| # This shell script emits a C file. -*- C -*- |
| # Copyright (C) 2021-2024 Free Software Foundation, Inc. |
| # Contributed by Loongson Ltd. |
| # |
| # This file is part of the GNU Binutils. |
| # |
| # 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. |
| # |
| # 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 this program; see the file COPYING3. If not, |
| # see <http://www.gnu.org/licenses/>. |
| |
| fragment <<EOF |
| |
| #include "ldmain.h" |
| #include "ldctor.h" |
| #include "elf/loongarch.h" |
| #include "elfxx-loongarch.h" |
| |
| static void |
| larch_elf_before_allocation (void) |
| { |
| gld${EMULATION_NAME}_before_allocation (); |
| |
| if (link_info.discard == discard_sec_merge) |
| link_info.discard = discard_l; |
| |
| if (!bfd_link_relocatable (&link_info)) |
| { |
| /* We always need at least some relaxation to handle code alignment. */ |
| if (RELAXATION_DISABLED_BY_USER) |
| TARGET_ENABLE_RELAXATION; |
| else |
| ENABLE_RELAXATION; |
| } |
| |
| link_info.relax_pass = 2; |
| } |
| |
| static void |
| gld${EMULATION_NAME}_after_allocation (void) |
| { |
| int need_layout = 0; |
| |
| /* Don't attempt to discard unused .eh_frame sections until the final link, |
| as we can't reliably tell if they're used until after relaxation. */ |
| if (!bfd_link_relocatable (&link_info)) |
| { |
| need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info); |
| if (need_layout < 0) |
| { |
| einfo (_("%X%P: .eh_frame/.stab edit: %E\n")); |
| return; |
| } |
| } |
| |
| /* The program header size of executable file may increase. */ |
| if (bfd_get_flavour (link_info.output_bfd) == bfd_target_elf_flavour |
| && !bfd_link_relocatable (&link_info)) |
| { |
| if (lang_phdr_list == NULL) |
| elf_seg_map (link_info.output_bfd) = NULL; |
| if (!_bfd_elf_map_sections_to_segments (link_info.output_bfd, |
| &link_info, |
| NULL)) |
| einfo (_("%F%P: map sections to segments failed: %E\n")); |
| } |
| |
| /* Adjust program header size and .eh_frame_hdr size before |
| lang_relax_sections. Without it, the vma of data segment may increase. */ |
| lang_do_assignments (lang_allocating_phase_enum); |
| lang_reset_memory_regions (); |
| lang_size_sections (NULL, true); |
| |
| enum phase_enum *phase = &(expld.dataseg.phase); |
| bfd_elf${ELFSIZE}_loongarch_set_data_segment_info (&link_info, (int *) phase); |
| /* gld${EMULATION_NAME}_map_segments (need_layout); */ |
| ldelf_map_segments (need_layout); |
| } |
| |
| /* This is a convenient point to tell BFD about target specific flags. |
| After the output has been created, but before inputs are read. */ |
| |
| static void |
| larch_create_output_section_statements (void) |
| { |
| /* See PR 22920 for an example of why this is necessary. */ |
| if (strstr (bfd_get_target (link_info.output_bfd), "loong") == NULL) |
| { |
| einfo (_("%F%P: error: cannot change output format" |
| " whilst linking %s binaries\n"), "LoongArch"); |
| return; |
| } |
| } |
| |
| EOF |
| |
| LDEMUL_BEFORE_ALLOCATION=larch_elf_before_allocation |
| LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
| LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=larch_create_output_section_statements |