TMS320F280049: If C2000 device support stack canaries

Julia Li

Part Number: TMS320F280049

Hi team,

I ask this for our customer.

According to the following link, the stack canary is implemented in the compiler, but only GNU (GCC) or TI arm compiler is mentioned.

https://e2e.ti.com/support/microcontrollers/arm-based-microcontrollers-group/arm-based-microcontrollers/f/arm-based-microcontrollers-forum/1170384/tm4c129encpdt-binary-security-and-stack-canaries/4404832?tisearch=e2e-sitesearch&keymatch=Stack%20Canaries#4404832

Customer want to know whether C2000 compiler we use can also implement the stack canary? If so, how to implement it? Is there any relevant information or document? If not, do we have other similar methods? Customers want to know if we have cyber security program (to prevent stack information from being modified). I recommended ERAD's stack overflow detection code for customer, but it's not quite what theyt asked for. Stack overflow is a detection measure in functional safety, and stack canary is a measure in network security.

https://mcuoneclipse.com/2019/09/28/stack-canaries-with-gcc-checking-for-stack-overflow-at-runtime/

Best,

Julia

over 3 years ago

+1 Alan Phipps over 3 years ago

TI__Expert 4880 points

While the C2000 compiler doesn't support stack canary / stack overflow detection as a feature, you can use the function entry/exit hook to manually implement a form of it.

Please search the C28x compiler manual for the sub-chapter titled "Enabling Entry Hook and Exit Hook Functions".

As you pointed out, our newer clang-based compiler for Arm supports it as a feature.

0 Chiranth Murthy over 3 years ago in reply to Alan Phipps

Intellectual 365 points

Hi Alan,

With TI RTOS & TI ARM compiler v5.2.5 , Dose this Entry Hook and Exit Hook Function works ?

-chiranth

0 George Mock over 3 years ago in reply to Chiranth Murthy

TI__Guru**** 251180 points

Entry and exit hooks are available with the TI ARM compiler version 5.2.5. I suspect there are versions of TI-RTOS which are documented to work with that compiler. Please check the TI-RTOS documentation to be sure.

Thanks and regards,

-George

0 Chiranth Murthy over 3 years ago in reply to George Mock

Intellectual 365 points

Hi George,

Can you suggest em some example code to work with entry and exit hook and how it is to be implemented in existing code?

Thanks in advance

-Chiranth

0 George Mock over 3 years ago in reply to Chiranth Murthy

TI__Guru**** 251180 points

Unfortunately, we don't have any examples available, and there are no plans to create any.

Thanks and regards,

-George

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TMS320F280049: If C2000 device support stack canaries