/* Object file "section" support for the BFD library.
- Copyright (C) 1990, 1991, 1992, 1993 Free Software Foundation, Inc.
+ Copyright (C) 1990, 1991, 1992, 1993, 1996 Free Software Foundation, Inc.
Written by Cygnus Support.
This file is part of BFD, the Binary File Descriptor library.
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
-Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
+Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
/*
SECTION
.#define SEC_HAS_CONTENTS 0x200
.
. {* An instruction to the linker to not output the section
-. even if it has information which would normally be written. *}
+. even if it has information which would normally be written. *}
.#define SEC_NEVER_LOAD 0x400
.
-. {* The section is a shared library section. The linker must leave
-. these completely alone, as the vma and size are used when
-. the executable is loaded. *}
-.#define SEC_SHARED_LIBRARY 0x800
+. {* The section is a COFF shared library section. This flag is
+. only for the linker. If this type of section appears in
+. the input file, the linker must copy it to the output file
+. without changing the vma or size. FIXME: Although this
+. was originally intended to be general, it really is COFF
+. specific (and the flag was renamed to indicate this). It
+. might be cleaner to have some more general mechanism to
+. allow the back end to control what the linker does with
+. sections. *}
+.#define SEC_COFF_SHARED_LIBRARY 0x800
.
. {* The section is a common section (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
-. translate to bfd_com_section), but ECOFF has two. *}
+. translate to bfd_com_section_ptr), but ECOFF has two. *}
.#define SEC_IS_COMMON 0x8000
.
. {* The section contains only debugging information. For
. memory if appropriate. *}
.#define SEC_IN_MEMORY 0x20000
.
+. {* The contents of this section are to be excluded by the
+. linker for executable and shared objects unless those
+. objects are to be further relocated. *}
+.#define SEC_EXCLUDE 0x40000
+.
+. {* The contents of this section are to be sorted by the
+. based on the address specified in the associated symbol
+. table. *}
+.#define SEC_SORT_ENTRIES 0x80000
+.
. {* End of section flags. *}
.
. {* The virtual memory address of the section - where it will be
. struct bfd_link_order *link_order_tail;
.} asection ;
.
-.
. {* 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. New code should use the section_ptr macros rather
+. than referring directly to the const sections. The const sections
+. may eventually vanish. *}
.#define BFD_ABS_SECTION_NAME "*ABS*"
.#define BFD_UND_SECTION_NAME "*UND*"
.#define BFD_COM_SECTION_NAME "*COM*"
.#define BFD_IND_SECTION_NAME "*IND*"
.
. {* the absolute section *}
-.extern asection bfd_abs_section;
+.extern const asection bfd_abs_section;
+.#define bfd_abs_section_ptr ((asection *) &bfd_abs_section)
+.#define bfd_is_abs_section(sec) ((sec) == bfd_abs_section_ptr)
. {* Pointer to the undefined section *}
-.extern asection bfd_und_section;
+.extern const asection bfd_und_section;
+.#define bfd_und_section_ptr ((asection *) &bfd_und_section)
+.#define bfd_is_und_section(sec) ((sec) == bfd_und_section_ptr)
. {* Pointer to the common section *}
-.extern asection bfd_com_section;
+.extern const asection bfd_com_section;
+.#define bfd_com_section_ptr ((asection *) &bfd_com_section)
. {* Pointer to the indirect section *}
-.extern asection bfd_ind_section;
-.
-.extern struct symbol_cache_entry *bfd_abs_symbol;
-.extern struct symbol_cache_entry *bfd_com_symbol;
-.extern struct symbol_cache_entry *bfd_und_symbol;
-.extern struct symbol_cache_entry *bfd_ind_symbol;
+.extern const asection bfd_ind_section;
+.#define bfd_ind_section_ptr ((asection *) &bfd_ind_section)
+.#define bfd_is_ind_section(sec) ((sec) == bfd_ind_section_ptr)
+.
+.extern const struct symbol_cache_entry * const bfd_abs_symbol;
+.extern const struct symbol_cache_entry * const bfd_com_symbol;
+.extern const struct symbol_cache_entry * const bfd_und_symbol;
+.extern const struct symbol_cache_entry * const bfd_ind_symbol;
.#define bfd_get_section_size_before_reloc(section) \
. (section->reloc_done ? (abort(),1): (section)->_raw_size)
.#define bfd_get_section_size_after_reloc(section) \
/* These symbols are global, not specific to any BFD. Therefore, anything
that tries to change them is broken, and should be repaired. */
-static CONST asymbol global_syms[] =
+static const asymbol global_syms[] =
{
/* the_bfd, name, value, attr, section [, udata] */
- {0, BFD_COM_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_com_section},
- {0, BFD_UND_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_und_section},
- {0, BFD_ABS_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_abs_section},
- {0, BFD_IND_SECTION_NAME, 0, BSF_SECTION_SYM, &bfd_ind_section},
+ {0, BFD_COM_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_com_section},
+ {0, BFD_UND_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_und_section},
+ {0, BFD_ABS_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_abs_section},
+ {0, BFD_IND_SECTION_NAME, 0, BSF_SECTION_SYM, (asection *) &bfd_ind_section},
};
#define STD_SECTION(SEC, FLAGS, SYM, NAME, IDX) \
- asymbol *SYM = (asymbol *) &global_syms[IDX]; \
- asection SEC = { NAME, 0, 0, FLAGS, 0, 0, (boolean) 0, 0, 0, 0, &SEC,\
- 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, (boolean) 0, \
- (asymbol *) &global_syms[IDX], &SYM, }
-
-STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol, BFD_COM_SECTION_NAME, 0);
+ 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, }
+
+STD_SECTION (bfd_com_section, SEC_IS_COMMON, bfd_com_symbol,
+ BFD_COM_SECTION_NAME, 0);
STD_SECTION (bfd_und_section, 0, bfd_und_symbol, BFD_UND_SECTION_NAME, 1);
STD_SECTION (bfd_abs_section, 0, bfd_abs_symbol, BFD_ABS_SECTION_NAME, 2);
STD_SECTION (bfd_ind_section, 0, bfd_ind_symbol, BFD_IND_SECTION_NAME, 3);
newsect = (asection *) bfd_zalloc (abfd, sizeof (asection));
if (newsect == NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return NULL;
- }
+ return NULL;
newsect->name = name;
newsect->index = abfd->section_count++;
useful for things like relocs which are relative to the base of a
section. */
newsect->symbol = bfd_make_empty_symbol (abfd);
- if (!newsect)
+ if (newsect->symbol == NULL)
return NULL;
newsect->symbol->name = name;
newsect->symbol->value = 0;
<<bfd_error>>.
*/
-sec_ptr
+asection *
bfd_make_section (abfd, name)
bfd *abfd;
CONST char *name;
if (strcmp (name, BFD_ABS_SECTION_NAME) == 0)
{
- return &bfd_abs_section;
+ return bfd_abs_section_ptr;
}
if (strcmp (name, BFD_COM_SECTION_NAME) == 0)
{
- return &bfd_com_section;
+ return bfd_com_section_ptr;
}
if (strcmp (name, BFD_UND_SECTION_NAME) == 0)
{
- return &bfd_und_section;
+ return bfd_und_section_ptr;
}
if (strcmp (name, BFD_IND_SECTION_NAME) == 0)
{
- return &bfd_ind_section;
+ return bfd_ind_section_ptr;
}
while (sect)
PTR user_storage;
{
asection *sect;
- int i = 0;
+ unsigned int i = 0;
for (sect = abfd->sections; sect != NULL; i++, sect = sect->next)
(*operation) (abfd, sect, user_storage);
{
bfd_size_type sz;
- if (!bfd_get_section_flags (abfd, section) & SEC_HAS_CONTENTS)
+ if (!(bfd_get_section_flags (abfd, section) & SEC_HAS_CONTENTS))
{
bfd_set_error (bfd_error_no_contents);
return (false);
return false;
}
sz = bfd_get_section_size_now (abfd, section);
- if (offset > sz
+ if ((bfd_size_type) offset > sz
|| count > sz
|| offset + count > sz)
goto bad_val;
/* Even if reloc_done is true, this function reads unrelocated
contents, so we want the raw size. */
sz = section->_raw_size;
- if (offset > sz || count > sz || offset + count > sz)
+ if ((bfd_size_type) offset > sz || count > sz || offset + count > sz)
goto bad_val;
if (count == 0)
if ((section->flags & SEC_IN_MEMORY) != 0)
{
- memcpy (location, section->contents + offset, count);
+ memcpy (location, section->contents + offset, (size_t) count);
return true;
}
return BFD_SEND (abfd, _bfd_get_section_contents,
(abfd, section, location, offset, count));
}
+
+/*
+FUNCTION
+ bfd_copy_private_section_data
+
+SYNOPSIS
+ boolean bfd_copy_private_section_data(bfd *ibfd, asection *isec, bfd *obfd, asection *osec);
+
+DESCRIPTION
+ Copy private section information from @var{isec} in the BFD
+ @var{ibfd} to the section @var{osec} in the BFD @var{obfd}.
+ Return <<true>> on success, <<false>> on error. Possible error
+ returns are:
+
+ o <<bfd_error_no_memory>> -
+ 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, \
+. (ibfd, isection, obfd, osection))
+*/
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