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

diff --git a/bfd/section.c b/bfd/section.c
index ab5635b4b5f307a61f697264fdae52445ba6ec71..f0a66b247e967f1275496b05b1b0f1142d4f1aa1 100644 (file)
--- a/bfd/section.c
+++ b/bfd/section.c
@@ -1,8 +1,5 @@
 /* Object file "section" support for the BFD library.
 /* Object file "section" support for the BFD library.

-   Copyright 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-   2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011,
-   2012
-   Free Software Foundation, Inc.
+   Copyright (C) 1990-2016 Free Software Foundation, Inc.

    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.
    Written by Cygnus Support.
 
    This file is part of BFD, the Binary File Descriptor library.


@@ -158,10 +155,10 @@ CODE_FRAGMENT
 .  const char *name;
 .
 .  {* A unique sequence number.  *}
 .  const char *name;
 .
 .  {* A unique sequence number.  *}

-.  int id;
+.  unsigned int id;

 .
 .  {* Which section in the bfd; 0..n-1 as sections are created in a bfd.  *}
 .
 .  {* Which section in the bfd; 0..n-1 as sections are created in a bfd.  *}

-.  int index;
+.  unsigned int index;

 .
 .  {* The next section in the list belonging to the BFD, or NULL.  *}
 .  struct bfd_section *next;
 .
 .  {* The next section in the list belonging to the BFD, or NULL.  *}
 .  struct bfd_section *next;


@@ -337,6 +334,10 @@ CODE_FRAGMENT
 .     executables or shared objects. This is for COFF only.  *}
 .#define SEC_COFF_SHARED 0x8000000
 .
 .     executables or shared objects. This is for COFF only.  *}
 .#define SEC_COFF_SHARED 0x8000000
 .

+.  {* This section should be compressed.  This is for ELF linker
+.     internal use only.  *}
+.#define SEC_ELF_COMPRESS 0x8000000
+.

 .  {* When a section with this flag is being linked, then if the size of
 .     the input section is less than a page, it should not cross a page
 .     boundary.  If the size of the input section is one page or more,
 .  {* When a section with this flag is being linked, then if the size of
 .     the input section is less than a page, it should not cross a page
 .     boundary.  If the size of the input section is one page or more,


@@ -344,15 +345,25 @@ CODE_FRAGMENT
 .     TMS320C54X only.  *}
 .#define SEC_TIC54X_BLOCK 0x10000000
 .
 .     TMS320C54X only.  *}
 .#define SEC_TIC54X_BLOCK 0x10000000
 .

+.  {* This section should be renamed.  This is for ELF linker
+.     internal use only.  *}
+.#define SEC_ELF_RENAME 0x10000000
+.

 .  {* Conditionally link this section; do not link if there are no
 .     references found to any symbol in the section.  This is for TI
 .     TMS320C54X only.  *}
 .#define SEC_TIC54X_CLINK 0x20000000
 .
 .  {* Conditionally link this section; do not link if there are no
 .     references found to any symbol in the section.  This is for TI
 .     TMS320C54X only.  *}
 .#define SEC_TIC54X_CLINK 0x20000000
 .

+.  {* This section contains vliw code.  This is for Toshiba MeP only.  *}
+.#define SEC_MEP_VLIW 0x20000000
+.

 .  {* Indicate that section has the no read flag set. This happens
 .     when memory read flag isn't set. *}
 .#define SEC_COFF_NOREAD 0x40000000
 .
 .  {* Indicate that section has the no read flag set. This happens
 .     when memory read flag isn't set. *}
 .#define SEC_COFF_NOREAD 0x40000000
 .

+.  {* Indicate that section has the no read flag set.  *}
+.#define SEC_ELF_NOREAD 0x80000000
+.

 .  {*  End of section flags.  *}
 .
 .  {* Some internal packed boolean fields.  *}
 .  {*  End of section flags.  *}
 .
 .  {* Some internal packed boolean fields.  *}


@@ -388,6 +399,8 @@ CODE_FRAGMENT
 .#define SEC_INFO_TYPE_MERGE     2
 .#define SEC_INFO_TYPE_EH_FRAME  3
 .#define SEC_INFO_TYPE_JUST_SYMS 4
 .#define SEC_INFO_TYPE_MERGE     2
 .#define SEC_INFO_TYPE_EH_FRAME  3
 .#define SEC_INFO_TYPE_JUST_SYMS 4

+.#define SEC_INFO_TYPE_TARGET    5
+.#define SEC_INFO_TYPE_EH_FRAME_ENTRY 6

 .
 .  {* Nonzero if this section uses RELA relocations, rather than REL.  *}
 .  unsigned int use_rela_p:1;
 .
 .  {* Nonzero if this section uses RELA relocations, rather than REL.  *}
 .  unsigned int use_rela_p:1;


@@ -417,7 +430,7 @@ CODE_FRAGMENT
 .      information.  *}
 .  bfd_vma lma;
 .
 .      information.  *}
 .  bfd_vma lma;
 .

-.  {* The size of the section in octets, as it will be output.
+.  {* The size of the section in *octets*, as it will be output.

 .     Contains a value even if the section has no contents (e.g., the
 .     size of <<.bss>>).  *}
 .  bfd_size_type size;
 .     Contains a value even if the section has no contents (e.g., the
 .     size of <<.bss>>).  *}
 .  bfd_size_type size;


@@ -532,20 +545,46 @@ CODE_FRAGMENT
 .} asection;
 .
 .{* Relax table contains information about instructions which can
 .} asection;
 .
 .{* Relax table contains information about instructions which can

-.   be removed by relaxation -- replacing a long address with a 
+.   be removed by relaxation -- replacing a long address with a

 .   short address.  *}
 .struct relax_table {
 .  {* Address where bytes may be deleted. *}
 .  bfd_vma addr;
 .   short address.  *}
 .struct relax_table {
 .  {* Address where bytes may be deleted. *}
 .  bfd_vma addr;

-.  
+.

 .  {* Number of bytes to be deleted.  *}
 .  int size;
 .};
 .
 .  {* Number of bytes to be deleted.  *}
 .  int size;
 .};
 .

+.{* Note: the following are provided as inline functions rather than macros
+.   because not all callers use the return value.  A macro implementation
+.   would use a comma expression, eg: "((ptr)->foo = val, TRUE)" and some
+.   compilers will complain about comma expressions that have no effect.  *}
+.static inline bfd_boolean
+.bfd_set_section_userdata (bfd * abfd ATTRIBUTE_UNUSED, asection * ptr, void * val)
+.{
+.  ptr->userdata = val;
+.  return TRUE;
+.}
+.
+.static inline bfd_boolean
+.bfd_set_section_vma (bfd * abfd ATTRIBUTE_UNUSED, asection * ptr, bfd_vma val)
+.{
+.  ptr->vma = ptr->lma = val;
+.  ptr->user_set_vma = TRUE;
+.  return TRUE;
+.}
+.
+.static inline bfd_boolean
+.bfd_set_section_alignment (bfd * abfd ATTRIBUTE_UNUSED, asection * ptr, unsigned int val)
+.{
+.  ptr->alignment_power = val;
+.  return TRUE;
+.}
+.

 .{* These sections are global, and are managed by BFD.  The application
 .   and target back end are not permitted to change the values in
 .   these sections.  *}
 .{* These sections are global, and are managed by BFD.  The application
 .   and target back end are not permitted to change the values in
 .   these sections.  *}

-.extern asection std_section[4];
+.extern asection _bfd_std_section[4];

 .
 .#define BFD_ABS_SECTION_NAME "*ABS*"
 .#define BFD_UND_SECTION_NAME "*UND*"
 .
 .#define BFD_ABS_SECTION_NAME "*ABS*"
 .#define BFD_UND_SECTION_NAME "*UND*"


@@ -553,13 +592,13 @@ CODE_FRAGMENT
 .#define BFD_IND_SECTION_NAME "*IND*"
 .
 .{* Pointer to the common section.  *}
 .#define BFD_IND_SECTION_NAME "*IND*"
 .
 .{* Pointer to the common section.  *}

-.#define bfd_com_section_ptr (&std_section[0])
+.#define bfd_com_section_ptr (&_bfd_std_section[0])

 .{* Pointer to the undefined section.  *}
 .{* Pointer to the undefined section.  *}

-.#define bfd_und_section_ptr (&std_section[1])
+.#define bfd_und_section_ptr (&_bfd_std_section[1])

 .{* Pointer to the absolute section.  *}
 .{* Pointer to the absolute section.  *}

-.#define bfd_abs_section_ptr (&std_section[2])
+.#define bfd_abs_section_ptr (&_bfd_std_section[2])

 .{* Pointer to the indirect section.  *}
 .{* Pointer to the indirect section.  *}

-.#define bfd_ind_section_ptr (&std_section[3])
+.#define bfd_ind_section_ptr (&_bfd_std_section[3])

 .
 .#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)
 .#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)
 .
 .#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)
 .#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)


@@ -725,9 +764,9 @@ static const asymbol global_syms[] =
 };
 
 #define STD_SECTION(NAME, IDX, FLAGS) \
 };
 
 #define STD_SECTION(NAME, IDX, FLAGS) \

-  BFD_FAKE_SECTION(std_section[IDX], FLAGS, &global_syms[IDX], NAME, IDX)
+  BFD_FAKE_SECTION(_bfd_std_section[IDX], FLAGS, &global_syms[IDX], NAME, IDX)

 
 

-asection std_section[] = {
+asection _bfd_std_section[] = {

   STD_SECTION (BFD_COM_SECTION_NAME, 0, SEC_IS_COMMON),
   STD_SECTION (BFD_UND_SECTION_NAME, 1, 0),
   STD_SECTION (BFD_ABS_SECTION_NAME, 2, 0),
   STD_SECTION (BFD_COM_SECTION_NAME, 0, SEC_IS_COMMON),
   STD_SECTION (BFD_UND_SECTION_NAME, 1, 0),
   STD_SECTION (BFD_ABS_SECTION_NAME, 2, 0),


@@ -785,13 +824,13 @@ _bfd_generic_new_section_hook (bfd *abfd, asection *newsect)
   return TRUE;
 }
 
   return TRUE;
 }
 

+static unsigned int section_id = 0x10;  /* id 0 to 3 used by STD_SECTION.  */
+

 /* Initializes a new section.  NEWSECT->NAME is already set.  */
 
 static asection *
 bfd_section_init (bfd *abfd, asection *newsect)
 {
 /* Initializes a new section.  NEWSECT->NAME is already set.  */
 
 static asection *
 bfd_section_init (bfd *abfd, asection *newsect)
 {

-  static int section_id = 0x10;  /* id 0 to 3 used by STD_SECTION.  */
-

   newsect->id = section_id;
   newsect->index = abfd->section_count;
   newsect->owner = abfd;
   newsect->id = section_id;
   newsect->index = abfd->section_count;
   newsect->owner = abfd;


@@ -835,6 +874,7 @@ bfd_section_list_clear (bfd *abfd)
   abfd->section_count = 0;
   memset (abfd->section_htab.table, 0,
          abfd->section_htab.size * sizeof (struct bfd_hash_entry *));
   abfd->section_count = 0;
   memset (abfd->section_htab.table, 0,
          abfd->section_htab.size * sizeof (struct bfd_hash_entry *));

+  abfd->section_htab.count = 0;

 }
 
 /*
 }
 
 /*


@@ -866,16 +906,18 @@ FUNCTION
        bfd_get_next_section_by_name
 
 SYNOPSIS
        bfd_get_next_section_by_name
 
 SYNOPSIS

-       asection *bfd_get_next_section_by_name (asection *sec);
+       asection *bfd_get_next_section_by_name (bfd *ibfd, asection *sec);

 
 DESCRIPTION
        Given @var{sec} is a section returned by @code{bfd_get_section_by_name},
        return the next most recently created section attached to the same
 
 DESCRIPTION
        Given @var{sec} is a section returned by @code{bfd_get_section_by_name},
        return the next most recently created section attached to the same

-       BFD with the same name.  Return NULL if no such section exists.
+       BFD with the same name, or if no such section exists in the same BFD and
+       IBFD is non-NULL, the next section with the same name in any input
+       BFD following IBFD.  Return NULL on finding no section.

 */
 
 asection *
 */
 
 asection *

-bfd_get_next_section_by_name (asection *sec)
+bfd_get_next_section_by_name (bfd *ibfd, asection *sec)

 {
   struct section_hash_entry *sh;
   const char *name;
 {
   struct section_hash_entry *sh;
   const char *name;


@@ -893,6 +935,16 @@ bfd_get_next_section_by_name (asection *sec)
        && strcmp (sh->root.string, name) == 0)
       return &sh->section;
 
        && strcmp (sh->root.string, name) == 0)
       return &sh->section;
 

+  if (ibfd != NULL)
+    {
+      while ((ibfd = ibfd->link.next) != NULL)
+       {
+         asection *s = bfd_get_section_by_name (ibfd, name);
+         if (s != NULL)
+           return s;
+       }
+    }
+

   return NULL;
 }
 
   return NULL;
 }
 


@@ -914,7 +966,7 @@ bfd_get_linker_section (bfd *abfd, const char *name)
   asection *sec = bfd_get_section_by_name (abfd, name);
 
   while (sec != NULL && (sec->flags & SEC_LINKER_CREATED) == 0)
   asection *sec = bfd_get_section_by_name (abfd, name);
 
   while (sec != NULL && (sec->flags & SEC_LINKER_CREATED) == 0)

-    sec = bfd_get_next_section_by_name (sec);
+    sec = bfd_get_next_section_by_name (NULL, sec);

   return sec;
 }
 
   return sec;
 }
 


@@ -957,14 +1009,11 @@ bfd_get_section_by_name_if (bfd *abfd, const char *name,
     return NULL;
 
   hash = sh->root.hash;
     return NULL;
 
   hash = sh->root.hash;

-  do
-    {
-      if ((*operation) (abfd, &sh->section, user_storage))
-       return &sh->section;
-      sh = (struct section_hash_entry *) sh->root.next;
-    }
-  while (sh != NULL && sh->root.hash == hash
-        && strcmp (sh->root.string, name) == 0);
+  for (; sh != NULL; sh = (struct section_hash_entry *) sh->root.next)
+    if (sh->root.hash == hash
+       && strcmp (sh->root.string, name) == 0
+       && (*operation) (abfd, &sh->section, user_storage))
+      return &sh->section;

 
   return NULL;
 }
 
   return NULL;
 }


@@ -1239,6 +1288,23 @@ bfd_make_section (bfd *abfd, const char *name)
   return bfd_make_section_with_flags (abfd, name, 0);
 }
 
   return bfd_make_section_with_flags (abfd, name, 0);
 }
 

+/*
+FUNCTION
+       bfd_get_next_section_id
+
+SYNOPSIS
+       int bfd_get_next_section_id (void);
+
+DESCRIPTION
+       Returns the id that the next section created will have.
+*/
+
+int
+bfd_get_next_section_id (void)
+{
+  return section_id;
+}
+

 /*
 FUNCTION
        bfd_set_section_flags
 /*
 FUNCTION
        bfd_set_section_flags


@@ -1545,8 +1611,8 @@ bfd_get_section_contents (bfd *abfd,
          bfd_set_error (bfd_error_invalid_operation);
          return FALSE;
        }
          bfd_set_error (bfd_error_invalid_operation);
          return FALSE;
        }

-      
-      memcpy (location, section->contents + offset, (size_t) count);
+
+      memmove (location, section->contents + offset, (size_t) count);

       return TRUE;
     }
 
       return TRUE;
     }