complete masm installation guide

8/13/2019 Complete Masm Installation Guide

1/21

1. Download masm from http://www.masm32.com/

2. Unzip the package and run install.exe
http://www.masm32.com/http://www.masm32.com/


2/21

3. Set the path to the compiler. pen !"# computer$% rightclick and select !&roperties$. Select !'d(anced$ )*!+n(ironment (aria,les$)*$&ath$. -lick !+dit$ and add!c:masm32,in$ to the path


3/21

0. -heck the installation ,# opening the command promptwindowStart)*un)*cmd


4/21

and t#ping "4 at the command prompt

5. Download 16),it (ersion of the link.exe from the"icrosoft7s we,site

http://download.microsoft.com/download/(c15/Update/1/89;


5/21

6. Download -ode ?iew De,ugger

http://kipir(ine.com/asm/5th/c(/c(01patch.exe

Unzip all files to c:masm32,in

@. ow #ou can use almost an# text editor to create anassem,l# program. 9n this example% we will use "icrosoft7s+D9A. A#pe !edit example1.asm$ on the command promptand enter the text of the program.

Sa(e the file ,# !'lt)B$%$'ltCS$. +xit !'lt)B$%!'lt)$


6/21

;. ow lets start and configure the -ode ?iew de,ugger.A#pe !c( example1.exe7 at the command prompt.

+nter !'lt)8$ and make sure that #ou ha(e the followingwindows on the screen:

- -ode 1

- egisters

- "emor# 1

&ress !'lt)B5$ to arrange the windows on the screen.


7/21

ow lets set the options. !'lt)$ )* &references. Set theoptions as shown and click !ok$.


8/21

'gain% !'lt)$ )* !Source 1 window$

!'lt)$ ) *$"emor# 1 window$


9/21

Ahe configuration is now complete.

1F. 4ets look at the program.


10/21


11/21


12/21

11. ow lets step through the program and o,ser(eexecution of each instruction.

- &ress !B1F$.

- Ahe de,ugger will show execution of the first line of

the prolog.

- &ress !B1F$ until instruction !"? '%F$ ishighlighted. Ahis is the first instruction of #ourprogram.


13/21

,ser(e the (alue in the register +'. egister 'contains num,er F;DBG.


14/21

ow press !B1F$. Ahe de,ugger will execute thehighlighted instruction.

ote the change in the content of +' and the fact that theregister has ,een highlighted ,# the de,ugger% indicatingthe change.

Ahe highlighting the code window mo(ed to the nextinstruction.

ote that the line of the source code !"? '4% ?'1$

,ecame!"? '4% HFFF-I where FFF-G is the actual offset of ?'1in the data segment. >ou can check that this is true ,#checking the content of memor# location DS:FFF-G in thedata window.


15/21

ow execute this instruction ,# pressing !B1F$. -ontent ofthe register '4 changed% taking the (alue from the ?'1.

Ahe next instruction is !"? =% BBS+A ?'2$. ?'2follows ?'1 in memor# and has offset of FFFDG. Ahis isthe (alue that will ,e placed into the = upon execution ofthis instruction. &ress !B1F$ to execute.


16/21

Ahe following instruction !"? H=I% '4$ will cop# thecontent of '4 into the memor# location pointed ,# =within the data segment. 'fter the pre(ious instruction =contains the offset of the first ,#te of ?'2 or FFFDG. Ahatis where the data from '4 will appear. &ress !B1F$ to

execute.

ote the de,ugger also highlighted changes in the datawindow.


17/21

9nstruction !"? H=C1I% '4$ will cop# the content of theregister '4 into the memor# location with offset eJualwhate(er the num,er is in = plus 1. 9n our case=KFFFDG% then the offset is FFFDGCFFF1GKFFF+G. Ahat isthe second ,#te of the ?'2. &ress !B1F$ to execute. ote

the change in the memor# content.


18/21

9nstruction !"? +'% 123056@


19/21

Ahe instruction !"? ?'3% +'$ ,ecame!"? D8D &A HFFFBI% +'$.

?'3 has ,een replaced ,# the actual offset FFFBG of?'3 in the data memor#. Ahis instruction will take thecontent of the +' and place into the four consecuti(e,#tes of memor# a 32),it (aria,le starting with the offsetFFFBG. &ress !B1F$ to execute.

Ahat was the last instruction of the user program. Aheremaining instructions are generated ,# the .+9A directi(e

and ser(e to terminate the program. &ress !B1F$ until theprocess terminates.


20/21

Still not clear how to work with the -ode?iew de,uggerL

Gere is additional tutorials #ou can go through.

-ode?iew tutorial

http://www.nu(isionmiami.com/,ooks/asm/c(/index.htm

De,ugging

http://www.math.uaa.alaska.edu/MafkNm/cs221/handouts/de

,ugging.pdf
http://www.nuvisionmiami.com/books/asm/cv/index.htmhttp://www.math.uaa.alaska.edu/~afkjm/cs221/handouts/debugging.pdfhttp://www.math.uaa.alaska.edu/~afkjm/cs221/handouts/debugging.pdfhttp://www.nuvisionmiami.com/books/asm/cv/index.htmhttp://www.math.uaa.alaska.edu/~afkjm/cs221/handouts/debugging.pdfhttp://www.math.uaa.alaska.edu/~afkjm/cs221/handouts/debugging.pdf


21/21

complete masm installation guide

Documents