TMS320F280049: About register protections during CLA tasks execution

Hi,

Do you mean the CLA core registers or peripheral registers?

Regards,

Veena

Hello Veena,

Thank you for following up. I mean the CLA core registers. For a scenario, I am using task 8 as background task. If any other task (1~7) interrupt the background task 8, will calculation results or status of task 8 (prior to the interrupt) will be automatically stored in CLA core registers or somewhere else? Will those parameters will be automatically restored after the interruption complete. Or, it has to be manually operate (store/load).  In this case, do you have any example? Thank you.

Best regards,

Pengyuan

Hello Veena,

Thank you for the information. I am trying to understand precisely. So assuming that I enable the CLA background task in settings, the temporary information in registers used by task 8 (background task) will be automatically stored and restored when other tasks (1~7) interrupt the task 8 or complete the executions. Is that correct? Thank you again.

Best regards,

Pengyuan 

Hello Veena,

Thank you for the information. I am trying to understand precisely. So assuming that I enable the CLA background task in settings, the temporary information in registers used by task 8 (background task) will be automatically stored and restored when other tasks (1~7) interrupt the task 8 or complete the executions. Is that correct? Thank you again.

Best regards,

Pengyuan 

Hello Veena,

Thank you so much for the confirmation.

Best regards,

Pengyuan

Hello Kamath,

May I have another question? Is there any disassembly code/examples can show what happens when the CLA restores resistors used by task8 after the interrupt (task1~7 for example) is completed. Just try to understand the mechanism since the CLA does not have stack. Thank you so much.

Best regards,

Pengyuan

Hi,

You can enable the following compiler flag which will retain the generated assembly file in the build folder

You may find the .asm file corresponding to every .c and .cla file

CLA tasks also has stack and is part of scratchpad section

Regards,

Veena