* archures.c (bfd_archures_list): Always NULL terminate the list.

[deliverable/binutils-gdb.git] / bfd / section.c

diff --git a/bfd/section.c b/bfd/section.c
index 2f280c5958728e9bdc542e1bb00b8b558c305faf..564a51e5bdbbb732e6c8dbe262f8077ec9488fbf 100644 (file)
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -1,5 +1,5 @@
 /* Object file "section" support for the BFD library.
-   Copyright (C) 1990, 1991, 1992, 1993, 1996 Free Software Foundation, Inc.
+   Copyright (C) 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
    Written by Cygnus Support.
 
 This file is part of BFD, the Binary File Descriptor library.
@@ -240,7 +240,7 @@ CODE_FRAGMENT
 .           sections. *}
 .#define SEC_COFF_SHARED_LIBRARY 0x800
 .
-.        {* The section is a common section (symbols may be defined
+.        {* The section contains common symbols (symbols may be defined
 .           multiple times, the value of a symbol is the amount of
 .           space it requires, and the largest symbol value is the one
 .           used).  Most targets have exactly one of these (which we
@@ -269,8 +269,55 @@ CODE_FRAGMENT
 .         table.  *}
 .#define SEC_SORT_ENTRIES 0x80000
 .
+.      {* When linking, duplicate sections of the same name should be
+.         discarded, rather than being combined into a single section as
+.         is usually done.  This is similar to how common symbols are
+.         handled.  See SEC_LINK_DUPLICATES below.  *}
+.#define SEC_LINK_ONCE 0x100000
+.
+.      {* If SEC_LINK_ONCE is set, this bitfield describes how the linker
+.         should handle duplicate sections.  *}
+.#define SEC_LINK_DUPLICATES 0x600000
+.
+.      {* This value for SEC_LINK_DUPLICATES means that duplicate
+.         sections with the same name should simply be discarded. *}
+.#define SEC_LINK_DUPLICATES_DISCARD 0x0
+.
+.      {* This value for SEC_LINK_DUPLICATES means that the linker
+.         should warn if there are any duplicate sections, although
+.         it should still only link one copy.  *}
+.#define SEC_LINK_DUPLICATES_ONE_ONLY 0x200000
+.
+.      {* This value for SEC_LINK_DUPLICATES means that the linker
+.         should warn if any duplicate sections are a different size.  *}
+.#define SEC_LINK_DUPLICATES_SAME_SIZE 0x400000
+.
+.      {* This value for SEC_LINK_DUPLICATES means that the linker
+.         should warn if any duplicate sections contain different
+.         contents.  *}
+.#define SEC_LINK_DUPLICATES_SAME_CONTENTS 0x600000
+.
+.      {* This section was created by the linker as part of dynamic
+.         relocation or other arcane processing.  It is skipped when
+.         going through the first-pass output, trusting that someone
+.         else up the line will take care of it later.  *}
+.#define SEC_LINKER_CREATED 0x800000
+.
 .      {*  End of section flags.  *}
 .
+.      {* Some internal packed boolean fields.  *}
+.
+.      {* See the vma field.  *}
+.      unsigned int user_set_vma : 1;
+.
+.      {* Whether relocations have been processed.  *}
+.      unsigned int reloc_done : 1;
+.
+.      {* A mark flag used by some of the linker backends.  *}
+.      unsigned int linker_mark : 1;
+.
+.      {* End of internal packed boolean fields.  *}
+.
 .       {*  The virtual memory address of the section - where it will be
 .           at run time.  The symbols are relocated against this.  The
 .          user_set_vma flag is maintained by bfd; if it's not set, the
@@ -279,7 +326,6 @@ CODE_FRAGMENT
 .          target and various flags).  *}
 .
 .   bfd_vma vma;
-.   boolean user_set_vma;
 .
 .       {*  The load address of the section - where it would be in a
 .           rom image; really only used for writing section header
@@ -380,7 +426,6 @@ CODE_FRAGMENT
 .
 .   bfd *owner;
 .
-.   boolean reloc_done;
 .       {* A symbol which points at this section only *}
 .   struct symbol_cache_entry *symbol;
 .   struct symbol_cache_entry **symbol_ptr_ptr;
@@ -439,9 +484,9 @@ static const asymbol global_syms[] =
 #define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX)        \
   const asymbol * const SYM = (asymbol *) &global_syms[IDX]; \
   const asection SEC = \
-    { NAME, 0, 0, FLAGS, 0, false, 0, 0, 0, 0, (asection *) &SEC, \
-      0, 0, 0, 0, 0, 0, 0, 0,  0, 0, 0, 0, 0, 0, 0, 0, (boolean) 0, \
-      (asymbol *) &global_syms[IDX], (asymbol **) &SYM, }
+    { NAME, 0, 0, FLAGS, 0, 0, 0, 0, 0, 0, 0, 0, (asection *) &SEC, \
+      0, 0, 0, 0, 0, 0, 0, 0,  0, 0, 0, 0, 0, 0, 0, 0, \
+      (asymbol *) &global_syms[IDX], (asymbol **) &SYM, 0, 0 }
 
 STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol,
             BFD_COM_SECTION_NAME, 0);
@@ -971,6 +1016,6 @@ DESCRIPTION
        Not enough memory exists to create private data for @var{osec}.
 
 .#define bfd_copy_private_section_data(ibfd, isection, obfd, osection) \
-.     BFD_SEND (ibfd, _bfd_copy_private_section_data, \
+.     BFD_SEND (obfd, _bfd_copy_private_section_data, \
 .              (ibfd, isection, obfd, osection))
 */