| 1 | /* Freescale XGATE-specific support for 32-bit ELF |
| 2 | Copyright (C) 2012-2016 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. */ |
| 32 | extern bfd_boolean _bfd_xgate_elf_merge_private_bfd_data (bfd*,bfd*); |
| 33 | extern bfd_boolean _bfd_xgate_elf_set_private_flags (bfd*,flagword); |
| 34 | extern bfd_boolean _bfd_xgate_elf_print_private_bfd_data (bfd*, void*); |
| 35 | |
| 36 | struct elf32_xgate_stub_hash_entry |
| 37 | { |
| 38 | /* Base hash table entry structure. */ |
| 39 | struct bfd_hash_entry root; |
| 40 | |
| 41 | /* The stub section. */ |
| 42 | asection *stub_sec; |
| 43 | |
| 44 | /* Offset within stub_sec of the beginning of this stub. */ |
| 45 | bfd_vma stub_offset; |
| 46 | |
| 47 | /* Given the symbol's value and its section we can determine its final |
| 48 | value when building the stubs (so the stub knows where to jump. */ |
| 49 | bfd_vma target_value; |
| 50 | asection *target_section; |
| 51 | }; |
| 52 | |
| 53 | struct xgate_page_info |
| 54 | { |
| 55 | bfd_vma bank_virtual; |
| 56 | bfd_vma bank_physical; |
| 57 | bfd_vma bank_physical_end; |
| 58 | bfd_vma bank_mask; |
| 59 | bfd_vma bank_size; |
| 60 | int bank_shift; |
| 61 | int bank_param_initialized; |
| 62 | bfd_vma trampoline_addr; |
| 63 | }; |
| 64 | |
| 65 | struct xgate_elf_link_hash_table |
| 66 | { |
| 67 | struct elf_link_hash_table root; |
| 68 | struct xgate_page_info pinfo; |
| 69 | |
| 70 | /* The stub hash table. */ |
| 71 | struct bfd_hash_table* stub_hash_table; |
| 72 | |
| 73 | /* Linker stub bfd. */ |
| 74 | bfd *stub_bfd; |
| 75 | |
| 76 | asection* stub_section; |
| 77 | asection* tramp_section; |
| 78 | |
| 79 | /* Linker call-backs. */ |
| 80 | asection * (*add_stub_section) (const char *, asection *); |
| 81 | |
| 82 | /* Assorted information used by elf32_hppa_size_stubs. */ |
| 83 | unsigned int bfd_count; |
| 84 | int top_index; |
| 85 | asection ** input_list; |
| 86 | |
| 87 | /* Small local sym cache. */ |
| 88 | struct sym_cache sym_cache; |
| 89 | |
| 90 | bfd_boolean (*size_one_stub) (struct bfd_hash_entry*, void*); |
| 91 | bfd_boolean (*build_one_stub) (struct bfd_hash_entry*, void*); |
| 92 | }; |
| 93 | |
| 94 | /* Get the XGate ELF linker hash table from a link_info structure. */ |
| 95 | |
| 96 | #define xgate_elf_hash_table(p) \ |
| 97 | ((struct xgate_elf_link_hash_table *) ((p)->hash)) |
| 98 | |
| 99 | /* Create a XGATE ELF linker hash table. */ |
| 100 | |
| 101 | extern struct xgate_elf_link_hash_table* xgate_elf_hash_table_create |
| 102 | (bfd *); |
| 103 | |
| 104 | extern void xgate_elf_get_bank_parameters (struct bfd_link_info *); |
| 105 | |
| 106 | /* Return 1 if the address is in banked memory. |
| 107 | This can be applied to a virtual address and to a physical address. */ |
| 108 | extern int xgate_addr_is_banked (struct xgate_page_info *, bfd_vma); |
| 109 | |
| 110 | /* Return the physical address seen by the processor, taking |
| 111 | into account banked memory. */ |
| 112 | extern bfd_vma xgate_phys_addr (struct xgate_page_info *, bfd_vma); |
| 113 | |
| 114 | /* Return the page number corresponding to an address in banked memory. */ |
| 115 | extern bfd_vma xgate_phys_page (struct xgate_page_info *, bfd_vma); |
| 116 | |
| 117 | bfd_reloc_status_type xgate_elf_ignore_reloc |
| 118 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 119 | bfd_reloc_status_type xgate_elf_special_reloc |
| 120 | (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **); |
| 121 | |
| 122 | bfd_boolean elf32_xgate_check_relocs |
| 123 | (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *); |
| 124 | bfd_boolean elf32_xgate_relocate_section |
| 125 | (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 126 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **); |
| 127 | |
| 128 | bfd_boolean elf32_xgate_add_symbol_hook |
| 129 | (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **, |
| 130 | flagword *, asection **, bfd_vma *); |
| 131 | |
| 132 | /* Tweak the OSABI field of the elf header. */ |
| 133 | extern void elf32_xgate_post_process_headers (bfd *, struct bfd_link_info *); |
| 134 | |
| 135 | int elf32_xgate_setup_section_lists (bfd *, struct bfd_link_info *); |
| 136 | |
| 137 | bfd_boolean elf32_xgate_size_stubs |
| 138 | (bfd *, bfd *, struct bfd_link_info *, |
| 139 | asection * (*) (const char *, asection *)); |
| 140 | |
| 141 | bfd_boolean elf32_xgate_build_stubs (bfd * abfd, struct bfd_link_info *); |
| 142 | |
| 143 | #endif /* _ELF32_XGATE_H */ |