Fix the size of the dos_message field in the internal_extra_pe_filehdr structure...

[deliverable/binutils-gdb.git] / include / bfdlink.h

diff --git a/include/bfdlink.h b/include/bfdlink.h
index 9b2194f6d5ca930f661e338062cc64877fdfc66a..32d15129ab5ceeae17bfd1929a39106301bf9739 100644 (file)
--- a/include/bfdlink.h
+++ b/include/bfdlink.h
@@ -1,5 +1,5 @@
 /* bfdlink.h -- header file for BFD link routines
 /* 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.
    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.  */
 };
 
   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
 /* 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;
 
   /* 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.  */
 
   /* 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 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
     {
   /* 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;
          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
        } 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 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;
   /* 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 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;
 
   /* 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 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;
   /* 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 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;
 
   /* 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 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 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 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
 
   /* 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;
 
      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
   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;
 };
 
   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.  */
 
 /* 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);
     (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);

 };
 \f
 /* The linker builds link_order structures which tell the code how to
 };
 \f
 /* 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 *);
 
 /* 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
 /* 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