| # This shell script emits a C file. -*- C -*- |
| # Copyright (C) 2004-2019 Free Software Foundation, Inc. |
| # |
| # 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; if not, write to the Free Software |
| # Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| # MA 02110-1301, USA. |
| |
| fragment <<EOF |
| |
| #include "ldmain.h" |
| #include "ldctor.h" |
| #include "elf/riscv.h" |
| #include "elfxx-riscv.h" |
| |
| static void |
| riscv_elf_before_allocation (void) |
| { |
| gld${EMULATION_NAME}_before_allocation (); |
| |
| if (link_info.discard == discard_sec_merge) |
| link_info.discard = discard_l; |
| |
| if (!bfd_link_relocatable (&link_info)) |
| { |
| /* We always need at least some relaxation to handle code alignment. */ |
| if (RELAXATION_DISABLED_BY_USER) |
| TARGET_ENABLE_RELAXATION; |
| else |
| ENABLE_RELAXATION; |
| } |
| |
| link_info.relax_pass = 3; |
| } |
| |
| static void |
| gld${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; |
| } |
| } |
| |
| gld${EMULATION_NAME}_map_segments (need_layout); |
| } |
| |
| /* This is a convenient point to tell BFD about target specific flags. |
| After the output has been created, but before inputs are read. */ |
| |
| static void |
| riscv_create_output_section_statements (void) |
| { |
| /* See PR 22920 for an example of why this is necessary. */ |
| if (strstr (bfd_get_target (link_info.output_bfd), "riscv") == NULL) |
| { |
| /* The RISC-V backend needs special fields in the output hash structure. |
| These will only be created if the output format is a RISC-V format, |
| hence we do not support linking and changing output formats at the |
| same time. Use a link followed by objcopy to change output formats. */ |
| einfo (_("%F%P: error: cannot change output format" |
| " whilst linking %s binaries\n"), "RISC-V"); |
| return; |
| } |
| } |
| |
| EOF |
| |
| LDEMUL_BEFORE_ALLOCATION=riscv_elf_before_allocation |
| LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation |
| LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=riscv_create_output_section_statements |