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[deliverable/binutils-gdb.git] / bfd / elf-bfd.h

diff --git a/bfd/elf-bfd.h b/bfd/elf-bfd.h
index a9d51a3598560f1ae14caa1cadc0db81e8c78eef..4a01fe6ceb6f91127e72332e17451a3cf7593e68 100644 (file)
--- a/bfd/elf-bfd.h
+++ b/bfd/elf-bfd.h
@@ -1,6 +1,6 @@
 /* BFD back-end data structures for ELF files.
    Copyright 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
-   2002, 2003, 2004, 2005, 2006 Free Software Foundation, Inc.
+   2002, 2003, 2004, 2005, 2006, 2007 Free Software Foundation, Inc.
    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -538,6 +538,10 @@ enum action_discarded
     PRETEND = 2
   };
 
+typedef asection * (*elf_gc_mark_hook_fn)
+  (asection *, struct bfd_link_info *, Elf_Internal_Rela *,
+   struct elf_link_hash_entry *, Elf_Internal_Sym *);
+
 struct elf_backend_data
 {
   /* The architecture for this backend.  */
@@ -546,6 +550,9 @@ struct elf_backend_data
   /* The ELF machine code (EM_xxxx) for this backend.  */
   int elf_machine_code;
 
+  /* EI_OSABI. */
+  int elf_osabi;
+
   /* The maximum page size for this backend.  */
   bfd_vma maxpagesize;
 
@@ -843,9 +850,12 @@ struct elf_backend_data
 
   /* This function is called during section gc to discover the section a
      particular relocation refers to.  */
-  asection * (*gc_mark_hook)
-    (asection *sec, struct bfd_link_info *, Elf_Internal_Rela *,
-     struct elf_link_hash_entry *h, Elf_Internal_Sym *);
+  elf_gc_mark_hook_fn gc_mark_hook;
+
+  /* This function, if defined, is called after the first gc marking pass
+     to allow the backend to mark additional sections.  */
+  bfd_boolean (*gc_mark_extra_sections)
+    (struct bfd_link_info *info, elf_gc_mark_hook_fn gc_mark_hook);
 
   /* This function, if defined, is called during the sweep phase of gc
      in order that a backend might update any data structures it might
@@ -1106,10 +1116,17 @@ struct elf_backend_data
   unsigned can_refcount : 1;
   unsigned want_got_sym : 1;
   unsigned want_dynbss : 1;
-    /* Targets which do not support physical addressing often require
-       that the p_paddr field in the section header to be set to zero.
-       This field indicates whether this behavior is required.  */
+
+  /* Targets which do not support physical addressing often require
+     that the p_paddr field in the section header to be set to zero.
+     This field indicates whether this behavior is required.  */
   unsigned want_p_paddr_set_to_zero : 1;
+
+  /* True if an object file lacking a .note.GNU-stack section
+     should be assumed to be requesting exec stack.  At least one
+     other file in the link needs to have a .note.GNU-stack section
+     for a PT_GNU_STACK segment to be created.  */
+  unsigned default_execstack : 1;
 };
 
 /* Information stored for each BFD section in an ELF file.  This
@@ -1199,13 +1216,6 @@ struct bfd_elf_section_data
 #define elf_next_in_group(sec) (elf_section_data(sec)->next_in_group)
 #define elf_sec_group(sec)     (elf_section_data(sec)->sec_group)
 
-/* Return TRUE if section has been discarded.  */
-#define elf_discarded_section(sec)                             \
-  (!bfd_is_abs_section (sec)                                   \
-   && bfd_is_abs_section ((sec)->output_section)               \
-   && (sec)->sec_info_type != ELF_INFO_TYPE_MERGE              \
-   && (sec)->sec_info_type != ELF_INFO_TYPE_JUST_SYMS)
-
 #define xvec_get_elf_backend_data(xvec) \
   ((struct elf_backend_data *) (xvec)->backend_data)
 
@@ -1735,9 +1745,21 @@ extern bfd_boolean _bfd_elf_symbol_refs_local_p
 extern bfd_boolean bfd_elf_match_symbols_in_sections
   (asection *, asection *, struct bfd_link_info *);
 
+extern void bfd_elf_perform_complex_relocation
+  (bfd *                   output_bfd ATTRIBUTE_UNUSED,
+   struct bfd_link_info *  info,
+   bfd *                   input_bfd,
+   asection *              input_section,
+   bfd_byte *              contents,
+   Elf_Internal_Rela *     rel,
+   Elf_Internal_Sym *      local_syms,
+   asection **             local_sections);
+
 extern bfd_boolean _bfd_elf_setup_sections
   (bfd *);
 
+extern void _bfd_elf_set_osabi (bfd * , struct bfd_link_info *);
+
 extern const bfd_target *bfd_elf32_object_p
   (bfd *);
 extern const bfd_target *bfd_elf32_core_file_p
@@ -1979,7 +2001,7 @@ extern bfd_boolean _sh_elf_set_mach_from_flags
       else if (info->unresolved_syms_in_objects == RM_IGNORE           \
               && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)          \
        ;                                                               \
-      else                                                             \
+      else if (!info->relocatable)                                     \
        {                                                               \
          bfd_boolean err;                                              \
          err = (info->unresolved_syms_in_objects == RM_GENERATE_ERROR  \