X-Git-Url: http://git.efficios.com/?a=blobdiff_plain;ds=sidebyside;f=include%2Fbfdlink.h;h=32d15129ab5ceeae17bfd1929a39106301bf9739;hb=2f1575ea6f93a3f0c2b439ac6bf5fe34ef42a1ad;hp=9b2194f6d5ca930f661e338062cc64877fdfc66a;hpb=76359541825cf36ecd14ab6b5974ee56e1c59eff;p=deliverable%2Fbinutils-gdb.git

diff --git a/include/bfdlink.h b/include/bfdlink.h
index 9b2194f6d5..32d15129ab 100644
--- a/include/bfdlink.h
+++ b/include/bfdlink.h
@@ -1,5 +1,5 @@
 /* bfdlink.h -- header file for BFD link routines
-   Copyright (C) 1993-2016 Free Software Foundation, Inc.
+   Copyright (C) 1993-2019 Free Software Foundation, Inc.
    Written by Steve Chamberlain and Ian Lance Taylor, Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.
@@ -42,6 +42,12 @@ enum bfd_link_discard
   discard_all		/* Discard all locals.  */
 };
 
+enum notice_asneeded_action {
+  notice_as_needed,
+  notice_not_needed,
+  notice_needed
+};
+
 /* Whether to generate ELF common symbols with the STT_COMMON type
    during a relocatable link.  */
 enum bfd_link_elf_stt_common
@@ -100,9 +106,13 @@ struct bfd_link_hash_entry
   /* Type of this entry.  */
   ENUM_BITFIELD (bfd_link_hash_type) type : 8;
 
-  /* Symbol is referenced in a normal object file, as distict from a LTO
-     IR object file.  */
-  unsigned int non_ir_ref : 1;
+  /* Symbol is referenced in a normal regular object file,
+     as distinct from a LTO IR object file.  */
+  unsigned int non_ir_ref_regular : 1;
+
+  /* Symbol is referenced in a normal dynamic object file,
+     as distinct from a LTO IR object file.  */
+  unsigned int non_ir_ref_dynamic : 1;
 
   /* Symbol is a built-in define.  These will be overridden by PROVIDE
      in a linker script.  */
@@ -111,6 +121,11 @@ struct bfd_link_hash_entry
   /* Symbol defined in a linker script.  */
   unsigned int ldscript_def : 1;
 
+  /* Symbol will be converted from absolute to section-relative.  Set for
+     symbols defined by a script from "dot" (also SEGMENT_START or ORIGIN)
+     outside of an output section statement.  */
+  unsigned int rel_from_abs : 1;
+
   /* A union of information depending upon the type.  */
   union
     {
@@ -140,9 +155,6 @@ struct bfd_link_hash_entry
 	  struct bfd_link_hash_entry *next;
 	  /* BFD symbol was found in.  */
 	  bfd *abfd;
-	  /* For __start_<name> and __stop_<name> symbols, the first
-	     input section matching the name.  */
-	  asection *section;
 	} undef;
       /* bfd_link_hash_defined, bfd_link_hash_defweak.  */
       struct
@@ -328,6 +340,9 @@ struct bfd_link_info
   /* TRUE if unreferenced sections should be removed.  */
   unsigned int gc_sections: 1;
 
+  /* TRUE if exported symbols should be kept during section gc.  */
+  unsigned int gc_keep_exported: 1;
+
   /* TRUE if every symbol should be reported back via the notice
      callback.  */
   unsigned int notice_all: 1;
@@ -341,6 +356,13 @@ struct bfd_link_info
   /* TRUE if all data symbols should be dynamic.  */
   unsigned int dynamic_data: 1;
 
+  /* TRUE if section groups should be resolved.  */
+  unsigned int resolve_section_groups: 1;
+
+  /* Set if output file is big-endian, or if that is unknown, from
+     the command line or first input file endianness.  */
+  unsigned int big_endian : 1;
+
   /* Which symbols to strip.  */
   ENUM_BITFIELD (bfd_link_strip) strip : 2;
 
@@ -379,6 +401,9 @@ struct bfd_link_info
   /* TRUE if PT_GNU_RELRO segment should be created.  */
   unsigned int relro: 1;
 
+  /* TRUE if separate code segment should be created.  */
+  unsigned int separate_code: 1;
+
   /* Nonzero if .eh_frame_hdr section and PT_GNU_EH_FRAME ELF segment
      should be created.  1 for DWARF2 tables, 2 for compact tables.  */
   unsigned int eh_frame_hdr_type: 2;
@@ -429,6 +454,9 @@ struct bfd_link_info
   /* TRUE if ok to have multiple definition.  */
   unsigned int allow_multiple_definition: 1;
 
+  /* TRUE if ok to have prohibit multiple definition of absolute symbols.  */
+  unsigned int prohibit_multiple_definition_absolute: 1;
+
   /* TRUE if ok to have version with no definition.  */
   unsigned int allow_undefined_version: 1;
 
@@ -457,24 +485,21 @@ struct bfd_link_info
   /* TRUE if the linker script contained an explicit PHDRS command.  */
   unsigned int user_phdrs: 1;
 
+  /* TRUE if program headers ought to be loaded.  */
+  unsigned int load_phdrs: 1;
+
   /* TRUE if we should check relocations after all input files have
      been opened.  */
   unsigned int check_relocs_after_open_input: 1;
 
-  /* TRUE if BND prefix in PLT entries is always generated.  */
-  unsigned int bndplt: 1;
-
   /* TRUE if generation of .interp/PT_INTERP should be suppressed.  */
   unsigned int nointerp: 1;
 
-  /* TRUE if we shouldn't check relocation overflow.  */
-  unsigned int no_reloc_overflow_check: 1;
-
-  /* TRUE if generate a 1-byte NOP as suffix for x86 call instruction.  */
-  unsigned int call_nop_as_suffix : 1;
+  /* TRUE if common symbols should be treated as undefined.  */
+  unsigned int inhibit_common_definition : 1;
 
-  /* The 1-byte NOP for x86 call instruction.  */
-  char call_nop_byte;
+  /* TRUE if "-Map map" is passed to linker.  */
+  unsigned int has_map_file : 1;
 
   /* Char that may appear as the first char of a symbol, but should be
      skipped (like symbol_leading_char) when looking up symbols in
@@ -581,8 +606,9 @@ struct bfd_link_info
      backend to decide.  */
   int extern_protected_data;
 
-  /* > 0 to treat undefined weak symbol in the executable as dynamic,
-     requiring dynamic relocation.  */
+  /* 1 to make undefined weak symbols dynamic when building a dynamic
+     object.  0 to resolve undefined weak symbols to zero.  -1 to let
+     the backend decide.  */
   int dynamic_undefined_weak;
 
   /* Non-zero if auto-import thunks for DATA items in pei386 DLLs
@@ -614,6 +640,11 @@ struct bfd_link_info
   struct bfd_elf_version_tree *version_info;
 };
 
+/* Some forward-definitions used by some callbacks.  */
+
+struct elf_strtab_hash;
+struct elf_sym_strtab;
+
 /* This structures holds a set of callback functions.  These are called
    by the BFD linker routines.  */
 
@@ -735,6 +766,16 @@ struct bfd_link_callbacks
     (struct bfd_link_info *, bfd * abfd,
      asection * current_section, asection * previous_section,
      bfd_boolean new_segment);
+  /* This callback provides a chance for callers of the BFD to examine the
+     ELF string table and symbol table once they are complete and indexes and
+     offsets assigned.  */
+  void (*examine_strtab)
+    (struct elf_sym_strtab *syms, bfd_size_type symcount,
+     struct elf_strtab_hash *symstrtab);
+  /* This callback should emit the CTF section into a non-loadable section in
+     the output BFD named .ctf or a name beginning with ".ctf.".  */
+  void (*emit_ctf)
+    (void);
 };
 
 /* The linker builds link_order structures which tell the code how to
@@ -836,6 +877,20 @@ struct bfd_link_order_reloc
 /* Allocate a new link_order for a section.  */
 extern struct bfd_link_order *bfd_new_link_order (bfd *, asection *);
 
+struct bfd_section_already_linked;
+
+extern bfd_boolean bfd_section_already_linked_table_init (void);
+extern void bfd_section_already_linked_table_free (void);
+extern bfd_boolean _bfd_handle_already_linked
+  (struct bfd_section *, struct bfd_section_already_linked *,
+   struct bfd_link_info *);
+
+extern struct bfd_section *_bfd_nearby_section
+  (bfd *, struct bfd_section *, bfd_vma);
+
+extern void _bfd_fix_excluded_sec_syms
+  (bfd *, struct bfd_link_info *);
+
 /* These structures are used to describe version information for the
    ELF linker.  These structures could be manipulated entirely inside
    BFD, but it would be a pain.  Instead, the regular linker sets up