Hi, On 7 December 2012 13:19, Shivamurthy Shastri <shiva.linuxwo...@gmail.com> wrote: > Hi, > > I am trying to compile UEFI code with linaro toolchain version: > > # arm-linux-gnueabi-gcc --version > arm-linux-gnueabi-gcc (Ubuntu/Linaro 4.7.1-5ubuntu1~ppa1) 4.7.1 > Copyright (C) 2012 Free Software Foundation, Inc. > This is free software; see the source for copying conditions. There is NO > warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. > > I got the erros as follows: > > "/usr/bin/arm-linux-gnueabi-gcc" -mthumb -march=armv7-a > -I/home/shiva/workspace/arndale/edk2/SamsungPlatformPkg/ExynosPkg/Exynos5250/Include/Platform > -g -Os -fshort-wchar -fno-strict-aliasing -Wall -Werror -Wno-missing-braces > -Wno-array-bounds -c -include AutoGen.h -mword-relocations -mlittle-endian > -mabi=aapcs -mapcs -fno-short-enums -save-temps -fsigned-char > -ffunction-sections -fdata-sections -fomit-frame-pointer -Wno-address -O0 -o > /home/shiva/workspace/arndale/edk2/Build/Arndale-Exynos/DEBUG_ARMLINUXGCC/ARM/SamsungPlatformPkg/ExynosPkg/Exynos5250/Sec/Sec/OUTPUT/./Smc.obj > -I/home/shiva/workspace/arndale/edk2/SamsungPlatformPkg/ExynosPkg/Exynos5250/Sec > -I/home/shiva/workspace/arndale/edk2/Build/Arndale-Exynos/DEBUG_ARMLINUXGCC/ARM/SamsungPlatformPkg/ExynosPkg/Exynos5250/Sec/Sec/DEBUG > -I/home/shiva/workspace/arndale/edk2/MdePkg > -I/home/shiva/workspace/arndale/edk2/MdePkg/Include > -I/home/shiva/workspace/arndale/edk2/MdePkg/Include/Arm > -I/home/shiva/workspace/arndale/edk2/MdeModulePkg > -I/home/shiva/workspace/arndale/edk2/MdeModulePkg/Include > -I/home/shiva/workspace/arndale/edk2/ArmPkg > -I/home/shiva/workspace/arndale/edk2/ArmPkg/Include > -I/home/shiva/workspace/arndale/edk2/ArmPlatformPkg > -I/home/shiva/workspace/arndale/edk2/ArmPlatformPkg/Include > -I/home/shiva/workspace/arndale/edk2/SamsungPlatformPkg/ExynosPkg/Exynos5250 > -I/home/shiva/workspace/arndale/edk2/SamsungPlatformPkg/ExynosPkg/Exynos5250/Include > /home/shiva/workspace/arndale/edk2/SamsungPlatformPkg/ExynosPkg/Exynos5250/Sec/Smc.c > Smc.s: Assembler messages: > Smc.s:51: Error: selected processor does not support Thumb mode `smc 0' > > Is there any issue with the toolchain or any flags I am using?
The issue is the -march=armv7-a option. Technically, baseline ARMv7-A does not support the 'smc' instruction - it is added by the Security Extensions. Gas (which is the program producing your error message) is following this behaviour. Gas does expose -march=armv7-a+sec which does allow 'smc', unfortunately GCC does not understand this option. There are two ways around this: 1) Use -mcpu=<some ARMv7-A core> instead of -march=armv7-a. If all you want is 'smc', using -mcpu=cortex-a8 will do. 2) If you are using inline assembly to generate the 'smc' instruction, add '.arch_extension sec' to the assembly before the sec instruction. I hope this helps. Thanks, Matt -- Matthew Gretton-Dann Linaro Toolchain Working Group matthew.gretton-d...@linaro.org _______________________________________________ linaro-toolchain mailing list linaro-toolchain@lists.linaro.org http://lists.linaro.org/mailman/listinfo/linaro-toolchain
