1/* PowerPC-specific support for 64-bit ELF.
2   Copyright (C) 2003-2022 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
21enum ppc_elf_plt_type
22{
23  PLT_UNSET,
24  PLT_OLD,
25  PLT_NEW,
26  PLT_VXWORKS
27};
28
29/* Various options passed from the linker to bfd backend.  */
30struct ppc_elf_params
31{
32  /* Chooses the type of .plt.  */
33  enum ppc_elf_plt_type plt_style;
34
35  /* Set if individual PLT call stubs should be aligned.  */
36  int plt_stub_align;
37
38  /* Whether to emit symbols for stubs.  */
39  int emit_stub_syms;
40
41  /* Whether to emit special stub for __tls_get_addr calls.  */
42  int no_tls_get_addr_opt;
43
44  /* Insert trampolines for branches that won't reach their destination.  */
45  int branch_trampolines;
46
47  /* Avoid execution falling into new page.  */
48  int ppc476_workaround;
49  unsigned int pagesize_p2;
50
51  /* The bfd backend detected a non-PIC reference to a protected symbol
52     defined in a shared library.  */
53  int pic_fixup;
54
55  /* Relocate 16A relocs as 16D and vice versa.  */
56  int vle_reloc_fixup;
57
58  bfd_vma pagesize;
59};
60
61void ppc_elf_link_params (struct bfd_link_info *, struct ppc_elf_params *);
62int ppc_elf_select_plt_layout (bfd *, struct bfd_link_info *);
63bool ppc_elf_inline_plt (struct bfd_link_info *);
64asection *ppc_elf_tls_setup (bfd *, struct bfd_link_info *);
65bool ppc_elf_tls_optimize (bfd *, struct bfd_link_info *);
66void ppc_elf_maybe_strip_sdata_syms (struct bfd_link_info *);
67extern bool ppc_elf_modify_segment_map (bfd *, struct bfd_link_info *);
68extern bool ppc_elf_section_processing (bfd *, Elf_Internal_Shdr *);
69extern bool ppc_finish_symbols (struct bfd_link_info *);
70