[AArch64] Support RAS extension for ARMv8 onwards.

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

diff --git a/bfd/elfnn-aarch64.c b/bfd/elfnn-aarch64.c
index 16a6eea92182a90a2a927aafb1c1077290031911..5b9878e8f3123bf12f739deb29d88716f762d687 100644 (file)
--- a/bfd/elfnn-aarch64.c
+++ b/bfd/elfnn-aarch64.c
@@ -575,7 +575,7 @@ static reloc_howto_type elfNN_aarch64_howto_table[] =
   HOWTO (AARCH64_R (MOVW_SABS_G0),     /* type */
         0,                     /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
-        16,                    /* bitsize */
+        17,                    /* bitsize */
         FALSE,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_signed,      /* complain_on_overflow */
@@ -590,7 +590,7 @@ static reloc_howto_type elfNN_aarch64_howto_table[] =
   HOWTO64 (AARCH64_R (MOVW_SABS_G1),   /* type */
         16,                    /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
-        16,                    /* bitsize */
+        17,                    /* bitsize */
         FALSE,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_signed,      /* complain_on_overflow */
@@ -605,7 +605,7 @@ static reloc_howto_type elfNN_aarch64_howto_table[] =
   HOWTO64 (AARCH64_R (MOVW_SABS_G2),   /* type */
         32,                    /* rightshift */
         2,                     /* size (0 = byte, 1 = short, 2 = long) */
-        16,                    /* bitsize */
+        17,                    /* bitsize */
         FALSE,                 /* pc_relative */
         0,                     /* bitpos */
         complain_overflow_signed,      /* complain_on_overflow */
@@ -7080,6 +7080,22 @@ elfNN_aarch64_check_relocs (bfd *abfd, struct bfd_link_info *info,
 
       if (h != NULL)
        {
+         /* If a relocation refers to _GLOBAL_OFFSET_TABLE_, create the .got.
+            This shows up in particular in an R_AARCH64_PREL64 in large model
+            when calculating the pc-relative address to .got section which is
+            used to initialize the gp register.  */
+         if (h->root.root.string
+             && strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0)
+           {
+             if (htab->root.dynobj == NULL)
+               htab->root.dynobj = abfd;
+
+             if (! aarch64_elf_create_got_section (htab->root.dynobj, info))
+               return FALSE;
+
+             BFD_ASSERT (h == htab->root.hgot);
+           }
+
          /* Create the ifunc sections for static executables.  If we
             never see an indirect function symbol nor we are building
             a static executable, those sections will be empty and
@@ -8233,6 +8249,7 @@ elfNN_aarch64_allocate_ifunc_dynrelocs (struct elf_link_hash_entry *h,
       && h->def_regular)
     return _bfd_elf_allocate_ifunc_dyn_relocs (info, h,
                                               &eh->dyn_relocs,
+                                              NULL,
                                               htab->plt_entry_size,
                                               htab->plt_header_size,
                                               GOT_ENTRY_SIZE);