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Fix the context array size for MPU ports (#1230)

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Fix the context array size for MPU ports

Ensure the saved context location falls within the reserved context area
rather than overlapping with the next MPU_SETTINGS structure member.

This never caused a problem because actual read/write operations
start from one word before the saved context location.

Signed-off-by: Gaurav Aggarwal <aggarg@amazon.com>
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Gaurav-Aggarwal-AWS 2025-01-25 13:34:03 +05:30 • committed by GitHub
parent 2b35979a1a
commit 11d0caa614
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26 changed files with 208 additions and 173 deletions
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8
portable/GCC/ARM_CM3_MPU/portmacro.h
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@ -125,6 +125,14 @@ typedef struct MPU_REGION_SETTINGS
#endif /* #if ( configUSE_MPU_WRAPPERS_V1 == 0 ) */
/*
* +------------------------------+-------------------------------+-----+
* | CONTROL, r4-r11, EXC_RETURN | PSP, r0-r3, r12, LR, PC, xPSR | |
* +------------------------------+-------------------------------+-----+
*
* <-----------------------------><-------------------------------><---->
* 10 9 1
*/
#define MAX_CONTEXT_SIZE ( 20 )
/* Size of an Access Control List (ACL) entry in bits. */