bfd/libxcoff.h

   1 /* BFD XCOFF object file private structure.
   2    Copyright (C) 2001 Free Software Foundation, Inc.
   3    Written by Tom Rix, Redhat.
   4
   5 This file is part of BFD, the Binary File Descriptor library.
   6
   7 This program is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2 of the License, or
  10 (at your option) any later version.
  11
  12 This program is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with this program; if not, write to the Free Software
  19 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
  20
  21 #ifndef LIBXCOFF_H
  22 #define LIBXCOFF_H
  23
  24 /* This is the backend information kept for XCOFF files.  This
  25    structure is constant for a particular backend.  The first element
  26    is the COFF backend data structure, so that XCOFF targets can use
  27    the generic COFF code.  */
  28
  29 struct xcoff_backend_data_rec
  30 {
  31   /* COFF backend information.  */
  32   bfd_coff_backend_data coff;
  33
  34   /* Magic number */
  35   unsigned short _xcoff_magic_number;
  36
  37   /* Architecture and machine for coff_set_arch_mach_hook */
  38   enum bfd_architecture _xcoff_architecture;
  39   long _xcoff_machine;
  40
  41   /* function pointers to xcoff specific swap routines */
  42   void (* _xcoff_swap_ldhdr_in)(bfd *, const PTR, struct internal_ldhdr *);
  43   void (* _xcoff_swap_ldhdr_out)(bfd *, const struct internal_ldhdr *, PTR);
  44   void (* _xcoff_swap_ldsym_in)(bfd *, const PTR, struct internal_ldsym *);
  45   void (* _xcoff_swap_ldsym_out)(bfd *, const struct internal_ldsym *, PTR);
  46   void (* _xcoff_swap_ldrel_in)(bfd *, const PTR, struct internal_ldrel *);
  47   void (* _xcoff_swap_ldrel_out)(bfd *, const struct internal_ldrel *, PTR);
  48
  49   /* size of the external struct */
  50   unsigned int _xcoff_ldhdrsz;
  51   unsigned int _xcoff_ldsymsz;
  52   unsigned int _xcoff_ldrelsz;
  53
  54   /* size an entry in a descriptor section */
  55   unsigned int _xcoff_function_descriptor_size;
  56
  57   /* size of the small aout file header */
  58   unsigned int _xcoff_small_aout_header_size;
  59
  60   /* Loader version
  61      1 : XCOFF32
  62      2 : XCOFF64 */
  63   unsigned long _xcoff_ldhdr_version;
  64
  65   boolean (* _xcoff_put_symbol_name)(bfd *, struct bfd_strtab_hash *,
  66                                      struct internal_syment *,
  67                                      const char *);
  68
  69   boolean (* _xcoff_put_ldsymbol_name)(bfd *, struct xcoff_loader_info *,
  70                                        struct internal_ldsym *,
  71                                        const char *);
  72
  73   reloc_howto_type *_xcoff_dynamic_reloc;
  74
  75   asection * (* _xcoff_create_csect_from_smclas) (bfd *, union internal_auxent *, const char *);
  76
  77   /* Line number and relocation overflow.
  78      XCOFF32 overflows to another section when the line number or the
  79      relocation count exceeds 0xffff.  XCOFF64 does not overflow.  */
  80   boolean (*_xcoff_is_lineno_count_overflow)(bfd *, bfd_vma);
  81   boolean (*_xcoff_is_reloc_count_overflow)(bfd *, bfd_vma);
  82
  83   /* Loader section symbol and relocation table offset
  84      XCOFF32 is after the .loader header
  85      XCOFF64 is offset in .loader header  */
  86   bfd_vma (*_xcoff_loader_symbol_offset)(bfd *, struct internal_ldhdr *);
  87   bfd_vma (*_xcoff_loader_reloc_offset)(bfd *, struct internal_ldhdr *);
  88
  89   /* Global linkage.  The first word of global linkage code must be be
  90      modified by filling in the correct TOC offset.  */
  91   unsigned long *_xcoff_glink_code;
  92
  93   /* Size of the global link code in bytes of the xcoff_glink_code table.  */
  94   unsigned long _xcoff_glink_size;
  95
  96   /* rtinit */
  97   unsigned int _xcoff_rtinit_size;
  98   boolean (*_xcoff_generate_rtinit)(bfd *, const char *, const char *,
  99                                     boolean);
 100 };
 101
 102 /* Look up an entry in an XCOFF link hash table.  */
 103
 104 #define xcoff_link_hash_lookup(table, string, create, copy, follow) \
 105   ((struct xcoff_link_hash_entry *) \
 106    bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\
 107                          (follow)))
 108
 109 /* Traverse an XCOFF link hash table.  */
 110
 111 #define xcoff_link_hash_traverse(table, func, info)                     \
 112   (bfd_link_hash_traverse                                               \
 113    (&(table)->root,                                                     \
 114     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 115     (info)))
 116
 117 /* Get the XCOFF link hash table from the info structure.  This is
 118    just a cast.  */
 119
 120 #define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash))
 121
 122
 123 #define xcoff_backend(abfd) \
 124   ((struct xcoff_backend_data_rec *) (abfd)->xvec->backend_data)
 125
 126 #define bfd_xcoff_magic_number(a) ((xcoff_backend(a)->_xcoff_magic_number))
 127 #define bfd_xcoff_architecture(a) ((xcoff_backend(a)->_xcoff_architecture))
 128 #define bfd_xcoff_machine(a) ((xcoff_backend(a)->_xcoff_machine))
 129
 130 #define bfd_xcoff_swap_ldhdr_in(a, b, c) \
 131   ((xcoff_backend(a)->_xcoff_swap_ldhdr_in) ((a), (b), (c)))
 132
 133 #define bfd_xcoff_swap_ldhdr_out(a, b, c) \
 134   ((xcoff_backend(a)->_xcoff_swap_ldhdr_out) ((a), (b), (c)))
 135
 136 #define bfd_xcoff_swap_ldsym_in(a, b, c) \
 137   ((xcoff_backend(a)->_xcoff_swap_ldsym_in) ((a), (b), (c)))
 138
 139 #define bfd_xcoff_swap_ldsym_out(a, b, c) \
 140   ((xcoff_backend(a)->_xcoff_swap_ldsym_out) ((a), (b), (c)))
 141
 142 #define bfd_xcoff_swap_ldrel_in(a, b, c) \
 143   ((xcoff_backend(a)->_xcoff_swap_ldrel_in) ((a), (b), (c)))
 144
 145 #define bfd_xcoff_swap_ldrel_out(a, b, c) \
 146   ((xcoff_backend(a)->_xcoff_swap_ldrel_out) ((a), (b), (c)))
 147
 148 #define bfd_xcoff_ldhdrsz(a) ((xcoff_backend(a)->_xcoff_ldhdrsz))
 149 #define bfd_xcoff_ldsymsz(a) ((xcoff_backend(a)->_xcoff_ldsymsz))
 150 #define bfd_xcoff_ldrelsz(a) ((xcoff_backend(a)->_xcoff_ldrelsz))
 151 #define bfd_xcoff_function_descriptor_size(a) \
 152   ((xcoff_backend(a)->_xcoff_function_descriptor_size))
 153 #define bfd_xcoff_small_aout_header_size(a) \
 154   ((xcoff_backend(a)->_xcoff_small_aout_header_size))
 155
 156 #define bfd_xcoff_ldhdr_version(a) ((xcoff_backend(a)->_xcoff_ldhdr_version))
 157
 158 #define bfd_xcoff_put_symbol_name(a, b, c, d) \
 159   ((xcoff_backend(a)->_xcoff_put_symbol_name) ((a), (b), (c), (d)))
 160
 161 #define bfd_xcoff_put_ldsymbol_name(a, b, c, d) \
 162   ((xcoff_backend(a)->_xcoff_put_ldsymbol_name) ((a), (b), (c), (d)))
 163
 164 /* Get the XCOFF hash table entries for a BFD.  */
 165 #define obj_xcoff_sym_hashes(bfd) \
 166   ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd))
 167
 168 #define bfd_xcoff_dynamic_reloc_howto(a) \
 169    ((xcoff_backend(a)->_xcoff_dynamic_reloc))
 170
 171 #define bfd_xcoff_create_csect_from_smclas(a, b, c) \
 172    ((xcoff_backend(a)->_xcoff_create_csect_from_smclas((a), (b), (c))))
 173
 174 #define bfd_xcoff_is_lineno_count_overflow(a, b) \
 175    ((xcoff_backend(a)->_xcoff_is_lineno_count_overflow((a), (b))))
 176
 177 #define bfd_xcoff_is_reloc_count_overflow(a, b) \
 178    ((xcoff_backend(a)->_xcoff_is_reloc_count_overflow((a), (b))))
 179
 180 #define bfd_xcoff_loader_symbol_offset(a, b) \
 181  ((xcoff_backend(a)->_xcoff_loader_symbol_offset((a), (b))))
 182
 183 #define bfd_xcoff_loader_reloc_offset(a, b) \
 184  ((xcoff_backend(a)->_xcoff_loader_reloc_offset((a), (b))))
 185
 186 #define bfd_xcoff_glink_code(a, b) ((xcoff_backend(a)->_xcoff_glink_code[(b)]))
 187 #define bfd_xcoff_glink_code_size(a) ((xcoff_backend(a)->_xcoff_glink_size))
 188
 189 /* Check for the magic number U803XTOCMAGIC for 64 bit targets.  */
 190 #define bfd_xcoff_is_xcoff64(a) (0x01EF == (bfd_xcoff_magic_number(a)))
 191
 192 /* Check for the magic number U802TOMAGIC for 32 bit targets.  */
 193 #define bfd_xcoff_is_xcoff32(a) (0x01DF == (bfd_xcoff_magic_number(a)))
 194
 195 #define bfd_xcoff_rtinit_size(a) ((xcoff_backend(a)->_xcoff_rtinit_size))
 196 #define bfd_xcoff_generate_rtinit(a, b, c, d) ((xcoff_backend(a)->_xcoff_generate_rtinit ((a), (b), (c), (d))))
 197
 198 #endif /* LIBXCOFF_H */