ld/emultempl/loongarchelf.em

   1 # This shell script emits a C file. -*- C -*-
   2 #   Copyright (C) 2021-2022 Free Software Foundation, Inc.
   3 #   Contributed by Loongson Ltd.
   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; see the file COPYING3. If not,
  19 # see <http://www.gnu.org/licenses/>.
  20
  21 fragment <<EOF
  22
  23 #include "ldmain.h"
  24 #include "ldctor.h"
  25 #include "elf/loongarch.h"
  26
  27 static void
  28 larch_elf_before_allocation (void)
  29 {
  30   gld${EMULATION_NAME}_before_allocation ();
  31
  32   if (link_info.discard == discard_sec_merge)
  33     link_info.discard = discard_l;
  34
  35   if (!bfd_link_relocatable (&link_info))
  36     {
  37       /* We always need at least some relaxation to handle code alignment.  */
  38       if (RELAXATION_DISABLED_BY_USER)
  39         TARGET_ENABLE_RELAXATION;
  40       else
  41         ENABLE_RELAXATION;
  42     }
  43
  44   link_info.relax_pass = 3;
  45 }
  46
  47 static void
  48 gld${EMULATION_NAME}_after_allocation (void)
  49 {
  50   int need_layout = 0;
  51
  52   /* Don't attempt to discard unused .eh_frame sections until the final link,
  53      as we can't reliably tell if they're used until after relaxation.  */
  54   if (!bfd_link_relocatable (&link_info))
  55     {
  56       need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info);
  57       if (need_layout < 0)
  58         {
  59           einfo (_("%X%P: .eh_frame/.stab edit: %E\n"));
  60           return;
  61         }
  62     }
  63
  64   /* gld${EMULATION_NAME}_map_segments (need_layout); */
  65   ldelf_map_segments (need_layout);
  66 }
  67
  68 /* This is a convenient point to tell BFD about target specific flags.
  69    After the output has been created, but before inputs are read.  */
  70
  71 static void
  72 larch_create_output_section_statements (void)
  73 {
  74   /* See PR 22920 for an example of why this is necessary.  */
  75   if (strstr (bfd_get_target (link_info.output_bfd), "loong") == NULL)
  76     {
  77       einfo (_("%F%P: error: cannot change output format"
  78                " whilst linking %s binaries\n"), "LoongArch");
  79       return;
  80     }
  81 }
  82
  83 EOF
  84
  85 LDEMUL_BEFORE_ALLOCATION=larch_elf_before_allocation
  86 LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation
  87 LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=larch_create_output_section_statements