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Hi There!
I've written a little perl script to extract some useful information from the .map file. The script tells you how much space in flash is used by each function in your code. The size is in bytes followed by the percentage of the total 32k available. The list is ordered with the biggest ...
Hi There!
I've written a little perl script to extract some useful information from the .map file. The script tells you how much space in flash is used by each function in your code. The size is in bytes followed by the percentage of the total 32k available. The list is ordered with the biggest functions first.
Instructions:
1. Get perl. If you're using Windows, you can download perl from:
http://www.activestate.com/Products/ActivePerl/
2. Make a .map file. From MPLAB select Project->Build Options->Project.
Under the "MPLINK Linker" tab, check the box labled "Generate map file"
This will create a new .map file every time you compile your code.
3. Compile your code. Sorry the script won't work unless you can compile and link successfully.
4. Copy the script file "codesize.pl" to your FrcCode directory and run it like so:
perl codesize.pl
5. Enjoy!
If you've renamed your project for some reason, the .map file can also be specified as a parameter like so:
perl codesize.pl AwsomeCodeProject.map
BONUS!!!!!!!!
You can also import your results into Microsoft Excel with the bonus -csv switch. Use it like so:
perl codesize.pl -csv > NiftySpreadsheet.csv
Questions, comments or compliments? Let me know:
tedhansen@team1216.com
Attached Files
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Handy script to examine the size of your code
1134594805codesize.zip
download file
uploaded: 14-12-2005 16:13
filetype: zip
filesize: 1.71kb
downloads: 232
Discussion
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23-12-2005 00:05
prograid
Re: White Paper Discuss: Handy script to examine the size of your code
Hi, I'm having a few problems with this script.
When I tried using the script the first two lines were as follows.
Unused Memory 28651 bytes 93.3% vfprintf() 3062 bytes 10.0% vfprintf.c
I have a feeling that my code is actually larger than the maximum possible size and somehow this is affecting the result.
Thanks.
25-12-2005 23:19
kc8nod
Re: White Paper Discuss: Handy script to examine the size of your code
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Originally Posted by prograid
I have a feeling that my code is actually larger than the maximum possible size and somehow this is affecting the result.
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27-12-2005 19:52
prograid
Re: White Paper Discuss: Handy script to examine the size of your code
Thanks for replying.
By the way, I don't think this should make a difference but the script is being run as a post-build command from within eclipse.
The mapfile is in the attachment in the FRCMapfile.zip archive because the forum does not allow text file attachments of greater than 100kb.
Thanks.
03-01-2006 11:03
kc8nod
Re: White Paper Discuss: Handy script to examine the size of your code
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Originally Posted by prograid
...the script is being run as a post-build command from within eclipse.
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I'm guessing that you are doing something clever with your linker script and that is confusing the codsize script. Are you even using the linker script? I can only imagine what hacks you have had to perpetrate to make mcc18 work under Eclipse. Anyway, from your mapfile:
Program Memory Usage
Start End
--------- ---------
0x000800 0x000814
0x000818 0x0063a0
0x300000 0x30000d
23468 out of 33816 program addresses used, program memory utilization is 69%
At any rate, the bug is indeed in my script. I'll think about this a bit more and post a fix in a day or two.
03-01-2006 11:20
kc8nod
Re: White Paper Discuss: Handy script to examine the size of your code
BTW, here's the proper output from the .map file you posted.
06-01-2006 19:50
prograid
Re: White Paper Discuss: Handy script to examine the size of your code
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Originally Posted by kc8nod
Sorry for the slow response, I've been offline last week.
I'm guessing that you are doing something clever with your linker script and that is confusing the codsize script. Are you even using the linker script? I can only imagine what hacks you have had to perpetrate to make mcc18 work under Eclipse. |
This is the command I run in order to run your script:
perl "..codesize.pl" "FRCMapfile.map"
EDIT:
I tried running your script from within the plain old windows command line after copying the mapfile into the same directory as your script and the .lkr file (and run this command: perl codesize.pl FRCMapfile.map), but still get the same output. I'm using ActivePerl 5.87 Build 815 on Windows XP just for your info.
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