daily update

[deliverable/binutils-gdb.git] / bfd / elf32-i386.c

diff --git a/bfd/elf32-i386.c b/bfd/elf32-i386.c
index 578f5959590e6c1ce54f6bb8a0057146418cfa70..9e96e215fb90e59fe6b184dff7133c208b529134 100644 (file)
--- a/bfd/elf32-i386.c
+++ b/bfd/elf32-i386.c
@@ -692,6 +692,9 @@ struct elf_i386_link_hash_table
 
   /* Small local sym to section mapping cache.  */
   struct sym_sec_cache sym_sec;
+
+  /* _TLS_MODULE_BASE_ symbol.  */
+  struct bfd_link_hash_entry *tls_module_base;
 };
 
 /* Get the i386 ELF linker hash table from a link_info structure.  */
@@ -767,6 +770,7 @@ elf_i386_link_hash_table_create (bfd *abfd)
   ret->is_vxworks = 0;
   ret->srelplt2 = NULL;
   ret->plt0_pad_byte = 0;
+  ret->tls_module_base = NULL;
 
   return &ret->elf.root;
 }
@@ -2431,6 +2435,9 @@ elf_i386_always_size_sections (bfd *output_bfd,
                 tls_sec, 0, NULL, FALSE,
                 bed->collect, &bh)))
            return FALSE;
+
+         elf_i386_hash_table (info)->tls_module_base = bh;
+
          tlsbase = (struct elf_link_hash_entry *)bh;
          tlsbase->def_regular = 1;
          tlsbase->other = STV_HIDDEN;
@@ -2475,6 +2482,27 @@ elf_i386_fake_sections (bfd *abfd ATTRIBUTE_UNUSED,
   return TRUE;
 }
 
+/* _TLS_MODULE_BASE_ needs to be treated especially when linking
+   executables.  Rather than setting it to the beginning of the TLS
+   section, we have to set it to the end.    This function may be called
+   multiple times, it is idempotent.  */
+
+static void
+set_tls_module_base (struct bfd_link_info *info)
+{
+  struct bfd_link_hash_entry *base;
+
+  if (!info->executable)
+    return;
+
+  base = elf_i386_hash_table (info)->tls_module_base;
+
+  if (!base)
+    return;
+
+  base->u.def.value = elf_hash_table (info)->tls_size;
+}
+
 /* Return the base VMA address which should be subtracted from real addresses
    when resolving @dtpoff relocation.
    This is PT_TLS segment p_vaddr.  */
@@ -2536,6 +2564,8 @@ elf_i386_relocate_section (bfd *output_bfd,
                    && !strcmp (input_section->output_section->name,
                                ".tls_vars"));
 
+  set_tls_module_base (info);
+
   rel = relocs;
   relend = relocs + input_section->reloc_count;
   for (; rel < relend; rel++)