[PATCH][GOLD] Avoid generating unused dynamic relocation for __exidx_{start,end}

[Ian Lance Taylor]

"Doug Kwan (關振德)" <dougkwan@google.com> writes:

> 2012-03-13  Doug Kwan  <dougkwan@google.com>
>
>        * arm.cc (Target_arm::do_define_standard_symbols): New method.
>        (Target_arm::do_finalize_sections): Remove code which defines
>        __exidx_start and __exidx_end.  Make symbol table parameter
>        anonymous as it is not used.
>        * gold.cc (queue_middle_tasks): Call target hook to define any
>        target-specific symbols.
>        * target.h (Target::define_standard_symbols): New method.
>        (Target::do_define_standard_symbols): Same.
>        * testsuite/Makefile.am (arm_exidx_test): Dump relocations also.
>        * testsuite/Makefile.in: Regenerate.
>        * testsuite/arm_exidx.s: Generate data relocations for __exidx_start
>        and __exidx_end.
>        * testsuite/arm_exidx_test.sh: Check that no unused dynamic
>        relocations are generated for __exidx_start and __exidx_end.

This is OK.

Thanks.

Ian