ld/emultempl/vms.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright 2010
   3 #   Free Software Foundation, Inc.
   4 #
   5 # This file is part of the GNU Binutils.
   6 #
   7 # This program is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11 #
  12 # This program is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16 #
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program; if not, write to the Free Software
  19 # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
  20 # MA 02110-1301, USA.
  21 #
  22
  23 # This file is sourced from generic.em.
  24
  25 fragment <<EOF
  26 static void
  27 gld${EMULATION_NAME}_before_parse (void)
  28 {
  29   ldfile_set_output_arch ("${ARCH}", bfd_arch_`echo ${ARCH} | sed -e 's/:.*//'`);
  30   config.dynamic_link = TRUE;
  31   config.has_shared = FALSE; /* Not yet.  */
  32 }
  33
  34 /* This is called before the input files are opened.  We add the
  35    standard library.  */
  36
  37 static void
  38 gld${EMULATION_NAME}_create_output_section_statements (void)
  39 {
  40   lang_add_input_file ("imagelib", lang_input_file_is_l_enum, NULL);
  41   lang_add_input_file ("starlet", lang_input_file_is_l_enum, NULL);
  42   lang_add_input_file ("sys\$public_vectors", lang_input_file_is_l_enum, NULL);
  43 }
  44
  45 /* Try to open a dynamic archive.  This is where we know that VMS
  46    shared images (dynamic libraries) have an extension of .exe.  */
  47
  48 static bfd_boolean
  49 gld${EMULATION_NAME}_open_dynamic_archive (const char *arch ATTRIBUTE_UNUSED,
  50                                            search_dirs_type *search,
  51                                            lang_input_statement_type *entry)
  52 {
  53   char *string;
  54
  55   if (! entry->is_archive)
  56     return FALSE;
  57
  58   string = (char *) xmalloc (strlen (search->name)
  59                              + strlen (entry->filename)
  60                              + sizeof "/.exe");
  61
  62   sprintf (string, "%s/%s.exe", search->name, entry->filename);
  63
  64   if (! ldfile_try_open_bfd (string, entry))
  65     {
  66       free (string);
  67       return FALSE;
  68     }
  69
  70   entry->filename = string;
  71
  72   return TRUE;
  73 }
  74
  75 static int
  76 gld${EMULATION_NAME}_find_potential_libraries
  77   (char *name, lang_input_statement_type *entry)
  78 {
  79   return ldfile_open_file_search (name, entry, "", ".olb");
  80 }
  81
  82 /* Place an orphan section.  We use this to put random OVR sections.
  83    Much borrowed from elf32.em.  */
  84
  85 static lang_output_section_statement_type *
  86 vms_place_orphan (asection *s,
  87                   const char *secname ATTRIBUTE_UNUSED,
  88                   int constraint ATTRIBUTE_UNUSED)
  89 {
  90   static struct orphan_save hold_data =
  91     {
  92       "\$DATA\$",
  93       SEC_HAS_CONTENTS | SEC_ALLOC | SEC_LOAD | SEC_DATA,
  94       0, 0, 0, 0
  95     };
  96
  97   /* We have nothing to say for anything other than a final link or an excluded
  98      section.  */
  99   if (link_info.relocatable
 100       || (s->flags & (SEC_EXCLUDE | SEC_LOAD)) != SEC_LOAD)
 101     return NULL;
 102
 103   /* FIXME: we should place sections by VMS program section flags.  */
 104
 105   /* Only handle data sections.  */
 106   if ((s->flags & SEC_DATA) == 0)
 107     return NULL;
 108
 109   if (hold_data.os == NULL)
 110     hold_data.os = lang_output_section_find (hold_data.name);
 111
 112   if (hold_data.os != NULL)
 113     {
 114       lang_add_section (&hold_data.os->children, s, hold_data.os);
 115       return hold_data.os;
 116     }
 117   else
 118     return NULL;
 119 }
 120 EOF
 121
 122 LDEMUL_PLACE_ORPHAN=vms_place_orphan
 123 LDEMUL_BEFORE_PARSE=gld"$EMULATION_NAME"_before_parse
 124 LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=gld"$EMULATION_NAME"_create_output_section_statements
 125 LDEMUL_FIND_POTENTIAL_LIBRARIES=gld"$EMULATION_NAME"_find_potential_libraries
 126 LDEMUL_OPEN_DYNAMIC_ARCHIVE=gld"$EMULATION_NAME"_open_dynamic_archive