实验二循环程序设计报告.doc

实验二 循环程序设计一实验目的：（1）掌握循环程序设计方法。（2）掌握循环程序的结构及循环程序的设计，调试方法。（3）学习逻辑运算指令的用法。二实验内容：（1）编程计算1-100的和（初始化为100的循环）;（2）编程计算S=1*2+2*3+3*4+N*（N+1）直到N200为止，并将结果由屏幕上显示出来;（3） 编程一程序求级数1*1+2*2+3*3+的前5项和及刚好大于1000的项数N。 1、编译: c:masm .asm2、链接: c:link .obj3、调试: c:debug .exe4、运行: c: .exe（1）1、编译: C:masm 2-1.asmC:UsersAdministratorcd C:masmC:masmmasm 2-1Microsoft (R) Macro Assembler Version 5.00Copyright (C) Microsoft Corp 1981-1985, 1987. All rights reserved.Object filename 2-1.OBJ:Source listing NUL.LST:Cross-reference NUL.CRF: 50390 + 415114 Bytes symbol space free 0 Warning Errors 0 Severe ErrorsC:masm2、链接: c:link 2-1.objC:masmlink 2-1Microsoft (R) Overlay Linker Version 3.65Copyright (C) Microsoft Corp 1983-1988. All rights reserved.Run File 2-1.EXE:List File NUL.MAP:Libraries .LIB:LINK : warning L4021: no stack segmentC:masm3、调试: c:debug 2-1.exe1）、先用命令U反汇编整个程序，查看每条指令的物理地址，其显示内容的含义为：内存地址 指令代码 反汇编的程序代码C:masmdebug 2-1.exe-u142F:0000 B82E14 MOV AX,142E 数据段的首地址是：142E代码段的首地址是：142F142F:0003 8ED8 MOV DS,AX142F:0005 B80000 MOV AX,0000142F:0008 B96400 MOV CX,0064142F:000B 03C1 ADD AX,CX142F:000D E2FC LOOP 000B142F:000F A30000 MOV 0000,AX142F:0012 B44C MOV AH,4C142F:0014 CD21 INT 21142F:0016 06 PUSH ES142F:0017 3E DS:142F:0018 8B16083E MOV DX,3E08142F:001C 26 ES:142F:001D 894706 MOV BX+06,AX2）、从上一步结果中找到数据段的首地址142E，查看里面存储的数据，数据段从首地址142E中没有存储：-d 142E:0000142E:0000 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .142E:0010 B8 2E 14 8E D8 B8 00 00-B9 64 00 03 C1 E2 FC A3 .d.142E:0020 00 00 B4 4C CD 21 06 3E-8B 16 08 3E 26 89 47 06 .L.!.&.G.142E:0030 26 89 57 08 B8 FF FF 5E-8B E5 5D C3 55 8B EC 83 &.W.U.142E:0040 EC 02 57 56 8B 76 04 8A-04 2A E4 8B F8 03 FE 80 .WV.v.*.142E:0050 7E 06 40 72 11 80 7D FF-80 72 0B 8A 5D FF 2A FF .r.r.*.142E:0060 38 A7 BA 42 75 1D 8A 05-38 46 06 74 26 EB 2D 90 8.Bu.8F.t&.-.142E:0070 46 80 7C FF 80 72 0D 46-8A 5C FF 2A FF 38 BF BA F.|.r.F.*.8.3）、从反汇编地址中找到把数据段的首地址142E传给寄存器AX的指令地址:0005，用G命令执行到地址0005-g0005AX=142E BX=0000 CX=0026 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0005 NV UP EI PL NZ NA PO NC142F:0005 B80000 MOV AX,0000然后用T命令单步执行，看寄存器AX,DS,ES的内容的变化-tAX=0000 BX=0000 CX=0026 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0008 NV UP EI PL NZ NA PO NC142F:0008 B96400 MOV CX,0064-tAX=0000 BX=0000 CX=0064 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=000B NV UP EI PL NZ NA PO NC142F:000B 03C1 ADD AX,CX-tAX=0064 BX=0000 CX=0064 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=000D NV UP EI PL NZ NA PO NC142F:000D E2FC LOOP 000B-tAX=0064 BX=0000 CX=0063 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=000B NV UP EI PL NZ NA PO NC142F:000B 03C1 ADD AX,CXAX=00C7 BX=0000 CX=0063 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=000D NV UP EI PL NZ NA PO NC142F:000D E2FC LOOP 000B-tAX=00C7 BX=0000 CX=0062 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=000B NV UP EI PL NZ NA PO NC142F:000B 03C1 ADD AX,CX4）然后直接G命令运行完毕。-gProgram terminated normally4、运行 2-1.exe，完全执行程序，最后再查看数据段最后的结果:-d 142E:0,f142E:0000 BA 13 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .-Q（2）1、编译: C:masm 2-2.asmC:masmmasm 2-2Microsoft (R) Macro Assembler Version 5.00Copyright (C) Microsoft Corp 1981-1985, 1987. All rights reserved.Object filename 2-2.OBJ:Source listing NUL.LST:Cross-reference NUL.CRF: 50390 + 415114 Bytes symbol space free 0 Warning Errors 0 Severe ErrorsC:masm2、链接: c:link 2-2.objC:masmlink 2-2Microsoft (R) Overlay Linker Version 3.65Copyright (C) Microsoft Corp 1983-1988. All rights reserved.Run File 2-2.EXE:List File NUL.MAP:Libraries .LIB:LINK : warning L4021: no stack segmentC:masm3、调试: c:debug 2-2.exe1）、先用命令U反汇编整个程序，查看每条指令的物理地址，其显示内容的含义为：内存地址 指令代码 反汇编的程序代码C:masmdebug 2-2.exe-u142F:0000 B82E14 MOV AX,142E数据段的首地:142E代码段的首地址:142F142F:0003 8ED8 MOV DS,AX142F:0005 B80000 MOV AX,0000142F:0008 C70600000100 MOV WORD PTR 0000,0001142F:000E C70602000000 MOV WORD PTR 0002,0000142F:0014 813E0000C800 CMP WORD PTR 0000,00C8142F:001A 7715 JA 0031142F:001C A10000 MOV AX,0000142F:001F 8BD8 MOV BX,AX2）、从上一步结果中找到数据段的首地址142E，查看里面存储的数据，数据段从首地址142E开始没有存储-d 142E:0000142E:0000 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .142E:0010 B8 2E 14 8E D8 B8 00 00-C7 06 00 00 01 00 C7 06 .142E:0020 02 00 00 00 81 3E 00 00-C8 00 77 15 A1 00 00 8B .w.142E:0030 D8 05 01 00 F7 E3 01 06-02 00 83 06 00 00 01 EB .142E:0040 E3 8D 16 02 00 B4 02 CD-21 B4 4C CD 21 03 FE 80 .!.L.!.142E:0050 7E 06 40 72 11 80 7D FF-80 72 0B 8A 5D FF 2A FF .r.r.*.142E:0060 38 A7 BA 42 75 1D 8A 05-38 46 06 74 26 EB 2D 90 8.Bu.8F.t&.-.142E:0070 46 80 7C FF 80 72 0D 46-8A 5C FF 2A FF 38 BF BA F.|.r.F.*.8. 3）、从反汇编地址中找到把数据段的首地址142E传给寄存器AX的指令地址:0005，用G命令执行到地址0005-g005AX=142E BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0005 NV UP EI PL NZ NA PO NC142F:0005 B80000 MOV AX,0000用T命令单步执行，看寄存器AX,DS,ES的内容的变化-tAX=0000 BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0008 NV UP EI PL NZ NA PO NC142F:0008 C70600000100 MOV WORD PTR 0000,0001 DS:0000=0000-tAX=0000 BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=000E NV UP EI PL NZ NA PO NC142F:000E C70602000000 MOV WORD PTR 0002,0000 DS:0002=0000-tAX=0000 BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0014 NV UP EI PL NZ NA PO NC142F:0014 813E0000C800 CMP WORD PTR 0000,00C8 DS:0000=0001-tAX=0000 BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=001A NV UP EI NG NZ AC PE CY142F:001A 7715 JA 0031-tAX=0000 BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=001C NV UP EI NG NZ AC PE CY142F:001C A10000 MOV AX,0000 DS:0000=00014）然后直接G命令运行完毕-gpProgram terminated normall-r;用R命令查看一下各个寄存器的内容:-rAX=0000 BX=0000 CX=004D DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=001C NV UP EI NG NZ AC PE CY142F:001C A10000 MOV AX,0000 DS:0000=00C9 4、运行 2-2.exe，完全执行程序，最后再查看数据段最后的结果:-d 142E:0,f142E:0000 C9 00 70 4D 00 00 00 00-00 00 00 00 00 00 00 00 .pM.-Q（3）1、编译:C:masm 2-3.asmC:masmmasm 2-3Microsoft (R) Macro Assembler Version 5.00Copyright (C) Microsoft Corp 1981-1985, 1987. All rights reserved.Object filename 2-3.OBJ:Source listing NUL.LST:Cross-reference NUL.CRF: 50390 + 415114 Bytes symbol space free 0 Warning Errors 0 Severe ErrorsC:masm 2、链接: c:link 2-3.objC:masmlink 2-3Microsoft (R) Overlay Linker Version 3.65Copyright (C) Microsoft Corp 1983-1988. All rights reserved.Run File 2-3.EXE:List File NUL.MAP:Libraries .LIB:LINK : warning L4021: no stack segment 3、调试: c:debug 2-3.exe1）、先用命令U反汇编整个程序，查看每条指令的物理地址，其显示内容的含义为：内存地址 指令代码 反汇编的程序代码C:masmdebug 2-3.exe-u142F:0000 B82E14 MOV AX,142E数据段的首地:142E代码段的首地址:142F142F:0003 8ED8 MOV DS,AX142F:0005 C70602000000 MOV WORD PTR 0002,0000142F:000B C70600000000 MOV WORD PTR 0000,0000142F:0011 B90100 MOV CX,0001142F:0014 BB0000 MOV BX,0000142F:0017 8BC1 MOV AX,CX142F:0019 F7E1 MUL CX142F:001B 03D8 ADD BX,AX142F:001D FF060000 INC WORD PTR 0000-2）、从上一步结果中找到数据段的首地址142E，查看里面存储的数据，数据段从首地址142E开始没有存储：-d 142E:0000142E:0000 00 00 00 00 00 00 00 00-00 00 00 00 00 00 00 00 .142E:0010 B8 2E 14 8E D8 C7 06 02-00 00 00 C7 06 00 00 00 .142E:0020 00 B9 01 00 BB 00 00 8B-C1 F7 E1 03 D8 FF 06 00 .142E:0030 00 83 3E 00 00 05 74 0B-81 FB E8 03 77 0B 83 C1 .t.w.142E:0040 01 EB E4 89 1E 02 00 EB-DE 89 0E 00 00 B4 4C CD .L.142E:0050 21 06 40 72 11 80 7D FF-80 72 0B 8A 5D FF 2A FF !.r.r.*.142E:0060 38 A7 BA 42 75 1D 8A 05-38 46 06 74 26 EB 2D 90 8.Bu.8F.t&.-.142E:0070 46 80 7C FF 80 72 0D 46-8A 5C FF 2A FF 38 BF BA F.|.r.F.*.8.3）、从反汇编地址中找到把数据段的首地址142E传给寄存器AX的指令地址:0005，用G命令执行到地址0005 -g0005AX=142E BX=0000 CX=0051 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0005 NV UP EI PL NZ NA PO NC142F:0005 C70602000000 MOV WORD PTR 0002,0000 DS:0002=0000然后用T命令单步执行，看寄存器AX,DS,ES的内容的变化-tAX=142E BX=0000 CX=0051 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=000B NV UP EI PL NZ NA PO NC142F:000B C70600000000 MOV WORD PTR 0000,0000 DS:0000=0000-tAX=142E BX=0000 CX=0051 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0011 NV UP EI PL NZ NA PO NC142F:0011 B90100 MOV CX,0001-tAX=142E BX=0000 CX=0001 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0014 NV UP EI PL NZ NA PO NC142F:0014 BB0000 MOV BX,0000-tAX=142E BX=0000 CX=0001 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0017 NV UP EI PL NZ NA PO NC142F:0017 8BC1 MOV AX,CX-tAX=0001 BX=0000 CX=0001 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=0019 NV UP EI PL NZ NA PO NC142F:0019 F7E1 MUL CX-tAX=0001 BX=0000 CX=0001 DX=0000 SP=0000 BP=0000 SI=0000 DI=0000DS=142E ES=141E SS=142E CS=142F IP=001B NV UP EI PL NZ NA PO NC142F:001B 03D8 ADD BX,AX4)然后直接G命令运行完毕-gProgram term