Darian Leung fd48daf278 freertos(SMP): Fix SMP FreeRTOS Xtensa port FPU/Coproccessor bugs ...

This commit fixes the following FPU/Coprocessor bugs in the Xtensa port of
Amazon SMP FreeRTOS:

- vPortCleanUpCoprocArea() does not calculate the correct pointer to the
task's CPSA (located on the task's stack). This can result in
    - _xt_coproc_release() not releasing the task's CP ownership
    - The next coprocessor exception will write the current CP owner (i.e., the
      deleted task's CPSA) leading to memory corruption
- _xt_coproc_release() writes xCoreID instead of 0 when clearing a CP owner.
  This results in the next CP exception trying to load the CP owner's CPSA at
  the address of "xCoreID", leading to a double exception.

2022-12-23 15:29:17 +08:00

..

riscv

freertos: Refactor port common functions

2022-12-08 01:57:30 +08:00

xtensa

freertos(SMP): Fix SMP FreeRTOS Xtensa port FPU/Coproccessor bugs

2022-12-23 15:29:17 +08:00