Frame store in Stack during task Context switch

I am using freertos port for cortex-m33 with trustzone enable, I want to backtrace the task from task stack and to do so i want to understand the frame which get pushed into the task’s stack at each context switch.

Is there any details available, what frame get pushed into the stack in PendSV_Handler?

By definition, that is implemented in the port. I do not believe that for most ports, this is documented outside the source code, so I would decode that from the source, eg here:

FreeRTOS-Kernel/portable/GCC/ARM_CM33/secure/secure_context_port.c at main · FreeRTOS/FreeRTOS-Kernel · GitHub

@RAc has shared the secure part. Here is the non-secure part -

Do you want this for understanding or are you trying to solve a problem?