556 lines
13 KiB
C
556 lines
13 KiB
C
/* Linker file opening and searching.
|
|
Copyright 1991, 1992, 1993, 1994, 1995, 1998, 1999, 2000, 2001, 2002
|
|
Free Software Foundation, Inc.
|
|
|
|
This file is part of GLD, the Gnu Linker.
|
|
|
|
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.
|
|
|
|
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.
|
|
|
|
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. */
|
|
|
|
/* ldfile.c: look after all the file stuff. */
|
|
|
|
#include "bfd.h"
|
|
#include "sysdep.h"
|
|
#include "bfdlink.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 "ldlex.h"
|
|
#include "ldemul.h"
|
|
#include "libiberty.h"
|
|
|
|
const char *ldfile_input_filename;
|
|
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;
|
|
|
|
#ifndef MPW
|
|
#ifdef VMS
|
|
char *slash = "";
|
|
#else
|
|
#if defined (_WIN32) && ! defined (__CYGWIN32__)
|
|
char *slash = "\\";
|
|
#else
|
|
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 {
|
|
char *name;
|
|
struct search_arch *next;
|
|
} search_arch_type;
|
|
|
|
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));
|
|
|
|
void
|
|
ldfile_add_library_path (name, cmdline)
|
|
const char *name;
|
|
boolean cmdline;
|
|
{
|
|
search_dirs_type *new;
|
|
|
|
if (!cmdline && config.only_cmd_line_lib_dirs)
|
|
return;
|
|
|
|
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;
|
|
}
|
|
|
|
/* 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;
|
|
{
|
|
entry->the_bfd = bfd_openr (attempt, entry->target);
|
|
|
|
if (trace_file_tries)
|
|
{
|
|
if (entry->the_bfd == NULL)
|
|
info_msg (_("attempt to open %s failed\n"), attempt);
|
|
else
|
|
info_msg (_("attempt to open %s succeeded\n"), attempt);
|
|
}
|
|
|
|
if (entry->the_bfd == NULL)
|
|
{
|
|
if (bfd_get_error () == bfd_error_invalid_target)
|
|
einfo (_("%F%P: invalid BFD target `%s'\n"), entry->target);
|
|
return false;
|
|
}
|
|
|
|
/* 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 (entry->search_dirs_flag)
|
|
{
|
|
bfd *check;
|
|
|
|
if (bfd_check_format (entry->the_bfd, bfd_archive))
|
|
check = bfd_openr_next_archived_file (entry->the_bfd, NULL);
|
|
else
|
|
check = entry->the_bfd;
|
|
|
|
if (check != NULL)
|
|
{
|
|
if (! bfd_check_format (check, bfd_object))
|
|
{
|
|
if (check == entry->the_bfd
|
|
&& 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_both ();
|
|
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);
|
|
if (arg2) free (arg2);
|
|
if (arg3) free (arg3);
|
|
break;
|
|
case NAME:
|
|
case LNAME:
|
|
case VERS_IDENTIFIER:
|
|
case VERS_TAG:
|
|
free (yylval.name);
|
|
break;
|
|
case INT:
|
|
if (yylval.bigint.str)
|
|
free (yylval.bigint.str);
|
|
break;
|
|
}
|
|
token = yylex ();
|
|
}
|
|
ldfile_assumed_script = false;
|
|
fclose (yyin);
|
|
yyin = NULL;
|
|
if (skip)
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
if ((bfd_arch_get_compatible (check, output_bfd) == NULL)
|
|
/* XCOFF archives can have 32 and 64 bit objects */
|
|
&& ! (bfd_get_flavour (check) == bfd_target_xcoff_flavour
|
|
&& bfd_get_flavour (output_bfd) == bfd_target_xcoff_flavour
|
|
&& bfd_check_format (entry->the_bfd, bfd_archive)))
|
|
{
|
|
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;
|
|
}
|
|
}
|
|
}
|
|
|
|
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;
|
|
{
|
|
search_dirs_type *search;
|
|
|
|
/* If this is not an archive, try to open it in the current
|
|
directory first. */
|
|
if (! entry->is_archive)
|
|
{
|
|
if (ldfile_try_open_bfd (entry->filename, entry))
|
|
return true;
|
|
}
|
|
|
|
for (search = search_head;
|
|
search != (search_dirs_type *) NULL;
|
|
search = search->next)
|
|
{
|
|
char *string;
|
|
|
|
if (entry->dynamic && ! link_info.relocateable)
|
|
{
|
|
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);
|
|
else
|
|
sprintf (string, "%s%s%s", search->name, slash, entry->filename);
|
|
|
|
if (ldfile_try_open_bfd (string, entry))
|
|
{
|
|
entry->filename = string;
|
|
return true;
|
|
}
|
|
|
|
free (string);
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/* Open the input file specified by ENTRY. */
|
|
|
|
void
|
|
ldfile_open_file (entry)
|
|
lang_input_statement_type *entry;
|
|
{
|
|
if (entry->the_bfd != NULL)
|
|
return;
|
|
|
|
if (! entry->search_dirs_flag)
|
|
{
|
|
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"),
|
|
entry->filename, entry->local_sym_name);
|
|
else
|
|
einfo (_("%F%P: cannot open %s: %E\n"), entry->local_sym_name);
|
|
}
|
|
else
|
|
{
|
|
search_arch_type *arch;
|
|
boolean 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)
|
|
{
|
|
found = ldfile_open_file_search (arch->name, entry, "lib", ".a");
|
|
if (found)
|
|
break;
|
|
#ifdef VMS
|
|
found = ldfile_open_file_search (arch->name, entry, ":lib", ".a");
|
|
if (found)
|
|
break;
|
|
#endif
|
|
found = ldemul_find_potential_libraries (arch->name, entry);
|
|
if (found)
|
|
break;
|
|
}
|
|
|
|
/* If we have found the file, we don't need to search directories
|
|
again. */
|
|
if (found)
|
|
entry->search_dirs_flag = false;
|
|
else
|
|
einfo (_("%F%P: cannot find %s\n"), entry->local_sym_name);
|
|
}
|
|
}
|
|
|
|
/* Try to open NAME; if that fails, try NAME with EXTEN appended to it. */
|
|
|
|
static FILE *
|
|
try_open (name, exten)
|
|
const char *name;
|
|
const char *exten;
|
|
{
|
|
FILE *result;
|
|
char buff[1000];
|
|
|
|
result = fopen (name, "r");
|
|
|
|
if (trace_file_tries)
|
|
{
|
|
if (result == NULL)
|
|
info_msg (_("cannot find script file %s\n"), name);
|
|
else
|
|
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");
|
|
|
|
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 result;
|
|
}
|
|
|
|
/* Try to open NAME; if that fails, look for it in any directories
|
|
specified with -L, without and with EXTEND apppended. */
|
|
|
|
FILE *
|
|
ldfile_find_command_file (name, extend)
|
|
const char *name;
|
|
const char *extend;
|
|
{
|
|
search_dirs_type *search;
|
|
FILE *result;
|
|
char buffer[1000];
|
|
|
|
/* First try raw name. */
|
|
result = try_open (name, "");
|
|
if (result == (FILE *) NULL)
|
|
{
|
|
/* Try now prefixes. */
|
|
for (search = search_head;
|
|
search != (search_dirs_type *) NULL;
|
|
search = search->next)
|
|
{
|
|
sprintf (buffer, "%s%s%s", search->name, slash, name);
|
|
|
|
result = try_open (buffer, extend);
|
|
if (result)
|
|
break;
|
|
}
|
|
}
|
|
|
|
return result;
|
|
}
|
|
|
|
void
|
|
ldfile_open_command_file (name)
|
|
const char *name;
|
|
{
|
|
FILE *ldlex_input_stack;
|
|
ldlex_input_stack = ldfile_find_command_file (name, "");
|
|
|
|
if (ldlex_input_stack == (FILE *) NULL)
|
|
{
|
|
bfd_set_error (bfd_error_system_call);
|
|
einfo (_("%P%F: cannot open linker script file %s: %E\n"), name);
|
|
}
|
|
|
|
lex_push_file (ldlex_input_stack, name);
|
|
|
|
ldfile_input_filename = name;
|
|
lineno = 1;
|
|
|
|
saved_script_handle = ldlex_input_stack;
|
|
}
|
|
|
|
#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++)
|
|
{
|
|
if (! strcmp (name,tp->cmd_switch))
|
|
break;
|
|
}
|
|
|
|
if (tp->cmd_switch == NULL)
|
|
einfo (_("%P%F: unknown architecture: %s\n"), name);
|
|
|
|
return tp->arch;
|
|
}
|
|
|
|
void
|
|
ldfile_add_arch (name)
|
|
char *name;
|
|
{
|
|
search_arch_type *new =
|
|
(search_arch_type *) xmalloc ((bfd_size_type) (sizeof (search_arch_type)));
|
|
|
|
if (*name != '\0')
|
|
{
|
|
if (ldfile_output_machine_name[0] != '\0')
|
|
{
|
|
einfo (_("%P%F: target architecture respecified\n"));
|
|
return;
|
|
}
|
|
|
|
ldfile_output_machine_name = name;
|
|
}
|
|
|
|
new->next = (search_arch_type *) NULL;
|
|
new->name = gnu960_map_archname (name);
|
|
*search_arch_tail_ptr = new;
|
|
search_arch_tail_ptr = &new->next;
|
|
}
|
|
|
|
#else /* not GNU960 */
|
|
|
|
void
|
|
ldfile_add_arch (in_name)
|
|
const char *in_name;
|
|
{
|
|
char *name = xstrdup (in_name);
|
|
search_arch_type *new =
|
|
(search_arch_type *) xmalloc (sizeof (search_arch_type));
|
|
|
|
ldfile_output_machine_name = in_name;
|
|
|
|
new->name = name;
|
|
new->next = (search_arch_type *) NULL;
|
|
while (*name)
|
|
{
|
|
*name = TOLOWER (*name);
|
|
name++;
|
|
}
|
|
*search_arch_tail_ptr = new;
|
|
search_arch_tail_ptr = &new->next;
|
|
|
|
}
|
|
#endif
|
|
|
|
/* Set the output architecture. */
|
|
|
|
void
|
|
ldfile_set_output_arch (string)
|
|
const char *string;
|
|
{
|
|
const bfd_arch_info_type *arch = bfd_scan_arch (string);
|
|
|
|
if (arch)
|
|
{
|
|
ldfile_output_architecture = arch->arch;
|
|
ldfile_output_machine = arch->mach;
|
|
ldfile_output_machine_name = arch->printable_name;
|
|
}
|
|
else
|
|
{
|
|
einfo (_("%P%F: cannot represent machine `%s'\n"), string);
|
|
}
|
|
}
|