http://sourceware.org/bugzilla/show_bug.cgi?id=12771
--- Comment #9 from Doug Kwan <dougkwan at google dot com> 2011-06-30 06:51:00 UTC --- Thanks for fix that. I will submit a patch later to convert to unaligned swaps as needed. -Doug On Wed, Jun 29, 2011 at 11:01 PM, ian at airs dot com <sourceware-bugzi...@sourceware.org> wrote: > http://sourceware.org/bugzilla/show_bug.cgi?id=12771 > > Ian Lance Taylor <ian at airs dot com> changed: > > What |Removed |Added > ---------------------------------------------------------------------------- > Status|RESOLVED |REOPENED > CC| |dougkwan at google dot com, > | |ian at airs dot com > Resolution|WORKSFORME | > > --- Comment #8 from Ian Lance Taylor <ian at airs dot com> 2011-06-30 > 06:00:32 UTC --- > OK, I looked at this a bit more. It's possible that this is being caused by > an > unaligned access. I see that on ARM an unaligned access will load rotated > bytes. Does this happen on the emulator? > > This object file has unaligned R_ARM_ABS32 relocations against the .debug_info > section. When the linker fetches the addend for those relocations, it will do > an unaligned read. > > Try changing the function Arm_relocate_functions::abs32 around line 3284 of > arm.cc to this: > > // R_ARM_ABS32: (S + A) | T > static inline typename This::Status > abs32(unsigned char* view, > const Sized_relobj_file<32, big_endian>* object, > const Symbol_value<32>* psymval, > Arm_address thumb_bit) > { > typedef typename elfcpp::Swap<32, big_endian>::Valtype Valtype; > Valtype addend = elfcpp::Swap_unaligned<32, big_endian>::readval(view); > Valtype x = psymval->value(object, addend) | thumb_bit; > elfcpp::Swap_unaligned<32, big_endian>::writeval(view, x); > return This::STATUS_OKAY; > } > > If that change fixes the crash, then it is indeed an unaligned access problem. > > The ARM ELF ABI does suggest that there is no required alignment for > relocations, so it does seem that much of the code in Arm_relocation_functions > needs to use Swap_unaligned rather than Swap. > > -- > Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email > ------- You are receiving this mail because: ------- > You are on the CC list for the bug. > -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug. _______________________________________________ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
