1/* Freescale XGATE-specific support for 32-bit ELF
2   Copyright (C) 2012-2017 Free Software Foundation, Inc.
3
4   Contributed by Sean Keys (skeys@ipdatasys.com)
5   (Heavily copied from the HC11 port by Stephane Carrez (stcarrez@nerim.fr))
6
7   This file is part of BFD, the Binary File Descriptor library.
8
9   This program is free software; you can redistribute it and/or modify
10   it under the terms of the GNU General Public License as published by
11   the Free Software Foundation; either version 3 of the License, or
12   (at your option) any later version.
13
14   This program is distributed in the hope that it will be useful,
15   but WITHOUT ANY WARRANTY; without even the implied warranty of
16   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17   GNU General Public License for more details.
18
19   You should have received a copy of the GNU General Public License
20   along with this program; if not, write to the Free Software
21   Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
22   MA 02110-1301, USA.  */
23
24#ifndef _ELF32_XGATE_H
25#define _ELF32_XGATE_H
26
27#include "elf-bfd.h"
28#include "bfdlink.h"
29#include "elf/xgate.h"
30
31/* Set and control ELF flags in ELF header.  */
32extern bfd_boolean _bfd_xgate_elf_set_private_flags (bfd*,flagword);
33extern bfd_boolean _bfd_xgate_elf_print_private_bfd_data (bfd*, void*);
34
35struct elf32_xgate_stub_hash_entry
36{
37  /* Base hash table entry structure.  */
38  struct bfd_hash_entry root;
39
40  /* The stub section.  */
41  asection *stub_sec;
42
43  /* Offset within stub_sec of the beginning of this stub.  */
44  bfd_vma stub_offset;
45
46  /* Given the symbol's value and its section we can determine its final
47     value when building the stubs (so the stub knows where to jump.  */
48  bfd_vma target_value;
49  asection *target_section;
50};
51
52struct xgate_page_info
53{
54  bfd_vma bank_virtual;
55  bfd_vma bank_physical;
56  bfd_vma bank_physical_end;
57  bfd_vma bank_mask;
58  bfd_vma bank_size;
59  int bank_shift;
60  int bank_param_initialized;
61  bfd_vma trampoline_addr;
62};
63
64struct xgate_elf_link_hash_table
65{
66  struct elf_link_hash_table root;
67  struct xgate_page_info pinfo;
68
69  /* The stub hash table.  */
70  struct bfd_hash_table* stub_hash_table;
71
72  /* Linker stub bfd.  */
73  bfd *stub_bfd;
74
75  asection* stub_section;
76  asection* tramp_section;
77
78  /* Linker call-backs.  */
79  asection * (*add_stub_section) (const char *, asection *);
80
81  /* Assorted information used by elf32_hppa_size_stubs.  */
82  unsigned int bfd_count;
83  int          top_index;
84  asection **  input_list;
85
86  /* Small local sym cache.  */
87  struct sym_cache sym_cache;
88
89  bfd_boolean (*size_one_stub) (struct bfd_hash_entry*, void*);
90  bfd_boolean (*build_one_stub) (struct bfd_hash_entry*, void*);
91};
92
93/* Get the XGate ELF linker hash table from a link_info structure.  */
94
95#define xgate_elf_hash_table(p) \
96  ((struct xgate_elf_link_hash_table *) ((p)->hash))
97
98/* Create a XGATE ELF linker hash table.  */
99
100extern struct xgate_elf_link_hash_table* xgate_elf_hash_table_create
101  (bfd *);
102
103extern void xgate_elf_get_bank_parameters (struct bfd_link_info *);
104
105/* Return 1 if the address is in banked memory.
106   This can be applied to a virtual address and to a physical address.  */
107extern int xgate_addr_is_banked (struct xgate_page_info *, bfd_vma);
108
109/* Return the physical address seen by the processor, taking
110   into account banked memory.  */
111extern bfd_vma xgate_phys_addr (struct xgate_page_info *, bfd_vma);
112
113/* Return the page number corresponding to an address in banked memory.  */
114extern bfd_vma xgate_phys_page (struct xgate_page_info *, bfd_vma);
115
116bfd_reloc_status_type xgate_elf_ignore_reloc
117  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
118bfd_reloc_status_type xgate_elf_special_reloc
119  (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
120
121bfd_boolean elf32_xgate_check_relocs
122  (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
123bfd_boolean elf32_xgate_relocate_section
124  (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
125   Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
126
127bfd_boolean elf32_xgate_add_symbol_hook
128  (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **,
129   flagword *, asection **, bfd_vma *);
130
131/* Tweak the OSABI field of the elf header.  */
132extern void elf32_xgate_post_process_headers (bfd *, struct bfd_link_info *);
133
134int elf32_xgate_setup_section_lists (bfd *, struct bfd_link_info *);
135
136bfd_boolean elf32_xgate_size_stubs
137  (bfd *, bfd *, struct bfd_link_info *,
138   asection * (*) (const char *, asection *));
139
140bfd_boolean elf32_xgate_build_stubs (bfd * abfd, struct bfd_link_info *);
141
142#endif /* _ELF32_XGATE_H */
143