/* ldemul.c -- clearing house for ld emulation states
- Copyright (C) 1991, 92, 93, 94, 95, 96, 97, 98, 1999
- Free Software Foundation, Inc.
+ Copyright (C) 1991-2020 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. */
-#include "bfd.h"
#include "sysdep.h"
+#include "bfd.h"
+#include "getopt.h"
+#include "bfdlink.h"
+#include "ctf-api.h"
#include "ld.h"
-#include "ldemul.h"
#include "ldmisc.h"
#include "ldexp.h"
#include "ldlang.h"
#include "ldfile.h"
+#include "ldemul.h"
#include "ldmain.h"
#include "ldemul-list.h"
-ld_emulation_xfer_type *ld_emulation;
+static ld_emulation_xfer_type *ld_emulation;
void
-ldemul_hll(name)
- char *name;
+ldemul_hll (char *name)
{
- ld_emulation->hll(name);
+ ld_emulation->hll (name);
}
-
-void ldemul_syslib(name)
- char *name;
+void
+ldemul_syslib (char *name)
{
- ld_emulation->syslib(name);
+ ld_emulation->syslib (name);
}
void
-ldemul_after_parse()
+ldemul_after_parse (void)
{
- ld_emulation->after_parse();
+ ld_emulation->after_parse ();
}
void
-ldemul_before_parse()
+ldemul_before_parse (void)
{
- ld_emulation->before_parse();
+ ld_emulation->before_parse ();
}
void
-ldemul_after_open ()
+ldemul_after_open (void)
{
ld_emulation->after_open ();
}
-void
-ldemul_after_allocation()
+void
+ldemul_after_check_relocs (void)
+{
+ ld_emulation->after_check_relocs ();
+}
+
+void
+ldemul_before_place_orphans (void)
{
- ld_emulation->after_allocation();
+ ld_emulation->before_place_orphans ();
}
-void
-ldemul_before_allocation()
+void
+ldemul_after_allocation (void)
{
- if (ld_emulation->before_allocation)
- ld_emulation->before_allocation();
+ ld_emulation->after_allocation ();
}
+void
+ldemul_before_allocation (void)
+{
+ ld_emulation->before_allocation ();
+}
void
-ldemul_set_output_arch()
+ldemul_set_output_arch (void)
{
- ld_emulation->set_output_arch();
+ ld_emulation->set_output_arch ();
}
void
-ldemul_finish()
+ldemul_finish (void)
{
- if (ld_emulation->finish)
- ld_emulation->finish();
+ ld_emulation->finish ();
}
void
-ldemul_set_symbols()
+ldemul_set_symbols (void)
{
if (ld_emulation->set_symbols)
- ld_emulation->set_symbols();
+ ld_emulation->set_symbols ();
}
void
-ldemul_create_output_section_statements()
+ldemul_create_output_section_statements (void)
{
if (ld_emulation->create_output_section_statements)
- ld_emulation->create_output_section_statements();
+ ld_emulation->create_output_section_statements ();
}
char *
-ldemul_get_script(isfile)
- int *isfile;
+ldemul_get_script (int *isfile)
{
- return ld_emulation->get_script(isfile);
+ return ld_emulation->get_script (isfile);
}
-boolean
-ldemul_open_dynamic_archive (arch, search, entry)
- const char *arch;
- search_dirs_type *search;
- lang_input_statement_type *entry;
+bfd_boolean
+ldemul_open_dynamic_archive (const char *arch, search_dirs_type *search,
+ lang_input_statement_type *entry)
{
if (ld_emulation->open_dynamic_archive)
return (*ld_emulation->open_dynamic_archive) (arch, search, entry);
- return false;
+ return FALSE;
}
-boolean
-ldemul_place_orphan (file, s)
- lang_input_statement_type *file;
- asection *s;
+lang_output_section_statement_type *
+ldemul_place_orphan (asection *s, const char *name, int constraint)
{
if (ld_emulation->place_orphan)
- return (*ld_emulation->place_orphan) (file, s);
- return false;
+ return (*ld_emulation->place_orphan) (s, name, constraint);
+ return NULL;
}
-int
-ldemul_parse_args (argc, argv)
- int argc;
- char **argv;
+void
+ldemul_add_options (int ns, char **shortopts, int nl,
+ struct option **longopts, int nrl,
+ struct option **really_longopts)
+{
+ if (ld_emulation->add_options)
+ (*ld_emulation->add_options) (ns, shortopts, nl, longopts,
+ nrl, really_longopts);
+}
+
+bfd_boolean
+ldemul_handle_option (int optc)
+{
+ if (ld_emulation->handle_option)
+ return (*ld_emulation->handle_option) (optc);
+ return FALSE;
+}
+
+bfd_boolean
+ldemul_parse_args (int argc, char **argv)
{
- /* Try and use the emulation parser if there is one. */
+ /* Try and use the emulation parser if there is one. */
if (ld_emulation->parse_args)
- {
- return ld_emulation->parse_args (argc, argv);
- }
- return 0;
+ return (*ld_emulation->parse_args) (argc, argv);
+ return FALSE;
}
/* Let the emulation code handle an unrecognized file. */
-boolean
-ldemul_unrecognized_file (entry)
- lang_input_statement_type *entry;
+bfd_boolean
+ldemul_unrecognized_file (lang_input_statement_type *entry)
{
if (ld_emulation->unrecognized_file)
return (*ld_emulation->unrecognized_file) (entry);
- return false;
+ return FALSE;
}
/* Let the emulation code handle a recognized file. */
-boolean
-ldemul_recognized_file (entry)
- lang_input_statement_type *entry;
+bfd_boolean
+ldemul_recognized_file (lang_input_statement_type *entry)
{
if (ld_emulation->recognized_file)
return (*ld_emulation->recognized_file) (entry);
- return false;
+ return FALSE;
}
char *
-ldemul_choose_target()
+ldemul_choose_target (int argc, char **argv)
{
- return ld_emulation->choose_target();
+ return ld_emulation->choose_target (argc, argv);
}
+
/* The default choose_target function. */
char *
-ldemul_default_target()
+ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
{
char *from_outside = getenv (TARGET_ENVIRON);
- if (from_outside != (char *)NULL)
+ if (from_outside != (char *) NULL)
return from_outside;
return ld_emulation->target_name;
}
-void
-after_parse_default()
+/* If the entry point was not specified as an address, then add the
+ symbol as undefined. This will cause ld to extract an archive
+ element defining the entry if ld is linking against such an archive.
+
+ We don't do this when generating shared libraries unless given -e
+ on the command line, because most shared libs are not designed to
+ be run as an executable. However, some are, eg. glibc ld.so and
+ may rely on the default linker script supplying ENTRY. So we can't
+ remove the ENTRY from the script, but would rather not insert
+ undefined _start syms. */
+
+void
+after_parse_default (void)
{
+ if (entry_symbol.name != NULL
+ && (bfd_link_executable (&link_info) || entry_from_cmdline))
+ {
+ bfd_boolean is_vma = FALSE;
+
+ if (entry_from_cmdline)
+ {
+ const char *send;
+ bfd_scan_vma (entry_symbol.name, &send, 0);
+ is_vma = *send == '\0';
+ }
+ if (!is_vma)
+ ldlang_add_undef (entry_symbol.name, entry_from_cmdline);
+ }
+ if (config.maxpagesize == 0)
+ config.maxpagesize = bfd_emul_get_maxpagesize (default_target);
+ if (config.commonpagesize == 0)
+ config.commonpagesize = bfd_emul_get_commonpagesize (default_target,
+ link_info.relro);
}
void
-after_open_default ()
+after_open_default (void)
{
+ link_info.big_endian = TRUE;
+
+ if (bfd_big_endian (link_info.output_bfd))
+ ;
+ else if (bfd_little_endian (link_info.output_bfd))
+ link_info.big_endian = FALSE;
+ else
+ {
+ if (command_line.endian == ENDIAN_BIG)
+ ;
+ else if (command_line.endian == ENDIAN_LITTLE)
+ link_info.big_endian = FALSE;
+ else if (command_line.endian == ENDIAN_UNSET)
+ {
+ LANG_FOR_EACH_INPUT_STATEMENT (s)
+ if (s->the_bfd != NULL)
+ {
+ if (bfd_little_endian (s->the_bfd))
+ link_info.big_endian = FALSE;
+ break;
+ }
+ }
+ }
}
void
-after_allocation_default()
+after_check_relocs_default (void)
{
+}
+void
+before_place_orphans_default (void)
+{
}
void
-before_allocation_default()
+after_allocation_default (void)
{
+ lang_relax_sections (FALSE);
+}
+void
+before_allocation_default (void)
+{
+ if (!bfd_link_relocatable (&link_info))
+ strip_excluded_output_sections ();
}
void
-set_output_arch_default()
+finish_default (void)
{
- /* Set the output architecture and machine if possible */
- bfd_set_arch_mach(output_bfd,
- ldfile_output_architecture, ldfile_output_machine);
+ if (!bfd_link_relocatable (&link_info))
+ _bfd_fix_excluded_sec_syms (link_info.output_bfd, &link_info);
}
-/*ARGSUSED*/
void
-syslib_default(ignore)
- char *ignore ATTRIBUTE_UNUSED;
+set_output_arch_default (void)
{
- info_msg (_("%S SYSLIB ignored\n"));
+ /* Set the output architecture and machine if possible. */
+ bfd_set_arch_mach (link_info.output_bfd,
+ ldfile_output_architecture, ldfile_output_machine);
+
+ bfd_emul_set_maxpagesize (output_target, config.maxpagesize);
+ bfd_emul_set_commonpagesize (output_target, config.commonpagesize);
}
-/*ARGSUSED*/
void
-hll_default(ignore)
- char *ignore ATTRIBUTE_UNUSED;
+syslib_default (char *ignore ATTRIBUTE_UNUSED)
{
- info_msg (_("%S HLL ignored\n"));
+ info_msg (_("%pS SYSLIB ignored\n"), NULL);
+}
+
+void
+hll_default (char *ignore ATTRIBUTE_UNUSED)
+{
+ info_msg (_("%pS HLL ignored\n"), NULL);
}
ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST };
void
-ldemul_choose_mode(target)
- char *target;
-{
- ld_emulation_xfer_type **eptr = ld_emulations;
- /* Ignore "gld" prefix. */
- if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd')
- target += 3;
- for (; *eptr; eptr++)
- {
- if (strcmp(target, (*eptr)->emulation_name) == 0)
- {
- ld_emulation = *eptr;
- return;
- }
- }
- einfo (_("%P: unrecognised emulation mode: %s\n"), target);
- einfo (_("Supported emulations: "));
- ldemul_list_emulations (stderr);
- einfo ("%F\n");
+ldemul_choose_mode (char *target)
+{
+ ld_emulation_xfer_type **eptr = ld_emulations;
+ /* Ignore "gld" prefix. */
+ if (target[0] == 'g' && target[1] == 'l' && target[2] == 'd')
+ target += 3;
+ for (; *eptr; eptr++)
+ {
+ if (strcmp (target, (*eptr)->emulation_name) == 0)
+ {
+ ld_emulation = *eptr;
+ return;
+ }
+ }
+ einfo (_("%P: unrecognised emulation mode: %s\n"), target);
+ einfo (_("Supported emulations: "));
+ ldemul_list_emulations (stderr);
+ einfo ("%F\n");
}
void
-ldemul_list_emulations (f)
- FILE *f;
+ldemul_list_emulations (FILE *f)
{
ld_emulation_xfer_type **eptr = ld_emulations;
- boolean first = true;
+ bfd_boolean first = TRUE;
for (; *eptr; eptr++)
{
if (first)
- first = false;
+ first = FALSE;
else
fprintf (f, " ");
fprintf (f, "%s", (*eptr)->emulation_name);
}
void
-ldemul_list_emulation_options (f)
- FILE * f;
+ldemul_list_emulation_options (FILE *f)
{
- ld_emulation_xfer_type ** eptr;
+ ld_emulation_xfer_type **eptr;
int options_found = 0;
-
- for (eptr = ld_emulations; * eptr; eptr ++)
+
+ for (eptr = ld_emulations; *eptr; eptr++)
{
- ld_emulation_xfer_type * emul = * eptr;
-
+ ld_emulation_xfer_type *emul = *eptr;
+
if (emul->list_options)
{
fprintf (f, "%s: \n", emul->emulation_name);
-
+
emul->list_options (f);
options_found = 1;
}
}
-
- if (! options_found)
+
+ if (!options_found)
fprintf (f, _(" no emulation specific options.\n"));
}
+
+int
+ldemul_find_potential_libraries (char *name, lang_input_statement_type *entry)
+{
+ if (ld_emulation->find_potential_libraries)
+ return ld_emulation->find_potential_libraries (name, entry);
+
+ return 0;
+}
+
+struct bfd_elf_version_expr *
+ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry)
+{
+ if (ld_emulation->new_vers_pattern)
+ entry = (*ld_emulation->new_vers_pattern) (entry);
+ return entry;
+}
+
+void
+ldemul_extra_map_file_text (bfd *abfd, struct bfd_link_info *info, FILE *mapf)
+{
+ if (ld_emulation->extra_map_file_text)
+ ld_emulation->extra_map_file_text (abfd, info, mapf);
+}
+
+int
+ldemul_emit_ctf_early (void)
+{
+ if (ld_emulation->emit_ctf_early)
+ return ld_emulation->emit_ctf_early ();
+ /* If the emulation doesn't know if it wants to emit CTF early, it is going
+ to do so. */
+ return 1;
+}
+
+void
+ldemul_examine_strtab_for_ctf (struct ctf_file *ctf_output,
+ struct elf_sym_strtab *syms,
+ bfd_size_type symcount,
+ struct elf_strtab_hash *symstrtab)
+
+{
+ if (ld_emulation->examine_strtab_for_ctf)
+ ld_emulation->examine_strtab_for_ctf (ctf_output, syms,
+ symcount, symstrtab);
+}
+
+bfd_boolean
+ldemul_print_symbol (struct bfd_link_hash_entry *hash_entry, void *ptr)
+{
+ if (ld_emulation->print_symbol)
+ return ld_emulation->print_symbol (hash_entry, ptr);
+ return print_one_symbol (hash_entry, ptr);
+}
projects / deliverable / binutils-gdb.git / blobdiff