CCSTUDIO: Code Composer Studio 12 showing incorrect MSP430 mnemonics in Disassembly View

chan loo hoe

Prodigy 20 points

Part Number: CCSTUDIO
MSP430F6749A

Tool/software:

Code Composer Studio v12.8.1.00005

Version: 12.8.0.202407141830
Build id: N202407141830

Compiler version: TI v20.2.5.LTS [TI v21.6.1.LTS]

The Disassembly view seems to be showing the wrong instruction mnemonics, eg.

_c_int00_noargs():
00c600: 0081 .word 0x0081
00c602: 5DC0 13B2 ADD.B R13,0xd9b6
111 if(_system_pre_init() != 0)
00c606: F6E8 930C AND.B @R6,0x930c(R8)
00c60a: 2402 JEQ ($C$L2)
114 _auto_init();
00c60c: 13B2 .word 0x13B2
00c60e: CFB8 430C BIC.W @R15+,0x430c(R8)
123 main(0);
00c612: 13B2 .word 0x13B2
00c614: D36C BIS.B #2,R12
125 exit(1);
00c616: 431C MOV.W #1,R12
00c618: 13B3 .word 0x13B3
00c61a: 1EF0 .word 0x1EF0

The above code as displayed in the Disassembly view, is from boot.c. Why is '0081' not displayed as 'MOVA __STACK_END, SP'? The next line '5DC0 13B2' should be decoded as 'CALLA #_system_pre_init'. And so on.

It seems the only correct instruction decoded is '00c616: 431C MOV.W #1.R12'

Why is the disassembly so different?

Is there any setting that could cause this incorrect display?

1 month ago

0 Ki 1 month ago

TI__Guru**** 451431 points

Thanks for reporting this. It looks like a clear bug. I can reproduce this with CCS 20. CCS 12.x appears to work correctly.

I filed a bug for this. Tracking ID: https://sir.ext.ti.com/jira/browse/EXT_EP-12237

Thanks

0 Ki 1 month ago

TI__Guru**** 451431 points

Actually, I just re-read your post and saw:

chan loo hoe said:
Code Composer Studio v12.8.1.00005

I thought you were referring to CCS 20, where I see a similar issue.

CCS 12.8.1 looks fine to me. Here is a screenshot from CCS 12.8.1:

Which exact device are you using?

0 chan loo hoe 1 month ago in reply to Ki

Prodigy 20 points

Yes, i'm definitely using version CCS 12.8.1.00005 as per your screenshot. But the code i posted is what appeared on the disassembly view, unlke your screenshot. Definitely decoded incorrectly.

I'm not sure why it happens on my end. When i have time i may create a new project and/or re-install the CCS. Perhaps there is some cache settings that need to be cleared. or something...

Thanks.

0 Ki 1 month ago in reply to chan loo hoe

TI__Guru**** 451431 points

Which exact MSP430 device are you using?

0 chan loo hoe 1 month ago

Prodigy 20 points

chan loo hoe said:
Part Number: CCSTUDIO
MSP430F6749A

+1 Ki 1 month ago in reply to chan loo hoe

TI__Guru**** 451431 points

I don't have this particular device but I tried with another and still had no issues. I'm not sure what is the issue on your end.

Can you try cleaning your environment? Try steps 9.4.2 and 9.4.3 of:

https://software-dl.ti.com/ccs/esd/documents/users_guide_12.8.0/ccs_troubleshooting.html#general-ide

And 9.7.3, 9.7.4, 9.7.5 of:

https://software-dl.ti.com/ccs/esd/documents/users_guide_12.8.0/ccs_troubleshooting.html#general-ide

If the above has no impact, please send me the build options used to build your project. Maybe you can create a very basic example that reproduces the issue on your end (like blink LED) and then zip and attach the whole project to this thread.

0 chan loo hoe 1 month ago in reply to Ki

Prodigy 20 points

Thanks! the problem is resolved after running ccstudio.exe with the -clean parameter.

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CCSTUDIO: Code Composer Studio 12 showing incorrect MSP430 mnemonics in Disassembly View