1 /* PowerPC64-specific support for 64-bit ELF. 2 Copyright (C) 2002-2018 Free Software Foundation, Inc. 3 4 This file is part of BFD, the Binary File Descriptor library. 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 21 /* Used to pass info between ld and bfd. */ 22 struct ppc64_elf_params 23 { 24 /* Linker stub bfd. */ 25 bfd *stub_bfd; 26 27 /* Linker call-backs. */ 28 asection * (*add_stub_section) (const char *, asection *); 29 void (*layout_sections_again) (void); 30 31 /* Maximum size of a group of input sections that can be handled by 32 one stub section. A value of +/-1 indicates the bfd back-end 33 should use a suitable default size. */ 34 bfd_signed_vma group_size; 35 36 /* Whether to use a special call stub for __tls_get_addr. */ 37 int tls_get_addr_opt; 38 39 /* Whether to allow multiple toc sections. */ 40 int no_multi_toc; 41 42 /* Set if PLT call stubs should load r11. */ 43 int plt_static_chain; 44 45 /* Set if PLT call stubs need to be thread safe on power7+. */ 46 int plt_thread_safe; 47 48 /* Set if individual PLT call stubs should be aligned. */ 49 int plt_stub_align; 50 51 /* Set if PLT call stubs for localentry:0 functions should omit r2 save. */ 52 int plt_localentry0; 53 54 /* Whether to canonicalize .opd so that there are no overlapping 55 .opd entries. */ 56 int non_overlapping_opd; 57 58 /* Whether to emit symbols for stubs. */ 59 int emit_stub_syms; 60 61 /* Whether to generate out-of-line register save/restore for gcc -Os code. */ 62 int save_restore_funcs; 63 64 /* Set when a potential variable is detected in .toc. */ 65 int object_in_toc; 66 }; 67 68 bfd_boolean ppc64_elf_init_stub_bfd 69 (struct bfd_link_info *, struct ppc64_elf_params *); 70 bfd_boolean ppc64_elf_edit_opd 71 (struct bfd_link_info *); 72 bfd_boolean ppc64_elf_inline_plt 73 (struct bfd_link_info *); 74 asection *ppc64_elf_tls_setup 75 (struct bfd_link_info *); 76 bfd_boolean ppc64_elf_tls_optimize 77 (struct bfd_link_info *); 78 bfd_boolean ppc64_elf_edit_toc 79 (struct bfd_link_info *); 80 bfd_boolean ppc64_elf_has_small_toc_reloc 81 (asection *); 82 bfd_vma ppc64_elf_set_toc 83 (struct bfd_link_info *, bfd *); 84 int ppc64_elf_setup_section_lists 85 (struct bfd_link_info *); 86 void ppc64_elf_start_multitoc_partition 87 (struct bfd_link_info *); 88 bfd_boolean ppc64_elf_next_toc_section 89 (struct bfd_link_info *, asection *); 90 bfd_boolean ppc64_elf_layout_multitoc 91 (struct bfd_link_info *); 92 void ppc64_elf_finish_multitoc_partition 93 (struct bfd_link_info *); 94 bfd_boolean ppc64_elf_check_init_fini 95 (struct bfd_link_info *); 96 bfd_boolean ppc64_elf_next_input_section 97 (struct bfd_link_info *, asection *); 98 bfd_boolean ppc64_elf_size_stubs 99 (struct bfd_link_info *); 100 bfd_boolean ppc64_elf_build_stubs 101 (struct bfd_link_info *, char **); 102