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LoongArch: Add relaxation support for call36 that jump to PLT entry

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Part of commit a104f0a3e620 ("LoongArch: Add more relaxation support for
call36") in master.  This part is needed for 2.43 branch to fix a link
failure of QtWebEngine-6.8.1, which can be demonstrated with a reduced
test case (with -shared):

    .text
    .zero 1 << 27   # pretending we have a lot of code in .text
    .globl f        # preemptible, thus must be called via PLT
    f:
      move $a0, $r0
      ret
    g:
      pcaddu18i $t0, %call36(f)
      jr $t0

Signed-off-by: Xi Ruoyao <xry111@xry111.site>
This commit is contained in:
mengqinggang 2024-12-26 14:14:12 +08:00 committed by cailulu
parent e17aa8bbd8
commit bb9a0a36e7
1 changed files with 5 additions and 0 deletions
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5
bfd/elfnn-loongarch.c
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@ -5410,6 +5410,11 @@ loongarch_elf_relax_section (bfd *abfd, asection *sec,
&& GOT_TLS_GD_BOTH_P (tls_type))
symval += 2 * GOT_ENTRY_SIZE;
}
else if (h->plt.offset != MINUS_ONE)
{
sym_sec = htab->elf.splt ? htab->elf.splt : htab->elf.iplt;
symval = h->plt.offset;
}
else if ((h->root.type == bfd_link_hash_defined
|| h->root.type == bfd_link_hash_defweak)
&& h->root.u.def.section != NULL