/* linker.c -- BFD linker routines
- Copyright (C) 1993, 1994, 1995 Free Software Foundation, Inc.
+ Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002
+ 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.
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. */
#include "bfd.h"
#include "sysdep.h"
a.out (in <<aoutx.h>>) and ECOFF (in <<ecoff.c>>). The a.out
routines are used as examples throughout this section.
-@menu
+@menu
@* Creating a Linker Hash Table::
@* Adding Symbols to the Hash Table::
@* Performing the Final Link::
@cindex target vector (_bfd_link_hash_table_create)
The linker routines must create a hash table, which must be
derived from <<struct bfd_link_hash_table>> described in
- <<bfdlink.c>>. @xref{Hash Tables} for information on how to
+ <<bfdlink.c>>. @xref{Hash Tables}, for information on how to
create a derived hash table. This entry point is called using
the target vector of the linker output file.
read the symbol information, the <<_bfd_link_add_symbols>>
routine should save it somewhere attached to the object file
BFD. However, the information should only be saved if the
- <<keep_memory>> field of the <<info>> argument is true, so
+ <<keep_memory>> field of the <<info>> argument is TRUE, so
that the <<-no-keep-memory>> linker switch is effective.
The a.out function which adds symbols from an object file is
is used to further controls which local symbols are included
in the output file. If the value is <<discard_l>>, then all
local symbols which begin with a certain prefix are discarded;
- this prefix is described by the <<lprefix>> and
- <<lprefix_len>> fields of the <<bfd_link_info>> structure.
+ this is controlled by the <<bfd_is_local_label_name>> entry point.
The a.out backend handles symbols by calling
<<aout_link_write_symbols>> on each input BFD and then
file at the end of <<NAME(aout,final_link)>>.
*/
-static struct bfd_hash_entry *generic_link_hash_newfunc
- PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *,
- const char *));
-static boolean generic_link_read_symbols
+static bfd_boolean generic_link_read_symbols
PARAMS ((bfd *));
-static boolean generic_link_add_symbols
- PARAMS ((bfd *, struct bfd_link_info *, boolean collect));
-static boolean generic_link_add_object_symbols
- PARAMS ((bfd *, struct bfd_link_info *, boolean collect));
-static boolean generic_link_check_archive_element_no_collect
- PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
-static boolean generic_link_check_archive_element_collect
- PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded));
-static boolean generic_link_check_archive_element
- PARAMS ((bfd *, struct bfd_link_info *, boolean *pneeded, boolean collect));
-static boolean generic_link_add_symbol_list
+static bfd_boolean generic_link_add_symbols
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean collect));
+static bfd_boolean generic_link_add_object_symbols
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean collect));
+static bfd_boolean generic_link_check_archive_element_no_collect
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *pneeded));
+static bfd_boolean generic_link_check_archive_element_collect
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *pneeded));
+static bfd_boolean generic_link_check_archive_element
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *pneeded,
+ bfd_boolean collect));
+static bfd_boolean generic_link_add_symbol_list
PARAMS ((bfd *, struct bfd_link_info *, bfd_size_type count, asymbol **,
- boolean collect));
+ bfd_boolean collect));
+static bfd *hash_entry_bfd
+ PARAMS ((struct bfd_link_hash_entry *));
static void set_symbol_from_hash
PARAMS ((asymbol *, struct bfd_link_hash_entry *));
-static boolean generic_add_output_symbol
+static bfd_boolean generic_add_output_symbol
PARAMS ((bfd *, size_t *psymalloc, asymbol *));
-static boolean default_fill_link_order
+static bfd_boolean default_data_link_order
PARAMS ((bfd *, struct bfd_link_info *, asection *,
struct bfd_link_order *));
-static boolean default_indirect_link_order
+static bfd_boolean default_indirect_link_order
PARAMS ((bfd *, struct bfd_link_info *, asection *,
- struct bfd_link_order *, boolean));
+ struct bfd_link_order *, bfd_boolean));
/* The link hash table structure is defined in bfdlink.h. It provides
a base hash table which the backend specific hash tables are built
struct bfd_hash_table *table;
const char *string;
{
- struct bfd_link_hash_entry *ret = (struct bfd_link_hash_entry *) entry;
-
/* Allocate the structure if it has not already been allocated by a
subclass. */
- if (ret == (struct bfd_link_hash_entry *) NULL)
- ret = ((struct bfd_link_hash_entry *)
- bfd_hash_allocate (table, sizeof (struct bfd_link_hash_entry)));
- if (ret == (struct bfd_link_hash_entry *) NULL)
+ if (entry == NULL)
{
- bfd_set_error (bfd_error_no_memory);
- return NULL;
+ entry = (struct bfd_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct bfd_link_hash_entry));
+ if (entry == NULL)
+ return entry;
}
/* Call the allocation method of the superclass. */
- ret = ((struct bfd_link_hash_entry *)
- bfd_hash_newfunc ((struct bfd_hash_entry *) ret, table, string));
-
- if (ret)
+ entry = bfd_hash_newfunc (entry, table, string);
+ if (entry)
{
+ struct bfd_link_hash_entry *h = (struct bfd_link_hash_entry *) entry;
+
/* Initialize the local fields. */
- ret->type = bfd_link_hash_new;
- ret->next = NULL;
+ h->type = bfd_link_hash_new;
+ h->next = NULL;
}
- return (struct bfd_hash_entry *) ret;
+ return entry;
}
/* Initialize a link hash table. The BFD argument is the one
responsible for creating this table. */
-boolean
+bfd_boolean
_bfd_link_hash_table_init (table, abfd, newfunc)
struct bfd_link_hash_table *table;
bfd *abfd;
table->creator = abfd->xvec;
table->undefs = NULL;
table->undefs_tail = NULL;
+ table->type = bfd_link_generic_hash_table;
+
return bfd_hash_table_init (&table->table, newfunc);
}
-/* Look up a symbol in a link hash table. If follow is true, we
+/* Look up a symbol in a link hash table. If follow is TRUE, we
follow bfd_link_hash_indirect and bfd_link_hash_warning links to
the real symbol. */
bfd_link_hash_lookup (table, string, create, copy, follow)
struct bfd_link_hash_table *table;
const char *string;
- boolean create;
- boolean copy;
- boolean follow;
+ bfd_boolean create;
+ bfd_boolean copy;
+ bfd_boolean follow;
{
struct bfd_link_hash_entry *ret;
return ret;
}
+/* Look up a symbol in the main linker hash table if the symbol might
+ be wrapped. This should only be used for references to an
+ undefined symbol, not for definitions of a symbol. */
+
+struct bfd_link_hash_entry *
+bfd_wrapped_link_hash_lookup (abfd, info, string, create, copy, follow)
+ bfd *abfd;
+ struct bfd_link_info *info;
+ const char *string;
+ bfd_boolean create;
+ bfd_boolean copy;
+ bfd_boolean follow;
+{
+ bfd_size_type amt;
+
+ if (info->wrap_hash != NULL)
+ {
+ const char *l;
+
+ l = string;
+ if (*l == bfd_get_symbol_leading_char (abfd))
+ ++l;
+
+#undef WRAP
+#define WRAP "__wrap_"
+
+ if (bfd_hash_lookup (info->wrap_hash, l, FALSE, FALSE) != NULL)
+ {
+ char *n;
+ struct bfd_link_hash_entry *h;
+
+ /* This symbol is being wrapped. We want to replace all
+ references to SYM with references to __wrap_SYM. */
+
+ amt = strlen (l) + sizeof WRAP + 1;
+ n = (char *) bfd_malloc (amt);
+ if (n == NULL)
+ return NULL;
+
+ /* Note that symbol_leading_char may be '\0'. */
+ n[0] = bfd_get_symbol_leading_char (abfd);
+ n[1] = '\0';
+ strcat (n, WRAP);
+ strcat (n, l);
+ h = bfd_link_hash_lookup (info->hash, n, create, TRUE, follow);
+ free (n);
+ return h;
+ }
+
+#undef WRAP
+
+#undef REAL
+#define REAL "__real_"
+
+ if (*l == '_'
+ && strncmp (l, REAL, sizeof REAL - 1) == 0
+ && bfd_hash_lookup (info->wrap_hash, l + sizeof REAL - 1,
+ FALSE, FALSE) != NULL)
+ {
+ char *n;
+ struct bfd_link_hash_entry *h;
+
+ /* This is a reference to __real_SYM, where SYM is being
+ wrapped. We want to replace all references to __real_SYM
+ with references to SYM. */
+
+ amt = strlen (l + sizeof REAL - 1) + 2;
+ n = (char *) bfd_malloc (amt);
+ if (n == NULL)
+ return NULL;
+
+ /* Note that symbol_leading_char may be '\0'. */
+ n[0] = bfd_get_symbol_leading_char (abfd);
+ n[1] = '\0';
+ strcat (n, l + sizeof REAL - 1);
+ h = bfd_link_hash_lookup (info->hash, n, create, TRUE, follow);
+ free (n);
+ return h;
+ }
+
+#undef REAL
+ }
+
+ return bfd_link_hash_lookup (info->hash, string, create, copy, follow);
+}
+
/* Traverse a generic link hash table. The only reason this is not a
macro is to do better type checking. This code presumes that an
argument passed as a struct bfd_hash_entry * may be caught as a
struct bfd_link_hash_entry * with no explicit cast required on the
call. */
-void
+void
bfd_link_hash_traverse (table, func, info)
struct bfd_link_hash_table *table;
- boolean (*func) PARAMS ((struct bfd_link_hash_entry *, PTR));
+ bfd_boolean (*func) PARAMS ((struct bfd_link_hash_entry *, PTR));
PTR info;
{
bfd_hash_traverse (&table->table,
- ((boolean (*) PARAMS ((struct bfd_hash_entry *, PTR)))
+ ((bfd_boolean (*) PARAMS ((struct bfd_hash_entry *, PTR)))
func),
info);
}
table->undefs_tail = h;
}
\f
-/* Routine to create an entry in an generic link hash table. */
+/* Routine to create an entry in a generic link hash table. */
-static struct bfd_hash_entry *
-generic_link_hash_newfunc (entry, table, string)
+struct bfd_hash_entry *
+_bfd_generic_link_hash_newfunc (entry, table, string)
struct bfd_hash_entry *entry;
struct bfd_hash_table *table;
const char *string;
{
- struct generic_link_hash_entry *ret =
- (struct generic_link_hash_entry *) entry;
-
/* Allocate the structure if it has not already been allocated by a
subclass. */
- if (ret == (struct generic_link_hash_entry *) NULL)
- ret = ((struct generic_link_hash_entry *)
- bfd_hash_allocate (table, sizeof (struct generic_link_hash_entry)));
- if (ret == (struct generic_link_hash_entry *) NULL)
+ if (entry == NULL)
{
- bfd_set_error (bfd_error_no_memory);
- return NULL;
+ entry = (struct bfd_hash_entry *)
+ bfd_hash_allocate (table, sizeof (struct generic_link_hash_entry));
+ if (entry == NULL)
+ return entry;
}
/* Call the allocation method of the superclass. */
- ret = ((struct generic_link_hash_entry *)
- _bfd_link_hash_newfunc ((struct bfd_hash_entry *) ret,
- table, string));
-
- if (ret)
+ entry = _bfd_link_hash_newfunc (entry, table, string);
+ if (entry)
{
+ struct generic_link_hash_entry *ret;
+
/* Set local fields. */
- ret->written = false;
+ ret = (struct generic_link_hash_entry *) entry;
+ ret->written = FALSE;
ret->sym = NULL;
}
- return (struct bfd_hash_entry *) ret;
+ return entry;
}
-/* Create an generic link hash table. */
+/* Create a generic link hash table. */
struct bfd_link_hash_table *
_bfd_generic_link_hash_table_create (abfd)
bfd *abfd;
{
struct generic_link_hash_table *ret;
+ bfd_size_type amt = sizeof (struct generic_link_hash_table);
- ret = ((struct generic_link_hash_table *)
- malloc (sizeof (struct generic_link_hash_table)));
- if (!ret)
- {
- bfd_set_error (bfd_error_no_memory);
- return (struct bfd_link_hash_table *) NULL;
- }
+ ret = (struct generic_link_hash_table *) bfd_malloc (amt);
+ if (ret == NULL)
+ return (struct bfd_link_hash_table *) NULL;
if (! _bfd_link_hash_table_init (&ret->root, abfd,
- generic_link_hash_newfunc))
+ _bfd_generic_link_hash_newfunc))
{
free (ret);
return (struct bfd_link_hash_table *) NULL;
return &ret->root;
}
+void
+_bfd_generic_link_hash_table_free (hash)
+ struct bfd_link_hash_table *hash;
+{
+ struct generic_link_hash_table *ret
+ = (struct generic_link_hash_table *) hash;
+
+ bfd_hash_table_free (&ret->root.table);
+ free (ret);
+}
+
/* Grab the symbols for an object file when doing a generic link. We
store the symbols in the outsymbols field. We need to keep them
around for the entire link to ensure that we only read them once.
the hash table pointing to different instances of the symbol
structure. */
-static boolean
+static bfd_boolean
generic_link_read_symbols (abfd)
bfd *abfd;
{
- if (abfd->outsymbols == (asymbol **) NULL)
+ if (bfd_get_outsymbols (abfd) == (asymbol **) NULL)
{
long symsize;
long symcount;
symsize = bfd_get_symtab_upper_bound (abfd);
if (symsize < 0)
- return false;
- abfd->outsymbols = (asymbol **) bfd_alloc (abfd, symsize);
- if (abfd->outsymbols == NULL && symsize != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
- symcount = bfd_canonicalize_symtab (abfd, abfd->outsymbols);
+ return FALSE;
+ bfd_get_outsymbols (abfd) =
+ (asymbol **) bfd_alloc (abfd, (bfd_size_type) symsize);
+ if (bfd_get_outsymbols (abfd) == NULL && symsize != 0)
+ return FALSE;
+ symcount = bfd_canonicalize_symtab (abfd, bfd_get_outsymbols (abfd));
if (symcount < 0)
- return false;
- abfd->symcount = symcount;
+ return FALSE;
+ bfd_get_symcount (abfd) = symcount;
}
- return true;
+ return TRUE;
}
\f
/* Generic function to add symbols to from an object file to the
global hash table. This version does not automatically collect
constructors by name. */
-boolean
+bfd_boolean
_bfd_generic_link_add_symbols (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
- return generic_link_add_symbols (abfd, info, false);
+ return generic_link_add_symbols (abfd, info, FALSE);
}
/* Generic function to add symbols from an object file to the global
constructors and destructors; these are approximately those targets
for which gcc uses collect2 and do not support stabs. */
-boolean
+bfd_boolean
_bfd_generic_link_add_symbols_collect (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
{
- return generic_link_add_symbols (abfd, info, true);
+ return generic_link_add_symbols (abfd, info, TRUE);
+}
+
+/* Indicate that we are only retrieving symbol values from this
+ section. We want the symbols to act as though the values in the
+ file are absolute. */
+
+void
+_bfd_generic_link_just_syms (sec, info)
+ asection *sec;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
+{
+ sec->output_section = bfd_abs_section_ptr;
+ sec->output_offset = sec->vma;
}
/* Add symbols from an object file to the global hash table. */
-static boolean
+static bfd_boolean
generic_link_add_symbols (abfd, info, collect)
bfd *abfd;
struct bfd_link_info *info;
- boolean collect;
+ bfd_boolean collect;
{
- boolean ret;
+ bfd_boolean ret;
switch (bfd_get_format (abfd))
{
break;
default:
bfd_set_error (bfd_error_wrong_format);
- ret = false;
+ ret = FALSE;
}
return ret;
/* Add symbols from an object file to the global hash table. */
-static boolean
+static bfd_boolean
generic_link_add_object_symbols (abfd, info, collect)
bfd *abfd;
struct bfd_link_info *info;
- boolean collect;
+ bfd_boolean collect;
{
+ bfd_size_type symcount;
+ struct symbol_cache_entry **outsyms;
+
if (! generic_link_read_symbols (abfd))
- return false;
- return generic_link_add_symbol_list (abfd, info,
- _bfd_generic_link_get_symcount (abfd),
- _bfd_generic_link_get_symbols (abfd),
- collect);
+ return FALSE;
+ symcount = _bfd_generic_link_get_symcount (abfd);
+ outsyms = _bfd_generic_link_get_symbols (abfd);
+ return generic_link_add_symbol_list (abfd, info, symcount, outsyms, collect);
}
\f
/* We build a hash table of all symbols defined in an archive. */
struct archive_list
{
struct archive_list *next;
- int indx;
+ unsigned int indx;
};
/* An entry in an archive hash table. */
static struct bfd_hash_entry *archive_hash_newfunc
PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
-static boolean archive_hash_table_init
+static bfd_boolean archive_hash_table_init
PARAMS ((struct archive_hash_table *,
struct bfd_hash_entry *(*) (struct bfd_hash_entry *,
struct bfd_hash_table *,
ret = ((struct archive_hash_entry *)
bfd_hash_allocate (table, sizeof (struct archive_hash_entry)));
if (ret == (struct archive_hash_entry *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return NULL;
- }
+ return NULL;
/* Call the allocation method of the superclass. */
ret = ((struct archive_hash_entry *)
/* Initialize an archive hash table. */
-static boolean
+static bfd_boolean
archive_hash_table_init (table, newfunc)
struct archive_hash_table *table;
struct bfd_hash_entry *(*newfunc) PARAMS ((struct bfd_hash_entry *,
re-search the symbol table each time a new object file was added.
The CHECKFN argument is used to see if an object file should be
- included. CHECKFN should set *PNEEDED to true if the object file
+ included. CHECKFN should set *PNEEDED to TRUE if the object file
should be included, and must also call the bfd_link_info
add_archive_element callback function and handle adding the symbols
- to the global hash table. CHECKFN should only return false if some
+ to the global hash table. CHECKFN should only return FALSE if some
sort of error occurs.
For some formats, such as a.out, it is possible to look through an
may create new undefined symbols which cause a previously examined
object file to be included. */
-boolean
+bfd_boolean
_bfd_generic_link_add_archive_symbols (abfd, info, checkfn)
bfd *abfd;
struct bfd_link_info *info;
- boolean (*checkfn) PARAMS ((bfd *, struct bfd_link_info *,
- boolean *pneeded));
+ bfd_boolean (*checkfn)
+ PARAMS ((bfd *, struct bfd_link_info *, bfd_boolean *pneeded));
{
carsym *arsyms;
carsym *arsym_end;
register carsym *arsym;
int pass;
struct archive_hash_table arsym_hash;
- int indx;
+ unsigned int indx;
struct bfd_link_hash_entry **pundef;
if (! bfd_has_map (abfd))
{
/* An empty archive is a special case. */
if (bfd_openr_next_archived_file (abfd, (bfd *) NULL) == NULL)
- return true;
- bfd_set_error (bfd_error_no_symbols);
- return false;
+ return TRUE;
+ bfd_set_error (bfd_error_no_armap);
+ return FALSE;
}
arsyms = bfd_ardata (abfd)->symdefs;
/* In order to quickly determine whether an symbol is defined in
this archive, we build a hash table of the symbols. */
if (! archive_hash_table_init (&arsym_hash, archive_hash_newfunc))
- return false;
+ return FALSE;
for (arsym = arsyms, indx = 0; arsym < arsym_end; arsym++, indx++)
{
struct archive_hash_entry *arh;
struct archive_list *l, **pp;
- arh = archive_hash_lookup (&arsym_hash, arsym->name, true, false);
+ arh = archive_hash_lookup (&arsym_hash, arsym->name, TRUE, FALSE);
if (arh == (struct archive_hash_entry *) NULL)
goto error_return;
l = ((struct archive_list *)
}
/* Look for this symbol in the archive symbol map. */
- arh = archive_hash_lookup (&arsym_hash, h->root.string, false, false);
+ arh = archive_hash_lookup (&arsym_hash, h->root.string, FALSE, FALSE);
if (arh == (struct archive_hash_entry *) NULL)
{
- pundef = &(*pundef)->next;
- continue;
+ /* If we haven't found the exact symbol we're looking for,
+ let's look for its import thunk */
+ if (info->pei386_auto_import)
+ {
+ bfd_size_type amt = strlen (h->root.string) + 10;
+ char *buf = (char *) bfd_malloc (amt);
+ if (buf == NULL)
+ return FALSE;
+
+ sprintf (buf, "__imp_%s", h->root.string);
+ arh = archive_hash_lookup (&arsym_hash, buf, FALSE, FALSE);
+ free(buf);
+ }
+ if (arh == (struct archive_hash_entry *) NULL)
+ {
+ pundef = &(*pundef)->next;
+ continue;
+ }
}
-
/* Look at all the objects which define this symbol. */
for (l = arh->defs; l != (struct archive_list *) NULL; l = l->next)
{
bfd *element;
- boolean needed;
+ bfd_boolean needed;
/* If the symbol has gotten defined along the way, quit. */
if (h->type != bfd_link_hash_undefined
/* Save PASS in case we are called again. */
abfd->archive_pass = pass;
- return true;
+ return TRUE;
error_return:
archive_hash_table_free (&arsym_hash);
- return false;
+ return FALSE;
}
\f
/* See if we should include an archive element. This version is used
the symbol name, presumably because we have some other mechanism
for finding them. */
-static boolean
+static bfd_boolean
generic_link_check_archive_element_no_collect (abfd, info, pneeded)
bfd *abfd;
struct bfd_link_info *info;
- boolean *pneeded;
+ bfd_boolean *pneeded;
{
- return generic_link_check_archive_element (abfd, info, pneeded, false);
+ return generic_link_check_archive_element (abfd, info, pneeded, FALSE);
}
/* See if we should include an archive element. This version is used
when we want to automatically collect constructors based on the
symbol name, as collect2 does. */
-static boolean
+static bfd_boolean
generic_link_check_archive_element_collect (abfd, info, pneeded)
bfd *abfd;
struct bfd_link_info *info;
- boolean *pneeded;
+ bfd_boolean *pneeded;
{
- return generic_link_check_archive_element (abfd, info, pneeded, true);
+ return generic_link_check_archive_element (abfd, info, pneeded, TRUE);
}
/* See if we should include an archive element. Optionally collect
constructors. */
-static boolean
+static bfd_boolean
generic_link_check_archive_element (abfd, info, pneeded, collect)
bfd *abfd;
struct bfd_link_info *info;
- boolean *pneeded;
- boolean collect;
+ bfd_boolean *pneeded;
+ bfd_boolean collect;
{
asymbol **pp, **ppend;
- *pneeded = false;
+ *pneeded = FALSE;
if (! generic_link_read_symbols (abfd))
- return false;
+ return FALSE;
pp = _bfd_generic_link_get_symbols (abfd);
ppend = pp + _bfd_generic_link_get_symcount (abfd);
symbol (type bfd_link_hash_undefweak) is not considered to be
a reference when pulling files out of an archive. See the
SVR4 ABI, p. 4-27. */
- h = bfd_link_hash_lookup (info->hash, bfd_asymbol_name (p), false,
- false, true);
+ h = bfd_link_hash_lookup (info->hash, bfd_asymbol_name (p), FALSE,
+ FALSE, TRUE);
if (h == (struct bfd_link_hash_entry *) NULL
|| (h->type != bfd_link_hash_undefined
&& h->type != bfd_link_hash_common))
/* This object file defines this symbol, so pull it in. */
if (! (*info->callbacks->add_archive_element) (info, abfd,
bfd_asymbol_name (p)))
- return false;
+ return FALSE;
symcount = _bfd_generic_link_get_symcount (abfd);
symbols = _bfd_generic_link_get_symbols (abfd);
if (! generic_link_add_symbol_list (abfd, info, symcount,
symbols, collect))
- return false;
- *pneeded = true;
- return true;
+ return FALSE;
+ *pneeded = TRUE;
+ return TRUE;
}
/* P is a common symbol. */
file. This is for the -u option in the linker. */
if (! (*info->callbacks->add_archive_element)
(info, abfd, bfd_asymbol_name (p)))
- return false;
- *pneeded = true;
- return true;
+ return FALSE;
+ *pneeded = TRUE;
+ return TRUE;
}
/* Turn the symbol into a common symbol but do not link in
bfd_hash_allocate (&info->hash->table,
sizeof (struct bfd_link_hash_common_entry)));
if (h->u.c.p == NULL)
- return false;
+ return FALSE;
size = bfd_asymbol_value (p);
h->u.c.size = size;
}
/* This archive element is not needed. */
- return true;
+ return TRUE;
}
/* Add the symbols from an object file to the global hash table. ABFD
is the object file. INFO is the linker information. SYMBOL_COUNT
is the number of symbols. SYMBOLS is the list of symbols. COLLECT
- is true if constructors should be automatically collected by name
+ is TRUE if constructors should be automatically collected by name
as is done by collect2. */
-static boolean
+static bfd_boolean
generic_link_add_symbol_list (abfd, info, symbol_count, symbols, collect)
bfd *abfd;
struct bfd_link_info *info;
bfd_size_type symbol_count;
asymbol **symbols;
- boolean collect;
+ bfd_boolean collect;
{
asymbol **pp, **ppend;
const char *name;
const char *string;
struct generic_link_hash_entry *h;
+ struct bfd_link_hash_entry *bh;
name = bfd_asymbol_name (p);
- if ((p->flags & BSF_INDIRECT) != 0
- || bfd_is_ind_section (p->section))
- string = bfd_asymbol_name ((asymbol *) p->value);
- else if ((p->flags & BSF_WARNING) != 0)
+ if (((p->flags & BSF_INDIRECT) != 0
+ || bfd_is_ind_section (p->section))
+ && pp + 1 < ppend)
+ {
+ pp++;
+ string = bfd_asymbol_name (*pp);
+ }
+ else if ((p->flags & BSF_WARNING) != 0
+ && pp + 1 < ppend)
{
/* The name of P is actually the warning string, and the
- value is actually a pointer to the symbol to warn
- about. */
+ next symbol is the one to warn about. */
string = name;
- name = bfd_asymbol_name ((asymbol *) p->value);
+ pp++;
+ name = bfd_asymbol_name (*pp);
}
else
string = NULL;
- h = NULL;
+ bh = NULL;
if (! (_bfd_generic_link_add_one_symbol
(info, abfd, name, p->flags, bfd_get_section (p),
- p->value, string, false, collect,
- (struct bfd_link_hash_entry **) &h)))
- return false;
+ p->value, string, FALSE, collect, &bh)))
+ return FALSE;
+ h = (struct generic_link_hash_entry *) bh;
/* If this is a constructor symbol, and the linker didn't do
anything with it, then we want to just pass the symbol
if (bfd_is_com_section (bfd_get_section (p)))
p->flags |= BSF_OLD_COMMON;
}
-
- /* Store a back pointer from the symbol to the hash
- table entry for the benefit of relaxation code until
- it gets rewritten to not use asymbol structures.
- Setting this is also used to check whether these
- symbols were set up by the generic linker. */
- p->udata.p = (PTR) h;
}
+
+ /* Store a back pointer from the symbol to the hash
+ table entry for the benefit of relaxation code until
+ it gets rewritten to not use asymbol structures.
+ Setting this is also used to check whether these
+ symbols were set up by the generic linker. */
+ p->udata.p = (PTR) h;
}
}
- return true;
+ return TRUE;
}
\f
/* We use a state table to deal with adding symbols from an object
enum link_action
{
- FAIL, /* Abort. */
+ FAIL, /* Abort. */
UND, /* Mark symbol undefined. */
WEAK, /* Mark symbol weak undefined. */
DEF, /* Mark symbol defined. */
static const enum link_action link_action[8][8] =
{
/* current\prev new undef undefw def defw com indr warn */
- /* UNDEF_ROW */ {UND, NOACT, NOACT, REF, REF, NOACT, REFC, WARNC },
+ /* UNDEF_ROW */ {UND, NOACT, UND, REF, REF, NOACT, REFC, WARNC },
/* UNDEFW_ROW */ {WEAK, NOACT, NOACT, REF, REF, NOACT, REFC, WARNC },
/* DEF_ROW */ {DEF, DEF, DEF, MDEF, DEF, CDEF, MDEF, CYCLE },
/* DEFW_ROW */ {DEFW, DEFW, DEFW, NOACT, NOACT, NOACT, NOACT, CYCLE },
- /* COMMON_ROW */ {COM, COM, COM, CREF, CREF, BIG, CREF, WARNC },
+ /* COMMON_ROW */ {COM, COM, COM, CREF, COM, BIG, REFC, WARNC },
/* INDR_ROW */ {IND, IND, IND, MDEF, IND, CIND, MIND, CYCLE },
- /* WARN_ROW */ {MWARN, WARN, WARN, CWARN, CWARN, WARN, CWARN, CYCLE },
+ /* WARN_ROW */ {MWARN, WARN, WARN, CWARN, CWARN, WARN, CWARN, NOACT },
/* SET_ROW */ {SET, SET, SET, SET, SET, SET, CYCLE, CYCLE }
};
Adding an entry to a set does not count as a reference to a set,
and no warning is issued (SET_ROW/warn). */
+/* Return the BFD in which a hash entry has been defined, if known. */
+
+static bfd *
+hash_entry_bfd (h)
+ struct bfd_link_hash_entry *h;
+{
+ while (h->type == bfd_link_hash_warning)
+ h = h->u.i.link;
+ switch (h->type)
+ {
+ default:
+ return NULL;
+ case bfd_link_hash_undefined:
+ case bfd_link_hash_undefweak:
+ return h->u.undef.abfd;
+ case bfd_link_hash_defined:
+ case bfd_link_hash_defweak:
+ return h->u.def.section->owner;
+ case bfd_link_hash_common:
+ return h->u.c.p->section->owner;
+ }
+ /*NOTREACHED*/
+}
+
/* Add a symbol to the global hash table.
ABFD is the BFD the symbol comes from.
NAME is the name of the symbol.
STRING is used for either an indirect symbol, in which case it is
the name of the symbol to indirect to, or a warning symbol, in
which case it is the warning string.
- COPY is true if NAME or STRING must be copied into locally
+ COPY is TRUE if NAME or STRING must be copied into locally
allocated memory if they need to be saved.
- COLLECT is true if we should automatically collect gcc constructor
+ COLLECT is TRUE if we should automatically collect gcc constructor
or destructor names as collect2 does.
HASHP, if not NULL, is a place to store the created hash table
entry; if *HASHP is not NULL, the caller has already looked up
- the hash table entry, and stored it in *HASHP. */
+ the hash table entry, and stored it in *HASHP. */
-boolean
+bfd_boolean
_bfd_generic_link_add_one_symbol (info, abfd, name, flags, section, value,
string, copy, collect, hashp)
struct bfd_link_info *info;
asection *section;
bfd_vma value;
const char *string;
- boolean copy;
- boolean collect;
+ bfd_boolean copy;
+ bfd_boolean collect;
struct bfd_link_hash_entry **hashp;
{
enum link_row row;
struct bfd_link_hash_entry *h;
- boolean cycle;
+ bfd_boolean cycle;
if (bfd_is_ind_section (section)
|| (flags & BSF_INDIRECT) != 0)
row = DEF_ROW;
if (hashp != NULL && *hashp != NULL)
- {
- h = *hashp;
- BFD_ASSERT (strcmp (h->root.string, name) == 0);
- }
+ h = *hashp;
else
{
- h = bfd_link_hash_lookup (info->hash, name, true, copy, false);
+ if (row == UNDEF_ROW || row == UNDEFW_ROW)
+ h = bfd_wrapped_link_hash_lookup (abfd, info, name, TRUE, copy, FALSE);
+ else
+ h = bfd_link_hash_lookup (info->hash, name, TRUE, copy, FALSE);
if (h == NULL)
{
if (hashp != NULL)
*hashp = NULL;
- return false;
+ return FALSE;
}
}
- if (info->notice_hash != (struct bfd_hash_table *) NULL
- && (bfd_hash_lookup (info->notice_hash, name, false, false)
- != (struct bfd_hash_entry *) NULL))
+ if (info->notice_all
+ || (info->notice_hash != (struct bfd_hash_table *) NULL
+ && (bfd_hash_lookup (info->notice_hash, name, FALSE, FALSE)
+ != (struct bfd_hash_entry *) NULL)))
{
- if (! (*info->callbacks->notice) (info, name, abfd, section, value))
- return false;
+ if (! (*info->callbacks->notice) (info, h->root.string, abfd, section,
+ value))
+ return FALSE;
}
if (hashp != (struct bfd_link_hash_entry **) NULL)
{
enum link_action action;
- cycle = false;
+ cycle = FALSE;
action = link_action[(int) row][(int) h->type];
switch (action)
{
previously common. */
BFD_ASSERT (h->type == bfd_link_hash_common);
if (! ((*info->callbacks->multiple_common)
- (info, name,
+ (info, h->root.string,
h->u.c.p->section->owner, bfd_link_hash_common, h->u.c.size,
abfd, bfd_link_hash_defined, (bfd_vma) 0)))
- return false;
+ return FALSE;
/* Fall through. */
case DEF:
case DEFW:
{
- enum bfd_link_order_type oldtype;
+ enum bfd_link_hash_type oldtype;
/* Define a symbol. */
oldtype = h->type;
abort ();
if (! ((*info->callbacks->constructor)
- (info,
- c == 'I' ? true : false,
- name, abfd, section, value)))
- return false;
+ (info, c == 'I',
+ h->root.string, abfd, section, value)))
+ return FALSE;
}
}
}
bfd_hash_allocate (&info->hash->table,
sizeof (struct bfd_link_hash_common_entry)));
if (h->u.c.p == NULL)
- return false;
+ return FALSE;
h->u.c.size = value;
case BIG:
/* We have found a common definition for a symbol which
already had a common definition. Use the maximum of the
- two sizes. */
+ two sizes, and use the section required by the larger symbol. */
BFD_ASSERT (h->type == bfd_link_hash_common);
if (! ((*info->callbacks->multiple_common)
- (info, name,
+ (info, h->root.string,
h->u.c.p->section->owner, bfd_link_hash_common, h->u.c.size,
abfd, bfd_link_hash_common, value)))
- return false;
+ return FALSE;
if (value > h->u.c.size)
{
unsigned int power;
if (power > 4)
power = 4;
h->u.c.p->alignment_power = power;
+
+ /* Some systems have special treatment for small commons,
+ hence we want to select the section used by the larger
+ symbol. This makes sure the symbol does not go in a
+ small common section if it is now too large. */
+ if (section == bfd_com_section_ptr)
+ {
+ h->u.c.p->section
+ = bfd_make_section_old_way (abfd, "COMMON");
+ h->u.c.p->section->flags = SEC_ALLOC;
+ }
+ else if (section->owner != abfd)
+ {
+ h->u.c.p->section
+ = bfd_make_section_old_way (abfd, section->name);
+ h->u.c.p->section->flags = SEC_ALLOC;
+ }
+ else
+ h->u.c.p->section = section;
}
break;
else
obfd = NULL;
if (! ((*info->callbacks->multiple_common)
- (info, name, obfd, h->type, (bfd_vma) 0,
+ (info, h->root.string, obfd, h->type, (bfd_vma) 0,
abfd, bfd_link_hash_common, value)))
- return false;
+ return FALSE;
}
break;
/* Fall through. */
case MDEF:
/* Handle a multiple definition. */
- {
- asection *msec;
- bfd_vma mval;
+ if (!info->allow_multiple_definition)
+ {
+ asection *msec = NULL;
+ bfd_vma mval = 0;
- switch (h->type)
- {
- case bfd_link_hash_defined:
- msec = h->u.def.section;
- mval = h->u.def.value;
- break;
- case bfd_link_hash_indirect:
- msec = bfd_ind_section_ptr;
- mval = 0;
- break;
- default:
- abort ();
- }
+ switch (h->type)
+ {
+ case bfd_link_hash_defined:
+ msec = h->u.def.section;
+ mval = h->u.def.value;
+ break;
+ case bfd_link_hash_indirect:
+ msec = bfd_ind_section_ptr;
+ mval = 0;
+ break;
+ default:
+ abort ();
+ }
- /* Ignore a redefinition of an absolute symbol to the same
- value; it's harmless. */
- if (h->type == bfd_link_hash_defined
- && bfd_is_abs_section (msec)
- && bfd_is_abs_section (section)
- && value == mval)
- break;
+ /* Ignore a redefinition of an absolute symbol to the
+ same value; it's harmless. */
+ if (h->type == bfd_link_hash_defined
+ && bfd_is_abs_section (msec)
+ && bfd_is_abs_section (section)
+ && value == mval)
+ break;
- if (! ((*info->callbacks->multiple_definition)
- (info, name, msec->owner, msec, mval, abfd, section,
- value)))
- return false;
- }
+ if (! ((*info->callbacks->multiple_definition)
+ (info, h->root.string, msec->owner, msec, mval,
+ abfd, section, value)))
+ return FALSE;
+ }
break;
case CIND:
/* Create an indirect symbol from an existing common symbol. */
BFD_ASSERT (h->type == bfd_link_hash_common);
if (! ((*info->callbacks->multiple_common)
- (info, name,
+ (info, h->root.string,
h->u.c.p->section->owner, bfd_link_hash_common, h->u.c.size,
abfd, bfd_link_hash_indirect, (bfd_vma) 0)))
- return false;
+ return FALSE;
/* Fall through. */
case IND:
/* Create an indirect symbol. */
/* STRING is the name of the symbol we want to indirect
to. */
- inh = bfd_link_hash_lookup (info->hash, string, true, copy,
- false);
+ inh = bfd_wrapped_link_hash_lookup (abfd, info, string, TRUE,
+ copy, FALSE);
if (inh == (struct bfd_link_hash_entry *) NULL)
- return false;
+ return FALSE;
+ if (inh->type == bfd_link_hash_indirect
+ && inh->u.i.link == h)
+ {
+ (*_bfd_error_handler)
+ (_("%s: indirect symbol `%s' to `%s' is a loop"),
+ bfd_archive_filename (abfd), name, string);
+ bfd_set_error (bfd_error_invalid_operation);
+ return FALSE;
+ }
if (inh->type == bfd_link_hash_new)
{
inh->type = bfd_link_hash_undefined;
if (h->type != bfd_link_hash_new)
{
row = UNDEF_ROW;
- cycle = true;
+ cycle = TRUE;
}
h->type = bfd_link_hash_indirect;
/* Add an entry to a set. */
if (! (*info->callbacks->add_to_set) (info, h, BFD_RELOC_CTOR,
abfd, section, value))
- return false;
+ return FALSE;
break;
case WARNC:
/* Issue a warning and cycle. */
if (h->u.i.warning != NULL)
{
- if (! (*info->callbacks->warning) (info, h->u.i.warning))
- return false;
+ if (! (*info->callbacks->warning) (info, h->u.i.warning,
+ h->root.string, abfd,
+ (asection *) NULL,
+ (bfd_vma) 0))
+ return FALSE;
/* Only issue a warning once. */
h->u.i.warning = NULL;
}
case CYCLE:
/* Try again with the referenced symbol. */
h = h->u.i.link;
- cycle = true;
+ cycle = TRUE;
break;
case REFC:
if (h->next == NULL && info->hash->undefs_tail != h)
h->next = h;
h = h->u.i.link;
- cycle = true;
+ cycle = TRUE;
break;
case WARN:
/* Issue a warning. */
- if (! (*info->callbacks->warning) (info, string))
- return false;
+ if (! (*info->callbacks->warning) (info, string, h->root.string,
+ hash_entry_bfd (h),
+ (asection *) NULL, (bfd_vma) 0))
+ return FALSE;
break;
case CWARN:
ensure this. */
if (h->next != NULL || info->hash->undefs_tail == h)
{
- if (! (*info->callbacks->warning) (info, string))
- return false;
+ if (! (*info->callbacks->warning) (info, string, h->root.string,
+ hash_entry_bfd (h),
+ (asection *) NULL,
+ (bfd_vma) 0))
+ return FALSE;
break;
}
/* Fall through. */
/* STRING is the warning to give. */
sub = ((struct bfd_link_hash_entry *)
- bfd_hash_allocate (&info->hash->table,
- sizeof (struct bfd_link_hash_entry)));
- if (!sub)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ ((*info->hash->table.newfunc)
+ ((struct bfd_hash_entry *) NULL, &info->hash->table,
+ h->root.string)));
+ if (sub == NULL)
+ return FALSE;
*sub = *h;
- h->type = bfd_link_hash_warning;
- h->u.i.link = sub;
+ sub->type = bfd_link_hash_warning;
+ sub->u.i.link = h;
if (! copy)
- h->u.i.warning = string;
+ sub->u.i.warning = string;
else
{
char *w;
+ size_t len = strlen (string) + 1;
- w = bfd_hash_allocate (&info->hash->table,
- strlen (string) + 1);
- strcpy (w, string);
- h->u.i.warning = w;
+ w = bfd_hash_allocate (&info->hash->table, len);
+ if (w == NULL)
+ return FALSE;
+ memcpy (w, string, len);
+ sub->u.i.warning = w;
}
+
+ bfd_hash_replace (&info->hash->table,
+ (struct bfd_hash_entry *) h,
+ (struct bfd_hash_entry *) sub);
+ if (hashp != NULL)
+ *hashp = sub;
}
break;
}
}
while (cycle);
- return true;
+ return TRUE;
}
\f
/* Generic final link routine. */
-boolean
+bfd_boolean
_bfd_generic_final_link (abfd, info)
bfd *abfd;
struct bfd_link_info *info;
size_t outsymalloc;
struct generic_write_global_symbol_info wginfo;
- abfd->outsymbols = (asymbol **) NULL;
- abfd->symcount = 0;
+ bfd_get_outsymbols (abfd) = (asymbol **) NULL;
+ bfd_get_symcount (abfd) = 0;
outsymalloc = 0;
+ /* Mark all sections which will be included in the output file. */
+ for (o = abfd->sections; o != NULL; o = o->next)
+ for (p = o->link_order_head; p != NULL; p = p->next)
+ if (p->type == bfd_indirect_link_order)
+ p->u.indirect.section->linker_mark = TRUE;
+
/* Build the output symbol table. */
for (sub = info->input_bfds; sub != (bfd *) NULL; sub = sub->link_next)
if (! _bfd_generic_link_output_symbols (abfd, sub, info, &outsymalloc))
- return false;
+ return FALSE;
/* Accumulate the global symbols. */
wginfo.info = info;
_bfd_generic_link_write_global_symbol,
(PTR) &wginfo);
+ /* Make sure we have a trailing NULL pointer on OUTSYMBOLS. We
+ shouldn't really need one, since we have SYMCOUNT, but some old
+ code still expects one. */
+ if (! generic_add_output_symbol (abfd, &outsymalloc, NULL))
+ return FALSE;
+
if (info->relocateable)
{
/* Allocate space for the output relocs for each section. */
relsize = bfd_get_reloc_upper_bound (input_bfd,
input_section);
if (relsize < 0)
- return false;
- relocs = (arelent **) malloc ((size_t) relsize);
+ return FALSE;
+ relocs = (arelent **) bfd_malloc ((bfd_size_type) relsize);
if (!relocs && relsize != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return FALSE;
symbols = _bfd_generic_link_get_symbols (input_bfd);
reloc_count = bfd_canonicalize_reloc (input_bfd,
input_section,
relocs,
symbols);
if (reloc_count < 0)
- return false;
- BFD_ASSERT (reloc_count == input_section->reloc_count);
+ return FALSE;
+ BFD_ASSERT ((unsigned long) reloc_count
+ == input_section->reloc_count);
o->reloc_count += reloc_count;
free (relocs);
}
}
if (o->reloc_count > 0)
{
- o->orelocation = ((arelent **)
- bfd_alloc (abfd,
- (o->reloc_count
- * sizeof (arelent *))));
+ bfd_size_type amt;
+
+ amt = o->reloc_count;
+ amt *= sizeof (arelent *);
+ o->orelocation = (arelent **) bfd_alloc (abfd, amt);
if (!o->orelocation)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return FALSE;
o->flags |= SEC_RELOC;
/* Reset the count so that it can be used as an index
when putting in the output relocs. */
case bfd_section_reloc_link_order:
case bfd_symbol_reloc_link_order:
if (! _bfd_generic_reloc_link_order (abfd, info, o, p))
- return false;
+ return FALSE;
break;
case bfd_indirect_link_order:
- if (! default_indirect_link_order (abfd, info, o, p, true))
- return false;
+ if (! default_indirect_link_order (abfd, info, o, p, TRUE))
+ return FALSE;
break;
default:
if (! _bfd_default_link_order (abfd, info, o, p))
- return false;
+ return FALSE;
break;
}
}
}
- return true;
+ return TRUE;
}
/* Add an output symbol to the output BFD. */
-static boolean
+static bfd_boolean
generic_add_output_symbol (output_bfd, psymalloc, sym)
bfd *output_bfd;
size_t *psymalloc;
asymbol *sym;
{
- if (output_bfd->symcount >= *psymalloc)
+ if (bfd_get_symcount (output_bfd) >= *psymalloc)
{
asymbol **newsyms;
+ bfd_size_type amt;
if (*psymalloc == 0)
*psymalloc = 124;
else
*psymalloc *= 2;
- if (output_bfd->outsymbols == (asymbol **) NULL)
- newsyms = (asymbol **) malloc (*psymalloc * sizeof (asymbol *));
- else
- newsyms = (asymbol **) realloc (output_bfd->outsymbols,
- *psymalloc * sizeof (asymbol *));
+ amt = *psymalloc;
+ amt *= sizeof (asymbol *);
+ newsyms = (asymbol **) bfd_realloc (bfd_get_outsymbols (output_bfd), amt);
if (newsyms == (asymbol **) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
- output_bfd->outsymbols = newsyms;
+ return FALSE;
+ bfd_get_outsymbols (output_bfd) = newsyms;
}
- output_bfd->outsymbols[output_bfd->symcount] = sym;
- ++output_bfd->symcount;
+ bfd_get_outsymbols (output_bfd) [bfd_get_symcount (output_bfd)] = sym;
+ if (sym != NULL)
+ ++ bfd_get_symcount (output_bfd);
- return true;
+ return TRUE;
}
/* Handle the symbols for an input BFD. */
-boolean
+bfd_boolean
_bfd_generic_link_output_symbols (output_bfd, input_bfd, info, psymalloc)
bfd *output_bfd;
bfd *input_bfd;
asymbol **sym_end;
if (! generic_link_read_symbols (input_bfd))
- return false;
+ return FALSE;
/* Create a filename symbol if we are supposed to. */
if (info->create_object_symbols_section != (asection *) NULL)
newsym = bfd_make_empty_symbol (input_bfd);
if (!newsym)
- return false;
+ return FALSE;
newsym->name = input_bfd->filename;
newsym->value = 0;
newsym->flags = BSF_LOCAL | BSF_FILE;
if (! generic_add_output_symbol (output_bfd, psymalloc,
newsym))
- return false;
+ return FALSE;
break;
}
{
asymbol *sym;
struct generic_link_hash_entry *h;
- boolean output;
+ bfd_boolean output;
h = (struct generic_link_hash_entry *) NULL;
sym = *sym_ptr;
the relocs in the output format being used. */
h = NULL;
}
+ else if (bfd_is_und_section (bfd_get_section (sym)))
+ h = ((struct generic_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (output_bfd, info,
+ bfd_asymbol_name (sym),
+ FALSE, FALSE, TRUE));
else
h = _bfd_generic_link_hash_lookup (_bfd_generic_hash_table (info),
bfd_asymbol_name (sym),
- false, false, true);
+ FALSE, FALSE, TRUE);
if (h != (struct generic_link_hash_entry *) NULL)
{
/* This switch is straight from the old code in
write_file_locals in ldsym.c. */
- if (info->strip == strip_some
- && (bfd_hash_lookup (info->keep_hash, bfd_asymbol_name (sym),
- false, false)
- == (struct bfd_hash_entry *) NULL))
- output = false;
+ if (info->strip == strip_all
+ || (info->strip == strip_some
+ && (bfd_hash_lookup (info->keep_hash, bfd_asymbol_name (sym),
+ FALSE, FALSE)
+ == (struct bfd_hash_entry *) NULL)))
+ output = FALSE;
else if ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0)
{
/* If this symbol is marked as occurring now, rather
better way. */
if (bfd_asymbol_bfd (sym) == input_bfd
&& (sym->flags & BSF_NOT_AT_END) != 0)
- output = true;
+ output = TRUE;
else
- output = false;
+ output = FALSE;
}
else if (bfd_is_ind_section (sym->section))
- output = false;
+ output = FALSE;
else if ((sym->flags & BSF_DEBUGGING) != 0)
{
if (info->strip == strip_none)
- output = true;
+ output = TRUE;
else
- output = false;
+ output = FALSE;
}
else if (bfd_is_und_section (sym->section)
|| bfd_is_com_section (sym->section))
- output = false;
+ output = FALSE;
else if ((sym->flags & BSF_LOCAL) != 0)
{
if ((sym->flags & BSF_WARNING) != 0)
- output = false;
+ output = FALSE;
else
{
switch (info->discard)
{
default:
case discard_all:
- output = false;
+ output = FALSE;
break;
+ case discard_sec_merge:
+ output = TRUE;
+ if (info->relocateable
+ || ! (sym->section->flags & SEC_MERGE))
+ break;
+ /* FALLTHROUGH */
case discard_l:
- if (bfd_asymbol_name (sym)[0] == info->lprefix[0]
- && (info->lprefix_len == 1
- || strncmp (bfd_asymbol_name (sym), info->lprefix,
- info->lprefix_len) == 0))
- output = false;
+ if (bfd_is_local_label (input_bfd, sym))
+ output = FALSE;
else
- output = true;
+ output = TRUE;
break;
case discard_none:
- output = true;
+ output = TRUE;
break;
}
}
else if ((sym->flags & BSF_CONSTRUCTOR))
{
if (info->strip != strip_all)
- output = true;
+ output = TRUE;
else
- output = false;
+ output = FALSE;
}
else
abort ();
+ /* If this symbol is in a section which is not being included
+ in the output file, then we don't want to output the symbol.
+
+ Gross. .bss and similar sections won't have the linker_mark
+ field set. */
+ if ((sym->section->flags & SEC_HAS_CONTENTS) != 0
+ && ! sym->section->linker_mark)
+ output = FALSE;
+
if (output)
{
if (! generic_add_output_symbol (output_bfd, psymalloc, sym))
- return false;
+ return FALSE;
if (h != (struct generic_link_hash_entry *) NULL)
- h->written = true;
+ h->written = TRUE;
}
}
- return true;
+ return TRUE;
}
/* Set the section and value of a generic BFD symbol based on a linker
switch (h->type)
{
default:
- case bfd_link_hash_new:
abort ();
+ break;
+ case bfd_link_hash_new:
+ /* This can happen when a constructor symbol is seen but we are
+ not building constructors. */
+ if (sym->section != NULL)
+ {
+ BFD_ASSERT ((sym->flags & BSF_CONSTRUCTOR) != 0);
+ }
+ else
+ {
+ sym->flags |= BSF_CONSTRUCTOR;
+ sym->section = bfd_abs_section_ptr;
+ sym->value = 0;
+ }
+ break;
case bfd_link_hash_undefined:
sym->section = bfd_und_section_ptr;
sym->value = 0;
/* Write out a global symbol, if it hasn't already been written out.
This is called for each symbol in the hash table. */
-boolean
+bfd_boolean
_bfd_generic_link_write_global_symbol (h, data)
struct generic_link_hash_entry *h;
PTR data;
(struct generic_write_global_symbol_info *) data;
asymbol *sym;
+ if (h->root.type == bfd_link_hash_warning)
+ h = (struct generic_link_hash_entry *) h->root.u.i.link;
+
if (h->written)
- return true;
+ return TRUE;
- h->written = true;
+ h->written = TRUE;
if (wginfo->info->strip == strip_all
|| (wginfo->info->strip == strip_some
&& bfd_hash_lookup (wginfo->info->keep_hash, h->root.root.string,
- false, false) == NULL))
- return true;
+ FALSE, FALSE) == NULL))
+ return TRUE;
if (h->sym != (asymbol *) NULL)
- {
- sym = h->sym;
- BFD_ASSERT (strcmp (bfd_asymbol_name (sym), h->root.root.string) == 0);
- }
+ sym = h->sym;
else
{
sym = bfd_make_empty_symbol (wginfo->output_bfd);
if (!sym)
- return false;
+ return FALSE;
sym->name = h->root.root.string;
sym->flags = 0;
}
abort ();
}
- return true;
+ return TRUE;
}
/* Create a relocation. */
-boolean
+bfd_boolean
_bfd_generic_reloc_link_order (abfd, info, sec, link_order)
bfd *abfd;
struct bfd_link_info *info;
if (sec->orelocation == (arelent **) NULL)
abort ();
- r = (arelent *) bfd_alloc (abfd, sizeof (arelent));
+ r = (arelent *) bfd_alloc (abfd, (bfd_size_type) sizeof (arelent));
if (r == (arelent *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
-
+ return FALSE;
+
r->address = link_order->offset;
r->howto = bfd_reloc_type_lookup (abfd, link_order->u.reloc.p->reloc);
if (r->howto == 0)
{
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
/* Get the symbol to use for the relocation. */
{
struct generic_link_hash_entry *h;
- h = _bfd_generic_link_hash_lookup (_bfd_generic_hash_table (info),
+ h = ((struct generic_link_hash_entry *)
+ bfd_wrapped_link_hash_lookup (abfd, info,
link_order->u.reloc.p->u.name,
- false, false, true);
+ FALSE, FALSE, TRUE));
if (h == (struct generic_link_hash_entry *) NULL
|| ! h->written)
{
if (! ((*info->callbacks->unattached_reloc)
(info, link_order->u.reloc.p->u.name,
(bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
- return false;
+ return FALSE;
bfd_set_error (bfd_error_bad_value);
- return false;
+ return FALSE;
}
r->sym_ptr_ptr = &h->sym;
}
bfd_size_type size;
bfd_reloc_status_type rstat;
bfd_byte *buf;
- boolean ok;
+ bfd_boolean ok;
+ file_ptr loc;
size = bfd_get_reloc_size (r->howto);
buf = (bfd_byte *) bfd_zmalloc (size);
if (buf == (bfd_byte *) NULL)
- {
- bfd_set_error (bfd_error_no_memory);
- return false;
- }
+ return FALSE;
rstat = _bfd_relocate_contents (r->howto, abfd,
- link_order->u.reloc.p->addend, buf);
+ (bfd_vma) link_order->u.reloc.p->addend,
+ buf);
switch (rstat)
{
case bfd_reloc_ok:
(bfd *) NULL, (asection *) NULL, (bfd_vma) 0)))
{
free (buf);
- return false;
+ return FALSE;
}
break;
}
- ok = bfd_set_section_contents (abfd, sec, (PTR) buf,
- (file_ptr) link_order->offset, size);
+ loc = link_order->offset * bfd_octets_per_byte (abfd);
+ ok = bfd_set_section_contents (abfd, sec, (PTR) buf, loc,
+ (bfd_size_type) size);
free (buf);
if (! ok)
- return false;
+ return FALSE;
r->addend = 0;
}
sec->orelocation[sec->reloc_count] = r;
++sec->reloc_count;
- return true;
+ return TRUE;
}
\f
/* Allocate a new link_order for a section. */
bfd *abfd;
asection *section;
{
+ bfd_size_type amt = sizeof (struct bfd_link_order);
struct bfd_link_order *new;
- new = ((struct bfd_link_order *)
- bfd_alloc_by_size_t (abfd, sizeof (struct bfd_link_order)));
+ new = (struct bfd_link_order *) bfd_zalloc (abfd, amt);
if (!new)
- {
- bfd_set_error (bfd_error_no_memory);
- return NULL;
- }
+ return NULL;
new->type = bfd_undefined_link_order;
- new->offset = 0;
- new->size = 0;
- new->next = (struct bfd_link_order *) NULL;
if (section->link_order_tail != (struct bfd_link_order *) NULL)
section->link_order_tail->next = new;
the reloc_link_order types here, since they depend upon the details
of how the particular backends generates relocs. */
-boolean
+bfd_boolean
_bfd_default_link_order (abfd, info, sec, link_order)
bfd *abfd;
struct bfd_link_info *info;
abort ();
case bfd_indirect_link_order:
return default_indirect_link_order (abfd, info, sec, link_order,
- false);
- case bfd_fill_link_order:
- return default_fill_link_order (abfd, info, sec, link_order);
+ FALSE);
case bfd_data_link_order:
- return bfd_set_section_contents (abfd, sec,
- (PTR) link_order->u.data.contents,
- (file_ptr) link_order->offset,
- link_order->size);
+ return default_data_link_order (abfd, info, sec, link_order);
}
}
-/* Default routine to handle a bfd_fill_link_order. */
+/* Default routine to handle a bfd_data_link_order. */
-/*ARGSUSED*/
-static boolean
-default_fill_link_order (abfd, info, sec, link_order)
+static bfd_boolean
+default_data_link_order (abfd, info, sec, link_order)
bfd *abfd;
- struct bfd_link_info *info;
+ struct bfd_link_info *info ATTRIBUTE_UNUSED;
asection *sec;
struct bfd_link_order *link_order;
{
- size_t size;
- char *space;
- size_t i;
- int fill;
- boolean result;
+ bfd_size_type size;
+ size_t fill_size;
+ bfd_byte *fill;
+ file_ptr loc;
+ bfd_boolean result;
BFD_ASSERT ((sec->flags & SEC_HAS_CONTENTS) != 0);
- size = (size_t) link_order->size;
- space = (char *) malloc (size);
- if (space == NULL && size != 0)
+ size = link_order->size;
+ if (size == 0)
+ return TRUE;
+
+ fill = link_order->u.data.contents;
+ fill_size = link_order->u.data.size;
+ if (fill_size != 0 && fill_size < size)
{
- bfd_set_error (bfd_error_no_memory);
- return false;
+ bfd_byte *p;
+ fill = (bfd_byte *) bfd_malloc (size);
+ if (fill == NULL)
+ return FALSE;
+ p = fill;
+ if (fill_size == 1)
+ memset (p, (int) link_order->u.data.contents[0], (size_t) size);
+ else
+ {
+ do
+ {
+ memcpy (p, link_order->u.data.contents, fill_size);
+ p += fill_size;
+ size -= fill_size;
+ }
+ while (size >= fill_size);
+ if (size != 0)
+ memcpy (p, link_order->u.data.contents, (size_t) size);
+ size = link_order->size;
+ }
}
- fill = link_order->u.fill.value;
- for (i = 0; i < size; i += 2)
- space[i] = fill >> 8;
- for (i = 1; i < size; i += 2)
- space[i] = fill;
- result = bfd_set_section_contents (abfd, sec, space,
- (file_ptr) link_order->offset,
- link_order->size);
- free (space);
+ loc = link_order->offset * bfd_octets_per_byte (abfd);
+ result = bfd_set_section_contents (abfd, sec, fill, loc, size);
+
+ if (fill != link_order->u.data.contents)
+ free (fill);
return result;
}
/* Default routine to handle a bfd_indirect_link_order. */
-static boolean
+static bfd_boolean
default_indirect_link_order (output_bfd, info, output_section, link_order,
generic_linker)
bfd *output_bfd;
struct bfd_link_info *info;
asection *output_section;
struct bfd_link_order *link_order;
- boolean generic_linker;
+ bfd_boolean generic_linker;
{
asection *input_section;
bfd *input_bfd;
bfd_byte *contents = NULL;
bfd_byte *new_contents;
+ bfd_size_type sec_size;
+ file_ptr loc;
BFD_ASSERT ((output_section->flags & SEC_HAS_CONTENTS) != 0);
if (link_order->size == 0)
- return true;
+ return TRUE;
input_section = link_order->u.indirect.section;
input_bfd = input_section->owner;
because somebody is attempting to link together different
types of object files. Handling this case correctly is
difficult, and sometimes impossible. */
- abort ();
+ (*_bfd_error_handler)
+ (_("Attempt to do relocateable link with %s input and %s output"),
+ bfd_get_target (input_bfd), bfd_get_target (output_bfd));
+ bfd_set_error (bfd_error_wrong_format);
+ return FALSE;
}
if (! generic_linker)
a specific linker, presumably because we are linking
different types of object files together. */
if (! generic_link_read_symbols (input_bfd))
- return false;
+ return FALSE;
/* Since we have been called by a specific linker, rather than
the generic linker, the values of the symbols will not be
generic_link_add_symbol_list. */
if (sym->udata.p != NULL)
h = (struct bfd_link_hash_entry *) sym->udata.p;
+ else if (bfd_is_und_section (bfd_get_section (sym)))
+ h = bfd_wrapped_link_hash_lookup (output_bfd, info,
+ bfd_asymbol_name (sym),
+ FALSE, FALSE, TRUE);
else
h = bfd_link_hash_lookup (info->hash,
bfd_asymbol_name (sym),
- false, false, true);
+ FALSE, FALSE, TRUE);
if (h != NULL)
set_symbol_from_hash (sym, h);
}
- }
+ }
}
/* Get and relocate the section contents. */
- contents = (bfd_byte *) malloc (bfd_section_size (input_bfd, input_section));
- if (contents == NULL && bfd_section_size (input_bfd, input_section) != 0)
- {
- bfd_set_error (bfd_error_no_memory);
- goto error_return;
- }
+ sec_size = bfd_section_size (input_bfd, input_section);
+ contents = ((bfd_byte *) bfd_malloc (sec_size));
+ if (contents == NULL && sec_size != 0)
+ goto error_return;
new_contents = (bfd_get_relocated_section_contents
(output_bfd, info, link_order, contents, info->relocateable,
_bfd_generic_link_get_symbols (input_bfd)));
goto error_return;
/* Output the section contents. */
+ loc = link_order->offset * bfd_octets_per_byte (output_bfd);
if (! bfd_set_section_contents (output_bfd, output_section,
- (PTR) new_contents,
- link_order->offset, link_order->size))
+ (PTR) new_contents, loc, link_order->size))
goto error_return;
if (contents != NULL)
free (contents);
- return true;
+ return TRUE;
error_return:
if (contents != NULL)
free (contents);
- return false;
+ return FALSE;
}
/* A little routine to count the number of relocs in a link_order
bfd_link_split_section
SYNOPSIS
- boolean bfd_link_split_section(bfd *abfd, asection *sec);
+ bfd_boolean bfd_link_split_section(bfd *abfd, asection *sec);
DESCRIPTION
Return nonzero if @var{sec} should be split during a
*/
-
-
-boolean
+bfd_boolean
_bfd_generic_link_split_section (abfd, sec)
- bfd *abfd;
- asection *sec;
+ bfd *abfd ATTRIBUTE_UNUSED;
+ asection *sec ATTRIBUTE_UNUSED;
{
- return false;
+ return FALSE;
}
projects / deliverable / binutils-gdb.git / blobdiff