[AArch64][2/2] Implement -fpic for -mcmodel=small

[Jiong Wang]

Christophe Lyon writes:

> On 27 June 2015 at 14:49, Jiong Wang <jiong.wang@arm.com> wrote:
>>
>> Andreas Schwab writes:
>>
>>> Jiong Wang <jiong.wang@arm.com> writes:
>>>
>>>> Andreas Schwab writes:
>>>>
>>>>> spawn -ignore SIGHUP /opt/gcc/gcc-20150627/Build/gcc/xgcc -B/opt/gcc/gcc-20150627/Build/gcc/ -fno-diagnostics-show-caret -fdiagnostics-color=never -O0 -w -fpie -c -o pr65593.o /opt/gcc/gcc-20150627/gcc/testsuite/gcc.c-torture/compile/pr65593.c
>>>>> /tmp/cc0Pymaf.s: Assembler messages:
>>>>> /tmp/cc0Pymaf.s:11: Error: unknown relocation modifier at operand 2 -- `ldr x0,[x0,#:gotpage_lo15:a]'
>>>>> /tmp/cc0Pymaf.s:19: Error: unknown relocation modifier at operand 2 --
>>>>> `ldr x2,[x0,#:gotpage_lo15:bar]'
>>>>
>>>> Andreas,
>>>>
>>>>   The binutils patch has been upstreamed already. Please checkout the
>>>>   latest binutils code.
>>>
>>> That must work with the current binutils.
>>
>> I see, agree.
>>
>> Will adopt current ILP32 feature detection mechanism into -fpic.
>>
>> And some new TLS patches may need similiar check also.
>>
>> Thanks.
>>
> Hi Jiong,
>
> I'm not sure I fully understand your answer. I believe you are going
> to change the testcase, right?

Sorry about the trouble.

I am going to add gcc_GAS_CHECK_FEATURE to detect whether those relocs
needed by -fpic supported. Just like what's done for ILP32 detection.

commit 891f2090d994d420cb56942e486f6bba3ede265f
Author: clyon <clyon@138bc75d-0d04-0410-961f-82ee72b054a4>
Date:   Wed Dec 11 12:57:08 2013 +0000


>
> I'm seeing whole toolchain build failures (when building glibc) since
> you committed this, because of the new relocations. I understand your
> suggestion is to move to trunk binutils to have support for these new
> relocations. Any other things I could do to avoid changing the
> binutils version I use?
>
> Thanks
> Christophe.
>
>
>> --
>> Regards,
>> Jiong
>>

-- 
Regards,
Jiong