FreeRTOS-Kernel/portable
Gaurav-Aggarwal-AWS ae46383c90
Fix vPortFreeSecureContext to read xSecureContext at correct offset (#1441)
When MPU is enabled, the first item in the TCB is not the top of the
stack but the stored context location. As a result, xSecureContext
is located at a negative offset from that position rather than at
offset 0. The current implementation unconditionally reads
xSecureContext at offset 0, which returns an incorrect value when MPU
is enabled.

This commit updates vPortFreeSecureContext to read xSecureContext at
the correcct offset based on the port configuration:
- CM33/CM35P/CM52/CM55/CM85/STAR_MC3: -20 (or -36 with PAC enabled)
- CM23: -20 (no PAC support)
- Without MPU: 0 (xSecureContext remains at the top of stack)

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
2026-07-01 10:58:41 -07:00
..
ARMClang Normalize line endings and whitespace in source files 2022-11-29 15:38:47 -08:00
ARMv8M Fix vPortFreeSecureContext to read xSecureContext at correct offset (#1441) 2026-07-01 10:58:41 -07:00
BCC/16BitDOS Use Regex for Copyright Year in Header Check (#1002) 2024-02-26 09:26:42 -08:00
CCRH/F1Kx Pass core ID to port lock macros (#1212) 2024-12-30 14:28:49 +05:30
CCS Move configASSERT default definition above before including portable.h. (#1185) 2024-11-04 16:35:52 +05:30
CodeWarrior Use Regex for Copyright Year in Header Check (#1002) 2024-02-26 09:26:42 -08:00
Common event-groups: Fix multiple definitions (#1307) 2025-08-14 10:40:59 -07:00
GCC Fix vPortFreeSecureContext to read xSecureContext at correct offset (#1441) 2026-07-01 10:58:41 -07:00
IAR Fix vPortFreeSecureContext to read xSecureContext at correct offset (#1441) 2026-07-01 10:58:41 -07:00
Keil Normalize line endings and whitespace in source files 2022-11-29 15:38:47 -08:00
MemMang Fix spurious heap_5 assert when allocation search reaches end marker (#1425) 2026-06-12 18:55:13 +00:00
MikroC/ARM_CM4F Move configASSERT default definition above before including portable.h. (#1185) 2024-11-04 16:35:52 +05:30
MPLAB MPLAB PIC32MZ-EF - Adds an assert to catch register overflow (#1265) (#1267) 2025-04-25 17:05:15 +05:30
MSVC-MingW Fix undefined behavior from signed left-shift in MSVC-MingW port (#1411) 2026-05-06 16:11:51 -07:00
oWatcom/16BitDOS Fix spelling typos (#1168) 2024-11-01 10:09:49 -07:00
Paradigm/Tern_EE Use Regex for Copyright Year in Header Check (#1002) 2024-02-26 09:26:42 -08:00
Renesas Move configASSERT default definition above before including portable.h. (#1185) 2024-11-04 16:35:52 +05:30
Rowley Use Regex for Copyright Year in Header Check (#1002) 2024-02-26 09:26:42 -08:00
RVDS Disallow unprivileged critical sections with MPU wrappers v2 (#1427) 2026-06-15 15:30:25 -07:00
SDCC/Cygnal Use Regex for Copyright Year in Header Check (#1002) 2024-02-26 09:26:42 -08:00
Softune Use Regex for Copyright Year in Header Check (#1002) 2024-02-26 09:26:42 -08:00
Tasking/ARM_CM4F Use Regex for Copyright Year in Header Check (#1002) 2024-02-26 09:26:42 -08:00
template Pass core ID to port lock macros (#1212) 2024-12-30 14:28:49 +05:30
ThirdParty Add Arm China STAR-MC3 port support (#1363) 2026-02-20 10:33:34 -08:00
WizC/PIC18 Fix spelling typos (#1168) 2024-11-01 10:09:49 -07:00
CMakeLists.txt Add Arm China STAR-MC3 port support (#1363) 2026-02-20 10:33:34 -08:00
readme.txt Normalize line endings and whitespace in source files 2022-11-29 15:38:47 -08:00

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.