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   /*
  32    * COFF backend information.  Must be the first field.
  33    * This is where the std coff swap table goes
  34    */
  35   bfd_coff_backend_data coff;
  36
  37   /* Magic number */
  38   unsigned short _xcoff_magic_number;
  39
  40   /* Architecture and machine for coff_set_arch_mach_hook */
  41   enum bfd_architecture _xcoff_architecture;
  42   long _xcoff_machine;
  43
  44   /* function pointers to xcoff specific swap routines */
  45   void (* _xcoff_swap_ldhdr_in)(bfd *, const PTR, struct internal_ldhdr *);
  46   void (* _xcoff_swap_ldhdr_out)(bfd *, const struct internal_ldhdr *, PTR);
  47   void (* _xcoff_swap_ldsym_in)(bfd *, const PTR, struct internal_ldsym *);
  48   void (* _xcoff_swap_ldsym_out)(bfd *, const struct internal_ldsym *, PTR);
  49   void (* _xcoff_swap_ldrel_in)(bfd *, const PTR, struct internal_ldrel *);
  50   void (* _xcoff_swap_ldrel_out)(bfd *, const struct internal_ldrel *, PTR);
  51
  52   /* size of the external struct */
  53   unsigned int _xcoff_ldhdrsz;
  54   unsigned int _xcoff_ldsymsz;
  55   unsigned int _xcoff_ldrelsz;
  56
  57   /* size an entry in a descriptor section */
  58   unsigned int _xcoff_function_descriptor_size;
  59
  60   /* size of the small aout file header */
  61   unsigned int _xcoff_small_aout_header_size;
  62
  63   /*
  64    * version
  65    * loader version
  66    * 1 : xcoff32
  67    * 2 : xcoff64
  68    */
  69   unsigned long _xcoff_ldhdr_version;
  70
  71   boolean (* _xcoff_put_symbol_name)(bfd *, struct bfd_strtab_hash *,
  72                                      struct internal_syment *,
  73                                      const char *);
  74
  75   boolean (* _xcoff_put_ldsymbol_name)(bfd *, struct xcoff_loader_info *,
  76                                        struct internal_ldsym *,
  77                                        const char *);
  78
  79   reloc_howto_type *_xcoff_dynamic_reloc;
  80
  81   asection * (* _xcoff_create_csect_from_smclas) (bfd *, union internal_auxent *, const char *);
  82
  83   /*
  84    * line_no and reloc overflow
  85    * 32 overflows to another section when the line_no or reloc count go
  86    * over 0xffff.  64 does not overflow.
  87    */
  88   boolean (*_xcoff_is_lineno_count_overflow)(bfd *, bfd_vma);
  89   boolean (*_xcoff_is_reloc_count_overflow)(bfd *, bfd_vma);
  90
  91   /*
  92    * .loader symbol table offset
  93    * 32 is after the .loader header
  94    * 64 is offset in .loader header
  95    *
  96    * Similar for the reloc table
  97    */
  98   bfd_vma (*_xcoff_loader_symbol_offset)(bfd *, struct internal_ldhdr *);
  99   bfd_vma (*_xcoff_loader_reloc_offset)(bfd *, struct internal_ldhdr *);
 100
 101
 102   /*
 103    * Global linkage
 104    *
 105    * The first word of global linkage code must be be modified by
 106    * filling in the correct TOC offset.
 107    */
 108   unsigned long *_xcoff_glink_code;
 109
 110   /*
 111    * Size of the global link code in bytes of the xcoff_glink_code table
 112    */
 113   unsigned long _xcoff_glink_size;
 114
 115 };
 116
 117 /* Look up an entry in an XCOFF link hash table.  */
 118
 119 #define xcoff_link_hash_lookup(table, string, create, copy, follow) \
 120   ((struct xcoff_link_hash_entry *) \
 121    bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\
 122                          (follow)))
 123
 124 /* Traverse an XCOFF link hash table.  */
 125
 126 #define xcoff_link_hash_traverse(table, func, info)                     \
 127   (bfd_link_hash_traverse                                               \
 128    (&(table)->root,                                                     \
 129     (boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func),  \
 130     (info)))
 131
 132 /* Get the XCOFF link hash table from the info structure.  This is
 133    just a cast.  */
 134
 135 #define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash))
 136
 137
 138 #define xcoff_backend(abfd) \
 139   ((struct xcoff_backend_data_rec *) (abfd)->xvec->backend_data)
 140
 141 #define bfd_xcoff_magic_number(a) ((xcoff_backend(a)->_xcoff_magic_number))
 142 #define bfd_xcoff_architecture(a) ((xcoff_backend(a)->_xcoff_architecture))
 143 #define bfd_xcoff_machine(a) ((xcoff_backend(a)->_xcoff_machine))
 144
 145 #define bfd_xcoff_swap_ldhdr_in(a, b, c) \
 146   ((xcoff_backend(a)->_xcoff_swap_ldhdr_in) ((a), (b), (c)))
 147
 148 #define bfd_xcoff_swap_ldhdr_out(a, b, c) \
 149   ((xcoff_backend(a)->_xcoff_swap_ldhdr_out) ((a), (b), (c)))
 150
 151 #define bfd_xcoff_swap_ldsym_in(a, b, c) \
 152   ((xcoff_backend(a)->_xcoff_swap_ldsym_in) ((a), (b), (c)))
 153
 154 #define bfd_xcoff_swap_ldsym_out(a, b, c) \
 155   ((xcoff_backend(a)->_xcoff_swap_ldsym_out) ((a), (b), (c)))
 156
 157 #define bfd_xcoff_swap_ldrel_in(a, b, c) \
 158   ((xcoff_backend(a)->_xcoff_swap_ldrel_in) ((a), (b), (c)))
 159
 160 #define bfd_xcoff_swap_ldrel_out(a, b, c) \
 161   ((xcoff_backend(a)->_xcoff_swap_ldrel_out) ((a), (b), (c)))
 162
 163 #define bfd_xcoff_ldhdrsz(a) ((xcoff_backend(a)->_xcoff_ldhdrsz))
 164 #define bfd_xcoff_ldsymsz(a) ((xcoff_backend(a)->_xcoff_ldsymsz))
 165 #define bfd_xcoff_ldrelsz(a) ((xcoff_backend(a)->_xcoff_ldrelsz))
 166 #define bfd_xcoff_function_descriptor_size(a) \
 167   ((xcoff_backend(a)->_xcoff_function_descriptor_size))
 168 #define bfd_xcoff_small_aout_header_size(a) \
 169   ((xcoff_backend(a)->_xcoff_small_aout_header_size))
 170
 171 #define bfd_xcoff_ldhdr_version(a) ((xcoff_backend(a)->_xcoff_ldhdr_version))
 172
 173 #define bfd_xcoff_put_symbol_name(a, b, c, d) \
 174   ((xcoff_backend(a)->_xcoff_put_symbol_name) ((a), (b), (c), (d)))
 175
 176 #define bfd_xcoff_put_ldsymbol_name(a, b, c, d) \
 177   ((xcoff_backend(a)->_xcoff_put_ldsymbol_name) ((a), (b), (c), (d)))
 178
 179 /* Get the XCOFF hash table entries for a BFD.  */
 180 #define obj_xcoff_sym_hashes(bfd) \
 181   ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd))
 182
 183 #define bfd_xcoff_dynamic_reloc_howto(a) \
 184    ((xcoff_backend(a)->_xcoff_dynamic_reloc))
 185
 186 #define bfd_xcoff_create_csect_from_smclas(a, b, c) \
 187    ((xcoff_backend(a)->_xcoff_create_csect_from_smclas((a), (b), (c))))
 188
 189 #define bfd_xcoff_is_lineno_count_overflow(a, b) \
 190    ((xcoff_backend(a)->_xcoff_is_lineno_count_overflow((a), (b))))
 191
 192 #define bfd_xcoff_is_reloc_count_overflow(a, b) \
 193    ((xcoff_backend(a)->_xcoff_is_reloc_count_overflow((a), (b))))
 194
 195 #define bfd_xcoff_loader_symbol_offset(a, b) \
 196  ((xcoff_backend(a)->_xcoff_loader_symbol_offset((a), (b))))
 197
 198 #define bfd_xcoff_loader_reloc_offset(a, b) \
 199  ((xcoff_backend(a)->_xcoff_loader_reloc_offset((a), (b))))
 200
 201 #define bfd_xcoff_glink_code(a, b) ((xcoff_backend(a)->_xcoff_glink_code[(b)]))
 202 #define bfd_xcoff_glink_code_size(a) ((xcoff_backend(a)->_xcoff_glink_size))
 203
 204 #define bfd_xcoff_is_xcoff64(a) (0x01EF == (bfd_xcoff_magic_number(a)))
 205 #define bfd_xcoff_is_xcoff32(a) (0x01DF == (bfd_xcoff_magic_number(a)))
 206
 207 /* Functions in xcofflink.c.  */
 208
 209 extern long _bfd_xcoff_get_dynamic_symtab_upper_bound PARAMS ((bfd *));
 210 extern long _bfd_xcoff_canonicalize_dynamic_symtab
 211   PARAMS ((bfd *, asymbol **));
 212 extern long _bfd_xcoff_get_dynamic_reloc_upper_bound PARAMS ((bfd *));
 213 extern long _bfd_xcoff_canonicalize_dynamic_reloc
 214   PARAMS ((bfd *, arelent **, asymbol **));
 215 extern struct bfd_link_hash_table *_bfd_xcoff_bfd_link_hash_table_create
 216   PARAMS ((bfd *));
 217 extern boolean _bfd_xcoff_bfd_link_add_symbols
 218   PARAMS ((bfd *, struct bfd_link_info *));
 219 extern boolean _bfd_xcoff_bfd_final_link
 220   PARAMS ((bfd *, struct bfd_link_info *));
 221 extern boolean _bfd_xcoff_slurp_symbol_table
 222   PARAMS ((bfd *));
 223 extern long _bfd_xcoff_get_symbol_table
 224   PARAMS ((bfd *, asymbol **));
 225 extern asymbol *_bfd_xcoff_make_empty_symbol
 226   PARAMS ((bfd *));
 227 extern long _bfd_xcoff_get_symbol_table_upper_bound
 228   PARAMS ((bfd *));
 229 extern void _bfd_xcoff_print_symbol
 230   PARAMS ((bfd *, PTR, asymbol *, bfd_print_symbol_type));
 231 extern void _bfd_xcoff_get_symbol_info
 232   PARAMS ((bfd *, asymbol *, symbol_info *));
 233 extern long _bfd_xcoff_canonicalize_reloc
 234   PARAMS((bfd *, sec_ptr, arelent **, asymbol **));
 235 extern reloc_howto_type *_bfd_xcoff_rtype_to_howto
 236   PARAMS ((bfd *, asection *, struct internal_reloc *,
 237            struct coff_link_hash_entry *, struct internal_syment *,
 238            bfd_vma *));
 239 extern boolean _bfd_xcoff_set_section_contents
 240   PARAMS ((bfd *, asection *, PTR, file_ptr, bfd_size_type));
 241 boolean _bfd_xcoff_write_object_contents PARAMS ((bfd *));
 242
 243
 244 /* XCOFF support routines for the linker.  */
 245
 246 extern boolean bfd_xcoff_link_record_set
 247   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *,
 248            bfd_size_type));
 249 extern boolean bfd_xcoff_import_symbol
 250   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *,
 251            bfd_vma, const char *, const char *, const char *, unsigned int));
 252 extern boolean bfd_xcoff_export_symbol
 253   PARAMS ((bfd *, struct bfd_link_info *, struct bfd_link_hash_entry *));
 254 extern boolean bfd_xcoff_link_count_reloc
 255   PARAMS ((bfd *, struct bfd_link_info *, const char *));
 256 extern boolean bfd_xcoff_record_link_assignment
 257   PARAMS ((bfd *, struct bfd_link_info *, const char *));
 258 extern boolean bfd_xcoff_size_dynamic_sections
 259   PARAMS ((bfd *, struct bfd_link_info *, const char *, const char *,
 260            unsigned long, unsigned long, unsigned long, boolean,
 261            int, boolean, boolean, struct sec **));
 262 extern boolean xcoff_slurp_reloc_table
 263   PARAMS ((bfd *, asection *, asymbol **));
 264
 265 #endif /* LIBXCOFF_H */