| 1 | /* BFD XCOFF object file private structure. |
| 2 | Copyright (C) 2001-2015 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 3 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., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #ifndef LIBXCOFF_H |
| 23 | #define LIBXCOFF_H |
| 24 | |
| 25 | /* This is the backend information kept for XCOFF files. This |
| 26 | structure is constant for a particular backend. The first element |
| 27 | is the COFF backend data structure, so that XCOFF targets can use |
| 28 | the generic COFF code. */ |
| 29 | |
| 30 | struct xcoff_backend_data_rec |
| 31 | { |
| 32 | /* COFF backend information. */ |
| 33 | bfd_coff_backend_data coff; |
| 34 | |
| 35 | /* Magic number. */ |
| 36 | unsigned short _xcoff_magic_number; |
| 37 | |
| 38 | /* Architecture and machine for coff_set_arch_mach_hook. */ |
| 39 | enum bfd_architecture _xcoff_architecture; |
| 40 | long _xcoff_machine; |
| 41 | |
| 42 | /* Function pointers to xcoff specific swap routines. */ |
| 43 | void (* _xcoff_swap_ldhdr_in) (bfd *, const void *, struct internal_ldhdr *); |
| 44 | void (* _xcoff_swap_ldhdr_out)(bfd *, const struct internal_ldhdr *, void *); |
| 45 | void (* _xcoff_swap_ldsym_in) (bfd *, const void *, struct internal_ldsym *); |
| 46 | void (* _xcoff_swap_ldsym_out)(bfd *, const struct internal_ldsym *, void *); |
| 47 | void (* _xcoff_swap_ldrel_in) (bfd *, const void *, struct internal_ldrel *); |
| 48 | void (* _xcoff_swap_ldrel_out)(bfd *, const struct internal_ldrel *, void *); |
| 49 | |
| 50 | /* Size of the external struct. */ |
| 51 | unsigned int _xcoff_ldhdrsz; |
| 52 | unsigned int _xcoff_ldsymsz; |
| 53 | unsigned int _xcoff_ldrelsz; |
| 54 | |
| 55 | /* Size an entry in a descriptor section. */ |
| 56 | unsigned int _xcoff_function_descriptor_size; |
| 57 | |
| 58 | /* Size of the small aout file header. */ |
| 59 | unsigned int _xcoff_small_aout_header_size; |
| 60 | |
| 61 | /* Loader version |
| 62 | 1 : XCOFF32 |
| 63 | 2 : XCOFF64. */ |
| 64 | unsigned long _xcoff_ldhdr_version; |
| 65 | |
| 66 | bfd_boolean (* _xcoff_put_symbol_name) |
| 67 | (bfd *, struct bfd_strtab_hash *, struct internal_syment *, |
| 68 | const char *); |
| 69 | |
| 70 | bfd_boolean (* _xcoff_put_ldsymbol_name) |
| 71 | (bfd *, struct xcoff_loader_info *, struct internal_ldsym *, |
| 72 | const char *); |
| 73 | |
| 74 | reloc_howto_type *_xcoff_dynamic_reloc; |
| 75 | |
| 76 | asection * (* _xcoff_create_csect_from_smclas) |
| 77 | (bfd *, union internal_auxent *, const char *); |
| 78 | |
| 79 | /* Line number and relocation overflow. |
| 80 | XCOFF32 overflows to another section when the line number or the |
| 81 | relocation count exceeds 0xffff. XCOFF64 does not overflow. */ |
| 82 | bfd_boolean (*_xcoff_is_lineno_count_overflow) (bfd *, bfd_vma); |
| 83 | bfd_boolean (*_xcoff_is_reloc_count_overflow) (bfd *, bfd_vma); |
| 84 | |
| 85 | /* Loader section symbol and relocation table offset |
| 86 | XCOFF32 is after the .loader header |
| 87 | XCOFF64 is offset in .loader header. */ |
| 88 | bfd_vma (*_xcoff_loader_symbol_offset) (bfd *, struct internal_ldhdr *); |
| 89 | bfd_vma (*_xcoff_loader_reloc_offset) (bfd *, struct internal_ldhdr *); |
| 90 | |
| 91 | /* Global linkage. The first word of global linkage code must be be |
| 92 | modified by filling in the correct TOC offset. */ |
| 93 | unsigned long *_xcoff_glink_code; |
| 94 | |
| 95 | /* Size of the global link code in bytes of the xcoff_glink_code table. */ |
| 96 | unsigned long _xcoff_glink_size; |
| 97 | |
| 98 | /* rtinit. */ |
| 99 | unsigned int _xcoff_rtinit_size; |
| 100 | bfd_boolean (*_xcoff_generate_rtinit) |
| 101 | (bfd *, const char *, const char *, bfd_boolean); |
| 102 | }; |
| 103 | |
| 104 | /* Look up an entry in an XCOFF link hash table. */ |
| 105 | #define xcoff_link_hash_lookup(table, string, create, copy, follow) \ |
| 106 | ((struct xcoff_link_hash_entry *) \ |
| 107 | bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\ |
| 108 | (follow))) |
| 109 | |
| 110 | /* Traverse an XCOFF link hash table. */ |
| 111 | #define xcoff_link_hash_traverse(table, func, info) \ |
| 112 | (bfd_link_hash_traverse \ |
| 113 | (&(table)->root, \ |
| 114 | (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ |
| 115 | (info))) |
| 116 | |
| 117 | /* Get the XCOFF link hash table from the info structure. This is |
| 118 | just a cast. */ |
| 119 | #define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash)) |
| 120 | |
| 121 | |
| 122 | #define xcoff_backend(abfd) \ |
| 123 | ((struct xcoff_backend_data_rec *) (abfd)->xvec->backend_data) |
| 124 | |
| 125 | #define bfd_xcoff_magic_number(a) ((xcoff_backend (a)->_xcoff_magic_number)) |
| 126 | #define bfd_xcoff_architecture(a) ((xcoff_backend (a)->_xcoff_architecture)) |
| 127 | #define bfd_xcoff_machine(a) ((xcoff_backend (a)->_xcoff_machine)) |
| 128 | |
| 129 | #define bfd_xcoff_swap_ldhdr_in(a, b, c) \ |
| 130 | ((xcoff_backend (a)->_xcoff_swap_ldhdr_in) ((a), (b), (c))) |
| 131 | |
| 132 | #define bfd_xcoff_swap_ldhdr_out(a, b, c) \ |
| 133 | ((xcoff_backend (a)->_xcoff_swap_ldhdr_out) ((a), (b), (c))) |
| 134 | |
| 135 | #define bfd_xcoff_swap_ldsym_in(a, b, c) \ |
| 136 | ((xcoff_backend (a)->_xcoff_swap_ldsym_in) ((a), (b), (c))) |
| 137 | |
| 138 | #define bfd_xcoff_swap_ldsym_out(a, b, c) \ |
| 139 | ((xcoff_backend (a)->_xcoff_swap_ldsym_out) ((a), (b), (c))) |
| 140 | |
| 141 | #define bfd_xcoff_swap_ldrel_in(a, b, c) \ |
| 142 | ((xcoff_backend (a)->_xcoff_swap_ldrel_in) ((a), (b), (c))) |
| 143 | |
| 144 | #define bfd_xcoff_swap_ldrel_out(a, b, c) \ |
| 145 | ((xcoff_backend (a)->_xcoff_swap_ldrel_out) ((a), (b), (c))) |
| 146 | |
| 147 | #define bfd_xcoff_ldhdrsz(a) ((xcoff_backend (a)->_xcoff_ldhdrsz)) |
| 148 | #define bfd_xcoff_ldsymsz(a) ((xcoff_backend (a)->_xcoff_ldsymsz)) |
| 149 | #define bfd_xcoff_ldrelsz(a) ((xcoff_backend (a)->_xcoff_ldrelsz)) |
| 150 | #define bfd_xcoff_function_descriptor_size(a) \ |
| 151 | ((xcoff_backend (a)->_xcoff_function_descriptor_size)) |
| 152 | #define bfd_xcoff_small_aout_header_size(a) \ |
| 153 | ((xcoff_backend (a)->_xcoff_small_aout_header_size)) |
| 154 | |
| 155 | #define bfd_xcoff_ldhdr_version(a) ((xcoff_backend (a)->_xcoff_ldhdr_version)) |
| 156 | |
| 157 | #define bfd_xcoff_put_symbol_name(a, b, c, d) \ |
| 158 | ((xcoff_backend (a)->_xcoff_put_symbol_name) ((a), (b), (c), (d))) |
| 159 | |
| 160 | #define bfd_xcoff_put_ldsymbol_name(a, b, c, d) \ |
| 161 | ((xcoff_backend (a)->_xcoff_put_ldsymbol_name) ((a), (b), (c), (d))) |
| 162 | |
| 163 | /* Get the XCOFF hash table entries for a BFD. */ |
| 164 | #define obj_xcoff_sym_hashes(bfd) \ |
| 165 | ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd)) |
| 166 | |
| 167 | #define bfd_xcoff_dynamic_reloc_howto(a) \ |
| 168 | ((xcoff_backend (a)->_xcoff_dynamic_reloc)) |
| 169 | |
| 170 | #define bfd_xcoff_create_csect_from_smclas(a, b, c) \ |
| 171 | ((xcoff_backend (a)->_xcoff_create_csect_from_smclas((a), (b), (c)))) |
| 172 | |
| 173 | #define bfd_xcoff_is_lineno_count_overflow(a, b) \ |
| 174 | ((xcoff_backend (a)->_xcoff_is_lineno_count_overflow((a), (b)))) |
| 175 | |
| 176 | #define bfd_xcoff_is_reloc_count_overflow(a, b) \ |
| 177 | ((xcoff_backend (a)->_xcoff_is_reloc_count_overflow((a), (b)))) |
| 178 | |
| 179 | #define bfd_xcoff_loader_symbol_offset(a, b) \ |
| 180 | ((xcoff_backend (a)->_xcoff_loader_symbol_offset((a), (b)))) |
| 181 | |
| 182 | #define bfd_xcoff_loader_reloc_offset(a, b) \ |
| 183 | ((xcoff_backend (a)->_xcoff_loader_reloc_offset((a), (b)))) |
| 184 | |
| 185 | #define bfd_xcoff_glink_code(a, b) ((xcoff_backend (a)->_xcoff_glink_code[(b)])) |
| 186 | #define bfd_xcoff_glink_code_size(a) ((xcoff_backend (a)->_xcoff_glink_size)) |
| 187 | |
| 188 | /* Check for the magic number U803XTOCMAGIC or U64_TOCMAGIC for 64 bit |
| 189 | targets. */ |
| 190 | #define bfd_xcoff_is_xcoff64(a) \ |
| 191 | ( (0x01EF == (bfd_xcoff_magic_number (a))) \ |
| 192 | || (0x01F7 == (bfd_xcoff_magic_number (a)))) |
| 193 | |
| 194 | /* Check for the magic number U802TOMAGIC for 32 bit targets. */ |
| 195 | #define bfd_xcoff_is_xcoff32(a) (0x01DF == (bfd_xcoff_magic_number (a))) |
| 196 | |
| 197 | #define bfd_xcoff_rtinit_size(a) ((xcoff_backend (a)->_xcoff_rtinit_size)) |
| 198 | #define bfd_xcoff_generate_rtinit(a, b, c, d) ((xcoff_backend (a)->_xcoff_generate_rtinit ((a), (b), (c), (d)))) |
| 199 | |
| 200 | /* Accessor macros for tdata. */ |
| 201 | #define bfd_xcoff_text_align_power(a) ((xcoff_data (a)->text_align_power)) |
| 202 | #define bfd_xcoff_data_align_power(a) ((xcoff_data (a)->data_align_power)) |
| 203 | |
| 204 | /* xcoff*_ppc_relocate_section macros */ |
| 205 | #define XCOFF_MAX_CALCULATE_RELOCATION (0x1c) |
| 206 | #define XCOFF_MAX_COMPLAIN_OVERFLOW (4) |
| 207 | /* N_ONES produces N one bits, without overflowing machine arithmetic. */ |
| 208 | #ifdef N_ONES |
| 209 | #undef N_ONES |
| 210 | #endif |
| 211 | #define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) |
| 212 | |
| 213 | #define XCOFF_RELOC_FUNCTION_ARGS \ |
| 214 | bfd *, asection *, bfd *, struct internal_reloc *, \ |
| 215 | struct internal_syment *, struct reloc_howto_struct *, bfd_vma, bfd_vma, \ |
| 216 | bfd_vma *relocation, bfd_byte *contents |
| 217 | |
| 218 | #define XCOFF_COMPLAIN_FUNCTION_ARGS \ |
| 219 | bfd *, bfd_vma, bfd_vma, struct reloc_howto_struct *howto |
| 220 | |
| 221 | extern bfd_boolean (*xcoff_calculate_relocation[XCOFF_MAX_CALCULATE_RELOCATION]) |
| 222 | (XCOFF_RELOC_FUNCTION_ARGS); |
| 223 | extern bfd_boolean (*xcoff_complain_overflow[XCOFF_MAX_COMPLAIN_OVERFLOW]) |
| 224 | (XCOFF_COMPLAIN_FUNCTION_ARGS); |
| 225 | |
| 226 | #define XCOFF_NO_LONG_SECTION_NAMES (FALSE), bfd_coff_set_long_section_names_disallowed |
| 227 | |
| 228 | /* Relocation functions */ |
| 229 | bfd_boolean xcoff_reloc_type_noop (XCOFF_RELOC_FUNCTION_ARGS); |
| 230 | bfd_boolean xcoff_reloc_type_fail (XCOFF_RELOC_FUNCTION_ARGS); |
| 231 | bfd_boolean xcoff_reloc_type_pos (XCOFF_RELOC_FUNCTION_ARGS); |
| 232 | bfd_boolean xcoff_reloc_type_neg (XCOFF_RELOC_FUNCTION_ARGS); |
| 233 | bfd_boolean xcoff_reloc_type_rel (XCOFF_RELOC_FUNCTION_ARGS); |
| 234 | bfd_boolean xcoff_reloc_type_toc (XCOFF_RELOC_FUNCTION_ARGS); |
| 235 | bfd_boolean xcoff_reloc_type_ba (XCOFF_RELOC_FUNCTION_ARGS); |
| 236 | bfd_boolean xcoff_reloc_type_crel (XCOFF_RELOC_FUNCTION_ARGS); |
| 237 | |
| 238 | /* Structure to describe dwarf sections. |
| 239 | Useful to convert from XCOFF section name to flag and vice-versa. |
| 240 | Also mark if section has a length field at the beginning. */ |
| 241 | struct xcoff_dwsect_name { |
| 242 | /* A XCOFF dwarf section is identified by its name. */ |
| 243 | unsigned int flag; |
| 244 | |
| 245 | /* Corresponding XCOFF section name. */ |
| 246 | const char *name; |
| 247 | |
| 248 | /* True if size must be prepended. */ |
| 249 | bfd_boolean def_size; |
| 250 | }; |
| 251 | |
| 252 | /* Number of entries in the array. The number is known and public so that user |
| 253 | can 'extend' this array by index. */ |
| 254 | #define XCOFF_DWSECT_NBR_NAMES 8 |
| 255 | |
| 256 | /* The dwarf sections array. */ |
| 257 | extern const struct xcoff_dwsect_name |
| 258 | xcoff_dwsect_names[XCOFF_DWSECT_NBR_NAMES]; |
| 259 | |
| 260 | #endif /* LIBXCOFF_H */ |