bfd/elf32-xgate.h

   1 /* Freescale XGATE-specific support for 32-bit ELF
   2    Copyright 2012 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 extern void xgate_elf_bfd_link_hash_table_free (struct bfd_link_hash_table *);
 104
 105 extern void xgate_elf_get_bank_parameters (struct bfd_link_info *);
 106
 107 /* Return 1 if the address is in banked memory.
 108    This can be applied to a virtual address and to a physical address.  */
 109 extern int xgate_addr_is_banked (struct xgate_page_info *, bfd_vma);
 110
 111 /* Return the physical address seen by the processor, taking
 112    into account banked memory.  */
 113 extern bfd_vma xgate_phys_addr (struct xgate_page_info *, bfd_vma);
 114
 115 /* Return the page number corresponding to an address in banked memory.  */
 116 extern bfd_vma xgate_phys_page (struct xgate_page_info *, bfd_vma);
 117
 118 bfd_reloc_status_type xgate_elf_ignore_reloc
 119   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 120 bfd_reloc_status_type xgate_elf_special_reloc
 121   (bfd *, arelent *, asymbol *, void *, asection *, bfd *, char **);
 122
 123 bfd_boolean elf32_xgate_check_relocs
 124   (bfd *, struct bfd_link_info *, asection *, const Elf_Internal_Rela *);
 125 bfd_boolean elf32_xgate_relocate_section
 126   (bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
 127    Elf_Internal_Rela *, Elf_Internal_Sym *, asection **);
 128
 129 bfd_boolean elf32_xgate_add_symbol_hook
 130   (bfd *, struct bfd_link_info *, Elf_Internal_Sym *, const char **,
 131    flagword *, asection **, bfd_vma *);
 132
 133 /* Tweak the OSABI field of the elf header.  */
 134 extern void elf32_xgate_post_process_headers (bfd *, struct bfd_link_info *);
 135
 136 int elf32_xgate_setup_section_lists (bfd *, struct bfd_link_info *);
 137
 138 bfd_boolean elf32_xgate_size_stubs
 139   (bfd *, bfd *, struct bfd_link_info *,
 140    asection * (*) (const char *, asection *));
 141
 142 bfd_boolean elf32_xgate_build_stubs (bfd * abfd, struct bfd_link_info *);
 143
 144 #endif /* _ELF32_XGATE_H */