[binutils-gdb] LoongArch: Do not check R_LARCH_SOP_PUSH_ABSOLUTE to avoid broken links to old object files

[liu & zhensong]

https://sourceware.org/git/gitweb.cgi?p=binutils-gdb.git;h=e4ed68e5770d348c209fbef37a96e83a17115b86

commit e4ed68e5770d348c209fbef37a96e83a17115b86
Author: Lulu Cai <cailulu@loongson.cn>
Date:   Wed Jun 19 11:00:36 2024 +0800

    LoongArch: Do not check R_LARCH_SOP_PUSH_ABSOLUTE to avoid broken links to old object files
    
    R_LARCH_SOP_PUSH_ABSOLUTE with -fPIC was heavily used in the era of gas-2.38.
    We do not check this relocation to prevent broken links with old object
    files.

Diff:
---
 bfd/elfnn-loongarch.c | 11 ++++++-----
 1 file changed, 6 insertions(+), 5 deletions(-)

diff --git a/bfd/elfnn-loongarch.c b/bfd/elfnn-loongarch.c
index b1720760475..da84aabc1ae 100644
--- a/bfd/elfnn-loongarch.c
+++ b/bfd/elfnn-loongarch.c
@@ -756,10 +756,6 @@ loongarch_tls_transition (bfd *input_bfd,
   return loongarch_tls_transition_without_check (info, r_type, h);
 }
 
-/* Look through the relocs for a section during the first phase, and
-   allocate space in the global offset table or procedure linkage
-   table.  */
-
 static bool
 bad_static_reloc (bfd *abfd, const Elf_Internal_Rela *rel, asection *sec,
 		  unsigned r_type, struct elf_link_hash_entry *h,
@@ -787,6 +783,10 @@ bad_static_reloc (bfd *abfd, const Elf_Internal_Rela *rel, asection *sec,
   return false;
 }
 
+/* Look through the relocs for a section during the first phase, and
+   allocate space in the global offset table or procedure linkage
+   table.  */
+
 static bool
 loongarch_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
 			    asection *sec, const Elf_Internal_Rela *relocs)
@@ -948,10 +948,11 @@ loongarch_elf_check_relocs (bfd *abfd, struct bfd_link_info *info,
 	  break;
 
 	case R_LARCH_ABS_HI20:
-	case R_LARCH_SOP_PUSH_ABSOLUTE:
 	  if (bfd_link_pic (info))
 	    return bad_static_reloc (abfd, rel, sec, r_type, h, isym);
 
+	  /* Fall through.  */
+	case R_LARCH_SOP_PUSH_ABSOLUTE:
 	  if (h != NULL)
 	    /* If this reloc is in a read-only section, we might
 	       need a copy reloc.  We can't check reliably at this