TMS320F28P650SK: Functions written for the CLA, do not comply to the RETAIN attribute

Alex Bucur

Part Number: TMS320F28P650SK

Tool/software:

I want to keep some functions compiled even if I will not be referencing them in the main CLA code.

Functions written for the C28x can be given the attribute RETAIN will always be kept inside the memory map. My problem is that when I'm doing this for functions inside a .cla file, they are being excluded from the built project.

The functions I'm using:

* I tried both #pragma and __attribute__ method

* The optimization level is OFF

* The functions above are written inside a .cla file
* I also tried with the attribute "used" and it still doesn't work

Is there a way to force the CLA compiler to keep functions even if they are not referenced anywhere?

Thank you in advance for any help you can offer!

over 1 year ago

0 Delaney Woodward over 1 year ago

TI__Mastermind 21490 points

Hi Alex,

The CLA should be able to accept the c28x RETAIN pragma, so this shouldn't be the case. Just to clarify, how are you verifying that the functions are being excluded from the build? Can you check if they are present in the .map file?

Best Regards,

Delaney

0 Alex Bucur over 1 year ago in reply to Delaney Woodward

Prodigy 20 points

Yes, I verified the .map file, and the functions given as example are not included.

0 Alex Bucur over 1 year ago in reply to Alex Bucur

Prodigy 20 points

Aditional information that I think could be usefull:
- I'm building this project in EABI format

The assembly generated contains the ".clink" attribute which, from the TMS320C28x Optimizing C Cpp Compiler, I understand that, only in COFF mode, sets it so that a section is eligible for removal during conditional linking.
I also compiled this project in COFF, that ".clink" is still generated, and my function can't be found inside the .map file

0 Delaney Woodward over 1 year ago in reply to Alex Bucur

TI__Mastermind 21490 points

Hi Alex,

Thank you for the information. I will look into this and get back to you.

Best Regards,

Delaney

0 Delaney Woodward over 1 year ago in reply to Delaney Woodward

TI__Mastermind 21490 points

Hi Alex,

A few more clarifying questions:

Are you seeing any warnings (or outputs related to these functions) in the console when you build the project?

Are you using the most recent version of the c28x compiler (22.6.1.LTS)?

Best Regards,

Delaney

0 Alex Bucur over 1 year ago in reply to Delaney Woodward

Prodigy 20 points

Delaney Woodward said:
Are you seeing any warnings (or outputs related to these functions) in the console when you build the project?

No, the compiler builds the project with 0 errors

Delaney Woodward said:
Are you using the most recent version of the c28x compiler (22.6.1.LTS)?

Yes I'm using the newest compiler version.

+1 George Mock over 1 year ago in reply to Alex Bucur

TI__Guru**** 251580 points

Thank you for notifying us of this problem. I can reproduce the same behavior. I filed EXT_EP-11794 to have this investigated. You are welcome to follow it with that link.

Thanks and regards,

-George

0 Alex Bucur over 1 year ago in reply to George Mock

Prodigy 20 points

I understand, I hope this problem can be solved as fast as possible.

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TMS320F28P650SK: Functions written for the CLA, do not comply to the RETAIN attribute