iar: Zephyr 4.2 fails with IAR EWARM 9.70.1 #94842
Description
Describe the bug
Currently, IAR toolchain 9.70..1 does not support .ltorg statement.
This was added in d7d3ae5 just in time for 4.2 release.
It has been fixed in fa165da, but needs backport to 4.2
It would be very good if stable zephyr worked with stable IAR.
Regression
- This is a regression.
Steps to reproduce
The problem can be reproduced by running, e.g., west build -p -b frdm_mcxn947/mcxn947/cpu0 tests/kernel/mem_protect/sys_sem -T kernel.memory_protection.sys_sem.nouser
Relevant log output
[54/169] Building C object zephyr/arch/arch...iles/arch__arm__core__cortex_m.dir/thread.o
FAILED: zephyr/arch/arch/arm/core/cortex_m/CMakeFiles/arch__arm__core__cortex_m.dir/thread.o
ccache /opt/iarsystems/cxarm/arm/bin/iccarm --silent /workdir/zephyr/arch/arm/core/cortex_m/thread.c -DCPU_MCXN947VDF_cm33_core0 -DKERNEL -DK_HEAP_MEM_POOL_SIZE=0 -DLPFLEXCOMM_INIT_NOT_USED_IN_DRIVER=1 -D__PROGRAM_START -D__ZEPHYR_SUPERVISOR__ -D__ZEPHYR__=1 -I/workdir/zephyr/kernel/include -I/workdir/zephyr/arch/arm/include -I/workdir/zephyr/build/zephyr/include/generated/zephyr -I/workdir/zephyr/include -I/workdir/zephyr/build/zephyr/include/generated -I/workdir/zephyr/soc/nxp/mcx -I/workdir/zephyr/soc/nxp/mcx/mcxn/. -I/workdir/zephyr/subsys/testsuite/include -I/workdir/zephyr/subsys/testsuite/coverage -I/workdir/zephyr/subsys/testsuite/ztest/include -I/workdir/modules/hal/cmsis/CMSIS/Core/Include -I/workdir/modules/hal/cmsis_6/CMSIS/Core/Include -I/workdir/zephyr/modules/cmsis_6/. -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/drivers/common -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/drivers/lpflexcomm -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/drivers/mcx_spc -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/drivers/port -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/drivers/cache/cache64 -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/drivers/lpflexcomm/lpuart -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/devices/MCX/MCXN/MCXN947 -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/devices/MCX/MCXN/periph -I/workdir/modules/hal/nxp/mcux/mcux-sdk-ng/devices/MCX/MCXN/MCXN947/drivers -I/workdir/modules/hal/ti/mspm0/source/ti/devices/msp/. -I/workdir/modules/hal/ti/mspm0/source/ti/devices/msp/m0p -I/workdir/modules/hal/ti/mspm0/source/ti/devices/msp/peripherals -I/workdir/modules/hal/ti/mspm0/source/ti/devices/msp/peripherals/m0p -I/workdir/modules/hal/ti/mspm0/source/ti/devices/msp/peripherals/m0p/sysctl -I/workdir/zephyr/lib/libc/minimal/include -I/workdir/zephyr/lib/libc/common/include -e -Ohz --preinclude /workdir/zephyr/build/zephyr/include/generated/zephyr/autoconf.h --debug --preinclude /workdir/zephyr/include/zephyr/toolchain/iar/iar_missing_defs.h -e --language gnu --do_explicit_init_in_named_sections --macro_positions_in_diagnostics --no_wrap_diagnostics --endian=little --cpu=Cortex-M33 -DRTT_USE_ASM=0 --diag_suppress=Ta184 --vla --cmse --aeabi --thumb --diag_suppress=Pe068,Pe1143,Pe111,Pe1675,Pe054,Pe223 --diag_suppress=Pe381 --diag_suppress=Pe513,Pe177,Pe144,Pe167,Pe185,Pa084,Pa082,Pe1097 --diag_suppress=Pe054,Pe186,Pe546,Pe550,Pe128,Pe188,Pe144,Pe167 -D__IAR_CSTD_c17 --dependencies=ns zephyr/arch/arch/arm/core/cortex_m/CMakeFiles/arch__arm__core__cortex_m.dir/thread.o.d -o zephyr/arch/arch/arm/core/cortex_m/CMakeFiles/arch__arm__core__cortex_m.dir/thread.o
".ltorg\n"
^
"/workdir/zephyr/arch/arm/core/cortex_m/thread.c",563 Error[Og005]: Unknown symbol in inline assembly: ".ltorg"
".ltorg\n"
^
"/workdir/zephyr/arch/arm/core/cortex_m/thread.c",563 Error[Og006]: Error in inline assembly: "Expression can not be forward"
[59/169] Building C object zephyr/arch/arch...arch__arm__core__cortex_m.dir/isr_wrapper.o
ninja: build stopped: subcommand failed.
FATAL ERROR: command exited with status 1: /usr/bin/cmake --build /workdir/zephyr/buildImpact
Major – Severely degrades functionality; workaround is difficult or unavailable.
Environment
EWARM 9.70.1
Zephyr v4.2-branch
Additional Context
No response