Fill Linker Output With 0xFF

John Aggers

Our standard is to fill unused code space with 0xFF. Under the Code Composer Studio v4 project properties for C/C++ Build, under Tool Settings, under MSP430 Linker I found "Runtime Environment" which had "Default fill value for holes in output sections (--fill_value, -f)" and thought this is what I need, but it doesn't work or I don't understand how it works. I placed a 0xFF in the field recompiled and linked and it did NOT fill open space with 0xFF. I also tried 255, but that did not work. I thought maybe I had to add the '-f", but then the linker complained the value was negative.

We are creating an Intel Hex output. When I look at the resultant output it does not contain 0xFF fill.

What am I doing wrong?

Thanks

John Aggers

Emerson Climate Technologies

770-425-2724

over 14 years ago

0 George Mock over 14 years ago

TI__Guru**** 244300 points

That option only tells the linker to fill gaps in output sections. That's not what you want. You want to use the fill feature in the MEMORY directive of your linker command file. Read about that in the MSP430 Assembly Tools book.

Thanks and regards,

-George

Code Composer Studio™︎

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Fill Linker Output With 0xFF