/* Main program of GNU linker.
- Copyright (C) 1991, 92, 93, 94 Free Software Foundation, Inc.
+ Copyright (C) 1991, 92, 93, 94, 1995 Free Software Foundation, Inc.
Written by Steve Chamberlain steve@cygnus.com
This file is part of GLD, the Gnu Linker.
#include "bfd.h"
#include "sysdep.h"
#include <stdio.h>
+#include <ctype.h>
#include "libiberty.h"
#include "progress.h"
#include "bfdlink.h"
-#include "config.h"
#include "ld.h"
#include "ldmain.h"
#include "ldmisc.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));
const char *name,
bfd *, asection *, bfd_vma));
static boolean warning_callback PARAMS ((struct bfd_link_info *,
- const char *));
+ const char *, const char *, bfd *,
+ asection *, bfd_vma));
+static void warning_find_reloc PARAMS ((bfd *, asection *, PTR));
static boolean undefined_symbol PARAMS ((struct bfd_link_info *,
const char *, bfd *,
asection *, bfd_vma));
link_info.relocateable = false;
link_info.shared = false;
link_info.symbolic = false;
+ link_info.static_link = 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 ("");
config.make_executable = true;
lang_has_input_file = false;
parse_args (argc, argv);
+ ldemul_set_symbols ();
+
if (link_info.relocateable)
{
if (command_line.relax)
info_msg (s);
info_msg ("\n==================================================\n");
}
+ lex_string = s;
lex_redirect (s);
}
parser_input = input_script;
yyparse ();
+ lex_string = NULL;
}
lang_final ();
/* Look for "ldscripts" in the dir where our binary is. */
end = strrchr (program_name, '/');
- if (end)
- {
- dirlen = end - program_name;
- /* Make a copy of program_name in dir.
- Leave room for later "/../lib". */
- dir = (char *) xmalloc (dirlen + 8);
- strncpy (dir, program_name, dirlen);
- dir[dirlen] = '\0';
- }
- else
+
+ if (end == NULL)
{
- dirlen = 1;
- dir = (char *) xmalloc (dirlen + 8);
- strcpy (dir, ".");
+ /* Don't look for ldscripts in the current directory. There is
+ too much potential for confusion. */
+ return;
}
+ dirlen = end - program_name;
+ /* Make a copy of program_name in dir.
+ Leave room for later "/../lib". */
+ dir = (char *) xmalloc (dirlen + 8);
+ strncpy (dir, program_name, dirlen);
+ dir[dirlen] = '\0';
+
if (check_for_scripts_dir (dir))
return; /* Don't free dir. */
if (file == (FILE *) NULL)
{
bfd_set_error (bfd_error_system_call);
- einfo ("%X%P: %s: %E", filename);
+ einfo ("%X%P: %s: %E\n", filename);
return;
}
if (bfd_hash_lookup (link_info.keep_hash, buf, true, true)
== (struct bfd_hash_entry *) NULL)
- einfo ("%P%F: bfd_hash_lookup for insertion failed: %E");
+ einfo ("%P%F: bfd_hash_lookup for insertion failed: %E\n");
}
}
lang_input_statement_type *input;
input = ((lang_input_statement_type *)
- xmalloc ((bfd_size_type) sizeof (lang_input_statement_type)));
+ xmalloc (sizeof (lang_input_statement_type)));
input->filename = abfd->filename;
input->local_sym_name = abfd->filename;
input->the_bfd = abfd;
asection *section;
bfd_vma value;
{
+ if (config.warn_constructors)
+ einfo ("%P: warning: global constructor %s used\n",
+ h->root.string);
+
if (! config.build_constructors)
return true;
asection *section;
bfd_vma value;
{
- char *set_name;
char *s;
struct bfd_link_hash_entry *h;
+ char set_name[1 + sizeof "__CTOR_LIST__"];
+
+ if (config.warn_constructors)
+ einfo ("%P: warning: global constructor %s used\n", name);
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");
+ einfo ("%P%F: BFD backend error: BFD_RELOC_CTOR unsupported\n");
- set_name = (char *) alloca (1 + sizeof "__CTOR_LIST__");
s = set_name;
if (bfd_get_symbol_leading_char (abfd) != '\0')
*s++ = bfd_get_symbol_leading_char (abfd);
h = bfd_link_hash_lookup (info->hash, set_name, true, true, true);
if (h == (struct bfd_link_hash_entry *) NULL)
- einfo ("%P%F: bfd_link_hash_lookup failed: %E");
+ einfo ("%P%F: bfd_link_hash_lookup failed: %E\n");
if (h->type == bfd_link_hash_new)
{
h->type = bfd_link_hash_undefined;
return true;
}
+/* A structure used by warning_callback to pass information through
+ bfd_map_over_sections. */
+
+struct warning_callback_info
+{
+ boolean found;
+ const char *warning;
+ const char *symbol;
+ asymbol **asymbols;
+};
+
/* This is called when there is a reference to a warning symbol. */
/*ARGSUSED*/
static boolean
-warning_callback (info, warning)
+warning_callback (info, warning, symbol, abfd, section, address)
struct bfd_link_info *info;
const char *warning;
+ const char *symbol;
+ bfd *abfd;
+ asection *section;
+ bfd_vma address;
{
- einfo ("%P: %s\n", warning);
+ if (section != NULL)
+ einfo ("%C: %s\n", abfd, section, address, warning);
+ else if (abfd == NULL)
+ einfo ("%P: %s\n", warning);
+ else if (symbol == NULL)
+ einfo ("%B: %s\n", abfd, warning);
+ else
+ {
+ lang_input_statement_type *entry;
+ asymbol **asymbols;
+ struct warning_callback_info info;
+
+ /* Look through the relocs to see if we can find a plausible
+ address. */
+
+ entry = (lang_input_statement_type *) abfd->usrdata;
+ if (entry != NULL && entry->asymbols != NULL)
+ asymbols = entry->asymbols;
+ else
+ {
+ long symsize;
+ long symbol_count;
+
+ symsize = bfd_get_symtab_upper_bound (abfd);
+ if (symsize < 0)
+ einfo ("%B%F: could not read symbols: %E\n", abfd);
+ asymbols = (asymbol **) xmalloc (symsize);
+ symbol_count = bfd_canonicalize_symtab (abfd, asymbols);
+ if (symbol_count < 0)
+ einfo ("%B%F: could not read symbols: %E\n", abfd);
+ if (entry != NULL)
+ {
+ entry->asymbols = asymbols;
+ entry->symbol_count = symbol_count;
+ }
+ }
+
+ info.found = false;
+ info.warning = warning;
+ info.symbol = symbol;
+ info.asymbols = asymbols;
+ bfd_map_over_sections (abfd, warning_find_reloc, (PTR) &info);
+
+ if (! info.found)
+ einfo ("%B: %s\n", abfd, warning);
+ }
+
return true;
}
+/* This is called by warning_callback for each section. It checks the
+ relocs of the section to see if it can find a reference to the
+ symbol which triggered the warning. If it can, it uses the reloc
+ to give an error message with a file and line number. */
+
+static void
+warning_find_reloc (abfd, sec, iarg)
+ bfd *abfd;
+ asection *sec;
+ PTR iarg;
+{
+ struct warning_callback_info *info = (struct warning_callback_info *) iarg;
+ long relsize;
+ arelent **relpp;
+ long relcount;
+ arelent **p, **pend;
+
+ if (info->found)
+ return;
+
+ relsize = bfd_get_reloc_upper_bound (abfd, sec);
+ if (relsize < 0)
+ einfo ("%B%F: could not read relocs: %E\n", abfd);
+ if (relsize == 0)
+ return;
+
+ relpp = (arelent **) xmalloc (relsize);
+ relcount = bfd_canonicalize_reloc (abfd, sec, relpp, info->asymbols);
+ if (relcount < 0)
+ einfo ("%B%F: could not read relocs: %E\n", abfd);
+
+ p = relpp;
+ pend = p + relcount;
+ for (; p < pend && *p != NULL; p++)
+ {
+ arelent *q = *p;
+
+ if (q->sym_ptr_ptr != NULL
+ && *q->sym_ptr_ptr != NULL
+ && strcmp (bfd_asymbol_name (*q->sym_ptr_ptr), info->symbol) == 0)
+ {
+ /* We found a reloc for the symbol we are looking for. */
+ einfo ("%C: %s\n", abfd, sec, q->address, info->warning);
+ info->found = true;
+ break;
+ }
+ }
+
+ free (relpp);
+}
+
/* This is called when an undefined symbol is found. */
/*ARGSUSED*/
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 <varargs.h>
#include <demangle.h>
+/* this collection of routines wants to use the Unix style varargs
+ use special abbreviated portion of varargs.h */
+#ifdef WINDOWS_NT
+/* Since macro __STDC__ is defined, the compiler will raise and error if
+ VARARGS.H from mstools\h is included. Since we only need a portion of
+ this header file, it has been incorporated into local header file
+ xvarargs.h */
+#include "xvarargs.h"
+#else
+#include <varargs.h>
+#endif
#include "ld.h"
#include "ldmisc.h"
#include "ldmain.h"
#include "ldfile.h"
+
/* VARARGS*/
static void finfo ();
static const char *demangle PARAMS ((const char *string,
%R info about a relent
%s arbitrary string, like printf
%d integer, like printf
+ %u integer, like printf
*/
static const char *
case 'S':
/* print script file and linenumber */
- {
- if (ldfile_input_filename) {
- fprintf(fp,"%s:%u", ldfile_input_filename, lineno );
- }
- }
+ if (parsing_defsym)
+ fprintf (fp, "--defsym %s", lex_string);
+ else if (ldfile_input_filename != NULL)
+ fprintf (fp, "%s:%u", ldfile_input_filename, lineno);
+ else
+ fprintf (fp, "built in linker script:%u", lineno);
break;
case 'R':
or section name as a last resort. The arguments are a BFD,
a section, and an offset. */
{
+ static bfd *last_bfd;
static char *last_file = NULL;
static char *last_function = NULL;
bfd *abfd;
symsize = bfd_get_symtab_upper_bound (abfd);
if (symsize < 0)
- einfo ("%B%F: could not read symbols", abfd);
+ einfo ("%B%F: could not read symbols\n", abfd);
asymbols = (asymbol **) xmalloc (symsize);
symbol_count = bfd_canonicalize_symtab (abfd, asymbols);
if (symbol_count < 0)
- einfo ("%B%F: could not read symbols", abfd);
+ einfo ("%B%F: could not read symbols\n", abfd);
if (entry != (lang_input_statement_type *) NULL)
{
entry->asymbols = asymbols;
if (bfd_find_nearest_line (abfd, section, asymbols, offset,
&filename, &functionname, &linenumber))
{
- if (filename == (char *) NULL)
- filename = abfd->filename;
-
if (functionname != NULL && fmt[-1] == 'C')
{
- if (last_file == NULL
+ if (filename == (char *) NULL)
+ filename = abfd->filename;
+
+ if (last_bfd == NULL
+ || last_file == NULL
|| last_function == NULL
+ || last_bfd != abfd
|| strcmp (last_file, filename) != 0
|| strcmp (last_function, functionname) != 0)
{
- fprintf (fp, "%s: In function `%s':\n", filename,
- demangle (functionname, 1));
+ /* We use abfd->filename in this initial line,
+ in case filename is a .h file or something
+ similarly unhelpful. */
+ finfo (fp, "%B: In function `%s':\n",
+ abfd, demangle (functionname, 1));
+
+ last_bfd = abfd;
if (last_file != NULL)
free (last_file);
last_file = buystring (filename);
last_function = buystring (functionname);
}
discard_last = false;
- fprintf (fp, "%s:%u", filename, linenumber);
+ if (linenumber != 0)
+ fprintf (fp, "%s:%u", filename, linenumber);
+ else
+ finfo (fp, "%s(%s+0x%v)", filename, section->name, offset);
+ }
+ else if (filename == NULL
+ || strcmp (filename, abfd->filename) == 0)
+ {
+ finfo (fp, "%B(%s+0x%v)", abfd, section->name, offset);
+ if (linenumber != 0)
+ finfo (fp, "%u", linenumber);
}
else if (linenumber != 0)
- fprintf (fp, "%s:%u", filename, linenumber);
+ finfo (fp, "%B:%s:%u", abfd, filename, linenumber);
else
- finfo (fp, "%s(%s+0x%v)", filename, section->name, offset);
+ finfo (fp, "%B(%s+0x%v):%s", abfd, section->name, offset,
+ filename);
}
else
- finfo (fp, "%s(%s+0x%v)", abfd->filename, section->name, offset);
+ finfo (fp, "%B(%s+0x%v)", abfd, section->name, offset);
if (discard_last)
{
+ last_bfd = NULL;
if (last_file != NULL)
{
free (last_file);
/* integer, like printf */
fprintf(fp,"%d", va_arg(arg, int));
break;
+
+ case 'u':
+ /* unsigned integer, like printf */
+ fprintf(fp,"%u", va_arg(arg, unsigned int));
+ break;
}
}
}
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