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fix: add __stack_end defsym for fault_handler MPU guard (Issue #678)

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STM32Cube ld script provides _estack but not __stack_end. Define
__stack_end = _estack - 0x1000 (_Min_Stack_Size) via --defsym so
fault_mpu_guard_init() and fault_mem_c() can locate the stack bottom.

Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>
This commit is contained in:
sl-firmware 2026-03-17 21:39:44 -04:00
parent ea5203b67d
commit 56c59f60fe
1 changed files with 1 additions and 0 deletions
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platformio.ini
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@ -16,3 +16,4 @@ build_flags =
-Os
-Wl,--defsym,_Min_Heap_Size=0x2000
-Wl,--defsym,_Min_Stack_Size=0x1000
-Wl,--defsym,__stack_end=_estack-0x1000