/* Linker file opening and searching.
- Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001
- Free Software Foundation, Inc.
+ Copyright (C) 1991-2023 Free Software Foundation, Inc.
-This file is part of GLD, the Gnu Linker.
+ This file is part of the GNU Binutils.
-GLD is free software; you can redistribute it and/or modify
-it under the terms of the GNU General Public License as published by
-the Free Software Foundation; either version 2, or (at your option)
-any later version.
+ This program is free software; you can redistribute it and/or modify
+ it under the terms of the GNU General Public License as published by
+ the Free Software Foundation; either version 3 of the License, or
+ (at your option) any later version.
-GLD is distributed in the hope that it will be useful,
-but WITHOUT ANY WARRANTY; without even the implied warranty of
-MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-GNU General Public License for more details.
+ This program is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ GNU General Public License for more details.
-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, 59 Temple Place - Suite 330, Boston, MA
-02111-1307, USA. */
+ 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., 51 Franklin Street - Fifth Floor, Boston,
+ MA 02110-1301, USA. */
-/* ldfile.c: look after all the file stuff. */
-
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
#include "bfdlink.h"
+#include "ctf-api.h"
+#include "safe-ctype.h"
#include "ld.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
#include "ldmain.h"
-#include "ldgram.h"
+#include <ldgram.h>
#include "ldlex.h"
#include "ldemul.h"
-
-#include <ctype.h>
-
-const char *ldfile_input_filename;
-boolean ldfile_assumed_script = false;
+#include "libiberty.h"
+#include "filenames.h"
+#include <fnmatch.h>
+#if BFD_SUPPORTS_PLUGINS
+#include "plugin-api.h"
+#include "plugin.h"
+#endif /* BFD_SUPPORTS_PLUGINS */
+
+bool 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;
-#ifndef MPW
#ifdef VMS
-char *slash = "";
+static char *slash = "";
#else
-#if defined (_WIN32) && ! defined (__CYGWIN32__)
-char *slash = "\\";
+#if defined (_WIN32) && !defined (__CYGWIN32__)
+static char *slash = "\\";
#else
-char *slash = "/";
+static char *slash = "/";
#endif
#endif
-#else /* MPW */
-/* The MPW path char is a colon. */
-char *slash = ":";
-#endif /* MPW */
-
-/* LOCAL */
-
-static search_dirs_type **search_tail_ptr = &search_head;
-typedef struct search_arch {
+typedef struct search_arch
+{
char *name;
struct search_arch *next;
} search_arch_type;
+static search_dirs_type **search_tail_ptr = &search_head;
static search_arch_type *search_arch_head;
static search_arch_type **search_arch_tail_ptr = &search_arch_head;
-static FILE *try_open PARAMS ((const char *name, const char *exten));
+typedef struct input_remap
+{
+ const char * pattern; /* Pattern to match input files. */
+ const char * renamed; /* Filename to use if the pattern matches. */
+ struct input_remap * next; /* Link in a chain of these structures. */
+} input_remap;
+
+static struct input_remap * input_remaps = NULL;
void
-ldfile_add_library_path (name, cmdline)
- const char *name;
- boolean cmdline;
+ldfile_add_remap (const char * pattern, const char * renamed)
{
- search_dirs_type *new;
-
- new = (search_dirs_type *) xmalloc (sizeof (search_dirs_type));
- new->next = NULL;
- new->name = name;
- new->cmdline = cmdline;
- *search_tail_ptr = new;
- search_tail_ptr = &new->next;
+ struct input_remap * new_entry;
+
+ new_entry = xmalloc (sizeof * new_entry);
+ new_entry->pattern = xstrdup (pattern);
+ new_entry->next = NULL;
+
+ /* Look for special filenames that mean that the input file should be ignored. */
+ if (strcmp (renamed, "/dev/null") == 0
+ || strcmp (renamed, "NUL") == 0)
+ new_entry->renamed = NULL;
+ else
+ /* FIXME: Should we add sanity checking of the 'renamed' string ? */
+ new_entry->renamed = xstrdup (renamed);
+
+ /* It would be easier to add this new node at the start of the chain,
+ but users expect that remapping will occur in the order in which
+ they occur on the command line, and in the remapping files. */
+ if (input_remaps == NULL)
+ {
+ input_remaps = new_entry;
+ }
+ else
+ {
+ struct input_remap * i;
+
+ for (i = input_remaps; i->next != NULL; i = i->next)
+ ;
+ i->next = new_entry;
+ }
+}
+
+void
+ldfile_remap_input_free (void)
+{
+ while (input_remaps != NULL)
+ {
+ struct input_remap * i = input_remaps;
+
+ input_remaps = i->next;
+ free ((void *) i->pattern);
+ free ((void *) i->renamed);
+ free (i);
+ }
+}
+
+bool
+ldfile_add_remap_file (const char * file)
+{
+ FILE * f;
+
+ f = fopen (file, FOPEN_RT);
+ if (f == NULL)
+ return false;
+
+ size_t linelen = 256;
+ char * line = xmalloc (linelen);
+
+ do
+ {
+ char * p = line;
+ char * q;
+
+ /* Normally this would use getline(3), but we need to be portable. */
+ while ((q = fgets (p, linelen - (p - line), f)) != NULL
+ && strlen (q) == linelen - (p - line) - 1
+ && line[linelen - 2] != '\n')
+ {
+ line = xrealloc (line, 2 * linelen);
+ p = line + linelen - 1;
+ linelen += linelen;
+ }
+
+ if (q == NULL && p == line)
+ break;
+
+ p = strchr (line, '\n');
+ if (p)
+ *p = '\0';
+
+ /* Because the file format does not know any form of quoting we
+ can search forward for the next '#' character and if found
+ make it terminating the line. */
+ p = strchr (line, '#');
+ if (p)
+ *p = '\0';
+
+ /* Remove leading whitespace. NUL is no whitespace character. */
+ p = line;
+ while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
+ ++p;
+
+ /* If the line is blank it is ignored. */
+ if (*p == '\0')
+ continue;
+
+ char * pattern = p;
+
+ /* Advance past the pattern. We accept whitespace or '=' as an
+ end-of-pattern marker. */
+ while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
+ && *p != '\r' && *p != '\v')
+ ++p;
+
+ if (*p == '\0')
+ {
+ einfo ("%F%P: malformed remap file entry: %s\n", line);
+ continue;
+ }
+
+ * p++ = '\0';
+
+ /* Skip whitespace again. */
+ while (*p == ' ' || *p == '\f' || *p == '\r' || *p == '\t' || *p == '\v')
+ ++p;
+
+ if (*p == '\0')
+ {
+ einfo ("%F%P: malformed remap file entry: %s\n", line);
+ continue;
+ }
+
+ char * rename = p;
+
+ /* Advance past the rename entry. */
+ while (*p && *p != '=' && *p != ' ' && *p != '\t' && *p != '\f'
+ && *p != '\r' && *p != '\v')
+ ++p;
+ /* And terminate it. */
+ *p = '\0';
+
+ ldfile_add_remap (pattern, rename);
+ }
+ while (! feof (f));
+
+ free (line);
+ fclose (f);
+
+ return true;
+}
+
+const char *
+ldfile_possibly_remap_input (const char * filename)
+{
+ struct input_remap * i;
+
+ if (filename == NULL)
+ return NULL;
+
+ for (i = input_remaps; i != NULL; i = i->next)
+ {
+ if (fnmatch (i->pattern, filename, 0) == 0)
+ {
+ if (verbose)
+ {
+ if (strpbrk ((i->pattern), "?*[") != NULL)
+ {
+ if (i->renamed)
+ info_msg (_("remap input file '%s' to '%s' based upon pattern '%s'\n"),
+ filename, i->renamed, i->pattern);
+ else
+ info_msg (_("remove input file '%s' based upon pattern '%s'\n"),
+ filename, i->pattern);
+ }
+ else
+ {
+ if (i->renamed)
+ info_msg (_("remap input file '%s' to '%s'\n"),
+ filename, i->renamed);
+ else
+ info_msg (_("remove input file '%s'\n"),
+ filename);
+ }
+ }
+
+ return i->renamed;
+ }
+ }
+
+ return filename;
+}
+
+void
+ldfile_print_input_remaps (void)
+{
+ if (input_remaps == NULL)
+ return;
+
+ minfo (_("\nInput File Remapping\n\n"));
+
+ struct input_remap * i;
+
+ for (i = input_remaps; i != NULL; i = i->next)
+ minfo (_(" Pattern: %s\tMaps To: %s\n"), i->pattern,
+ i->renamed ? i->renamed : _("<discard>"));
+}
+
+
+/* Test whether a pathname, after canonicalization, is the same or a
+ sub-directory of the sysroot directory. */
+
+static bool
+is_sysrooted_pathname (const char *name)
+{
+ char *realname;
+ int len;
+ bool result;
+
+ 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;
+ }
+
+ free (realname);
+ return result;
+}
+
+/* Adds NAME to the library search path.
+ Makes a copy of NAME using xmalloc(). */
+
+void
+ldfile_add_library_path (const char *name, bool cmdline)
+{
+ search_dirs_type *new_dirs;
+
+ if (!cmdline && config.only_cmd_line_lib_dirs)
+ return;
+
+ new_dirs = (search_dirs_type *) xmalloc (sizeof (search_dirs_type));
+ new_dirs->next = NULL;
+ new_dirs->cmdline = cmdline;
+ *search_tail_ptr = new_dirs;
+ search_tail_ptr = &new_dirs->next;
+
+ /* 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);
+ else if (startswith (name, "$SYSROOT"))
+ new_dirs->name = concat (ld_sysroot, name + strlen ("$SYSROOT"), (const char *) NULL);
+ else
+ new_dirs->name = xstrdup (name);
}
/* Try to open a BFD for a lang_input_statement. */
-boolean
-ldfile_try_open_bfd (attempt, entry)
- const char *attempt;
- lang_input_statement_type *entry;
+bool
+ldfile_try_open_bfd (const char *attempt,
+ lang_input_statement_type *entry)
{
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;
}
+ track_dependency_files (attempt);
+
+ /* Linker needs to decompress sections. */
+ entry->the_bfd->flags |= BFD_DECOMPRESS;
+
+ /* This is a linker input BFD. */
+ entry->the_bfd->is_linker_input = 1;
+
+#if BFD_SUPPORTS_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. */
+ here. If we are statically linking, ensure that we don't link
+ a dynamic object.
+
+ 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->search_dirs_flag)
+ if (entry->flags.search_dirs || !entry->flags.dynamic)
{
bfd *check;
if (check != NULL)
{
- if (! bfd_check_format (check, bfd_object))
- return true;
- if (bfd_arch_get_compatible (check, output_bfd) == NULL)
+ if (!bfd_check_format (check, bfd_object))
{
- einfo (_("%P: skipping incompatible %s when searching for %s\n"),
- attempt, entry->local_sym_name);
+ if (check == entry->the_bfd
+ && entry->flags.search_dirs
+ && bfd_get_error () == bfd_error_file_not_recognized
+ && !ldemul_unrecognized_file (entry))
+ {
+ int token, skip = 0;
+ char *arg, *arg1, *arg2, *arg3;
+ extern FILE *yyin;
+
+ /* Try to interpret the file as a linker script. */
+ ldfile_open_command_file (attempt);
+
+ ldfile_assumed_script = true;
+ parser_input = input_selected;
+ ldlex_script ();
+ token = INPUT_SCRIPT;
+ while (token != 0)
+ {
+ switch (token)
+ {
+ case OUTPUT_FORMAT:
+ if ((token = yylex ()) != '(')
+ continue;
+ if ((token = yylex ()) != NAME)
+ continue;
+ arg1 = yylval.name;
+ arg2 = NULL;
+ arg3 = NULL;
+ token = yylex ();
+ if (token == ',')
+ {
+ if ((token = yylex ()) != NAME)
+ {
+ free (arg1);
+ continue;
+ }
+ arg2 = yylval.name;
+ if ((token = yylex ()) != ','
+ || (token = yylex ()) != NAME)
+ {
+ free (arg1);
+ free (arg2);
+ continue;
+ }
+ arg3 = yylval.name;
+ token = yylex ();
+ }
+ if (token == ')')
+ {
+ switch (command_line.endian)
+ {
+ default:
+ case ENDIAN_UNSET:
+ arg = arg1; break;
+ case ENDIAN_BIG:
+ arg = arg2 ? arg2 : arg1; break;
+ case ENDIAN_LITTLE:
+ arg = arg3 ? arg3 : arg1; break;
+ }
+ if (strcmp (arg, lang_get_output_target ()) != 0)
+ skip = 1;
+ }
+ free (arg1);
+ free (arg2);
+ free (arg3);
+ break;
+ case NAME:
+ case LNAME:
+ case VERS_IDENTIFIER:
+ case VERS_TAG:
+ free (yylval.name);
+ break;
+ case INT:
+ free (yylval.bigint.str);
+ break;
+ }
+ token = yylex ();
+ }
+ ldlex_popstate ();
+ ldfile_assumed_script = false;
+ fclose (yyin);
+ yyin = NULL;
+ if (skip)
+ {
+ if (command_line.warn_search_mismatch)
+ einfo (_("%P: skipping incompatible %s "
+ "when searching for %s\n"),
+ attempt, entry->local_sym_name);
+ bfd_close (entry->the_bfd);
+ entry->the_bfd = NULL;
+ return false;
+ }
+ }
+ goto success;
+ }
+
+ if (!entry->flags.dynamic && (entry->the_bfd->flags & DYNAMIC) != 0)
+ {
+ einfo (_("%F%P: attempted static link of dynamic object `%s'\n"),
+ attempt);
+ bfd_close (entry->the_bfd);
+ entry->the_bfd = NULL;
+ return false;
+ }
+
+ 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)))
+ {
+ if (command_line.warn_search_mismatch)
+ einfo (_("%P: skipping incompatible %s "
+ "when searching for %s\n"),
+ attempt, entry->local_sym_name);
bfd_close (entry->the_bfd);
entry->the_bfd = NULL;
return false;
}
}
}
-
+ success:
+#if BFD_SUPPORTS_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 /* BFD_SUPPORTS_PLUGINS */
+
+ /* It opened OK, the format checked out, and the plugins have had
+ their chance to claim it, so this is success. */
return true;
}
/* Search for and open the file specified by ENTRY. If it is an
archive, use ARCH, LIB and SUFFIX to modify the file name. */
-boolean
-ldfile_open_file_search (arch, entry, lib, suffix)
- const char *arch;
- lang_input_statement_type *entry;
- const char *lib;
- const char *suffix;
+bool
+ldfile_open_file_search (const char *arch,
+ lang_input_statement_type *entry,
+ const char *lib,
+ const char *suffix)
{
search_dirs_type *search;
/* 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 (ldfile_try_open_bfd (entry->filename, entry))
+ if (entry->flags.sysrooted && IS_ABSOLUTE_PATH (entry->filename))
+ {
+ char *name = concat (ld_sysroot, entry->filename,
+ (const char *) NULL);
+ if (ldfile_try_open_bfd (name, entry))
+ {
+ entry->filename = name;
+ return true;
+ }
+ free (name);
+ }
+ else if (ldfile_try_open_bfd (entry->filename, entry))
return true;
+
+ if (IS_ABSOLUTE_PATH (entry->filename))
+ return false;
}
- for (search = search_head;
- search != (search_dirs_type *) NULL;
- search = search->next)
+ for (search = search_head; search != NULL; search = search->next)
{
char *string;
- if (entry->dynamic && ! link_info.relocateable)
+ if (entry->flags.dynamic && !bfd_link_relocatable (&link_info))
{
if (ldemul_open_dynamic_archive (arch, search, entry))
return true;
}
- string = (char *) xmalloc (strlen (search->name)
- + strlen (slash)
- + strlen (lib)
- + strlen (entry->filename)
- + strlen (arch)
- + strlen (suffix)
- + 1);
-
- if (entry->is_archive)
- sprintf (string, "%s%s%s%s%s%s", search->name, slash,
- lib, entry->filename, arch, suffix);
- else if (entry->filename[0] == '/' || entry->filename[0] == '.'
-#if defined (__MSDOS__) || defined (_WIN32)
- || entry->filename[0] == '\\'
- || (isalpha (entry->filename[0])
- && entry->filename[1] == ':')
-#endif
- )
- strcpy (string, entry->filename);
+ if (entry->flags.maybe_archive && !entry->flags.full_name_provided)
+ string = concat (search->name, slash, lib, entry->filename,
+ arch, suffix, (const char *) NULL);
else
- sprintf (string, "%s%s%s", search->name, slash, entry->filename);
+ string = concat (search->name, slash, entry->filename,
+ (const char *) 0);
if (ldfile_try_open_bfd (string, entry))
{
return false;
}
-/* Open the input file specified by ENTRY. */
+/* Open the input file specified by ENTRY.
+ PR 4437: Do not stop on the first missing file, but
+ continue processing other input files in case there
+ are more errors to report. */
void
-ldfile_open_file (entry)
- lang_input_statement_type *entry;
+ldfile_open_file (lang_input_statement_type *entry)
{
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)
- einfo (_("%F%P: cannot open %s for %s: %E\n"),
+
+ 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 (_("%F%P: cannot open %s: %E\n"), entry->local_sym_name);
+ einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name);
+
+ entry->flags.missing_file = true;
+ input_flags.missing_file = true;
}
else
{
search_arch_type *arch;
- boolean found = false;
+ bool found = false;
- /* Try to open <filename><suffix> or lib<filename><suffix>.a */
- for (arch = search_arch_head;
- arch != (search_arch_type *) NULL;
- arch = arch->next)
+ /* If extra_search_path is set, entry->filename is a relative path.
+ Search the directory of the current linker script before searching
+ other paths. */
+ if (entry->extra_search_path)
+ {
+ char *path = concat (entry->extra_search_path, slash, entry->filename,
+ (const char *)0);
+ if (ldfile_try_open_bfd (path, entry))
+ {
+ entry->filename = path;
+ entry->flags.search_dirs = false;
+ return;
+ }
+
+ free (path);
+ }
+
+ /* Try to open <filename><suffix> or lib<filename><suffix>.a. */
+ for (arch = search_arch_head; arch != NULL; arch = arch->next)
{
found = ldfile_open_file_search (arch->name, entry, "lib", ".a");
if (found)
/* 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
- einfo (_("%F%P: cannot find %s\n"), entry->local_sym_name);
+ {
+ 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);
+#if SUPPORT_ERROR_HANDLING_SCRIPT
+ else if (error_handling_script != NULL)
+ {
+ char * argv[4];
+ const char * res;
+ int status, err;
+
+ argv[0] = error_handling_script;
+ argv[1] = "missing-lib";
+ argv[2] = (char *) entry->local_sym_name;
+ argv[3] = NULL;
+
+ if (verbose)
+ einfo (_("%P: About to run error handling script '%s' with arguments: '%s' '%s'\n"),
+ argv[0], argv[1], argv[2]);
+
+ res = pex_one (PEX_SEARCH, error_handling_script, argv,
+ N_("error handling script"),
+ NULL /* Send stdout to random, temp file. */,
+ NULL /* Write to stderr. */,
+ &status, &err);
+ if (res != NULL)
+ {
+ einfo (_("%P: Failed to run error handling script '%s', reason: "),
+ error_handling_script);
+ /* FIXME: We assume here that errrno == err. */
+ perror (res);
+ }
+ else /* We ignore the return status of the script
+ and always print the error message. */
+ einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name);
+ }
+#endif
+ else
+ einfo (_("%P: cannot find %s: %E\n"), entry->local_sym_name);
+
+ /* PR 25747: Be kind to users who forgot to add the
+ "lib" prefix to their library when it was created. */
+ for (arch = search_arch_head; arch != NULL; arch = arch->next)
+ {
+ if (ldfile_open_file_search (arch->name, entry, "", ".a"))
+ {
+ const char * base = lbasename (entry->filename);
+
+ einfo (_("%P: note to link with %s use -l:%s or rename it to lib%s\n"),
+ entry->filename, base, base);
+ bfd_close (entry->the_bfd);
+ entry->the_bfd = NULL;
+ break;
+ }
+ }
+
+ 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 (name, exten)
- const char *name;
- const char *exten;
+try_open (const char *name, bool *sysrooted)
{
FILE *result;
- char buff[1000];
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)
- {
- sprintf (buff, "%s%s", name, exten);
- result = fopen (buff, "r");
+ return result;
+}
- 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);
- }
- }
+/* Return TRUE iff directory DIR contains an "ldscripts" subdirectory. */
- return result;
+static bool
+check_for_scripts_dir (char *dir)
+{
+ char *buf;
+ struct stat s;
+ bool res;
+
+ buf = concat (dir, "/ldscripts", (const char *) NULL);
+ res = stat (buf, &s) == 0 && S_ISDIR (s.st_mode);
+ free (buf);
+ return res;
}
-/* Try to open NAME; if that fails, look for it in any directories
- specified with -L, without and with EXTEND apppended. */
+/* Return the default directory for finding script files.
+ We look for the "ldscripts" directory in:
+
+ SCRIPTDIR (passed from Makefile)
+ (adjusted according to the current location of the binary)
+ the dir where this program is (for using it from the build tree). */
-FILE *
-ldfile_find_command_file (name, extend)
- const char *name;
- const char *extend;
+static char *
+find_scripts_dir (void)
{
- search_dirs_type *search;
- FILE *result;
- char buffer[1000];
+ char *dir;
- /* First try raw name. */
- result = try_open (name, "");
- if (result == (FILE *) NULL)
+ dir = make_relative_prefix (program_name, BINDIR, SCRIPTDIR);
+ if (dir)
{
- /* Try now prefixes. */
- for (search = search_head;
- search != (search_dirs_type *) NULL;
- search = search->next)
- {
- sprintf (buffer, "%s%s%s", search->name, slash, name);
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
+ }
- result = try_open (buffer, extend);
- if (result)
- break;
- }
+ dir = make_relative_prefix (program_name, TOOLBINDIR, SCRIPTDIR);
+ if (dir)
+ {
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
}
- return result;
+ /* Look for "ldscripts" in the dir where our binary is. */
+ dir = make_relative_prefix (program_name, ".", ".");
+ if (dir)
+ {
+ if (check_for_scripts_dir (dir))
+ return dir;
+ free (dir);
+ }
+
+ return NULL;
}
-void
-ldfile_open_command_file (name)
- const char *name;
+/* 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. If DEFAULT_ONLY is true, the search is restricted to
+ the default script location. */
+
+static FILE *
+ldfile_find_command_file (const char *name,
+ bool default_only,
+ bool *sysrooted)
{
- FILE *ldlex_input_stack;
- ldlex_input_stack = ldfile_find_command_file (name, "");
+ search_dirs_type *search;
+ FILE *result = NULL;
+ char *path;
+ static search_dirs_type *script_search;
- if (ldlex_input_stack == (FILE *) NULL)
+ if (!default_only)
{
- bfd_set_error (bfd_error_system_call);
- einfo (_("%P%F: cannot open linker script file %s: %E\n"), name);
+ /* First try raw name. */
+ result = try_open (name, sysrooted);
+ if (result != NULL)
+ return result;
}
- lex_push_file (ldlex_input_stack, name);
+ if (!script_search)
+ {
+ char *script_dir = find_scripts_dir ();
+ if (script_dir)
+ {
+ search_dirs_type **save_tail_ptr = search_tail_ptr;
+ search_tail_ptr = &script_search;
+ ldfile_add_library_path (script_dir, true);
+ search_tail_ptr = save_tail_ptr;
+ }
+ }
- ldfile_input_filename = name;
- lineno = 1;
- had_script = true;
-}
+ /* Temporarily append script_search to the path list so that the
+ paths specified with -L will be searched first. */
+ *search_tail_ptr = script_search;
-#ifdef GNU960
-static char *
-gnu960_map_archname (name)
- char *name;
-{
- struct tabentry { char *cmd_switch; char *arch; };
- static struct tabentry arch_tab[] =
- {
- "", "",
- "KA", "ka",
- "KB", "kb",
- "KC", "mc", /* Synonym for MC */
- "MC", "mc",
- "CA", "ca",
- "SA", "ka", /* Functionally equivalent to KA */
- "SB", "kb", /* Functionally equivalent to KB */
- NULL, ""
- };
- struct tabentry *tp;
-
- for (tp = arch_tab; tp->cmd_switch != NULL; tp++)
+ /* Try now prefixes. */
+ for (search = default_only ? script_search : search_head;
+ search != NULL;
+ search = search->next)
{
- if (! strcmp (name,tp->cmd_switch))
+ path = concat (search->name, slash, name, (const char *) NULL);
+ result = try_open (path, sysrooted);
+ free (path);
+ if (result)
break;
}
- if (tp->cmd_switch == NULL)
- einfo (_("%P%F: unknown architecture: %s\n"), name);
+ /* Restore the original path list. */
+ *search_tail_ptr = NULL;
- return tp->arch;
+ return result;
}
-void
-ldfile_add_arch (name)
- char *name;
+enum script_open_style {
+ script_nonT,
+ script_T,
+ script_defaultT
+};
+
+struct script_name_list
{
- search_arch_type *new =
- (search_arch_type *) xmalloc ((bfd_size_type) (sizeof (search_arch_type)));
+ struct script_name_list *next;
+ enum script_open_style open_how;
+ char name[1];
+};
- if (*name != '\0')
+/* Open command file NAME. */
+
+static void
+ldfile_open_command_file_1 (const char *name, enum script_open_style open_how)
+{
+ FILE *ldlex_input_stack;
+ bool sysrooted;
+ static struct script_name_list *processed_scripts = NULL;
+ struct script_name_list *script;
+ size_t len;
+
+ /* PR 24576: Catch the case where the user has accidentally included
+ the same linker script twice. */
+ for (script = processed_scripts; script != NULL; script = script->next)
{
- if (ldfile_output_machine_name[0] != '\0')
+ if ((open_how != script_nonT || script->open_how != script_nonT)
+ && strcmp (name, script->name) == 0)
{
- einfo (_("%P%F: target architecture respecified\n"));
+ einfo (_("%F%P: error: linker script file '%s'"
+ " appears multiple times\n"), name);
return;
}
+ }
- ldfile_output_machine_name = name;
+ /* FIXME: This memory is never freed, but that should not really matter.
+ It will be released when the linker exits, and it is unlikely to ever
+ be more than a few tens of bytes. */
+ len = strlen (name);
+ script = xmalloc (sizeof (*script) + len);
+ script->next = processed_scripts;
+ script->open_how = open_how;
+ memcpy (script->name, name, len + 1);
+ processed_scripts = script;
+
+ ldlex_input_stack = ldfile_find_command_file (name,
+ open_how == script_defaultT,
+ &sysrooted);
+ if (ldlex_input_stack == NULL)
+ {
+ bfd_set_error (bfd_error_system_call);
+ einfo (_("%F%P: cannot open linker script file %s: %E\n"), name);
+ return;
}
- new->next = (search_arch_type *) NULL;
- new->name = gnu960_map_archname (name);
- *search_arch_tail_ptr = new;
- search_arch_tail_ptr = &new->next;
+ track_dependency_files (name);
+
+ lex_push_file (ldlex_input_stack, name, sysrooted);
+
+ lineno = 1;
+
+ saved_script_handle = ldlex_input_stack;
+}
+
+/* Open command file NAME in the current directory, -L directories,
+ the default script location, in that order. */
+
+void
+ldfile_open_command_file (const char *name)
+{
+ ldfile_open_command_file_1 (name, script_nonT);
}
-#else /* not GNU960 */
+void
+ldfile_open_script_file (const char *name)
+{
+ ldfile_open_command_file_1 (name, script_T);
+}
+
+/* Open command file NAME at the default script location. */
void
-ldfile_add_arch (in_name)
- CONST char *in_name;
+ldfile_open_default_command_file (const char *name)
{
- char *name = buystring (in_name);
- search_arch_type *new =
- (search_arch_type *) xmalloc (sizeof (search_arch_type));
+ ldfile_open_command_file_1 (name, script_defaultT);
+}
+
+void
+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));
ldfile_output_machine_name = in_name;
- new->name = name;
- new->next = (search_arch_type *) NULL;
+ new_arch->name = name;
+ new_arch->next = NULL;
while (*name)
{
- if (isupper ((unsigned char) *name))
- *name = tolower ((unsigned char) *name);
+ *name = TOLOWER (*name);
name++;
}
- *search_arch_tail_ptr = new;
- search_arch_tail_ptr = &new->next;
+ *search_arch_tail_ptr = new_arch;
+ search_arch_tail_ptr = &new_arch->next;
}
-#endif
/* Set the output architecture. */
void
-ldfile_set_output_arch (string)
- CONST char *string;
+ldfile_set_output_arch (const char *string, enum bfd_architecture defarch)
{
const bfd_arch_info_type *arch = bfd_scan_arch (string);
ldfile_output_machine = arch->mach;
ldfile_output_machine_name = arch->printable_name;
}
+ else if (defarch != bfd_arch_unknown)
+ ldfile_output_architecture = defarch;
else
- {
- einfo (_("%P%F: cannot represent machine `%s'\n"), string);
- }
+ einfo (_("%F%P: cannot represent machine `%s'\n"), string);
}
projects / thirdparty / binutils-gdb.git / blobdiff