1# This shell script emits a C file. -*- C -*- 2# Copyright (C) 2004-2020 Free Software Foundation, Inc. 3# 4# This file is part of the GNU Binutils. 5# 6# This program is free software; you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation; either version 3 of the License, or 9# (at your option) any later version. 10# 11# This program is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15# 16# You should have received a copy of the GNU General Public License 17# along with this program; if not, write to the Free Software 18# Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, 19# MA 02110-1301, USA. 20 21fragment <<EOF 22 23#include "ldmain.h" 24#include "ldctor.h" 25#include "elf/riscv.h" 26#include "elfxx-riscv.h" 27 28static void 29riscv_elf_before_allocation (void) 30{ 31 gld${EMULATION_NAME}_before_allocation (); 32 33 if (link_info.discard == discard_sec_merge) 34 link_info.discard = discard_l; 35 36 if (!bfd_link_relocatable (&link_info)) 37 { 38 /* We always need at least some relaxation to handle code alignment. */ 39 if (RELAXATION_DISABLED_BY_USER) 40 TARGET_ENABLE_RELAXATION; 41 else 42 ENABLE_RELAXATION; 43 } 44 45 link_info.relax_pass = 3; 46} 47 48static void 49gld${EMULATION_NAME}_after_allocation (void) 50{ 51 int need_layout = 0; 52 53 /* Don't attempt to discard unused .eh_frame sections until the final link, 54 as we can't reliably tell if they're used until after relaxation. */ 55 if (!bfd_link_relocatable (&link_info)) 56 { 57 need_layout = bfd_elf_discard_info (link_info.output_bfd, &link_info); 58 if (need_layout < 0) 59 { 60 einfo (_("%X%P: .eh_frame/.stab edit: %E\n")); 61 return; 62 } 63 } 64 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 71static void 72riscv_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), "riscv") == NULL) 76 { 77 /* The RISC-V backend needs special fields in the output hash structure. 78 These will only be created if the output format is a RISC-V format, 79 hence we do not support linking and changing output formats at the 80 same time. Use a link followed by objcopy to change output formats. */ 81 einfo (_("%F%P: error: cannot change output format" 82 " whilst linking %s binaries\n"), "RISC-V"); 83 return; 84 } 85} 86 87EOF 88 89LDEMUL_BEFORE_ALLOCATION=riscv_elf_before_allocation 90LDEMUL_AFTER_ALLOCATION=gld${EMULATION_NAME}_after_allocation 91LDEMUL_CREATE_OUTPUT_SECTION_STATEMENTS=riscv_create_output_section_statements 92