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[[!tag open_issue_binutils open_issue_gcc open_issue_glibc]]
Needs porting / support in [[/binutils]] and [[/glibc]], and then some target
configure magic for [[/GCC]].
<http://nickclifton.livejournal.com/6612.html> has a short summary about how to
use it from GCC.
* binutils
Already passes the ifunc testsuite bits for GAS, but notably for LD
(`ld/testsuite/ld-ifunc/ifunc.exp`), too, but that one contains a bunch of
stuff explicitly tailored towards Linux. For example, we get *OS/ABI: UNIX
- Linux*. (This should be fixed through using [[toolchain/ELFOSABI_GNU]].)
Most of the executables that the testsuite generates don't actually
execute. (Though, this is partly due to the [[static
issue|binutils#static]].)
$ tmpdir/local_prog
ifunc working correctly
$ tmpdir/static_prog
Killed
$ tmpdir/dynamic_prog
tmpdir/dynamic_prog: error while loading shared libraries: ./tmpdir/libshared_ifunc.so: ELF file OS ABI invalid
$ tmpdir/static_nonifunc_prog
Killed
$ tmpdir/test-1
tmpdir/test-1: error while loading shared libraries: tmpdir/libshared_ifunc.so: ELF file OS ABI invalid
* [[glibc]]
* [[libc_variant_selection]]
* [[GCC]]
In `gcc/config.gcc`, set `default_gnu_indirect_function=yes' for us, like
done for GNU/Linux. See thread starting at
*id:"CAFULd4YZsAQ6ckFjXtU5-yyv=3tYQwTJOPhU9zmJxFOrnotj8g@mail.gmail.com"*.
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