OpenCores
URL https://opencores.org/ocsvn/open8_urisc/open8_urisc/trunk

Subversion Repositories open8_urisc

[/] [open8_urisc/] [trunk/] [gnu/] [binutils/] [ld/] [emultempl/] [solaris2.em] - Blame information for rev 268

Go to most recent revision | Details | Compare with Previous | View Log

Line No. Rev Author Line
1 145 khays
# This shell script emits a C file. -*- C -*-
2
# It does some substitutions.
3
if [ -z "$MACHINE" ]; then
4
  OUTPUT_ARCH=${ARCH}
5
else
6
  OUTPUT_ARCH=${ARCH}:${MACHINE}
7
fi
8
fragment <
9
/* This file is generated by a shell script.  DO NOT EDIT! */
10
 
11
/* Solaris 2 emulation code for ${EMULATION_NAME}
12
   Copyright 2010 Free Software Foundation, Inc.
13
   Written by Rainer Orth 
14
 
15
   This file is part of the GNU Binutils.
16
 
17
   This program is free software; you can redistribute it and/or modify
18
   it under the terms of the GNU General Public License as published by
19
   the Free Software Foundation; either version 3 of the License, or
20
   (at your option) any later version.
21
 
22
   This program is distributed in the hope that it will be useful,
23
   but WITHOUT ANY WARRANTY; without even the implied warranty of
24
   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
25
   GNU General Public License for more details.
26
 
27
   You should have received a copy of the GNU General Public License
28
   along with this program; if not, write to the Free Software
29
   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
30
   MA 02110-1301, USA.  */
31
 
32
#define TARGET_IS_${EMULATION_NAME}
33
 
34
/* The Solaris 2 ABI requires some global symbols to be present in the
35
   .dynsym table of executables and shared objects.  If generating a
36
   versioned shared object, they must always be bound to the base version.
37
 
38
   Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
39
   File, p.63.  */
40
static void
41
elf_solaris2_before_allocation (void)
42
{
43
  /* Global symbols required by the Solaris 2 ABI.  */
44
  static const char *global_syms[] = {
45
    "_DYNAMIC",
46
    "_GLOBAL_OFFSET_TABLE_",
47
    "_PROCEDURE_LINKAGE_TABLE_",
48
    "_edata",
49
    "_end",
50
    "_etext",
51
    NULL
52
  };
53
  const char **sym;
54
 
55
  /* Do this for both executables and shared objects.  */
56
  if (!link_info.relocatable)
57
    {
58
      for (sym = global_syms; *sym != NULL; sym++)
59
        {
60
          struct elf_link_hash_entry *h;
61
 
62
          /* Lookup symbol.  */
63
          h = elf_link_hash_lookup (elf_hash_table (&link_info), *sym,
64
                                    FALSE, FALSE, FALSE);
65
          if (h == NULL)
66
            continue;
67
 
68
          /* Undo the hiding done by _bfd_elf_define_linkage_sym.  */
69
          h->forced_local = 0;
70
          h->other &= ~STV_HIDDEN;
71
 
72
          /* Emit it into the .dynamic section, too.  */
73
          bfd_elf_link_record_dynamic_symbol (&link_info, h);
74
        }
75
    }
76
 
77
  /* Only do this if emitting a shared object and versioning is in place. */
78
  if (link_info.shared
79 163 khays
      && (link_info.version_info != NULL
80
          || link_info.create_default_symver))
81 145 khays
    {
82
      struct bfd_elf_version_expr *globals = NULL, *locals = NULL;
83
      struct bfd_elf_version_tree *basever;
84
      const char *soname;
85
 
86
      for (sym = global_syms; *sym != NULL; sym++)
87
        {
88
          /* Create a version pattern for this symbol.  Some of them start
89
             off as local, others as global, so try both.  */
90
          globals = lang_new_vers_pattern (globals, *sym, NULL, TRUE);
91
          locals = lang_new_vers_pattern (locals, *sym, NULL, TRUE);
92
        }
93
 
94
      /* New version node for those symbols.  */
95
      basever = lang_new_vers_node (globals, locals);
96
 
97
      /* The version name matches what bfd_elf_size_dynamic_sections uses
98
         for the base version.  */
99
      soname = bfd_elf_get_dt_soname (link_info.output_bfd);
100
      if (soname == NULL)
101
        soname = lbasename (bfd_get_filename (link_info.output_bfd));
102
 
103
      /* Register the node.  */
104
      lang_register_vers_node (soname, basever, NULL);
105
      /* Enforce base version.  The encoded vd_ndx is vernum + 1.  */
106
      basever->vernum = 0;
107
    }
108
 
109
  gld${EMULATION_NAME}_before_allocation ();
110
}
111
 
112
/* The Solaris 2 ABI requires two local symbols to be emitted for every
113
   executable and shared object.
114
 
115
   Cf. Linker and Libraries Guide, Ch. 2, Link-Editor, Generating the Output
116
   File, p.63.  */
117
static void
118
elf_solaris2_after_allocation (void)
119
{
120
  /* Local symbols required by the Solaris 2 ABI.  Already emitted by
121
     emulparams/solaris2.sh.  */
122
  static const char *local_syms[] = {
123
    "_START_",
124
    "_END_",
125
    NULL
126
  };
127
  const char **sym;
128
 
129
  /* Do this for both executables and shared objects.  */
130
  if (!link_info.relocatable)
131
    {
132
      for (sym = local_syms; *sym != NULL; sym++)
133
        {
134
          struct elf_link_hash_entry *h;
135
 
136
          /* Lookup symbol.  */
137
          h = elf_link_hash_lookup (elf_hash_table (&link_info), *sym,
138
                                    FALSE, FALSE, FALSE);
139
          if (h == NULL)
140
            continue;
141
 
142
          /* Turn it local.  */
143
          h->forced_local = 1;
144
          /* Type should be STT_OBJECT, not STT_NOTYPE.  */
145
          h->type = STT_OBJECT;
146
        }
147
    }
148
 
149
  gld${EMULATION_NAME}_after_allocation ();
150
}
151
 
152
EOF
153
 
154
LDEMUL_BEFORE_ALLOCATION=elf_solaris2_before_allocation
155
LDEMUL_AFTER_ALLOCATION=elf_solaris2_after_allocation

powered by: WebSVN 2.1.0

© copyright 1999-2024 OpenCores.org, equivalent to Oliscience, all rights reserved. OpenCores®, registered trademark.