Re: [AArch64][TLSLE][3/3] Implement local executable mode for all memory model

[Jiong Wang <jiong.wang@arm.com>]

Jiong Wang writes:
>>>
>>> Those relocation types required by tls-size 12 & 24 are supported by
>>> binutils-2.25 already, and you have passed compilation and failed at
>>> exectuion, so there do have something wrong I guess.
>>>
>>> Either the generated instruction sequence or the bare-metal environment.
>>>
>>> One thing strange to me is those testcases are guarded by:
>>>
>>>   /* { dg-require-effective-target tls_native } */
>>>
>>> while for bare-metal environment, normally you don't have tls_native
>>> support right? then these testcases should have been marked as
>>> unsupported otherwise they will generate native tls instruction
>>> sequences while the bare-metal runtime environment may don't support
>>> initialize tp register etc, thus caused the exectuion error.
>>>
>>> Could you please double check this? thanks
>>>
>>
>> Well, the "tls_native" check passes (there is no "emutls" string in
>> the generated assembly).
>> This BTW, does not involve the binutils, since it only check the
>> assembly output.
>>
>> Could it be a configure error instead? (where GCC wouldn't notice that
>> it shouldn't generate such relocations)
>
> to me, it's more like this. native tls is enabled on a no such support
> platform.
>
> I am trying to setup a bare-metal environment for reproducing. I was
> testing on linux environment.

Finished test on my local aarch64-none-elf bare-metal. they are marked
as unsupported correctly. gcc is doing correct configuration on my
environment. looks like somehow gcc is doing wrong tls enable on your
bare-metal platform.

UNSUPPORTED: gcc.target/aarch64/tlsdesc_hoist.c
UNSUPPORTED: gcc.target/aarch64/tlsle12_1.c
UNSUPPORTED: gcc.target/aarch64/tlsle24_1.c
UNSUPPORTED: gcc.target/aarch64/tlsle32_1.c
-- 
Regards,
Jiong