Solved

.equ Statements with GNU Assembler

Posted on 2006-11-14
3
1,915 Views
Last Modified: 2008-01-09
    I'm using GAWK to automate the conversion of lots of assembly language source files written for the Phar386 assembler to they can be recompiled with the GNU assembler.  So far, things are generally going fine!
     I have three statements that have been encountered that I'm researching how to convert from Phar386 to GNU:

ml_variable_scrn  EQU      "000,000,192,240"       ;these are the Phar386 versions
ml_adv_msg_scrn   EQU      "000,240,192,016"
ml_fixed_scrn     EQU      "000,256,192,064"

.equ      ml_variable_scrn,"000,000,192,240"     ;these are the same lines after the automated tool conversion
.equ      ml_adv_msg_scrn,"000,240,192,016"           
.equ      ml_fixed_scrn,"000,256,192,064"       

When the second set of lines are compiled using the GNU Assembler, each of the three lines produces these two warnings:
     "Error: bad expression"
     "Error: junk at end of line, first unrecognized character is '0'

How to convert the first set of three lines so that will peform correctly when compiled with the GNU Assembler?

Quick and good answers are needed and will be highly appreciated!
How can the
0
Comment
Question by:apx_31088
  • 2
3 Comments
 
LVL 11

Expert Comment

by:dimitry
ID: 17947531
I think this is because of "string"...
I would suggest to use next trick:
1) Rename your file from myfile.s to myfile.S
2) Change lines to
#define ml_variable_scrn    "000,000,192,240"
#define ml_adv_msg_scrn  "000,240,192,016"          
#define ml_fixed_scrn        "000,256,192,064"
3) Compile myfile.S with gcc, so gcc will take care of #define stuff...

If it will not work then you'll need to show us how these defines are used in code so we will help you to convert it to gnu assembler.
0
 

Author Comment

by:apx_31088
ID: 17958109
dimitry,

     These three .equ statements are part of an assembly language file that contains nothing but about 300 .equ statements.  These three statements are the only .equ statements that contain data within quotations ("000,000,192,240", etc).  The rest of the .equ statements are in the form:

.equ      ml_sline_24,131
.equ      ml_sline_25,123
.equ      ml_sline_26,115

     A coworker had earlier mentioned mentioned using gcc to pre-process the literal string assignments in the manner that you'd written about.  What is an example of an assembly source file that contains both the #define statements and also contains assembly language statements?  What are the steps needed to process that assembly source file so that it is processed by both gcc and as?
0
 
LVL 11

Accepted Solution

by:
dimitry earned 500 total points
ID: 17958481
I've already written that you need to rename myfile.s to myfile.S
And just use gcc instead of as. as flags you can pass by -Wa,special_as_flags.
The only problem you can face is other .equ will not be accepted by gcc. Then use #define...
0

Featured Post

PRTG Network Monitor: Intuitive Network Monitoring

Network Monitoring is essential to ensure that computer systems and network devices are running. Use PRTG to monitor LANs, servers, websites, applications and devices, bandwidth, virtual environments, remote systems, IoT, and many more. PRTG is easy to set up & use.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
FSM's, Flow Charts or Something else 5 371
Application Trololo: "Do you want to GPF?" 4 536
Software clock vs system clock confusion 12 463
File Not Found Exception 12 112
Do you use a spreadsheet like Microsoft's Excel?  Have you ever wanted to link out to a non excel file on your computer or network drive?  This is the way I found to do it!
As a business owner, there are many things that keep you up at night. Profit margins, employee retention, human resource protocols, whether your product or service will remain competitive. When you own or manage a technology company that operates la…
This Micro Tutorial will teach you how to censor certain areas of your screen. The example in this video will show a little boy's face being blurred. This will be demonstrated using Adobe Premiere Pro CS6.
Microsoft Active Directory, the widely used IT infrastructure, is known for its high risk of credential theft. The best way to test your Active Directory’s vulnerabilities to pass-the-ticket, pass-the-hash, privilege escalation, and malware attacks …

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question