https://sourceware.org/bugzilla/show_bug.cgi?id=20868
--- Comment #3 from Jiong Wang <jiwang at gcc dot gnu.org> ---
Hi Yury,
Some quick thoughts:
>
> But in executalbe binary ld relaxes tls access with direct address
> calculation:
> 279 register unsigned long __result asm ("w0");
> 280 asm volatile ("adrp %0, :tlsgd:foo; \n"
> 281 400618: 90000080 adrp x0, 410000 <__FRAME_END__+0xf828>
> 282 40061c: f948ec00 ldr x0, [x0,#4568]
> 283 400620: d53bd041 mrs x1, tpidr_el0
> 284 400624: 8b000020 add x0, x1, x0
The sequences is still loading tls offset from GOT table, then add it to the
tp. It seems to me be a GD->IE bug on ILP32.
Can you try to modify 0xf9400000 to 0xb9400000 in elfNN_aarch64_tls_relax when
relaxing BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC, does it work for you?
The "ldr x0, [x0,#4568]" looks suspicous to me. the x0 implies 8bytes
scale, while ILP32 relocations are doing 4bytes shift.
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