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78e0cc778a
armv8.1-m: Add task dedicated PAC key To harden the security, each task is assigned a dedicated PAC key, so that attackers needs to guess the all the tasks' PAC keys right to exploit the system using Return Oriented Programming. The kernel is now updated to support the following: * A PAC key set with a random number generated and is saved in the task's context when a task is created. * As part of scheduling, the task's PAC key is stored/restored to/from the task's context when a task is unscheduled/scheduled from/to run. stack-overflow-check: Introduce portGET_CURRENT_TOP_OF_STACK macro When MPU wrapper v2 is used, the task's context is stored in TCB and `pxTopOfStack`` member of TCB points to the context location in TCB. We, therefore, need to read PSP to find the task's current top of stack. Signed-off-by: Ahmed Ismail <Ahmed.Ismail@arm.com> |
3 weeks ago | |
|---|---|---|
| .. | ||
| non_secure | 3 weeks ago | |
| secure | 3 months ago | |
| ReadMe.txt | 1 year ago | |
| copy_files.py | 12 months ago | |
ReadMe.txt
This directory tree contains the master copy of the FreeRTOS Armv8-M and Armv8.1-M ports. Do not use the files located here! These file are copied into separate FreeRTOS/Source/portable/[compiler]/ARM_CM[23|33|55|85]_NNN directories prior to each FreeRTOS release. If your Armv8-M and Armv8.1-M application uses TrustZone then use the files from the FreeRTOS/Source/portable/[compiler]/ARM_CM[23|33|55|85] directories. If your Armv8-M and Armv8.1-M application does not use TrustZone then use the files from the FreeRTOS/Source/portable/[compiler]/ARM_CM[23|33|55|85]_NTZ directories.