/* Linker file opening and searching.
- Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2002,
- 2003, 2004, 2005, 2007, 2008, 2009, 2010 Free Software Foundation, Inc.
+ Copyright (C) 1991-2017 Free Software Foundation, Inc.
This file is part of the GNU Binutils.
#include "ldemul.h"
#include "libiberty.h"
#include "filenames.h"
+#ifdef ENABLE_PLUGINS
+#include "plugin-api.h"
+#include "plugin.h"
+#endif /* ENABLE_PLUGINS */
-const char * ldfile_input_filename;
-bfd_boolean ldfile_assumed_script = FALSE;
-const char * ldfile_output_machine_name = "";
+bfd_boolean ldfile_assumed_script = FALSE;
+const char *ldfile_output_machine_name = "";
unsigned long ldfile_output_machine;
enum bfd_architecture ldfile_output_architecture;
-search_dirs_type * search_head;
+search_dirs_type *search_head;
#ifdef VMS
-static char * slash = "";
+static char *slash = "";
#else
-#if defined (_WIN32) && ! defined (__CYGWIN32__)
-static char * slash = "\\";
+#if defined (_WIN32) && !defined (__CYGWIN32__)
+static char *slash = "\\";
#else
-static char * slash = "/";
+static char *slash = "/";
#endif
#endif
sub-directory of the sysroot directory. */
static bfd_boolean
-is_sysrooted_pathname (const char *name, bfd_boolean notsame)
+is_sysrooted_pathname (const char *name)
{
- char * realname = ld_canon_sysroot ? lrealpath (name) : NULL;
+ char *realname;
int len;
bfd_boolean result;
- if (! realname)
+ if (ld_canon_sysroot == NULL)
return FALSE;
+ realname = lrealpath (name);
len = strlen (realname);
+ result = FALSE;
+ if (len > ld_canon_sysroot_len
+ && IS_DIR_SEPARATOR (realname[ld_canon_sysroot_len]))
+ {
+ realname[ld_canon_sysroot_len] = '\0';
+ result = FILENAME_CMP (ld_canon_sysroot, realname) == 0;
+ }
- if (((! notsame && len == ld_canon_sysroot_len)
- || (len >= ld_canon_sysroot_len
- && IS_DIR_SEPARATOR (realname[ld_canon_sysroot_len])
- && (realname[ld_canon_sysroot_len] = '\0') == '\0'))
- && FILENAME_CMP (ld_canon_sysroot, realname) == 0)
- result = TRUE;
- else
- result = FALSE;
-
- if (realname)
- free (realname);
-
+ free (realname);
return result;
}
/* If a directory is marked as honoring sysroot, prepend the sysroot path
now. */
if (name[0] == '=')
- {
- new_dirs->name = concat (ld_sysroot, name + 1, (const char *) NULL);
- new_dirs->sysrooted = TRUE;
- }
+ new_dirs->name = concat (ld_sysroot, name + 1, (const char *) NULL);
+ else if (CONST_STRNEQ (name, "$SYSROOT"))
+ new_dirs->name = concat (ld_sysroot, name + strlen ("$SYSROOT"), (const char *) NULL);
else
- {
- new_dirs->name = xstrdup (name);
- new_dirs->sysrooted = is_sysrooted_pathname (name, FALSE);
- }
+ new_dirs->name = xstrdup (name);
}
/* Try to open a BFD for a lang_input_statement. */
{
entry->the_bfd = bfd_openr (attempt, entry->target);
- if (trace_file_tries)
+ if (verbose)
{
if (entry->the_bfd == NULL)
info_msg (_("attempt to open %s failed\n"), attempt);
return FALSE;
}
+ /* Linker needs to decompress sections. */
+ entry->the_bfd->flags |= BFD_DECOMPRESS;
+
+ /* This is a linker input BFD. */
+ entry->the_bfd->is_linker_input = 1;
+
+#ifdef ENABLE_PLUGINS
+ if (entry->flags.lto_output)
+ entry->the_bfd->lto_output = 1;
+#endif
+
/* If we are searching for this file, see if the architecture is
compatible with the output file. If it isn't, keep searching.
If we can't open the file as an object file, stop the search
here. If we are statically linking, ensure that we don't link
- a dynamic object. */
+ a dynamic object.
- if (entry->search_dirs_flag || !entry->dynamic)
+ In the code below, it's OK to exit early if the check fails,
+ closing the checked BFD and returning FALSE, but if the BFD
+ checks out compatible, do not exit early returning TRUE, or
+ the plugins will not get a chance to claim the file. */
+
+ if (entry->flags.search_dirs || !entry->flags.dynamic)
{
bfd *check;
if (check != NULL)
{
- if (! bfd_check_format (check, bfd_object))
+ if (!bfd_check_format (check, bfd_object))
{
if (check == entry->the_bfd
- && entry->search_dirs_flag
+ && entry->flags.search_dirs
&& bfd_get_error () == bfd_error_file_not_recognized
- && ! ldemul_unrecognized_file (entry))
+ && !ldemul_unrecognized_file (entry))
{
int token, skip = 0;
char *arg, *arg1, *arg2, *arg3;
return FALSE;
}
}
- return TRUE;
+ goto success;
}
- if (!entry->dynamic && (entry->the_bfd->flags & DYNAMIC) != 0)
+ if (!entry->flags.dynamic && (entry->the_bfd->flags & DYNAMIC) != 0)
{
einfo (_("%F%P: attempted static link of dynamic object `%s'\n"),
attempt);
return FALSE;
}
- if (entry->search_dirs_flag
+ if (entry->flags.search_dirs
&& !bfd_arch_get_compatible (check, link_info.output_bfd,
command_line.accept_unknown_input_arch)
/* XCOFF archives can have 32 and 64 bit objects. */
- && ! (bfd_get_flavour (check) == bfd_target_xcoff_flavour
- && bfd_get_flavour (link_info.output_bfd) == bfd_target_xcoff_flavour
- && bfd_check_format (entry->the_bfd, bfd_archive)))
+ && !(bfd_get_flavour (check) == bfd_target_xcoff_flavour
+ && (bfd_get_flavour (link_info.output_bfd)
+ == bfd_target_xcoff_flavour)
+ && bfd_check_format (entry->the_bfd, bfd_archive)))
{
if (command_line.warn_search_mismatch)
einfo (_("%P: skipping incompatible %s "
}
}
}
-
+success:
+#ifdef ENABLE_PLUGINS
+ /* If plugins are active, they get first chance to claim
+ any successfully-opened input file. We skip archives
+ here; the plugin wants us to offer it the individual
+ members when we enumerate them, not the whole file. We
+ also ignore corefiles, because that's just weird. It is
+ a needed side-effect of calling bfd_check_format with
+ bfd_object that it sets the bfd's arch and mach, which
+ will be needed when and if we want to bfd_create a new
+ one using this one as a template. */
+ if (link_info.lto_plugin_active
+ && !no_more_claiming
+ && bfd_check_format (entry->the_bfd, bfd_object))
+ plugin_maybe_claim (entry);
+#endif /* ENABLE_PLUGINS */
+
+ /* It opened OK, the format checked out, and the plugins have had
+ their chance to claim it, so this is success. */
return TRUE;
}
/* If this is not an archive, try to open it in the current
directory first. */
- if (! entry->is_archive)
+ if (!entry->flags.maybe_archive)
{
- if (entry->sysrooted && IS_ABSOLUTE_PATH (entry->filename))
+ if (entry->flags.sysrooted && IS_ABSOLUTE_PATH (entry->filename))
{
char *name = concat (ld_sysroot, entry->filename,
(const char *) NULL);
free (name);
}
else if (ldfile_try_open_bfd (entry->filename, entry))
- {
- entry->sysrooted = IS_ABSOLUTE_PATH (entry->filename)
- && is_sysrooted_pathname (entry->filename, TRUE);
- return TRUE;
- }
+ return TRUE;
if (IS_ABSOLUTE_PATH (entry->filename))
return FALSE;
{
char *string;
- if (entry->dynamic && ! link_info.relocatable)
+ if (entry->flags.dynamic && !bfd_link_relocatable (&link_info))
{
if (ldemul_open_dynamic_archive (arch, search, entry))
- {
- entry->sysrooted = search->sysrooted;
- return TRUE;
- }
+ return TRUE;
}
- if (entry->is_archive)
+ if (entry->flags.maybe_archive && !entry->flags.full_name_provided)
string = concat (search->name, slash, lib, entry->filename,
arch, suffix, (const char *) NULL);
else
if (ldfile_try_open_bfd (string, entry))
{
entry->filename = string;
- entry->sysrooted = search->sysrooted;
return TRUE;
}
if (entry->the_bfd != NULL)
return;
- if (! entry->search_dirs_flag)
+ if (!entry->flags.search_dirs)
{
if (ldfile_try_open_bfd (entry->filename, entry))
return;
- if (strcmp (entry->filename, entry->local_sym_name) != 0)
+ if (filename_cmp (entry->filename, entry->local_sym_name) != 0)
einfo (_("%P: cannot find %s (%s): %E\n"),
entry->filename, entry->local_sym_name);
else
einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name);
- entry->missing_file = TRUE;
- missing_file = TRUE;
+ entry->flags.missing_file = TRUE;
+ input_flags.missing_file = TRUE;
}
else
{
/* If we have found the file, we don't need to search directories
again. */
if (found)
- entry->search_dirs_flag = FALSE;
+ entry->flags.search_dirs = FALSE;
else
{
- if (entry->sysrooted
+ if (entry->flags.sysrooted
&& ld_sysroot
&& IS_ABSOLUTE_PATH (entry->local_sym_name))
einfo (_("%P: cannot find %s inside %s\n"),
entry->local_sym_name, ld_sysroot);
else
einfo (_("%P: cannot find %s\n"), entry->local_sym_name);
- entry->missing_file = TRUE;
- missing_file = TRUE;
+ entry->flags.missing_file = TRUE;
+ input_flags.missing_file = TRUE;
}
}
}
-/* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */
+/* Try to open NAME. */
static FILE *
-try_open (const char *name, const char *exten)
+try_open (const char *name, bfd_boolean *sysrooted)
{
FILE *result;
result = fopen (name, "r");
- if (trace_file_tries)
+ if (result != NULL)
+ *sysrooted = is_sysrooted_pathname (name);
+
+ if (verbose)
{
if (result == NULL)
info_msg (_("cannot find script file %s\n"), name);
info_msg (_("opened script file %s\n"), name);
}
- if (result != NULL)
- return result;
-
- if (*exten)
- {
- char *buff;
-
- buff = concat (name, exten, (const char *) NULL);
- result = fopen (buff, "r");
-
- if (trace_file_tries)
- {
- if (result == NULL)
- info_msg (_("cannot find script file %s\n"), buff);
- else
- info_msg (_("opened script file %s\n"), buff);
- }
- free (buff);
- }
-
return result;
}
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). */
static char *
free (dir);
}
- if (check_for_scripts_dir (SCRIPTDIR))
- /* We've been installed normally. */
- return SCRIPTDIR;
-
/* Look for "ldscripts" in the dir where our binary is. */
dir = make_relative_prefix (program_name, ".", ".");
if (dir)
/* If DEFAULT_ONLY is false, try to open NAME; if that fails, look for
it in directories specified with -L, then in the default script
- directory, without and with EXTEND appended. If DEFAULT_ONLY is
- true, the search is restricted to the default script location. */
+ directory. If DEFAULT_ONLY is true, the search is restricted to
+ the default script location. */
static FILE *
-ldfile_find_command_file (const char *name, const char *extend,
- bfd_boolean default_only)
+ldfile_find_command_file (const char *name,
+ bfd_boolean default_only,
+ bfd_boolean *sysrooted)
{
search_dirs_type *search;
FILE *result = NULL;
- char *buffer;
+ char *path;
static search_dirs_type *script_search;
if (!default_only)
{
/* First try raw name. */
- result = try_open (name, "");
+ result = try_open (name, sysrooted);
if (result != NULL)
return result;
}
search != NULL;
search = search->next)
{
- buffer = concat (search->name, slash, name, (const char *) NULL);
- result = try_open (buffer, extend);
- free (buffer);
+ path = concat (search->name, slash, name, (const char *) NULL);
+ result = try_open (path, sysrooted);
+ free (path);
if (result)
break;
}
ldfile_open_command_file_1 (const char *name, bfd_boolean default_only)
{
FILE *ldlex_input_stack;
- ldlex_input_stack = ldfile_find_command_file (name, "", default_only);
+ bfd_boolean sysrooted;
+
+ ldlex_input_stack = ldfile_find_command_file (name, default_only, &sysrooted);
if (ldlex_input_stack == NULL)
{
bfd_set_error (bfd_error_system_call);
einfo (_("%P%F: cannot open linker script file %s: %E\n"), name);
+ return;
}
- lex_push_file (ldlex_input_stack, name);
+ lex_push_file (ldlex_input_stack, name, sysrooted);
- ldfile_input_filename = name;
lineno = 1;
saved_script_handle = ldlex_input_stack;
ldfile_add_arch (const char *in_name)
{
char *name = xstrdup (in_name);
- search_arch_type *new_arch = (search_arch_type *)
- xmalloc (sizeof (search_arch_type));
+ search_arch_type *new_arch
+ = (search_arch_type *) xmalloc (sizeof (search_arch_type));
ldfile_output_machine_name = in_name;
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