[binutils-gdb] S/390: 32-bit PIE undef weak failures

[Alan Modra]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=74a7e2f31ac6bd8914b0c3f1c6c4c51017fefc02

commit 74a7e2f31ac6bd8914b0c3f1c6c4c51017fefc02
Author: Alan Modra <amodra@gmail.com>
Date:   Mon Feb 12 07:51:48 2024 +1030

    S/390: 32-bit PIE undef weak failures
    
    Like 10e7c0457cb7 but for elf32-s390.c
    
            * elf32-s390.c (elf_s390_adjust_dynamic_symbol): Use
            UNDEFWEAK_NO_DYNAMIC_RELOC.
            (allocate_dynrelocs): Likewise.
            (elf_s390_relocate_section): Check resolved_to_zero.
            (elf_s390_finish_dynamic_symbol): Don't generate runtime reloc if
            UNDEFWEAK_NO_DYNAMIC_RELOC.

Diff:
---
 bfd/elf32-s390.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/bfd/elf32-s390.c b/bfd/elf32-s390.c
index 1a2ade0414e..bd9eb1ea31b 100644
--- a/bfd/elf32-s390.c
+++ b/bfd/elf32-s390.c
@@ -1447,8 +1447,7 @@ elf_s390_adjust_dynamic_symbol (struct bfd_link_info *info,
     {
       if (h->plt.refcount <= 0
 	  || SYMBOL_CALLS_LOCAL (info, h)
-	  || (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
-	      && h->root.type != bfd_link_hash_undefweak))
+	  || UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
 	{
 	  /* This case can occur if we saw a PLT32 reloc in an input
 	     file, but the symbol was never referred to by a dynamic
@@ -1677,8 +1676,7 @@ allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf)
 	htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
       else if (tls_type == GOT_TLS_GD)
 	htab->elf.srelgot->size += 2 * sizeof (Elf32_External_Rela);
-      else if ((ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
-		|| h->root.type != bfd_link_hash_undefweak)
+      else if (!UNDEFWEAK_NO_DYNAMIC_RELOC (info, h)
 	       && (bfd_link_pic (info)
 		   || WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, 0, h)))
 	htab->elf.srelgot->size += sizeof (Elf32_External_Rela);
@@ -2240,9 +2238,7 @@ elf_s390_relocate_section (bfd *output_bfd,
 							  h)
 		       || (bfd_link_pic (info)
 			   && SYMBOL_REFERENCES_LOCAL (info, h))
-		       || (ELF_ST_VISIBILITY (h->other)
-			   && h->root.type == bfd_link_hash_undefweak))
-
+		       || resolved_to_zero)
 		{
 		  /* This is actually a static link, or it is a
 		     -Bsymbolic link and the symbol is defined
@@ -3499,6 +3495,9 @@ elf_s390_finish_dynamic_symbol (bfd *output_bfd,
       else if (bfd_link_pic (info)
 	       && SYMBOL_REFERENCES_LOCAL (info, h))
 	{
+	  if (UNDEFWEAK_NO_DYNAMIC_RELOC (info, h))
+	    return true;
+
 	  /* If this is a static link, or it is a -Bsymbolic link and
 	     the symbol is defined locally or was forced to be local
 	     because of a version file, we just want to emit a