ld/emultempl/vms.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright (C) 2010-2024 Free Software Foundation, Inc.
   3 #
   4 # This file is part of the GNU Binutils.
   5 #
   6 # This program is free software; you can redistribute it and/or modify
   7 # it under the terms of the GNU General Public License as published by
   8 # the Free Software Foundation; either version 3 of the License, or
   9 # (at your option) any later version.
  10 #
  11 # This program is distributed in the hope that it will be useful,
  12 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  13 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14 # GNU General Public License for more details.
  15 #
  16 # You should have received a copy of the GNU General Public License
  17 # along with this program; if not, write to the Free Software
  18 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  19 # MA 02110-1301, USA.
  20 #
  21
  22 # This file is sourced from generic.em.
  23
  24 fragment <<EOF
  25 #include "libiberty.h"
  26 #include "getopt.h"
  27 #include "ldlex.h"
  28
  29 static void
  30 gld${EMULATION_NAME}_before_parse (void)
  31 {
  32   ldfile_set_output_arch ("${ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
  33   input_flags.dynamic = true;
  34   config.has_shared = false; /* Not yet.  */
  35
  36   /* For ia64, harmless for alpha.  */
  37   link_info.emit_hash = false;
  38   link_info.spare_dynamic_tags = 0;
  39 }
  40
  41 /* This is called before the input files are opened.  We add the
  42    standard library.  */
  43
  44 static void
  45 gld${EMULATION_NAME}_create_output_section_statements (void)
  46 {
  47   lang_add_input_file ("imagelib", lang_input_file_is_l_enum, NULL);
  48   lang_add_input_file ("starlet", lang_input_file_is_l_enum, NULL);
  49   lang_add_input_file ("sys\$public_vectors", lang_input_file_is_l_enum, NULL);
  50 }
  51
  52 /* Try to open a dynamic archive.  This is where we know that VMS
  53    shared images (dynamic libraries) have an extension of .exe.  */
  54
  55 static bool
  56 gld${EMULATION_NAME}_open_dynamic_archive (const char *arch ATTRIBUTE_UNUSED,
  57                                            search_dirs_type *search,
  58                                            lang_input_statement_type *entry)
  59 {
  60   char *string;
  61
  62   if (! entry->flags.maybe_archive || entry->flags.full_name_provided)
  63     return false;
  64
  65   string = (char *) xmalloc (strlen (search->name)
  66                              + strlen (entry->filename)
  67                              + sizeof "/.exe");
  68
  69   sprintf (string, "%s/%s.exe", search->name, entry->filename);
  70
  71   if (! ldfile_try_open_bfd (string, entry))
  72     {
  73       free (string);
  74       return false;
  75     }
  76
  77   entry->filename = string;
  78
  79   return true;
  80 }
  81
  82 static int
  83 gld${EMULATION_NAME}_find_potential_libraries
  84   (char *name, lang_input_statement_type *entry)
  85 {
  86   return ldfile_open_file_search (name, entry, "", ".olb");
  87 }
  88
  89 /* Place an orphan section.  We use this to put random OVR sections.
  90    Much borrowed from elf.em.  */
  91
  92 static lang_output_section_statement_type *
  93 vms_place_orphan (asection *s,
  94                   const char *secname ATTRIBUTE_UNUSED,
  95                   int constraint ATTRIBUTE_UNUSED)
  96 {
  97   static struct orphan_save hold_data =
  98     {
  99       "\$DATA\$",
 100       SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
 101       0, 0, 0, 0
 102     };
 103
 104   /* We have nothing to say for anything other than a final link or an excluded
 105      section.  */
 106   if (bfd_link_relocatable (&link_info)
 107       || (s->flags & (SEC_EXCLUDE | SEC_LOAD)) != SEC_LOAD)
 108     return NULL;
 109
 110   /* FIXME: we should place sections by VMS program section flags.  */
 111
 112   /* Only handle data sections.  */
 113   if ((s->flags & SEC_DATA) == 0)
 114     return NULL;
 115
 116   if (hold_data.os == NULL)
 117     hold_data.os = lang_output_section_find (hold_data.name);
 118
 119   if (hold_data.os != NULL)
 120     {
 121       lang_add_section (&hold_data.os->children, s, NULL, NULL, hold_data.os);
 122       return hold_data.os;
 123     }
 124   else
 125     return NULL;
 126 }
 127
 128 /* VMS specific options.  */
 129
 130 static void
 131 gld${EMULATION_NAME}_add_options
 132   (int ns ATTRIBUTE_UNUSED,
 133    char **shortopts ATTRIBUTE_UNUSED,
 134    int nl,
 135    struct option **longopts,
 136    int nrl ATTRIBUTE_UNUSED,
 137    struct option **really_longopts ATTRIBUTE_UNUSED)
 138 {
 139   static const struct option xtra_long[] =
 140   {
 141     {"identification", required_argument, NULL, OPTION_IDENTIFICATION},
 142     {NULL, no_argument, NULL, 0}
 143   };
 144
 145   *longopts
 146     = xrealloc (*longopts, nl * sizeof (struct option) + sizeof (xtra_long));
 147   memcpy (*longopts + nl, &xtra_long, sizeof (xtra_long));
 148 }
 149
 150 static void
 151 gld${EMULATION_NAME}_list_options (FILE *file)
 152 {
 153   fprintf (file, _("  --identification <string>          Set the identification of the output\n"));
 154 }
 155
 156 static bool
 157 gld${EMULATION_NAME}_handle_option (int optc)
 158 {
 159   switch (optc)
 160     {
 161     default:
 162       return false;
 163
 164     case OPTION_IDENTIFICATION:
 165       /* Currently ignored.  */
 166       break;
 167     }
 168
 169   return true;
 170 }
 171
 172 EOF
 173
 174 if test "$OUTPUT_FORMAT" = "elf64-ia64-vms"; then
 175
 176 fragment <<EOF
 177 #include "elf-bfd.h"
 178 #include "ldelfgen.h"
 179 EOF
 180
 181 source_em ${srcdir}/emultempl/elf-generic.em
 182
 183 fragment <<EOF
 184
 185 /* This is called after the sections have been attached to output
 186    sections, but before any sizes or addresses have been set.  */
 187
 188 static void
 189 gld${EMULATION_NAME}_before_allocation (void)
 190 {
 191   const struct elf_backend_data *bed;
 192
 193   if (!is_elf_hash_table (link_info.hash))
 194     return;
 195
 196   bed = get_elf_backend_data (link_info.output_bfd);
 197
 198   /* The backend must work out the sizes of all the other dynamic
 199      sections.  */
 200   if (bed->elf_backend_late_size_sections
 201       && !bed->elf_backend_late_size_sections (link_info.output_bfd,
 202                                                &link_info))
 203     einfo (_("%F%P: failed to set dynamic section sizes: %E\n"));
 204
 205   before_allocation_default ();
 206 }
 207
 208 static void
 209 gld${EMULATION_NAME}_after_allocation (void)
 210 {
 211   int need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
 212
 213   if (need_layout < 0)
 214     einfo (_("%X%P: .eh_frame/.stab edit: %E\n"));
 215   else
 216     ldelf_map_segments (need_layout);
 217 }
 218
 219 static void
 220 gld${EMULATION_NAME}_after_parse (void)
 221 {
 222   link_info.relax_pass = 2;
 223   after_parse_default ();
 224 }
 225 EOF
 226
 227 LDEMUL_BEFORE_ALLOCATION=gld"$EMULATION_NAME"_before_allocation
 228 LDEMUL_AFTER_ALLOCATION=gld"$EMULATION_NAME"_after_allocation
 229
 230 LDEMUL_AFTER_PARSE=gld${EMULATION_NAME}_after_parse
 231 source_em ${srcdir}/emultempl/needrelax.em
 232 fi
 233
 234 LDEMUL_PLACE_ORPHAN=vms_place_orphan
 235 LDEMUL_BEFORE_PARSE=gld"$EMULATION_NAME"_before_parse
 236 LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=gld"$EMULATION_NAME"_create_output_section_statements
 237 LDEMUL_FIND_POTENTIAL_LIBRARIES=gld"$EMULATION_NAME"_find_potential_libraries
 238 LDEMUL_OPEN_DYNAMIC_ARCHIVE=gld"$EMULATION_NAME"_open_dynamic_archive
 239 LDEMUL_ADD_OPTIONS=gld"$EMULATION_NAME"_add_options
 240 LDEMUL_HANDLE_OPTION=gld"$EMULATION_NAME"_handle_option
 241 LDEMUL_LIST_OPTIONS=gld"$EMULATION_NAME"_list_options