[PATCH 0/3] aarch64: Update ld.so for vector abi

[Szabolcs Nagy]

On 01/08/18 23:32, Richard Henderson wrote:
> On 08/01/2018 06:23 PM, rth@twiddle.net wrote:
>> There is a new calling convention defined for vectorized functions [1].
> 
> I should have added that it appears that armclang is already
> using this ABI, and QEMU has received a bug report about "not
> working properly" with dynamic linking.
> 
> Whee!
> 

this abi is only usable without lazy binding otherwise
it's not backward compatible with existing dynamic linkers.

the pcs document does not talk about this since lazy
binding is for elf targets only, i think it's possible
to make the code generation backward compatible: e.g.
make the vector pcs attribute imply the noplt attribute,
this fixes pic/pie code, for executables somehow bindnow
should be turned on (or move the corresponding relocations
out from DT_JMPREL part of the relocation table so the
dynamic linker processes them at load time)