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Fix LOAD Segment With RWX Permissions Warning #365

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Fix LOAD Segment With RWX Permissions Warning #365

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18798eb
FIX: LOAD segment with RWX permissions warning
r2axz Jan 30, 2026
38b9ba6
FIX: GCC10 and below does not support the (READONLY) attribute
r2axz Jan 31, 2026
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5 changes: 5 additions & 0 deletions cmake/FindCMSIS.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -88,6 +88,10 @@ function(cmsis_generate_default_linker_script FAMILY DEVICE CORE)
stm32_get_memory_info(FAMILY ${FAMILY} DEVICE ${DEVICE} CORE ${CORE} HEAP SIZE HEAP_SIZE)
stm32_get_memory_info(FAMILY ${FAMILY} DEVICE ${DEVICE} CORE ${CORE} STACK SIZE STACK_SIZE)

if (${CMAKE_C_COMPILER_ID} STREQUAL "GNU" AND ${CMAKE_C_COMPILER_VERSION} VERSION_GREATER_EQUAL "11.0.0")
set(LD_SCRIPT_FORCE_READONLY_SECTIONS TRUE)
endif()

add_custom_command(OUTPUT "${OUTPUT_LD_FILE}"
COMMAND ${CMAKE_COMMAND}
-DFLASH_ORIGIN="${FLASH_ORIGIN}"
Expand All @@ -101,6 +105,7 @@ function(cmsis_generate_default_linker_script FAMILY DEVICE CORE)
-DSTACK_SIZE="${STACK_SIZE}"
-DHEAP_SIZE="${HEAP_SIZE}"
-DLINKER_SCRIPT="${OUTPUT_LD_FILE}"
-DFORCE_READONLY_SECTIONS="${LD_SCRIPT_FORCE_READONLY_SECTIONS}"
-P "${STM32_CMAKE_DIR}/stm32/linker_ld.cmake"
)
endif()
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10 changes: 7 additions & 3 deletions cmake/stm32/linker_ld.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -29,6 +29,10 @@ MB_MEM2 (NOLOAD) : { _sMB_MEM2 = . ; *(MB_MEM2) ; _eMB_MEM2 = . ; } >RAM_S
")
endif()

if(FORCE_READONLY_SECTIONS)
set(READONLY "(READONLY)")
endif()

set(SCRIPT_TEXT
"ENTRY(Reset_Handler)\n\
\n\
Expand Down Expand Up @@ -84,20 +88,20 @@ SECTIONS\n\
__exidx_end = .;\n\
} >FLASH\n\
\n\
.preinit_array :\n\
.preinit_array ${READONLY} :\n\
{\n\
PROVIDE_HIDDEN (__preinit_array_start = .);\n\
KEEP (*(.preinit_array*))\n\
PROVIDE_HIDDEN (__preinit_array_end = .);\n\
} >FLASH\n\
.init_array :\n\
.init_array ${READONLY} :\n\
{\n\
PROVIDE_HIDDEN (__init_array_start = .);\n\
KEEP (*(SORT(.init_array.*)))\n\
KEEP (*(.init_array*))\n\
PROVIDE_HIDDEN (__init_array_end = .);\n\
} >FLASH\n\
.fini_array :\n\
.fini_array ${READONLY}:\n\
{\n\
PROVIDE_HIDDEN (__fini_array_start = .);\n\
KEEP (*(SORT(.fini_array.*)))\n\
Expand Down