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cb06bcba7a
When using MPU wrappers version 2 (configUSE_MPU_WRAPPERS_V1 == 0), portRAISE_PRIVILEGE() is a no-op because the portSVC_RAISE_PRIVILEGE handler is compiled only for MPU wrappers version 1. As a result, an unprivileged task that calls taskENTER_CRITICAL() does not actually raise its privilege, so the subsequent BASEPRI write is ignored by the hardware and the critical section silently fails to mask interrupts. This produces latent, hard-to-debug faults. configALLOW_UNPRIVILEGED_CRITICAL_SECTIONS is therefore not supported with MPU wrappers version 2. In the ARMv7-M MPU ports: - When the option is left undefined under v2, default it to 0 instead of 1 so the dangerous default configuration is safe. - When the option is explicitly set to 1 under v2, raise a compile-time #error so the unsupported configuration is rejected loudly rather than failing silently at run time. Behaviour for MPU wrappers version 1 is unchanged. |
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| .. | ||
| ARMClang | ||
| ARMv8M | ||
| BCC/16BitDOS | ||
| CCRH/F1Kx | ||
| CCS | ||
| CodeWarrior | ||
| Common | ||
| GCC | ||
| IAR | ||
| Keil | ||
| MemMang | ||
| MikroC/ARM_CM4F | ||
| MPLAB | ||
| MSVC-MingW | ||
| oWatcom/16BitDOS | ||
| Paradigm/Tern_EE | ||
| Renesas | ||
| Rowley | ||
| RVDS | ||
| SDCC/Cygnal | ||
| Softune | ||
| Tasking/ARM_CM4F | ||
| template | ||
| ThirdParty | ||
| WizC/PIC18 | ||
| CMakeLists.txt | ||
| readme.txt | ||
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.