1 /* Freescale XGATE-specific support for 32-bit ELF 2 Copyright (C) 2012-2014 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 */ 144