/* Main program of GNU linker.
- Copyright (C) 1991, 1993, 1994 Free Software Foundation, Inc.
+ Copyright (C) 1991, 92, 93, 94 Free Software Foundation, Inc.
Written by Steve Chamberlain steve@cygnus.com
This file is part of GLD, the Gnu Linker.
You should have received a copy of the GNU General Public License
along with GLD; see the file COPYING. If not, write to
-the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA. */
+the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
#include "bfd.h"
#include "sysdep.h"
#include <stdio.h>
+#include "libiberty.h"
+#include "progress.h"
#include "bfdlink.h"
#include "config.h"
#include <string.h>
+/* Use sbrk() except on specific OS types */
+#if !defined(__amigados__) && !defined(WINDOWS_NT)
+#define HAVE_SBRK
+#endif
+
static char *get_emulation PARAMS ((int, char **));
static void set_scripts_dir PARAMS ((void));
instead of complaining if no input files are given. */
boolean version_printed;
-/* 1 => write load map. */
-boolean write_map;
+/* Nonzero means link in every member of an archive. */
+boolean whole_archive;
args_type command_line;
bfd_vma));
static boolean add_to_set PARAMS ((struct bfd_link_info *,
struct bfd_link_hash_entry *,
- unsigned int bitsize,
+ bfd_reloc_code_real_type,
bfd *, asection *, bfd_vma));
static boolean constructor_callback PARAMS ((struct bfd_link_info *,
boolean constructor,
- unsigned int bitsize,
const char *name,
bfd *, asection *, bfd_vma));
static boolean warning_callback PARAMS ((struct bfd_link_info *,
struct bfd_link_info link_info;
\f
-extern int main PARAMS ((int, char **));
+static void
+remove_output ()
+{
+ if (output_filename)
+ {
+ if (output_bfd && output_bfd->iostream)
+ fclose((FILE *)(output_bfd->iostream));
+ if (delete_output_file_on_failure)
+ unlink (output_filename);
+ }
+}
int
main (argc, argv)
long start_time = get_run_time ();
program_name = argv[0];
+ xmalloc_set_program_name (program_name);
+
+ START_PROGRESS (program_name, 0);
bfd_init ();
+ xatexit (remove_output);
+
/* Initialize the data about options. */
trace_files = trace_file_tries = version_printed = false;
- write_map = false;
+ whole_archive = false;
+ config.traditional_format = false;
config.build_constructors = true;
+ config.dynamic_link = false;
command_line.force_common_definition = false;
+ command_line.interpreter = NULL;
+ command_line.rpath = NULL;
link_info.callbacks = &link_callbacks;
link_info.relocateable = false;
+ link_info.shared = false;
link_info.strip = strip_none;
link_info.discard = discard_none;
link_info.lprefix_len = 1;
link_info.hash = NULL;
link_info.keep_hash = NULL;
link_info.notice_hash = NULL;
+ link_info.subsystem = console;
+ link_info.stack_heap_parameters.stack_defined = false;
+ link_info.stack_heap_parameters.heap_defined = false;
+ link_info.stack_heap_parameters.stack_reserve = 0;
+ link_info.stack_heap_parameters.stack_commit = 0;
+ link_info.stack_heap_parameters.heap_reserve = 0;
+ link_info.stack_heap_parameters.heap_commit = 0;
+
ldfile_add_arch ("");
lang_has_input_file = false;
parse_args (argc, argv);
+ if (link_info.relocateable)
+ {
+ if (command_line.relax)
+ einfo ("%P%F: -relax and -r may not be used together\n");
+ if (config.dynamic_link)
+ einfo ("%P%F: -r and -call_shared may not be used together\n");
+ if (link_info.shared)
+ einfo ("%P%F: -r and -shared may not be used together\n");
+ }
+
+ /* Treat ld -r -s as ld -r -S -x (i.e., strip all local symbols). I
+ don't see how else this can be handled, since in this case we
+ must preserve all externally visible symbols. */
+ if (link_info.relocateable && link_info.strip == strip_all)
+ {
+ link_info.strip = strip_debugger;
+ if (link_info.discard == discard_none)
+ link_info.discard = discard_all;
+ }
+
/* This essentially adds another -L directory so this must be done after
the -L's in argv have been processed. */
set_scripts_dir ();
char *s = ldemul_get_script (&isfile);
if (isfile)
+ ldfile_open_command_file (s);
+ else
{
- /* sizeof counts the terminating NUL. */
- size_t size = strlen (s) + sizeof ("-T ");
- char *buf = (char *) ldmalloc(size);
- sprintf (buf, "-T %s", s);
- parse_line (buf, 0);
- free (buf);
+ if (trace_file_tries)
+ {
+ info_msg ("using internal linker script:\n");
+ info_msg ("==================================================\n");
+ info_msg (s);
+ info_msg ("\n==================================================\n");
+ }
+ lex_redirect (s);
}
- else
- parse_line (s, 1);
+ parser_input = input_script;
+ yyparse ();
}
- if (link_info.relocateable && command_line.relax)
- {
- einfo ("%P%F: -relax and -r may not be used together\n");
- }
lang_final ();
if (lang_has_input_file == false)
{
if (version_printed)
- exit (0);
+ xexit (0);
einfo ("%P%F: no input files\n");
}
config.map_file = fopen (config.map_filename, FOPEN_WT);
if (config.map_file == (FILE *) NULL)
{
+ bfd_set_error (bfd_error_system_call);
einfo ("%P%F: cannot open map file %s: %E\n",
config.map_filename);
}
fclose ((FILE *) (output_bfd->iostream));
unlink (output_filename);
- exit (1);
+ xexit (1);
}
else
{
- bfd_close (output_bfd);
+ if (! bfd_close (output_bfd))
+ einfo ("%F%B: final close failed: %E\n", output_bfd);
}
+ END_PROGRESS (program_name);
+
if (config.stats)
{
extern char **environ;
+#ifdef HAVE_SBRK
char *lim = (char *) sbrk (0);
+#endif
long run_time = get_run_time () - start_time;
- fprintf (stderr, "%s: total time in link: %d.%06d\n",
+ fprintf (stderr, "%s: total time in link: %ld.%06ld\n",
program_name, run_time / 1000000, run_time % 1000000);
+#ifdef HAVE_SBRK
fprintf (stderr, "%s: data size %ld\n", program_name,
(long) (lim - (char *) &environ));
+#endif
}
- exit (0);
+ /* Prevent remove_output from doing anything, after a successful link. */
+ output_filename = NULL;
+
+ xexit (0);
return 0;
}
the arguments and hope that nobody ever creates
emulations named ips1, ips2 or ips3. */
}
+ else if (strcmp (argv[i], "-m486") == 0)
+ {
+ /* FIXME: The argument -m486 is passed to the linker on
+ some Linux systems. Hope that nobody creates an
+ emulation named 486. */
+ }
else
{
/* -mEMUL */
dirlen = strlen (dir);
/* sizeof counts the terminating NUL. */
- buf = (char *) ldmalloc (dirlen + sizeof("/ldscripts"));
+ buf = (char *) xmalloc (dirlen + sizeof("/ldscripts"));
sprintf (buf, "%s/ldscripts", dir);
res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode);
free (buf);
if (res)
- ldfile_add_library_path (dir);
+ ldfile_add_library_path (dir, false);
return res;
}
dirlen = end - program_name;
/* Make a copy of program_name in dir.
Leave room for later "/../lib". */
- dir = (char *) ldmalloc (dirlen + 8);
+ dir = (char *) xmalloc (dirlen + 8);
strncpy (dir, program_name, dirlen);
dir[dirlen] = '\0';
}
else
{
dirlen = 1;
- dir = (char *) ldmalloc (dirlen + 8);
+ dir = (char *) xmalloc (dirlen + 8);
strcpy (dir, ".");
}
if (link_info.notice_hash == (struct bfd_hash_table *) NULL)
{
link_info.notice_hash = ((struct bfd_hash_table *)
- ldmalloc (sizeof (struct bfd_hash_table)));
+ xmalloc (sizeof (struct bfd_hash_table)));
if (! bfd_hash_table_init_n (link_info.notice_hash,
bfd_hash_newfunc,
61))
file = fopen (filename, "r");
if (file == (FILE *) NULL)
{
- bfd_error = system_call_error;
+ bfd_set_error (bfd_error_system_call);
einfo ("%X%P: %s: %E", filename);
return;
}
link_info.keep_hash = ((struct bfd_hash_table *)
- ldmalloc (sizeof (struct bfd_hash_table)));
+ xmalloc (sizeof (struct bfd_hash_table)));
if (! bfd_hash_table_init (link_info.keep_hash, bfd_hash_newfunc))
einfo ("%P%F: bfd_hash_table_init failed: %E\n");
bufsize = 100;
- buf = (char *) ldmalloc (bufsize);
+ buf = (char *) xmalloc (bufsize);
c = getc (file);
while (c != EOF)
if (len >= bufsize)
{
bufsize *= 2;
- buf = ldrealloc (buf, bufsize);
+ buf = xrealloc (buf, bufsize);
}
c = getc (file);
}
lang_input_statement_type *input;
input = ((lang_input_statement_type *)
- ldmalloc ((bfd_size_type) sizeof (lang_input_statement_type)));
+ xmalloc ((bfd_size_type) sizeof (lang_input_statement_type)));
input->filename = abfd->filename;
input->local_sym_name = abfd->filename;
input->the_bfd = abfd;
input->asymbols = NULL;
- input->subfiles = NULL;
input->next = NULL;
input->just_syms_flag = false;
input->loaded = false;
- input->chain = NULL;
-
- /* FIXME: This is wrong. It should point to an entry for the
- archive itself. However, it doesn't seem to matter. */
- input->superfile = NULL;
+ input->search_dirs_flag = false;
/* FIXME: The following fields are not set: header.next,
- header.type, closed, passive_position, symbol_count, total_size,
- next_real_file, is_archive, search_dirs_flag, target, real,
- common_section, common_output_section, complained. This bit of
- code is from the old decode_library_subfile function. I don't
- know whether any of those fields matters. */
+ header.type, closed, passive_position, symbol_count,
+ next_real_file, is_archive, target, real, common_section,
+ common_output_section, complained. This bit of code is from the
+ old decode_library_subfile function. I don't know whether any of
+ those fields matters. */
ldlang_add_file (input);
- if (write_map)
- info_msg ("%s needed due to %T\n", abfd->filename, name);
+ if (config.map_file != (FILE *) NULL)
+ minfo ("%s needed due to %T\n", abfd->filename, name);
if (trace_files || trace_file_tries)
info_msg ("%I\n", input);
einfo ("%X%C: multiple definition of `%T'\n",
nbfd, nsec, nval, name);
if (obfd != (bfd *) NULL)
- einfo ("%C: first defined here\n", obfd, osec, oval);
+ einfo ("%D: first defined here\n", obfd, osec, oval);
return true;
}
if (! config.warn_common)
return true;
- if (ntype == bfd_link_hash_defined)
+ if (ntype == bfd_link_hash_defined
+ || ntype == bfd_link_hash_defweak
+ || ntype == bfd_link_hash_indirect)
{
ASSERT (otype == bfd_link_hash_common);
einfo ("%B: warning: definition of `%T' overriding common\n",
nbfd, name);
- einfo ("%B: warning: common is here\n", obfd);
+ if (obfd != NULL)
+ einfo ("%B: warning: common is here\n", obfd);
}
- else if (otype == bfd_link_hash_defined)
+ else if (otype == bfd_link_hash_defined
+ || otype == bfd_link_hash_defweak
+ || otype == bfd_link_hash_indirect)
{
ASSERT (ntype == bfd_link_hash_common);
einfo ("%B: warning: common of `%T' overridden by definition\n",
nbfd, name);
- einfo ("%B: warning: defined here\n", obfd);
+ if (obfd != NULL)
+ einfo ("%B: warning: defined here\n", obfd);
}
else
{
{
einfo ("%B: warning: common of `%T' overridden by larger common\n",
nbfd, name);
- einfo ("%B: warning: larger common is here\n", obfd);
+ if (obfd != NULL)
+ einfo ("%B: warning: larger common is here\n", obfd);
}
else if (nsize > osize)
{
einfo ("%B: warning: common of `%T' overriding smaller common\n",
nbfd, name);
- einfo ("%B: warning: smaller common is here\n", obfd);
+ if (obfd != NULL)
+ einfo ("%B: warning: smaller common is here\n", obfd);
}
else
{
einfo ("%B: warning: multiple common of `%T'\n", nbfd, name);
- einfo ("%B: warning: previous common is here\n", obfd);
+ if (obfd != NULL)
+ einfo ("%B: warning: previous common is here\n", obfd);
}
}
/*ARGSUSED*/
static boolean
-add_to_set (info, h, bitsize, abfd, section, value)
+add_to_set (info, h, reloc, abfd, section, value)
struct bfd_link_info *info;
struct bfd_link_hash_entry *h;
- unsigned int bitsize;
+ bfd_reloc_code_real_type reloc;
bfd *abfd;
asection *section;
bfd_vma value;
{
- ldctor_add_set_entry (h, bitsize, section, value);
+ if (! config.build_constructors)
+ return true;
+
+ ldctor_add_set_entry (h, reloc, section, value);
+
+ if (h->type == bfd_link_hash_new)
+ {
+ h->type = bfd_link_hash_undefined;
+ h->u.undef.abfd = abfd;
+ /* We don't call bfd_link_add_undef to add this to the list of
+ undefined symbols because we are going to define it
+ ourselves. */
+ }
+
return true;
}
adding an element to a set, but less general. */
static boolean
-constructor_callback (info, constructor, bitsize, name, abfd, section, value)
+constructor_callback (info, constructor, name, abfd, section, value)
struct bfd_link_info *info;
boolean constructor;
- unsigned int bitsize;
const char *name;
bfd *abfd;
asection *section;
if (! config.build_constructors)
return true;
+ /* Ensure that BFD_RELOC_CTOR exists now, so that we can give a
+ useful error message. */
+ if (bfd_reloc_type_lookup (output_bfd, BFD_RELOC_CTOR) == NULL)
+ einfo ("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported");
+
set_name = (char *) alloca (1 + sizeof "__CTOR_LIST__");
s = set_name;
if (bfd_get_symbol_leading_char (abfd) != '\0')
else
strcpy (s, "__DTOR_LIST__");
- if (write_map)
- info_msg ("Adding %s to constructor/destructor set %s\n", name, set_name);
+ if (config.map_file != (FILE *) NULL)
+ fprintf (config.map_file,
+ "Adding %s to constructor/destructor set %s\n", name, set_name);
h = bfd_link_hash_lookup (info->hash, set_name, true, true, true);
if (h == (struct bfd_link_hash_entry *) NULL)
ourselves. */
}
- ldctor_add_set_entry (h, bitsize, section, value);
+ ldctor_add_set_entry (h, BFD_RELOC_CTOR, section, value);
return true;
}
#define MAX_ERRORS_IN_A_ROW 5
+ if (config.warn_once)
+ {
+ static struct bfd_hash_table *hash;
+
+ /* Only warn once about a particular undefined symbol. */
+
+ if (hash == NULL)
+ {
+ hash = ((struct bfd_hash_table *)
+ xmalloc (sizeof (struct bfd_hash_table)));
+ if (! bfd_hash_table_init (hash, bfd_hash_newfunc))
+ einfo ("%F%P: bfd_hash_table_init failed: %E\n");
+ }
+
+ if (bfd_hash_lookup (hash, name, false, false) != NULL)
+ return true;
+
+ if (bfd_hash_lookup (hash, name, true, true) == NULL)
+ einfo ("%F%P: bfd_hash_lookup failed: %E\n");
+ }
+
/* We never print more than a reasonable number of errors in a row
for a single symbol. */
if (error_name != (char *) NULL
error_name = buystring (name);
}
- if (error_count < MAX_ERRORS_IN_A_ROW)
- einfo ("%X%C: undefined reference to `%T'\n",
- abfd, section, address, name);
- else if (error_count == MAX_ERRORS_IN_A_ROW)
- einfo ("%C: more undefined references to `%T' follow\n",
- abfd, section, address, name);
+ if (section != NULL)
+ {
+ if (error_count < MAX_ERRORS_IN_A_ROW)
+ einfo ("%X%C: undefined reference to `%T'\n",
+ abfd, section, address, name);
+ else if (error_count == MAX_ERRORS_IN_A_ROW)
+ einfo ("%D: more undefined references to `%T' follow\n",
+ abfd, section, address, name);
+ }
+ else
+ {
+ if (error_count < MAX_ERRORS_IN_A_ROW)
+ einfo ("%X%B: undefined reference to `%T'\n",
+ abfd, name);
+ else if (error_count == MAX_ERRORS_IN_A_ROW)
+ einfo ("%B: more undefined references to `%T' follow\n",
+ abfd, name);
+ }
return true;
}
asection *section;
bfd_vma address;
{
- einfo ("%X%C: relocation truncated to fit: %s %T", abfd, section,
- address, reloc_name, name);
+ if (abfd == (bfd *) NULL)
+ einfo ("%P%X: generated");
+ else
+ einfo ("%X%C:", abfd, section, address);
+ einfo (" relocation truncated to fit: %s %T", reloc_name, name);
if (addend != 0)
einfo ("+%v", addend);
einfo ("\n");
asection *section;
bfd_vma address;
{
- einfo ("%X%C: dangerous relocation: %s\n", abfd, section, address, message);
+ if (abfd == (bfd *) NULL)
+ einfo ("%P%X: generated");
+ else
+ einfo ("%X%C:", abfd, section, address);
+ einfo ("dangerous relocation: %s\n", message);
return true;
}
asection *section;
bfd_vma address;
{
- einfo ("%X%C: reloc refers to symbol `%T' which is not being output\n",
- abfd, section, address, name);
+ if (abfd == (bfd *) NULL)
+ einfo ("%P%X: generated");
+ else
+ einfo ("%X%C:", abfd, section, address);
+ einfo (" reloc refers to symbol `%T' which is not being output\n", name);
return true;
}
bfd_vma value;
{
einfo ("%B: %s %s\n", abfd,
- section != &bfd_und_section ? "definition of" : "reference to",
+ bfd_is_und_section (section) ? "reference to" : "definition of",
name);
return true;
}
projects / deliverable / binutils-gdb.git / blobdiff