len0rd/FreeRTOS-Kernel
1
0
Fork 0
mirror of https://github.com/FreeRTOS/FreeRTOS-Kernel.git synced 2025-04-19 21:11:57 -04:00
Code Issues Packages Projects Releases Wiki Activity
FreeRTOS-Kernel/portable/GCC/ARM_CM3_MPU
History
Soren Ptak 84bdb05bd2
Fix portSWITCH_TO_USER_MODE() on Armv7-M MPU ports (#803) 
A task's privilege level is stored in ulTaskFlag member in the TCB. Current
implementation of portSWITCH_TO_USER_MODE() does not update this
flag but just lowers the processor's privilege level. This results in many
APIs incorrectly determining task's privilege level and access permissions -

- xPortIsAuthorizedToAccessBuffer
- xPortIsTaskPrivileged
- xPortIsAuthorizedToAccessKernelObject

This PR fixes the portSWITCH_TO_USER_MODE() implementation to correctly
update the ulTaskFlag member in the TCB before lowering the processor's
privilege level.
2023-09-26 14:36:23 +05:30
..
mpu_wrappers_v2_asm.c CI-CD Updates (#768) 2023-09-05 14:24:04 -07:00
port.c Fix portSWITCH_TO_USER_MODE() on Armv7-M MPU ports (#803) 2023-09-26 14:36:23 +05:30
portmacro.h Fix portSWITCH_TO_USER_MODE() on Armv7-M MPU ports (#803) 2023-09-26 14:36:23 +05:30