? Y dd ? Pt ends Rect struct Left Pt <> Right Pt <> Rect ends .data r1 Rect <> r2 Rect <<55,66>, <77,88>> .code main proc mov r1.Left.X, 11 mov r1.Left.Y, 22 mov r1.Right.X, 33 mov r1.Right.Y, 44 PrintDec r1.Left.X ;11 PrintDec r1.Left.Y ;22 PrintDec r1.Right.X ;33 PrintDec r1.Right.Y ;44 PrintDec r2.Left.X ;55 PrintDec r2.Left.Y ;66 PrintDec r2.Right.X ;77 PrintDec r2.Right.Y ;88 ret main endp end mainposted on 2010-04-22 15:26 万一 阅读(2254) 评论(0) 编辑 收藏
标签:汇编,main,lib,PrintDec,31,includelib,Win32,include,inc
来源: https://blog.51cto.com/u_14617575/2745486
本站声明:
1. iCode9 技术分享网(下文简称本站)提供的所有内容,仅供技术学习、探讨和分享;
2. 关于本站的所有留言、评论、转载及引用,纯属内容发起人的个人观点,与本站观点和立场无关;
3. 关于本站的所有言论和文字,纯属内容发起人的个人观点,与本站观点和立场无关;
4. 本站文章均是网友提供,不完全保证技术分享内容的完整性、准确性、时效性、风险性和版权归属;如您发现该文章侵犯了您的权益,可联系我们第一时间进行删除;
5. 本站为非盈利性的个人网站,所有内容不会用来进行牟利,也不会利用任何形式的广告来间接获益,纯粹是为了广大技术爱好者提供技术内容和技术思想的分享性交流网站。