incorrect stack view in CCS v6 debugger on AM437x

Quan Nguyen20

Other Parts Discussed in Thread: SYSBIOS

Hi,

I am debugging a SYSBIOS application on AM437x and occasionally debugger shows on stack variables incorrectly. The variables in memory are fine and the code executes correctly, however debugger shows the wrong thing. In examining the stack it looks like debugger erroneously shift the stack pointer address by 4 bytes and presents the incorrect data. What can cause this and how it can be fixed?

Thanks,

over 11 years ago

0 Ki over 11 years ago

TI__Guru**** 482841 points

Hello,
Which compiler are you using? TI or GCC?

Thanks
ki

0 Quan Nguyen20 over 11 years ago in reply to Ki

Prodigy 30 points

GCC: GNU v4.8.4 Linaro

0 Ki over 11 years ago in reply to Quan Nguyen20

TI__Guru**** 482841 points

Are you building with DWARF3+? There is one known issue with how the CCS debugger handles DWARF3/4 symbols from GCC. Could you try rebuilding with DWARF2 and see if that helps?

Thanks
ki

0 Quan Nguyen20 over 11 years ago in reply to Ki

Prodigy 30 points

Hi Ki-Soo Lee,

Yes this is the case, we are able to see proper values when building with DWARF2 - thank you!

Could I inquire on what is the issue when building with 3/4 and when we might be able to see a fix (if a fix is planned)?

Quan.

0 Ki over 11 years ago in reply to Quan Nguyen20

TI__Guru**** 482841 points

Good to hear. Thanks for the update.

The issue is with the DWARF parser in CCS not handling some of the new DWARF tags introduced in DWARF3+. A fix is already in place and will be available in the next CCS update (6.1.1), which is scheduled end of July.

Thanks
ki

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incorrect stack view in CCS v6 debugger on AM437x