[PATCH 2/2] s390: Avoid reloc overflows on undefined weak symbols (cont)

[Andreas Krebbel]

On 6/26/24 17:20, Jens Remus wrote:
> This complements and reuses logic from Andreas Krebbel's commit
> 896a639babe2 ("s390: Avoid reloc overflows on undefined weak symbols").
>
> Replace relative long addressing instructions of weak symbols, which
> will definitely resolve to zero, with either a load address of 0 or a
> a trapping insn.
>
> This prevents the PLT32DBL relocation from overflowing in case the
> binary will be loaded at 4GB or more.
>
> bfd/
> 	* elf64-s390.c (elf_s390_relocate_section): Replace
> 	instructions using undefined weak symbols with relative
> 	addressing to avoid relocation overflows.
>
> ld/
> 	* testsuite/ld-s390/s390.exp: Add new test.
> 	* testsuite/ld-s390/weakundef-2.s: New test.
> 	* testsuite/ld-s390/weakundef-2.dd: Likewise.
>
> Reported-by: Alexander Gordeev <agordeev@linux.ibm.com>
> Suggested-by: Ilya Leoshkevich <iii@linux.ibm.com>
> Suggested-by: Andreas Krebbel <krebbel@linux.ibm.com>
> Signed-off-by: Jens Remus <jremus@linux.ibm.com>

Ok. Thanks!


Andreas