CSCI 3 6 0 Assignment 5 Disassembly and Decoding 5 0 points Below is an assembled program and its storage Disassemble the program by decoding the instructions and turning them back into source code Type what you have disassembled into a member of your PDSE named ASSIGN 5 and be sure that it runs successfully and produces the same exact assembled program as shown below under the heading Here is the assembled program that you need to disassemble and decode Here is the program with the instructions left out CSCI 3 6 0 ASSIGNMENT 5 current semester DISASSEMBLY DECODING DEVELOPER NAME your name goes here DUE DATE assignment due date goes here FILL IN CURRENT SEMESTER, DEVELOPER NAME AND DUE DATE ASSIGN 5 CSECT USING ASSIGN 5 , 1 5 ESTABLISH ADDRESSABILITY ON REG 1 5 YOUR DISASSEMBLED PROGRAM CODE GOES HERE LTORG LITERAL ORGANIZATION YOUR DISASSEMBLED STORAGE DECLARATIONS GO HERE END ASSIGN 5 Here is the assembled program that you need to disassemble and decode 0 0 0 0 0 0 4 1 4 0 0 0 1 7 5 8 5 0 F 0 3 C 1 8 2 4 1 A 2 5 5 0 2 0 F 0 4 0 1 8 7 5 1 8 6 4 1 C 6 6 5 0 7 0 F 0 4 4 1 8 9 4 5 C 4 0 F 0 5 0 0 0 0 0 2 0 1 D 4 9 5 0 4 0 F 0 4 8 5 0 5 0 F 0 4 CE 0 6 0 F 0 0 0 0 0 5 4 0 7 FEF 5 F 5 F 5 F 5 F 5 F 5 F 5 F 5 F 5 F 5 0 0 0 0 0 0 6 5 0 0 0 0 4 0 0 0 0 0 0 0 7 C 0 0 0 0 0 9 1 3 0 0 0 0 0 0 0 9 0 0 0 0 0 0 0 4 0 0 0 0 0 0 0 1 F 5 F 5 F 5 F 5 F 5 F 5 F 5 F 5 0 0 0 0 0 0 0 0 Note that the next to the last instruction is XDUMP ASSIGN 5 , 8 4 and its operation code is E 0 You will need to include this XDUMP in your own program to check that your program storage is exactly the same as the above assembled program The register contents are not dumped but you should not need them to complete this assignment You will have to decode instructions with explicit addressing as you do not know the names of the variables To clarify, you will disassemble what you see in the assembled program provided above, you will type the decoded instructions into the program shell provided above and then, finally, you will run the program to be sure that it assembles correctly and that your XDUMP'd program storage matches the assembled program provided above EXACTLY

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CSCI 3 6 0 Assignment 5 : Disassembly and Decoding 5 0 points Below is an assembled program and its storage. Disassemble the program by

CSCI

360

Assignment

5

: Disassembly and Decoding

50

points Below is an assembled program and its storage. Disassemble the program by decoding the instructions and turning them back into source code. Type what you have disassembled into a member of your PDSE named ASSIGN

5

and be sure that it runs successfully and produces the same exact assembled program as shown below under the heading: Here is the assembled program that you need to disassemble and decode:. Here is the program with the instructions left out:

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

CSCI

360

ASSIGNMENT

5

current semester

* *

DISASSEMBLY & DECODING

* * * *

DEVELOPER NAME: your name goes here

* *

DUE DATE: assignment due date goes here

* * * *

FILL IN CURRENT SEMESTER, DEVELOPER NAME AND DUE DATE.

* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

ASSIGN

5

CSECT USING ASSIGN

5, 15

ESTABLISH ADDRESSABILITY ON REG

15 *

YOUR "DISASSEMBLED" PROGRAM CODE GOES HERE

*

LTORG LITERAL ORGANIZATION

*

YOUR "DISASSEMBLED" STORAGE DECLARATIONS GO HERE

*

END ASSIGN

5

Here is the assembled program that you need to disassemble and decode:

000000 41400017 5850

03

18241

25 5020

040 18751864 1

665070

0441894 5

40

050 000020 1

495040

0485050

04

060

0000054 07

FEF

5

5

5

5

5

5

5

5

5

5 00000065 000040 0000007

00000913 00000009 00000004 00000001

5

5

5

5

5

5

5

5 00000000

Note that the next to the last instruction is: XDUMP ASSIGN

5, 84

and its operation code is E

0 .

You will need to include this XDUMP in your own program to check that your program storage is exactly the same as the above assembled program. The register contents are not dumped but you should not need them to complete this assignment. You will have to decode instructions with explicit addressing as you do not know the names of the variables. To clarify, you will disassemble what you see in the assembled program provided above, you will type the decoded instructions into the program shell provided above and then, finally, you will run the program to be sure that it assembles correctly and that your XDUMP'd program storage matches the assembled program provided above EXACTLY.