forked from epagris/FreeRTOS-Kernel
84bdb05bd2
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.
Each real time kernel port consists of three files that contain the core kernel components and are common to every port, and one or more files that are specific to a particular microcontroller and/or compiler. + The FreeRTOS/Source/Portable/MemMang directory contains the five sample memory allocators as described on the https://www.FreeRTOS.org WEB site. + The other directories each contain files specific to a particular microcontroller or compiler, where the directory name denotes the compiler specific files the directory contains. For example, if you are interested in the [compiler] port for the [architecture] microcontroller, then the port specific files are contained in FreeRTOS/Source/Portable/[compiler]/[architecture] directory. If this is the only port you are interested in then all the other directories can be ignored.