1/* BFD XCOFF object file private structure. 2 Copyright 2001, 2002, 2005 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., 51 Franklin Street - Fifth Floor, Boston, MA 02110-1301, 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 29struct 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 void *, struct internal_ldhdr *); 43 void (* _xcoff_swap_ldhdr_out)(bfd *, const struct internal_ldhdr *, void *); 44 void (* _xcoff_swap_ldsym_in) (bfd *, const void *, struct internal_ldsym *); 45 void (* _xcoff_swap_ldsym_out)(bfd *, const struct internal_ldsym *, void *); 46 void (* _xcoff_swap_ldrel_in) (bfd *, const void *, struct internal_ldrel *); 47 void (* _xcoff_swap_ldrel_out)(bfd *, const struct internal_ldrel *, void *); 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 bfd_boolean (* _xcoff_put_symbol_name) 66 (bfd *, struct bfd_strtab_hash *, struct internal_syment *, 67 const char *); 68 69 bfd_boolean (* _xcoff_put_ldsymbol_name) 70 (bfd *, struct xcoff_loader_info *, struct internal_ldsym *, 71 const char *); 72 73 reloc_howto_type *_xcoff_dynamic_reloc; 74 75 asection * (* _xcoff_create_csect_from_smclas) 76 (bfd *, union internal_auxent *, const char *); 77 78 /* Line number and relocation overflow. 79 XCOFF32 overflows to another section when the line number or the 80 relocation count exceeds 0xffff. XCOFF64 does not overflow. */ 81 bfd_boolean (*_xcoff_is_lineno_count_overflow) (bfd *, bfd_vma); 82 bfd_boolean (*_xcoff_is_reloc_count_overflow) (bfd *, bfd_vma); 83 84 /* Loader section symbol and relocation table offset 85 XCOFF32 is after the .loader header 86 XCOFF64 is offset in .loader header. */ 87 bfd_vma (*_xcoff_loader_symbol_offset) (bfd *, struct internal_ldhdr *); 88 bfd_vma (*_xcoff_loader_reloc_offset) (bfd *, struct internal_ldhdr *); 89 90 /* Global linkage. The first word of global linkage code must be be 91 modified by filling in the correct TOC offset. */ 92 unsigned long *_xcoff_glink_code; 93 94 /* Size of the global link code in bytes of the xcoff_glink_code table. */ 95 unsigned long _xcoff_glink_size; 96 97 /* rtinit. */ 98 unsigned int _xcoff_rtinit_size; 99 bfd_boolean (*_xcoff_generate_rtinit) 100 (bfd *, const char *, const char *, bfd_boolean); 101}; 102 103/* Look up an entry in an XCOFF link hash table. */ 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#define xcoff_link_hash_traverse(table, func, info) \ 111 (bfd_link_hash_traverse \ 112 (&(table)->root, \ 113 (bfd_boolean (*) (struct bfd_link_hash_entry *, void *)) (func), \ 114 (info))) 115 116/* Get the XCOFF link hash table from the info structure. This is 117 just a cast. */ 118#define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash)) 119 120 121#define xcoff_backend(abfd) \ 122 ((struct xcoff_backend_data_rec *) (abfd)->xvec->backend_data) 123 124#define bfd_xcoff_magic_number(a) ((xcoff_backend (a)->_xcoff_magic_number)) 125#define bfd_xcoff_architecture(a) ((xcoff_backend (a)->_xcoff_architecture)) 126#define bfd_xcoff_machine(a) ((xcoff_backend (a)->_xcoff_machine)) 127 128#define bfd_xcoff_swap_ldhdr_in(a, b, c) \ 129 ((xcoff_backend (a)->_xcoff_swap_ldhdr_in) ((a), (b), (c))) 130 131#define bfd_xcoff_swap_ldhdr_out(a, b, c) \ 132 ((xcoff_backend (a)->_xcoff_swap_ldhdr_out) ((a), (b), (c))) 133 134#define bfd_xcoff_swap_ldsym_in(a, b, c) \ 135 ((xcoff_backend (a)->_xcoff_swap_ldsym_in) ((a), (b), (c))) 136 137#define bfd_xcoff_swap_ldsym_out(a, b, c) \ 138 ((xcoff_backend (a)->_xcoff_swap_ldsym_out) ((a), (b), (c))) 139 140#define bfd_xcoff_swap_ldrel_in(a, b, c) \ 141 ((xcoff_backend (a)->_xcoff_swap_ldrel_in) ((a), (b), (c))) 142 143#define bfd_xcoff_swap_ldrel_out(a, b, c) \ 144 ((xcoff_backend (a)->_xcoff_swap_ldrel_out) ((a), (b), (c))) 145 146#define bfd_xcoff_ldhdrsz(a) ((xcoff_backend (a)->_xcoff_ldhdrsz)) 147#define bfd_xcoff_ldsymsz(a) ((xcoff_backend (a)->_xcoff_ldsymsz)) 148#define bfd_xcoff_ldrelsz(a) ((xcoff_backend (a)->_xcoff_ldrelsz)) 149#define bfd_xcoff_function_descriptor_size(a) \ 150 ((xcoff_backend (a)->_xcoff_function_descriptor_size)) 151#define bfd_xcoff_small_aout_header_size(a) \ 152 ((xcoff_backend (a)->_xcoff_small_aout_header_size)) 153 154#define bfd_xcoff_ldhdr_version(a) ((xcoff_backend (a)->_xcoff_ldhdr_version)) 155 156#define bfd_xcoff_put_symbol_name(a, b, c, d) \ 157 ((xcoff_backend (a)->_xcoff_put_symbol_name) ((a), (b), (c), (d))) 158 159#define bfd_xcoff_put_ldsymbol_name(a, b, c, d) \ 160 ((xcoff_backend (a)->_xcoff_put_ldsymbol_name) ((a), (b), (c), (d))) 161 162/* Get the XCOFF hash table entries for a BFD. */ 163#define obj_xcoff_sym_hashes(bfd) \ 164 ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd)) 165 166#define bfd_xcoff_dynamic_reloc_howto(a) \ 167 ((xcoff_backend (a)->_xcoff_dynamic_reloc)) 168 169#define bfd_xcoff_create_csect_from_smclas(a, b, c) \ 170 ((xcoff_backend (a)->_xcoff_create_csect_from_smclas((a), (b), (c)))) 171 172#define bfd_xcoff_is_lineno_count_overflow(a, b) \ 173 ((xcoff_backend (a)->_xcoff_is_lineno_count_overflow((a), (b)))) 174 175#define bfd_xcoff_is_reloc_count_overflow(a, b) \ 176 ((xcoff_backend (a)->_xcoff_is_reloc_count_overflow((a), (b)))) 177 178#define bfd_xcoff_loader_symbol_offset(a, b) \ 179 ((xcoff_backend (a)->_xcoff_loader_symbol_offset((a), (b)))) 180 181#define bfd_xcoff_loader_reloc_offset(a, b) \ 182 ((xcoff_backend (a)->_xcoff_loader_reloc_offset((a), (b)))) 183 184#define bfd_xcoff_glink_code(a, b) ((xcoff_backend (a)->_xcoff_glink_code[(b)])) 185#define bfd_xcoff_glink_code_size(a) ((xcoff_backend (a)->_xcoff_glink_size)) 186 187/* Check for the magic number U803XTOCMAGIC or U64_TOCMAGIC for 64 bit 188 targets. */ 189#define bfd_xcoff_is_xcoff64(a) \ 190 ( (0x01EF == (bfd_xcoff_magic_number (a))) \ 191 || (0x01F7 == (bfd_xcoff_magic_number (a)))) 192 193/* Check for the magic number U802TOMAGIC for 32 bit targets. */ 194#define bfd_xcoff_is_xcoff32(a) (0x01DF == (bfd_xcoff_magic_number (a))) 195 196#define bfd_xcoff_rtinit_size(a) ((xcoff_backend (a)->_xcoff_rtinit_size)) 197#define bfd_xcoff_generate_rtinit(a, b, c, d) ((xcoff_backend (a)->_xcoff_generate_rtinit ((a), (b), (c), (d)))) 198 199/* Accessor macros for tdata. */ 200#define bfd_xcoff_text_align_power(a) ((xcoff_data (a)->text_align_power)) 201#define bfd_xcoff_data_align_power(a) ((xcoff_data (a)->data_align_power)) 202 203/* xcoff*_ppc_relocate_section macros */ 204#define XCOFF_MAX_CALCULATE_RELOCATION (0x1c) 205#define XCOFF_MAX_COMPLAIN_OVERFLOW (4) 206/* N_ONES produces N one bits, without overflowing machine arithmetic. */ 207#ifdef N_ONES 208#undef N_ONES 209#endif 210#define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) 211 212#define XCOFF_RELOC_FUNCTION_ARGS \ 213 bfd *, asection *, bfd *, struct internal_reloc *, \ 214 struct internal_syment *, struct reloc_howto_struct *, bfd_vma, bfd_vma, \ 215 bfd_vma *relocation, bfd_byte *contents 216 217#define XCOFF_COMPLAIN_FUNCTION_ARGS \ 218 bfd *, bfd_vma, bfd_vma, struct reloc_howto_struct *howto 219 220extern bfd_boolean (*xcoff_calculate_relocation[XCOFF_MAX_CALCULATE_RELOCATION]) 221 (XCOFF_RELOC_FUNCTION_ARGS); 222extern bfd_boolean (*xcoff_complain_overflow[XCOFF_MAX_COMPLAIN_OVERFLOW]) 223 (XCOFF_COMPLAIN_FUNCTION_ARGS); 224 225/* Relocation functions */ 226bfd_boolean xcoff_reloc_type_noop (XCOFF_RELOC_FUNCTION_ARGS); 227bfd_boolean xcoff_reloc_type_fail (XCOFF_RELOC_FUNCTION_ARGS); 228bfd_boolean xcoff_reloc_type_pos (XCOFF_RELOC_FUNCTION_ARGS); 229bfd_boolean xcoff_reloc_type_neg (XCOFF_RELOC_FUNCTION_ARGS); 230bfd_boolean xcoff_reloc_type_rel (XCOFF_RELOC_FUNCTION_ARGS); 231bfd_boolean xcoff_reloc_type_toc (XCOFF_RELOC_FUNCTION_ARGS); 232bfd_boolean xcoff_reloc_type_ba (XCOFF_RELOC_FUNCTION_ARGS); 233bfd_boolean xcoff_reloc_type_crel (XCOFF_RELOC_FUNCTION_ARGS); 234 235#endif /* LIBXCOFF_H */ 236