1/* BFD XCOFF object file private structure. 2 Copyright 2001, 2002 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 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) 43 PARAMS ((bfd *, const PTR, struct internal_ldhdr *)); 44 void (* _xcoff_swap_ldhdr_out) 45 PARAMS ((bfd *, const struct internal_ldhdr *, PTR)); 46 void (* _xcoff_swap_ldsym_in) 47 PARAMS ((bfd *, const PTR, struct internal_ldsym *)); 48 void (* _xcoff_swap_ldsym_out) 49 PARAMS ((bfd *, const struct internal_ldsym *, PTR)); 50 void (* _xcoff_swap_ldrel_in) 51 PARAMS ((bfd *, const PTR, struct internal_ldrel *)); 52 void (* _xcoff_swap_ldrel_out) 53 PARAMS ((bfd *, const struct internal_ldrel *, PTR)); 54 55 /* Size of the external struct. */ 56 unsigned int _xcoff_ldhdrsz; 57 unsigned int _xcoff_ldsymsz; 58 unsigned int _xcoff_ldrelsz; 59 60 /* Size an entry in a descriptor section. */ 61 unsigned int _xcoff_function_descriptor_size; 62 63 /* Size of the small aout file header. */ 64 unsigned int _xcoff_small_aout_header_size; 65 66 /* Loader version 67 1 : XCOFF32 68 2 : XCOFF64. */ 69 unsigned long _xcoff_ldhdr_version; 70 71 bfd_boolean (* _xcoff_put_symbol_name) 72 PARAMS ((bfd *, struct bfd_strtab_hash *, struct internal_syment *, 73 const char *)); 74 75 bfd_boolean (* _xcoff_put_ldsymbol_name) 76 PARAMS ((bfd *, struct xcoff_loader_info *, struct internal_ldsym *, 77 const char *)); 78 79 reloc_howto_type *_xcoff_dynamic_reloc; 80 81 asection * (* _xcoff_create_csect_from_smclas) 82 PARAMS ((bfd *, union internal_auxent *, const char *)); 83 84 /* Line number and relocation overflow. 85 XCOFF32 overflows to another section when the line number or the 86 relocation count exceeds 0xffff. XCOFF64 does not overflow. */ 87 bfd_boolean (*_xcoff_is_lineno_count_overflow) 88 PARAMS ((bfd *, bfd_vma)); 89 bfd_boolean (*_xcoff_is_reloc_count_overflow) 90 PARAMS ((bfd *, bfd_vma)); 91 92 /* Loader section symbol and relocation table offset 93 XCOFF32 is after the .loader header 94 XCOFF64 is offset in .loader header. */ 95 bfd_vma (*_xcoff_loader_symbol_offset) 96 PARAMS ((bfd *, struct internal_ldhdr *)); 97 bfd_vma (*_xcoff_loader_reloc_offset) 98 PARAMS ((bfd *, struct internal_ldhdr *)); 99 100 /* Global linkage. The first word of global linkage code must be be 101 modified by filling in the correct TOC offset. */ 102 unsigned long *_xcoff_glink_code; 103 104 /* Size of the global link code in bytes of the xcoff_glink_code table. */ 105 unsigned long _xcoff_glink_size; 106 107 /* rtinit. */ 108 unsigned int _xcoff_rtinit_size; 109 bfd_boolean (*_xcoff_generate_rtinit) 110 PARAMS ((bfd *, const char *, const char *, bfd_boolean)); 111}; 112 113/* Look up an entry in an XCOFF link hash table. */ 114#define xcoff_link_hash_lookup(table, string, create, copy, follow) \ 115 ((struct xcoff_link_hash_entry *) \ 116 bfd_link_hash_lookup (&(table)->root, (string), (create), (copy),\ 117 (follow))) 118 119/* Traverse an XCOFF link hash table. */ 120#define xcoff_link_hash_traverse(table, func, info) \ 121 (bfd_link_hash_traverse \ 122 (&(table)->root, \ 123 (bfd_boolean (*) PARAMS ((struct bfd_link_hash_entry *, PTR))) (func), \ 124 (info))) 125 126/* Get the XCOFF link hash table from the info structure. This is 127 just a cast. */ 128#define xcoff_hash_table(p) ((struct xcoff_link_hash_table *) ((p)->hash)) 129 130 131#define xcoff_backend(abfd) \ 132 ((struct xcoff_backend_data_rec *) (abfd)->xvec->backend_data) 133 134#define bfd_xcoff_magic_number(a) ((xcoff_backend(a)->_xcoff_magic_number)) 135#define bfd_xcoff_architecture(a) ((xcoff_backend(a)->_xcoff_architecture)) 136#define bfd_xcoff_machine(a) ((xcoff_backend(a)->_xcoff_machine)) 137 138#define bfd_xcoff_swap_ldhdr_in(a, b, c) \ 139 ((xcoff_backend(a)->_xcoff_swap_ldhdr_in) ((a), (b), (c))) 140 141#define bfd_xcoff_swap_ldhdr_out(a, b, c) \ 142 ((xcoff_backend(a)->_xcoff_swap_ldhdr_out) ((a), (b), (c))) 143 144#define bfd_xcoff_swap_ldsym_in(a, b, c) \ 145 ((xcoff_backend(a)->_xcoff_swap_ldsym_in) ((a), (b), (c))) 146 147#define bfd_xcoff_swap_ldsym_out(a, b, c) \ 148 ((xcoff_backend(a)->_xcoff_swap_ldsym_out) ((a), (b), (c))) 149 150#define bfd_xcoff_swap_ldrel_in(a, b, c) \ 151 ((xcoff_backend(a)->_xcoff_swap_ldrel_in) ((a), (b), (c))) 152 153#define bfd_xcoff_swap_ldrel_out(a, b, c) \ 154 ((xcoff_backend(a)->_xcoff_swap_ldrel_out) ((a), (b), (c))) 155 156#define bfd_xcoff_ldhdrsz(a) ((xcoff_backend(a)->_xcoff_ldhdrsz)) 157#define bfd_xcoff_ldsymsz(a) ((xcoff_backend(a)->_xcoff_ldsymsz)) 158#define bfd_xcoff_ldrelsz(a) ((xcoff_backend(a)->_xcoff_ldrelsz)) 159#define bfd_xcoff_function_descriptor_size(a) \ 160 ((xcoff_backend(a)->_xcoff_function_descriptor_size)) 161#define bfd_xcoff_small_aout_header_size(a) \ 162 ((xcoff_backend(a)->_xcoff_small_aout_header_size)) 163 164#define bfd_xcoff_ldhdr_version(a) ((xcoff_backend(a)->_xcoff_ldhdr_version)) 165 166#define bfd_xcoff_put_symbol_name(a, b, c, d) \ 167 ((xcoff_backend(a)->_xcoff_put_symbol_name) ((a), (b), (c), (d))) 168 169#define bfd_xcoff_put_ldsymbol_name(a, b, c, d) \ 170 ((xcoff_backend(a)->_xcoff_put_ldsymbol_name) ((a), (b), (c), (d))) 171 172/* Get the XCOFF hash table entries for a BFD. */ 173#define obj_xcoff_sym_hashes(bfd) \ 174 ((struct xcoff_link_hash_entry **) obj_coff_sym_hashes (bfd)) 175 176#define bfd_xcoff_dynamic_reloc_howto(a) \ 177 ((xcoff_backend(a)->_xcoff_dynamic_reloc)) 178 179#define bfd_xcoff_create_csect_from_smclas(a, b, c) \ 180 ((xcoff_backend(a)->_xcoff_create_csect_from_smclas((a), (b), (c)))) 181 182#define bfd_xcoff_is_lineno_count_overflow(a, b) \ 183 ((xcoff_backend(a)->_xcoff_is_lineno_count_overflow((a), (b)))) 184 185#define bfd_xcoff_is_reloc_count_overflow(a, b) \ 186 ((xcoff_backend(a)->_xcoff_is_reloc_count_overflow((a), (b)))) 187 188#define bfd_xcoff_loader_symbol_offset(a, b) \ 189 ((xcoff_backend(a)->_xcoff_loader_symbol_offset((a), (b)))) 190 191#define bfd_xcoff_loader_reloc_offset(a, b) \ 192 ((xcoff_backend(a)->_xcoff_loader_reloc_offset((a), (b)))) 193 194#define bfd_xcoff_glink_code(a, b) ((xcoff_backend(a)->_xcoff_glink_code[(b)])) 195#define bfd_xcoff_glink_code_size(a) ((xcoff_backend(a)->_xcoff_glink_size)) 196 197/* Check for the magic number U803XTOCMAGIC or U64_TOCMAGIC for 64 bit 198 targets. */ 199#define bfd_xcoff_is_xcoff64(a) \ 200 ( (0x01EF == (bfd_xcoff_magic_number(a))) \ 201 || (0x01F7 == (bfd_xcoff_magic_number(a)))) 202 203/* Check for the magic number U802TOMAGIC for 32 bit targets. */ 204#define bfd_xcoff_is_xcoff32(a) (0x01DF == (bfd_xcoff_magic_number(a))) 205 206#define bfd_xcoff_rtinit_size(a) ((xcoff_backend(a)->_xcoff_rtinit_size)) 207#define bfd_xcoff_generate_rtinit(a, b, c, d) ((xcoff_backend(a)->_xcoff_generate_rtinit ((a), (b), (c), (d)))) 208 209/* Accessor macros for tdata. */ 210#define bfd_xcoff_text_align_power(a) ((xcoff_data (a)->text_align_power)) 211#define bfd_xcoff_data_align_power(a) ((xcoff_data (a)->data_align_power)) 212 213/* xcoff*_ppc_relocate_section macros */ 214#define XCOFF_MAX_CALCULATE_RELOCATION (0x1c) 215#define XCOFF_MAX_COMPLAIN_OVERFLOW (4) 216/* N_ONES produces N one bits, without overflowing machine arithmetic. */ 217#ifdef N_ONES 218#undef N_ONES 219#endif 220#define N_ONES(n) (((((bfd_vma) 1 << ((n) - 1)) - 1) << 1) | 1) 221 222#define XCOFF_RELOC_FUNCTION_ARGS \ 223 bfd *, asection *, bfd *, struct internal_reloc *, \ 224 struct internal_syment *, struct reloc_howto_struct *, bfd_vma, bfd_vma, \ 225 bfd_vma *relocation, bfd_byte *contents 226 227#define XCOFF_COMPLAIN_FUNCTION_ARGS \ 228 bfd *, bfd_vma, bfd_vma, struct reloc_howto_struct *howto 229 230extern bfd_boolean (*xcoff_calculate_relocation[XCOFF_MAX_CALCULATE_RELOCATION]) 231 PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 232extern bfd_boolean (*xcoff_complain_overflow[XCOFF_MAX_COMPLAIN_OVERFLOW]) 233 PARAMS ((XCOFF_COMPLAIN_FUNCTION_ARGS)); 234 235/* Relocation functions */ 236bfd_boolean xcoff_reloc_type_noop PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 237bfd_boolean xcoff_reloc_type_fail PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 238bfd_boolean xcoff_reloc_type_pos PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 239bfd_boolean xcoff_reloc_type_neg PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 240bfd_boolean xcoff_reloc_type_rel PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 241bfd_boolean xcoff_reloc_type_toc PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 242bfd_boolean xcoff_reloc_type_ba PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 243bfd_boolean xcoff_reloc_type_crel PARAMS ((XCOFF_RELOC_FUNCTION_ARGS)); 244 245#endif /* LIBXCOFF_H */ 246