how to switch sp to _tx_thread_system_stack_ptr in ports_smp for arm-v7？

[carll00226]

hi scott:
I notice that there are some notes in ports_smp which describe the switch between system stack and task stack for SP, but the related codes are deleted. I want to add the switch to system stack with _tx_thread_system_stack_ptr, can you please tell me where and how to add the switch codes?
Thanks.

[goldscott]

Hi @carll00226, I'm no longer on the Azure RTOS team, so I may not be able to answer all the issues that come up here. Can you show me the notes you are referencing?

[carll00226]

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ｔｘ＿ｔｈｒｅａｄ＿ｓｙｓｔｅｍ＿ｒｅｔｕｒｎ．Ｓ

[carll00226]

hi, scott:
So you go to PX5 RTOS ?

[goldscott]

Hi @carll00226 - I'm still at Microsoft, just in a completely different organization.

That comment may have been a copy-paste error or may be from an old implementation. Shouldn't the IRQ stack be used (at least in interrupts where _tx_thread_context_save is called)?