X-Git-Url: https://git.libre-soc.org/?a=blobdiff_plain;f=ld%2Fldemul.c;h=9c51af0bd6da411fe76a22b27ab5dfba96821db1;hb=43e05cd4f48b550023819d823fec02abf54e26d3;hp=45869d8770960cbdb025d69df129a2655ce2d81a;hpb=34875e6487738a81c2b09979b804556bc8ea885b;p=binutils-gdb.git

diff --git a/ld/ldemul.c b/ld/ldemul.c
index 45869d87709..9c51af0bd6d 100644
--- a/ld/ldemul.c
+++ b/ld/ldemul.c
@@ -1,29 +1,28 @@
 /* ldemul.c -- clearing house for ld emulation states
-   Copyright 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-   2001, 2002, 2003
-   Free Software Foundation, Inc.
+   Copyright (C) 1991-2021 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 "config.h"
-#include "bfd.h"
 #include "sysdep.h"
+#include "bfd.h"
 #include "getopt.h"
+#include "bfdlink.h"
+#include "ctf-api.h"
 
 #include "ld.h"
 #include "ldmisc.h"
@@ -34,7 +33,7 @@ Software Foundation, 59 Temple Place - Suite 330, Boston, MA
 #include "ldmain.h"
 #include "ldemul-list.h"
 
-ld_emulation_xfer_type *ld_emulation;
+static ld_emulation_xfer_type *ld_emulation;
 
 void
 ldemul_hll (char *name)
@@ -66,6 +65,18 @@ ldemul_after_open (void)
   ld_emulation->after_open ();
 }
 
+void
+ldemul_after_check_relocs (void)
+{
+  ld_emulation->after_check_relocs ();
+}
+
+void
+ldemul_before_place_orphans (void)
+{
+  ld_emulation->before_place_orphans ();
+}
+
 void
 ldemul_after_allocation (void)
 {
@@ -75,8 +86,7 @@ ldemul_after_allocation (void)
 void
 ldemul_before_allocation (void)
 {
-  if (ld_emulation->before_allocation)
-    ld_emulation->before_allocation ();
+  ld_emulation->before_allocation ();
 }
 
 void
@@ -88,8 +98,7 @@ ldemul_set_output_arch (void)
 void
 ldemul_finish (void)
 {
-  if (ld_emulation->finish)
-    ld_emulation->finish ();
+  ld_emulation->finish ();
 }
 
 void
@@ -112,21 +121,21 @@ ldemul_get_script (int *isfile)
   return ld_emulation->get_script (isfile);
 }
 
-bfd_boolean
+bool
 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;
 }
 
-bfd_boolean
-ldemul_place_orphan (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;
 }
 
 void
@@ -139,41 +148,41 @@ ldemul_add_options (int ns, char **shortopts, int nl,
 				  nrl, really_longopts);
 }
 
-bfd_boolean
+bool
 ldemul_handle_option (int optc)
 {
   if (ld_emulation->handle_option)
     return (*ld_emulation->handle_option) (optc);
-  return FALSE;
+  return false;
 }
 
-bfd_boolean
+bool
 ldemul_parse_args (int argc, char **argv)
 {
   /* Try and use the emulation parser if there is one.  */
   if (ld_emulation->parse_args)
     return (*ld_emulation->parse_args) (argc, argv);
-  return FALSE;
+  return false;
 }
 
 /* Let the emulation code handle an unrecognized file.  */
 
-bfd_boolean
+bool
 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.  */
 
-bfd_boolean
+bool
 ldemul_recognized_file (lang_input_statement_type *entry)
 {
   if (ld_emulation->recognized_file)
     return (*ld_emulation->recognized_file) (entry);
-  return FALSE;
+  return false;
 }
 
 char *
@@ -194,44 +203,118 @@ ldemul_default_target (int argc ATTRIBUTE_UNUSED, char **argv ATTRIBUTE_UNUSED)
   return ld_emulation->target_name;
 }
 
+/* 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))
+    {
+      bool 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 (link_info.maxpagesize == 0)
+    link_info.maxpagesize = bfd_emul_get_maxpagesize (default_target);
+  if (link_info.commonpagesize == 0)
+    link_info.commonpagesize = bfd_emul_get_commonpagesize (default_target,
+							    link_info.relro);
 }
 
 void
 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_check_relocs_default (void)
+{
+}
+
+void
+before_place_orphans_default (void)
 {
 }
 
 void
 after_allocation_default (void)
 {
+  lang_relax_sections (false);
 }
 
 void
 before_allocation_default (void)
 {
+  if (!bfd_link_relocatable (&link_info))
+    strip_excluded_output_sections ();
+}
+
+void
+finish_default (void)
+{
+  if (!bfd_link_relocatable (&link_info))
+    _bfd_fix_excluded_sec_syms (link_info.output_bfd, &link_info);
 }
 
 void
 set_output_arch_default (void)
 {
   /* Set the output architecture and machine if possible.  */
-  bfd_set_arch_mach (output_bfd,
+  bfd_set_arch_mach (link_info.output_bfd,
 		     ldfile_output_architecture, ldfile_output_machine);
 }
 
 void
 syslib_default (char *ignore ATTRIBUTE_UNUSED)
 {
-  info_msg (_("%S SYSLIB ignored\n"));
+  info_msg (_("%pS SYSLIB ignored\n"), NULL);
 }
 
 void
 hll_default (char *ignore ATTRIBUTE_UNUSED)
 {
-  info_msg (_("%S HLL ignored\n"));
+  info_msg (_("%pS HLL ignored\n"), NULL);
 }
 
 ld_emulation_xfer_type *ld_emulations[] = { EMULATION_LIST };
@@ -261,12 +344,12 @@ void
 ldemul_list_emulations (FILE *f)
 {
   ld_emulation_xfer_type **eptr = ld_emulations;
-  bfd_boolean first = TRUE;
+  bool first = true;
 
   for (; *eptr; eptr++)
     {
       if (first)
-	first = FALSE;
+	first = false;
       else
 	fprintf (f, " ");
       fprintf (f, "%s", (*eptr)->emulation_name);
@@ -293,7 +376,7 @@ ldemul_list_emulation_options (FILE *f)
 	}
     }
 
-  if (! options_found)
+  if (!options_found)
     fprintf (f, _("  no emulation specific options.\n"));
 }
 
@@ -313,3 +396,44 @@ ldemul_new_vers_pattern (struct bfd_elf_version_expr *entry)
     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_acquire_strings_for_ctf (struct ctf_dict *ctf_output,
+				struct elf_strtab_hash *symstrtab)
+{
+  if (ld_emulation->acquire_strings_for_ctf)
+    ld_emulation->acquire_strings_for_ctf (ctf_output, symstrtab);
+}
+
+void
+ldemul_new_dynsym_for_ctf (struct ctf_dict *ctf_output, int symidx,
+			   struct elf_internal_sym *sym)
+{
+  if (ld_emulation->new_dynsym_for_ctf)
+    ld_emulation->new_dynsym_for_ctf (ctf_output, symidx, sym);
+}
+
+bool
+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);
+}