On Thu, Sep 27, 2012 at 4:09 AM, Michael Hope michael.hope@linaro.orgwrote:
On 27 September 2012 01:06, Shivamurthy Shastri shiva.linuxworks@gmail.com wrote:
On Wed, Sep 26, 2012 at 6:28 PM, Fathi Boudra fathi.boudra@linaro.org wrote:
On 26 September 2012 15:44, Shivamurthy Shastri shiva.linuxworks@gmail.com wrote:
Hi,
I am using Linaro Toolchain for compiling UEFI and I am getting alignment fault as exception while running UEFI on Origen Board. When I was using other cross compilers the issue was not there. The crash report is as follows:
Data Abort Exception PC at 0x4F84DCDC CPSR 0x60000133 nZCveAifT_svc
/home/shiva/workspace/armserver/uefi_origen/edk2/Build/OrigenBoard-Exynos/DEBUG_ARMLINUXGCC/ARM/FatPkg/EnhancedFatDxe/Fat/DEBUG/Fat.dll
loaded at 0x4F84D000 (PE/COFF offset) 0xCDC (ELF or Mach-O offset)
0xA9C
0xF8BD6037 LDRH r6, [sp, #0x37] R0 0x0000000B R1 0x0000000A R2 0x4FCEEAD8 R3 0x80000000 R4 0x4F836010 R5 0x4F863619 R6 0x00000000 R7 0x4F837F10 R8 0xFFFFFFFF R9 0x00000000 R10 0x00000001 R11 0x00000000 R12 0x00000000 SP 0x4FCEEA20 LR 0x4F84DCDD PC 0x4F84DCDC DFSR 0x00000001 DFAR 0x4FCEEB17 IFSR 0x0000140B IFAR 0x00910883 Alignment fault: read from 0x4FCEEB17 Instruction Domain fault on Page at 0x00910883
ASSERT
/home/shiva/workspace/armserver/uefi_origen/edk2/ArmPkg/Library/DefaultExceptionHandlerLib/DefaultExceptionHandler.c(304):
((BOOLEAN)(0==1))
Could you try to add -mno-unaligned-access flag. See
http://git.linaro.org/gitweb?p=arm/uefi/uefi-next.git%3Ba=commitdiff%3Bh=228...
Cheers,
Fathi Boudra Linaro Release Manager | LAVA Project Manager Linaro.org | Open source software for ARM SoCs
I tried that, but I am unable to solve the problem.
Hi Shiva. The instruction in your dump looks suspicious: LDRH r6, [sp, #0x37]
sp should be eight byte aligned, so this ends up doing a half word load from an odd address. Could you upload the build log and a pre-built version of Fat.dll somewhere so I can have a look?
Note that the CPU supports unaliged access out of reset. You have to manually turn the unaligned access trap on and that's probably happening somewhere in your startup routines.
-- Michael
Hi Michael,
I was using code sourcery toolchain which has not given this problem. Meanwhile I have not changed any code of UEFI. But, I am getting problem with the linaro toolchain. Below are the toolchain details.
CodeSourcery toolchain: shiva@shiva:/usr/local/arm/arm/bin$ ./arm-none-linux-gnueabi-gcc -v Using built-in specs. Target: arm-none-linux-gnueabi Configured with: /scratch/julian/2010q1-release-linux-lite/src/gcc-4.4-2010q1/configure --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi --enable-threads --disable-libmudflap --disable-libssp --disable-libstdcxx-pch --enable-extra-sgxxlite-multilibs --with-arch=armv5te --with-gnu-as --with-gnu-ld --with-specs='%{funwind-tables|fno-unwind-tables|mabi=*|ffreestanding|nostdlib:;:-funwind-tables} %{O2:%{!fno-remove-local-statics: -fremove-local-statics}} %{O*:%{O|O0|O1|O2|Os:;:%{!fno-remove-local-statics: -fremove-local-statics}}}' --enable-languages=c,c++ --enable-shared --disable-lto --enable-symvers=gnu --enable-__cxa_atexit --with-pkgversion='Sourcery G++ Lite 2010q1-202' --with-bugurl= https://support.codesourcery.com/GNUToolchain/ --disable-nls --prefix=/opt/codesourcery --with-sysroot=/opt/codesourcery/arm-none-linux-gnueabi/libc --with-build-sysroot=/scratch/julian/2010q1-release-linux-lite/install/arm-none-linux-gnueabi/libc --with-gmp=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --with-mpfr=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --with-ppl=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-cloog=/scratch/julian/2010q1-release-linux-lite/obj/host-libs-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu/usr --disable-libgomp --enable-poison-system-directories --with-build-time-tools=/scratch/julian/2010q1-release-linux-lite/install/arm-none-linux-gnueabi/bin --with-build-time-tools=/scratch/julian/2010q1-release-linux-lite/install/arm-none-linux-gnueabi/bin Thread model: posix gcc version 4.4.1 (Sourcery G++ Lite 2010q1-202)
Linaro toolchain: shiva@shiva:/usr/local/arm/gcc-linaro-arm-linux-gnueabihf-2012.08-20120827_linux/bin$ ./arm-linux-gnueabihf-gcc -v Using built-in specs. COLLECT_GCC=./arm-linux-gnueabihf-gcc COLLECT_LTO_WRAPPER=/usr/local/arm/gcc-linaro-arm-linux-gnueabihf-2012.08-20120827_linux/bin/../libexec/gcc/arm-linux-gnueabihf/4.7.2/lto-wrapper Target: arm-linux-gnueabihf Configured with: /cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/src/gcc-linaro-4.7-2012.08/configure --build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu --target=arm-linux-gnueabihf --prefix=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/install --with-sysroot=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-languages=c,c++,fortran --enable-multilib --with-arch=armv7-a --with-tune=cortex-a9 --with-fpu=vfpv3-d16 --with-float=hard --with-pkgversion='crosstool-NG linaro-1.13.1-2012.08-20120827 - Linaro GCC 2012.08' --with-bugurl=https://bugs.launchpad.net/gcc-linaro--enable-__cxa_atexit --enable-libmudflap --enable-libgomp --enable-libssp --with-gmp=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpfr=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-mpc=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-ppl=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-cloog=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-libelf=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static --with-host-libstdcxx='-L/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/.build/arm-linux-gnueabihf/build/static/lib -lpwl' --enable-threads=posix --disable-libstdcxx-pch --enable-linker-build-id --enable-gold --with-local-prefix=/cbuild/slaves/oort12/crosstool-ng/builds/arm-linux-gnueabihf-linux/install/arm-linux-gnueabihf/libc --enable-c99 --enable-long-long --with-mode=thumb Thread model: posix gcc version 4.7.2 20120731 (prerelease) (crosstool-NG linaro-1.13.1-2012.08-20120827 - Linaro GCC 2012.08)