| Rahul Chaudhry | 36b7a6f | 2017-03-15 16:56:48 -0700 | [diff] [blame] | 1 | /* PowerPC64-specific support for 64-bit ELF. |
| 2 | Copyright (C) 2002-2016 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 | /* Whether to canonicalize .opd so that there are no overlapping |
| 52 | .opd entries. */ |
| 53 | int non_overlapping_opd; |
| 54 | |
| 55 | /* Whether to emit symbols for stubs. */ |
| 56 | int emit_stub_syms; |
| 57 | |
| 58 | /* Whether to generate out-of-line register save/restore for gcc -Os code. */ |
| 59 | int save_restore_funcs; |
| 60 | |
| 61 | /* Set when a potential variable is detected in .toc. */ |
| 62 | int object_in_toc; |
| 63 | }; |
| 64 | |
| 65 | bfd_boolean ppc64_elf_init_stub_bfd |
| 66 | (struct bfd_link_info *, struct ppc64_elf_params *); |
| 67 | bfd_boolean ppc64_elf_edit_opd |
| 68 | (struct bfd_link_info *); |
| 69 | asection *ppc64_elf_tls_setup |
| 70 | (struct bfd_link_info *); |
| 71 | bfd_boolean ppc64_elf_tls_optimize |
| 72 | (struct bfd_link_info *); |
| 73 | bfd_boolean ppc64_elf_edit_toc |
| 74 | (struct bfd_link_info *); |
| 75 | bfd_boolean ppc64_elf_has_small_toc_reloc |
| 76 | (asection *); |
| 77 | bfd_vma ppc64_elf_set_toc |
| 78 | (struct bfd_link_info *, bfd *); |
| 79 | int ppc64_elf_setup_section_lists |
| 80 | (struct bfd_link_info *); |
| 81 | void ppc64_elf_start_multitoc_partition |
| 82 | (struct bfd_link_info *); |
| 83 | bfd_boolean ppc64_elf_next_toc_section |
| 84 | (struct bfd_link_info *, asection *); |
| 85 | bfd_boolean ppc64_elf_layout_multitoc |
| 86 | (struct bfd_link_info *); |
| 87 | void ppc64_elf_finish_multitoc_partition |
| 88 | (struct bfd_link_info *); |
| 89 | bfd_boolean ppc64_elf_check_init_fini |
| 90 | (struct bfd_link_info *); |
| 91 | bfd_boolean ppc64_elf_next_input_section |
| 92 | (struct bfd_link_info *, asection *); |
| 93 | bfd_boolean ppc64_elf_size_stubs |
| 94 | (struct bfd_link_info *); |
| 95 | bfd_boolean ppc64_elf_build_stubs |
| 96 | (struct bfd_link_info *, char **); |
| 97 | void ppc64_elf_restore_symbols |
| 98 | (struct bfd_link_info *info); |