/* Main program of GNU linker.
Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001,
- 2002
+ 2002, 2003
Free Software Foundation, Inc.
Written by Steve Chamberlain steve@cygnus.com
#include "ldemul.h"
#include "ldctor.h"
-/* Somewhere above, sys/stat.h got included . . . . */
+/* Somewhere above, sys/stat.h got included. */
#if !defined(S_ISDIR) && defined(S_IFDIR)
#define S_ISDIR(m) (((m) & S_IFMT) == S_IFDIR)
#endif
#endif
#endif
-int main PARAMS ((int, char **));
+#ifndef TARGET_SYSTEM_ROOT
+#define TARGET_SYSTEM_ROOT ""
+#endif
-static char *get_emulation PARAMS ((int, char **));
-static void set_scripts_dir PARAMS ((void));
+int main PARAMS ((int, char **));
/* EXPORTS */
/* Name this program was invoked by. */
char *program_name;
+/* The prefix for system library directories. */
+char *ld_sysroot;
+
+/* The canonical representation of ld_sysroot. */
+char * ld_canon_sysroot;
+int ld_canon_sysroot_len;
+
/* The file that we're creating. */
bfd *output_bfd = 0;
ld_config_type config;
-static void remove_output PARAMS ((void));
-static bfd_boolean check_for_scripts_dir PARAMS ((char *dir));
-static bfd_boolean add_archive_element PARAMS ((struct bfd_link_info *, bfd *,
- const char *));
-static bfd_boolean multiple_definition PARAMS ((struct bfd_link_info *,
- const char *,
- bfd *, asection *, bfd_vma,
- bfd *, asection *, bfd_vma));
-static bfd_boolean multiple_common PARAMS ((struct bfd_link_info *,
- const char *, bfd *,
- enum bfd_link_hash_type, bfd_vma,
- bfd *, enum bfd_link_hash_type,
- bfd_vma));
-static bfd_boolean add_to_set PARAMS ((struct bfd_link_info *,
- struct bfd_link_hash_entry *,
- bfd_reloc_code_real_type,
- bfd *, asection *, bfd_vma));
-static bfd_boolean constructor_callback PARAMS ((struct bfd_link_info *,
- bfd_boolean constructor,
- const char *name,
- bfd *, asection *, bfd_vma));
-static bfd_boolean warning_callback PARAMS ((struct bfd_link_info *,
- const char *, const char *, bfd *,
- asection *, bfd_vma));
-static void warning_find_reloc PARAMS ((bfd *, asection *, PTR));
-static bfd_boolean undefined_symbol PARAMS ((struct bfd_link_info *,
- const char *, bfd *,
- asection *, bfd_vma, bfd_boolean));
-static bfd_boolean reloc_overflow PARAMS ((struct bfd_link_info *, const char *,
- const char *, bfd_vma,
- bfd *, asection *, bfd_vma));
-static bfd_boolean reloc_dangerous PARAMS ((struct bfd_link_info *, const char *,
- bfd *, asection *, bfd_vma));
-static bfd_boolean unattached_reloc PARAMS ((struct bfd_link_info *,
- const char *, bfd *, asection *,
- bfd_vma));
-static bfd_boolean notice PARAMS ((struct bfd_link_info *, const char *,
- bfd *, asection *, bfd_vma));
-
-static struct bfd_link_callbacks link_callbacks = {
+static char *get_emulation
+ PARAMS ((int, char **));
+static void set_scripts_dir
+ PARAMS ((void));
+static void remove_output
+ PARAMS ((void));
+static bfd_boolean check_for_scripts_dir
+ PARAMS ((char *));
+static bfd_boolean add_archive_element
+ PARAMS ((struct bfd_link_info *, bfd *, const char *));
+static bfd_boolean multiple_definition
+ PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma,
+ bfd *, asection *, bfd_vma));
+static bfd_boolean multiple_common
+ PARAMS ((struct bfd_link_info *, const char *, bfd *,
+ enum bfd_link_hash_type, bfd_vma, bfd *, enum bfd_link_hash_type,
+ bfd_vma));
+static bfd_boolean add_to_set
+ PARAMS ((struct bfd_link_info *, struct bfd_link_hash_entry *,
+ bfd_reloc_code_real_type, bfd *, asection *, bfd_vma));
+static bfd_boolean constructor_callback
+ PARAMS ((struct bfd_link_info *, bfd_boolean, const char *, bfd *,
+ asection *, bfd_vma));
+static bfd_boolean warning_callback
+ PARAMS ((struct bfd_link_info *, const char *, const char *, bfd *,
+ asection *, bfd_vma));
+static void warning_find_reloc
+ PARAMS ((bfd *, asection *, PTR));
+static bfd_boolean undefined_symbol
+ PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma,
+ bfd_boolean));
+static bfd_boolean reloc_overflow
+ PARAMS ((struct bfd_link_info *, const char *, const char *, bfd_vma,
+ bfd *, asection *, bfd_vma));
+static bfd_boolean reloc_dangerous
+ PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma));
+static bfd_boolean unattached_reloc
+ PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma));
+static bfd_boolean notice
+ PARAMS ((struct bfd_link_info *, const char *, bfd *, asection *, bfd_vma));
+
+static struct bfd_link_callbacks link_callbacks =
+{
add_archive_element,
multiple_definition,
multiple_common,
reloc_overflow,
reloc_dangerous,
unattached_reloc,
- notice
+ notice,
+ error_handler
};
struct bfd_link_info link_info;
xatexit (remove_output);
+#ifdef TARGET_SYSTEM_ROOT_RELOCATABLE
+ ld_sysroot = make_relative_prefix (program_name, BINDIR,
+ TARGET_SYSTEM_ROOT);
+
+ if (ld_sysroot)
+ {
+ struct stat s;
+ int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode);
+
+ if (!res)
+ {
+ free (ld_sysroot);
+ ld_sysroot = NULL;
+ }
+ }
+
+ if (! ld_sysroot)
+ {
+ ld_sysroot = make_relative_prefix (program_name, TOOLBINDIR,
+ TARGET_SYSTEM_ROOT);
+
+ if (ld_sysroot)
+ {
+ struct stat s;
+ int res = stat (ld_sysroot, &s) == 0 && S_ISDIR (s.st_mode);
+
+ if (!res)
+ {
+ free (ld_sysroot);
+ ld_sysroot = NULL;
+ }
+ }
+ }
+
+ if (! ld_sysroot)
+#endif
+ ld_sysroot = TARGET_SYSTEM_ROOT;
+
+ if (ld_sysroot && *ld_sysroot)
+ ld_canon_sysroot = lrealpath (ld_sysroot);
+
+ if (ld_canon_sysroot)
+ ld_canon_sysroot_len = strlen (ld_canon_sysroot);
+ else
+ ld_canon_sysroot_len = -1;
+
/* Set the default BFD target based on the configured target. Doing
this permits the linker to be configured for a particular target,
and linked against a shared BFD library which was configured for
link_info.emitrelocations = FALSE;
link_info.task_link = FALSE;
link_info.shared = FALSE;
+ link_info.pie = FALSE;
+ link_info.executable = FALSE;
link_info.symbolic = FALSE;
link_info.export_dynamic = FALSE;
link_info.static_link = FALSE;
link_info.traditional_format = FALSE;
link_info.optimize = FALSE;
link_info.no_undefined = FALSE;
- link_info.allow_shlib_undefined = FALSE;
+ link_info.allow_shlib_undefined = TRUE;
link_info.allow_multiple_definition = FALSE;
link_info.allow_undefined_version = TRUE;
link_info.keep_memory = TRUE;
link_info.new_dtags = FALSE;
link_info.combreloc = TRUE;
link_info.eh_frame_hdr = FALSE;
+ link_info.strip_discarded = TRUE;
link_info.strip = strip_none;
link_info.discard = discard_sec_merge;
link_info.common_skip_ar_aymbols = bfd_link_common_skip_none;
link_info.spare_dynamic_tags = 5;
link_info.flags = (bfd_vma) 0;
link_info.flags_1 = (bfd_vma) 0;
+ link_info.relax_finalizing = FALSE;
ldfile_add_arch ("");
einfo (_("%P%F: -f may not be used without -shared\n"));
}
+ if (! link_info.shared || link_info.pie)
+ link_info.executable = TRUE;
+
/* 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 (trace_files)
- {
- info_msg (_("%P: mode %s\n"), emulation);
- }
+ info_msg (_("%P: mode %s\n"), emulation);
ldemul_after_parse ();
/* Print error messages for any missing symbols, for any warning
symbols, and possibly multiple definitions. */
-
if (link_info.relocateable)
output_bfd->flags &= ~EXEC_P;
else
/* Even if we're producing relocateable output, some non-fatal errors should
be reported in the exit status. (What non-fatal errors, if any, do we
want to ignore for relocateable output?) */
-
if (!config.make_executable && !force_make_executable)
{
if (trace_files)
- {
- einfo (_("%P: link errors found, deleting executable `%s'\n"),
- output_filename);
- }
+ einfo (_("%P: link errors found, deleting executable `%s'\n"),
+ output_filename);
/* The file will be removed by remove_output. */
-
xexit (1);
}
else
if (! link_info.relocateable && command_line.force_exe_suffix)
{
int len = strlen (output_filename);
+
if (len < 4
|| (strcasecmp (output_filename + len - 4, ".exe") != 0
&& strcasecmp (output_filename + len - 4, ".dll") != 0))
char *buf = xmalloc (bsize);
int l;
char *dst_name = xmalloc (len + 5);
+
strcpy (dst_name, output_filename);
strcat (dst_name, ".exe");
src = fopen (output_filename, FOPEN_RB);
while ((l = fread (buf, 1, bsize, src)) > 0)
{
int done = fwrite (buf, 1, l, dst);
+
if (done != l)
- {
- einfo (_("%P: Error writing file `%s'\n"), dst_name);
- }
+ einfo (_("%P: Error writing file `%s'\n"), dst_name);
}
+
fclose (src);
if (fclose (dst) == EOF)
- {
- einfo (_("%P: Error closing file `%s'\n"), dst_name);
- }
+ einfo (_("%P: Error closing file `%s'\n"), dst_name);
free (dst_name);
free (buf);
}
i++;
}
else
- {
- einfo (_("%P%F: missing argument to -m\n"));
- }
+ einfo (_("%P%F: missing argument to -m\n"));
}
else if (strcmp (argv[i], "-mips1") == 0
|| strcmp (argv[i], "-mips2") == 0
|| strcmp (argv[i], "-mips3") == 0
- || strcmp (argv[i], "-mips32") == 0
- || strcmp (argv[i], "-mips64") == 0
|| strcmp (argv[i], "-mips4") == 0
- || strcmp (argv[i], "-mips5") == 0)
+ || strcmp (argv[i], "-mips5") == 0
+ || strcmp (argv[i], "-mips32") == 0
+ || strcmp (argv[i], "-mips32r2") == 0
+ || strcmp (argv[i], "-mips64") == 0)
{
/* FIXME: The arguments -mips1, -mips2, -mips3, etc. are
passed to the linker by some MIPS compilers. They
Libraries will be searched for here too, but that's ok.
We look for the "ldscripts" directory in:
+ SCRIPTDIR (passed from Makefile)
+ (adjusted according to the current location of the binary)
SCRIPTDIR (passed from Makefile)
the dir where this program is (for using it from the build tree)
- the dir where this program is/../lib (for installing the tool suite elsewhere) */
+ the dir where this program is/../lib
+ (for installing the tool suite elsewhere). */
static void
set_scripts_dir ()
{
char *end, *dir;
size_t dirlen;
+ bfd_boolean found;
+
+ dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR);
+ if (dir)
+ {
+ found = check_for_scripts_dir (dir);
+ free (dir);
+ if (found)
+ return;
+ }
+
+ dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR);
+ if (dir)
+ {
+ found = check_for_scripts_dir (dir);
+ free (dir);
+ if (found)
+ return;
+ }
if (check_for_scripts_dir (SCRIPTDIR))
/* We've been installed normally. */
{
/* We could have \foo\bar, or /foo\bar. */
char *bslash = strrchr (program_name, '\\');
+
if (end == NULL || (bslash != NULL && bslash > end))
end = bslash;
}
#endif
if (end == NULL)
- {
- /* Don't look for ldscripts in the current directory. There is
- too much potential for confusion. */
- return;
- }
+ /* 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.
dir[dirlen] = '\0';
if (check_for_scripts_dir (dir))
- /* Don't free dir. */
- return;
+ {
+ free (dir);
+ return;
+ }
/* Look for "ldscripts" in <the dir where our binary is>/../lib. */
strcpy (dir + dirlen, "/../lib");
- if (check_for_scripts_dir (dir))
- return;
-
- /* Well, we tried. */
+ check_for_scripts_dir (dir);
free (dir);
}
61))
einfo (_("%P%F: bfd_hash_table_init failed: %E\n"));
}
+
if (bfd_hash_lookup (link_info.wrap_hash, name, TRUE, TRUE) == NULL)
einfo (_("%P%F: bfd_hash_lookup failed: %E\n"));
}
if (link_info.strip != strip_none)
einfo (_("%P: `-retain-symbols-file' overrides `-s' and `-S'\n"));
+ free (buf);
link_info.strip = strip_some;
}
\f
/* A structure used by warning_callback to pass information through
bfd_map_over_sections. */
-struct warning_callback_info {
+struct warning_callback_info
+{
bfd_boolean found;
const char *warning;
const char *symbol;
/* 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;
static struct bfd_hash_table *hash;
/* Only warn once about a particular undefined symbol. */
-
if (hash == NULL)
{
hash = ((struct bfd_hash_table *)
return TRUE;
}
+/* Counter to limit the number of relocation overflow error messages
+ to print. Errors are printed as it is decremented. When it's
+ called and the counter is zero, a final message is printed
+ indicating more relocations were omitted. When it gets to -1, no
+ such errors are printed. If it's initially set to a value less
+ than -1, all such errors will be printed (--verbose does this). */
+
+int overflow_cutoff_limit = 10;
+
/* This is called when a reloc overflows. */
static bfd_boolean
asection *section;
bfd_vma address;
{
+ if (overflow_cutoff_limit == -1)
+ return TRUE;
+
if (abfd == (bfd *) NULL)
einfo (_("%P%X: generated"));
else
einfo ("%X%C:", abfd, section, address);
+
+ if (overflow_cutoff_limit >= 0
+ && overflow_cutoff_limit-- == 0)
+ {
+ einfo (_(" additional relocation overflows omitted from the output\n"));
+ return TRUE;
+ }
+
einfo (_(" relocation truncated to fit: %s %T"), reloc_name, name);
if (addend != 0)
einfo ("+%v", addend);
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