[LD][AARCH64]Add BFD_RELOC_AARCH64_LD64_GOTOFF_LO15 Support.

[deliverable/binutils-gdb.git] / bfd / elfnn-aarch64.c

diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c
index 2157ccdfc7270338f5a76829a227ec55afff4b9f..adef278071dd68659b927119c8e42805664eb455 100644 (file)
--- a/bfd/elfnn-aarch64.c
+++ b/bfd/elfnn-aarch64.c
@@ -4414,6 +4414,7 @@ aarch64_reloc_got_type (bfd_reloc_code_real_type r_type)
     case BFD_RELOC_AARCH64_GOT_LD_PREL19:
     case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
     case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+    case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
     case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
     case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
       return GOT_NORMAL;
@@ -4963,6 +4964,7 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
        case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
        case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
        case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
+       case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
        case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
          base_got = globals->root.sgot;
          off = h->got.offset;
@@ -5030,6 +5032,9 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
              addend = (globals->root.sgot->output_section->vma
                        + globals->root.sgot->output_offset);
              break;
+           case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+             value = (value - globals->root.sgot->output_section->vma
+                      - globals->root.sgot->output_offset);
            default:
              break;
            }
@@ -5311,6 +5316,70 @@ elfNN_aarch64_final_link_relocate (reloc_howto_type *howto,
 
       break;
 
+    case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
+      if (h != NULL)
+         value = aarch64_calculate_got_entry_vma (h, globals, info, value,
+                                                  output_bfd,
+                                                  unresolved_reloc_p);
+      else
+       {
+         struct elf_aarch64_local_symbol *locals
+           = elf_aarch64_locals (input_bfd);
+
+         if (locals == NULL)
+           {
+             int howto_index = bfd_r_type - BFD_RELOC_AARCH64_RELOC_START;
+             (*_bfd_error_handler)
+               (_("%B: Local symbol descriptor table be NULL when applying "
+                  "relocation %s against local symbol"),
+                input_bfd, elfNN_aarch64_howto_table[howto_index].name);
+             abort ();
+           }
+
+         off = symbol_got_offset (input_bfd, h, r_symndx);
+         base_got = globals->root.sgot;
+         if (base_got == NULL)
+           abort ();
+
+         bfd_vma got_entry_addr = (base_got->output_section->vma
+                                   + base_got->output_offset + off);
+
+         if (!symbol_got_offset_mark_p (input_bfd, h, r_symndx))
+           {
+             bfd_put_64 (output_bfd, value, base_got->contents + off);
+
+             if (bfd_link_pic (info))
+               {
+                 asection *s;
+                 Elf_Internal_Rela outrel;
+
+                 /* For local symbol, we have done absolute relocation in static
+                    linking stage.  While for share library, we need to update
+                    the content of GOT entry according to the share objects
+                    loading base address.  So we need to generate a
+                    R_AARCH64_RELATIVE reloc for dynamic linker.  */
+                 s = globals->root.srelgot;
+                 if (s == NULL)
+                   abort ();
+
+                 outrel.r_offset = got_entry_addr;
+                 outrel.r_info = ELFNN_R_INFO (0, AARCH64_R (RELATIVE));
+                 outrel.r_addend = value;
+                 elf_append_rela (output_bfd, s, &outrel);
+               }
+
+             symbol_got_offset_mark (input_bfd, h, r_symndx);
+           }
+       }
+
+      /* Update the relocation value to GOT entry addr as we have transformed
+        the direct data access into indirect data access through GOT.  */
+      value = symbol_got_offset (input_bfd, h, r_symndx);
+      value = _bfd_aarch64_elf_resolve_relocation (bfd_r_type, place, value,
+                                                  0, weak_undef_p);
+      *unresolved_reloc_p = FALSE;
+      break;
+
     case BFD_RELOC_AARCH64_TLSGD_ADD_LO12_NC:
     case BFD_RELOC_AARCH64_TLSGD_ADR_PAGE21:
     case BFD_RELOC_AARCH64_TLSGD_ADR_PREL21:
@@ -6392,6 +6461,7 @@ elfNN_aarch64_gc_sweep_hook (bfd *abfd,
        case BFD_RELOC_AARCH64_GOT_LD_PREL19:
        case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
        case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+       case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
        case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
        case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
        case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC:
@@ -6746,6 +6816,7 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
            case BFD_RELOC_AARCH64_JUMP26:
            case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
            case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+           case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
            case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
            case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
            case BFD_RELOC_AARCH64_NN:
@@ -6859,6 +6930,7 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
        case BFD_RELOC_AARCH64_GOT_LD_PREL19:
        case BFD_RELOC_AARCH64_LD32_GOTPAGE_LO14:
        case BFD_RELOC_AARCH64_LD32_GOT_LO12_NC:
+       case BFD_RELOC_AARCH64_LD64_GOTOFF_LO15:
        case BFD_RELOC_AARCH64_LD64_GOTPAGE_LO15:
        case BFD_RELOC_AARCH64_LD64_GOT_LO12_NC:
        case BFD_RELOC_AARCH64_TLSDESC_ADD_LO12_NC: