| 1 | /* ELF executable support for BFD. |
| 2 | Copyright 1991, 92, 93, 94, 95, 96, 97, 98, 1999 Free Software |
| 3 | Foundation, Inc. |
| 4 | |
| 5 | Written by Fred Fish @ Cygnus Support, from information published |
| 6 | in "UNIX System V Release 4, Programmers Guide: ANSI C and |
| 7 | Programming Support Tools". Sufficient support for gdb. |
| 8 | |
| 9 | Rewritten by Mark Eichin @ Cygnus Support, from information |
| 10 | published in "System V Application Binary Interface", chapters 4 |
| 11 | and 5, as well as the various "Processor Supplement" documents |
| 12 | derived from it. Added support for assembler and other object file |
| 13 | utilities. Further work done by Ken Raeburn (Cygnus Support), Michael |
| 14 | Meissner (Open Software Foundation), and Peter Hoogenboom (University |
| 15 | of Utah) to finish and extend this. |
| 16 | |
| 17 | This file is part of BFD, the Binary File Descriptor library. |
| 18 | |
| 19 | This program is free software; you can redistribute it and/or modify |
| 20 | it under the terms of the GNU General Public License as published by |
| 21 | the Free Software Foundation; either version 2 of the License, or |
| 22 | (at your option) any later version. |
| 23 | |
| 24 | This program is distributed in the hope that it will be useful, |
| 25 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 26 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 27 | GNU General Public License for more details. |
| 28 | |
| 29 | You should have received a copy of the GNU General Public License |
| 30 | along with this program; if not, write to the Free Software |
| 31 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 32 | |
| 33 | /* Problems and other issues to resolve. |
| 34 | |
| 35 | (1) BFD expects there to be some fixed number of "sections" in |
| 36 | the object file. I.E. there is a "section_count" variable in the |
| 37 | bfd structure which contains the number of sections. However, ELF |
| 38 | supports multiple "views" of a file. In particular, with current |
| 39 | implementations, executable files typically have two tables, a |
| 40 | program header table and a section header table, both of which |
| 41 | partition the executable. |
| 42 | |
| 43 | In ELF-speak, the "linking view" of the file uses the section header |
| 44 | table to access "sections" within the file, and the "execution view" |
| 45 | uses the program header table to access "segments" within the file. |
| 46 | "Segments" typically may contain all the data from one or more |
| 47 | "sections". |
| 48 | |
| 49 | Note that the section header table is optional in ELF executables, |
| 50 | but it is this information that is most useful to gdb. If the |
| 51 | section header table is missing, then gdb should probably try |
| 52 | to make do with the program header table. (FIXME) |
| 53 | |
| 54 | (2) The code in this file is compiled twice, once in 32-bit mode and |
| 55 | once in 64-bit mode. More of it should be made size-independent |
| 56 | and moved into elf.c. |
| 57 | |
| 58 | (3) ELF section symbols are handled rather sloppily now. This should |
| 59 | be cleaned up, and ELF section symbols reconciled with BFD section |
| 60 | symbols. |
| 61 | |
| 62 | (4) We need a published spec for 64-bit ELF. We've got some stuff here |
| 63 | that we're using for SPARC V9 64-bit chips, but don't assume that |
| 64 | it's cast in stone. |
| 65 | */ |
| 66 | |
| 67 | #include "bfd.h" |
| 68 | #include "sysdep.h" |
| 69 | #include "bfdlink.h" |
| 70 | #include "libbfd.h" |
| 71 | #include "elf-bfd.h" |
| 72 | |
| 73 | /* Renaming structures, typedefs, macros and functions to be size-specific. */ |
| 74 | #define Elf_External_Ehdr NAME(Elf,External_Ehdr) |
| 75 | #define Elf_External_Sym NAME(Elf,External_Sym) |
| 76 | #define Elf_External_Shdr NAME(Elf,External_Shdr) |
| 77 | #define Elf_External_Phdr NAME(Elf,External_Phdr) |
| 78 | #define Elf_External_Rel NAME(Elf,External_Rel) |
| 79 | #define Elf_External_Rela NAME(Elf,External_Rela) |
| 80 | #define Elf_External_Dyn NAME(Elf,External_Dyn) |
| 81 | |
| 82 | #define elf_core_file_failing_command NAME(bfd_elf,core_file_failing_command) |
| 83 | #define elf_core_file_failing_signal NAME(bfd_elf,core_file_failing_signal) |
| 84 | #define elf_core_file_matches_executable_p \ |
| 85 | NAME(bfd_elf,core_file_matches_executable_p) |
| 86 | #define elf_object_p NAME(bfd_elf,object_p) |
| 87 | #define elf_core_file_p NAME(bfd_elf,core_file_p) |
| 88 | #define elf_get_symtab_upper_bound NAME(bfd_elf,get_symtab_upper_bound) |
| 89 | #define elf_get_dynamic_symtab_upper_bound \ |
| 90 | NAME(bfd_elf,get_dynamic_symtab_upper_bound) |
| 91 | #define elf_swap_reloc_in NAME(bfd_elf,swap_reloc_in) |
| 92 | #define elf_swap_reloca_in NAME(bfd_elf,swap_reloca_in) |
| 93 | #define elf_swap_reloc_out NAME(bfd_elf,swap_reloc_out) |
| 94 | #define elf_swap_reloca_out NAME(bfd_elf,swap_reloca_out) |
| 95 | #define elf_swap_symbol_in NAME(bfd_elf,swap_symbol_in) |
| 96 | #define elf_swap_symbol_out NAME(bfd_elf,swap_symbol_out) |
| 97 | #define elf_swap_phdr_in NAME(bfd_elf,swap_phdr_in) |
| 98 | #define elf_swap_phdr_out NAME(bfd_elf,swap_phdr_out) |
| 99 | #define elf_swap_dyn_in NAME(bfd_elf,swap_dyn_in) |
| 100 | #define elf_swap_dyn_out NAME(bfd_elf,swap_dyn_out) |
| 101 | #define elf_get_reloc_upper_bound NAME(bfd_elf,get_reloc_upper_bound) |
| 102 | #define elf_canonicalize_reloc NAME(bfd_elf,canonicalize_reloc) |
| 103 | #define elf_slurp_symbol_table NAME(bfd_elf,slurp_symbol_table) |
| 104 | #define elf_get_symtab NAME(bfd_elf,get_symtab) |
| 105 | #define elf_canonicalize_dynamic_symtab \ |
| 106 | NAME(bfd_elf,canonicalize_dynamic_symtab) |
| 107 | #define elf_make_empty_symbol NAME(bfd_elf,make_empty_symbol) |
| 108 | #define elf_get_symbol_info NAME(bfd_elf,get_symbol_info) |
| 109 | #define elf_get_lineno NAME(bfd_elf,get_lineno) |
| 110 | #define elf_set_arch_mach NAME(bfd_elf,set_arch_mach) |
| 111 | #define elf_find_nearest_line NAME(bfd_elf,find_nearest_line) |
| 112 | #define elf_sizeof_headers NAME(bfd_elf,sizeof_headers) |
| 113 | #define elf_set_section_contents NAME(bfd_elf,set_section_contents) |
| 114 | #define elf_no_info_to_howto NAME(bfd_elf,no_info_to_howto) |
| 115 | #define elf_no_info_to_howto_rel NAME(bfd_elf,no_info_to_howto_rel) |
| 116 | #define elf_find_section NAME(bfd_elf,find_section) |
| 117 | #define elf_bfd_link_add_symbols NAME(bfd_elf,bfd_link_add_symbols) |
| 118 | #define elf_add_dynamic_entry NAME(bfd_elf,add_dynamic_entry) |
| 119 | #define elf_write_shdrs_and_ehdr NAME(bfd_elf,write_shdrs_and_ehdr) |
| 120 | #define elf_write_out_phdrs NAME(bfd_elf,write_out_phdrs) |
| 121 | #define elf_link_create_dynamic_sections \ |
| 122 | NAME(bfd_elf,link_create_dynamic_sections) |
| 123 | #define elf_link_record_dynamic_symbol _bfd_elf_link_record_dynamic_symbol |
| 124 | #define elf_bfd_final_link NAME(bfd_elf,bfd_final_link) |
| 125 | #define elf_create_pointer_linker_section NAME(bfd_elf,create_pointer_linker_section) |
| 126 | #define elf_finish_pointer_linker_section NAME(bfd_elf,finish_pointer_linker_section) |
| 127 | #define elf_gc_sections NAME(_bfd_elf,gc_sections) |
| 128 | #define elf_gc_common_finalize_got_offsets \ |
| 129 | NAME(_bfd_elf,gc_common_finalize_got_offsets) |
| 130 | #define elf_gc_common_final_link NAME(_bfd_elf,gc_common_final_link) |
| 131 | #define elf_gc_record_vtinherit NAME(_bfd_elf,gc_record_vtinherit) |
| 132 | #define elf_gc_record_vtentry NAME(_bfd_elf,gc_record_vtentry) |
| 133 | |
| 134 | #if ARCH_SIZE == 64 |
| 135 | #define ELF_R_INFO(X,Y) ELF64_R_INFO(X,Y) |
| 136 | #define ELF_R_SYM(X) ELF64_R_SYM(X) |
| 137 | #define ELF_R_TYPE(X) ELF64_R_TYPE(X) |
| 138 | #define ELFCLASS ELFCLASS64 |
| 139 | #define FILE_ALIGN 8 |
| 140 | #define LOG_FILE_ALIGN 3 |
| 141 | #endif |
| 142 | #if ARCH_SIZE == 32 |
| 143 | #define ELF_R_INFO(X,Y) ELF32_R_INFO(X,Y) |
| 144 | #define ELF_R_SYM(X) ELF32_R_SYM(X) |
| 145 | #define ELF_R_TYPE(X) ELF32_R_TYPE(X) |
| 146 | #define ELFCLASS ELFCLASS32 |
| 147 | #define FILE_ALIGN 4 |
| 148 | #define LOG_FILE_ALIGN 2 |
| 149 | #endif |
| 150 | |
| 151 | /* Static functions */ |
| 152 | |
| 153 | static void elf_swap_ehdr_in |
| 154 | PARAMS ((bfd *, const Elf_External_Ehdr *, Elf_Internal_Ehdr *)); |
| 155 | static void elf_swap_ehdr_out |
| 156 | PARAMS ((bfd *, const Elf_Internal_Ehdr *, Elf_External_Ehdr *)); |
| 157 | static void elf_swap_shdr_in |
| 158 | PARAMS ((bfd *, const Elf_External_Shdr *, Elf_Internal_Shdr *)); |
| 159 | static void elf_swap_shdr_out |
| 160 | PARAMS ((bfd *, const Elf_Internal_Shdr *, Elf_External_Shdr *)); |
| 161 | |
| 162 | #define elf_stringtab_init _bfd_elf_stringtab_init |
| 163 | |
| 164 | #define section_from_elf_index bfd_section_from_elf_index |
| 165 | |
| 166 | static boolean elf_slurp_reloc_table_from_section |
| 167 | PARAMS ((bfd *, asection *, Elf_Internal_Shdr *, bfd_size_type, |
| 168 | arelent *, asymbol **, boolean)); |
| 169 | static boolean elf_slurp_reloc_table |
| 170 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 171 | |
| 172 | static void write_relocs PARAMS ((bfd *, asection *, PTR)); |
| 173 | |
| 174 | static boolean elf_file_p PARAMS ((Elf_External_Ehdr *)); |
| 175 | |
| 176 | #ifdef DEBUG |
| 177 | static void elf_debug_section PARAMS ((int, Elf_Internal_Shdr *)); |
| 178 | static void elf_debug_file PARAMS ((Elf_Internal_Ehdr *)); |
| 179 | static char *elf_symbol_flags PARAMS ((flagword)); |
| 180 | #endif |
| 181 | \f |
| 182 | /* Structure swapping routines */ |
| 183 | |
| 184 | /* Should perhaps use put_offset, put_word, etc. For now, the two versions |
| 185 | can be handled by explicitly specifying 32 bits or "the long type". */ |
| 186 | #if ARCH_SIZE == 64 |
| 187 | #define put_word bfd_h_put_64 |
| 188 | #define put_signed_word bfd_h_put_signed_64 |
| 189 | #define get_word bfd_h_get_64 |
| 190 | #define get_signed_word bfd_h_get_signed_64 |
| 191 | #endif |
| 192 | #if ARCH_SIZE == 32 |
| 193 | #define put_word bfd_h_put_32 |
| 194 | #define put_signed_word bfd_h_put_signed_32 |
| 195 | #define get_word bfd_h_get_32 |
| 196 | #define get_signed_word bfd_h_get_signed_32 |
| 197 | #endif |
| 198 | |
| 199 | /* Translate an ELF symbol in external format into an ELF symbol in internal |
| 200 | format. */ |
| 201 | |
| 202 | void |
| 203 | elf_swap_symbol_in (abfd, src, dst) |
| 204 | bfd *abfd; |
| 205 | const Elf_External_Sym *src; |
| 206 | Elf_Internal_Sym *dst; |
| 207 | { |
| 208 | dst->st_name = bfd_h_get_32 (abfd, (bfd_byte *) src->st_name); |
| 209 | dst->st_value = get_word (abfd, (bfd_byte *) src->st_value); |
| 210 | dst->st_size = get_word (abfd, (bfd_byte *) src->st_size); |
| 211 | dst->st_info = bfd_h_get_8 (abfd, (bfd_byte *) src->st_info); |
| 212 | dst->st_other = bfd_h_get_8 (abfd, (bfd_byte *) src->st_other); |
| 213 | dst->st_shndx = bfd_h_get_16 (abfd, (bfd_byte *) src->st_shndx); |
| 214 | } |
| 215 | |
| 216 | /* Translate an ELF symbol in internal format into an ELF symbol in external |
| 217 | format. */ |
| 218 | |
| 219 | void |
| 220 | elf_swap_symbol_out (abfd, src, cdst) |
| 221 | bfd *abfd; |
| 222 | const Elf_Internal_Sym *src; |
| 223 | PTR cdst; |
| 224 | { |
| 225 | Elf_External_Sym *dst = (Elf_External_Sym *) cdst; |
| 226 | bfd_h_put_32 (abfd, src->st_name, dst->st_name); |
| 227 | put_word (abfd, src->st_value, dst->st_value); |
| 228 | put_word (abfd, src->st_size, dst->st_size); |
| 229 | bfd_h_put_8 (abfd, src->st_info, dst->st_info); |
| 230 | bfd_h_put_8 (abfd, src->st_other, dst->st_other); |
| 231 | bfd_h_put_16 (abfd, src->st_shndx, dst->st_shndx); |
| 232 | } |
| 233 | |
| 234 | |
| 235 | /* Translate an ELF file header in external format into an ELF file header in |
| 236 | internal format. */ |
| 237 | |
| 238 | static void |
| 239 | elf_swap_ehdr_in (abfd, src, dst) |
| 240 | bfd *abfd; |
| 241 | const Elf_External_Ehdr *src; |
| 242 | Elf_Internal_Ehdr *dst; |
| 243 | { |
| 244 | memcpy (dst->e_ident, src->e_ident, EI_NIDENT); |
| 245 | dst->e_type = bfd_h_get_16 (abfd, (bfd_byte *) src->e_type); |
| 246 | dst->e_machine = bfd_h_get_16 (abfd, (bfd_byte *) src->e_machine); |
| 247 | dst->e_version = bfd_h_get_32 (abfd, (bfd_byte *) src->e_version); |
| 248 | dst->e_entry = get_word (abfd, (bfd_byte *) src->e_entry); |
| 249 | dst->e_phoff = get_word (abfd, (bfd_byte *) src->e_phoff); |
| 250 | dst->e_shoff = get_word (abfd, (bfd_byte *) src->e_shoff); |
| 251 | dst->e_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->e_flags); |
| 252 | dst->e_ehsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_ehsize); |
| 253 | dst->e_phentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phentsize); |
| 254 | dst->e_phnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_phnum); |
| 255 | dst->e_shentsize = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shentsize); |
| 256 | dst->e_shnum = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shnum); |
| 257 | dst->e_shstrndx = bfd_h_get_16 (abfd, (bfd_byte *) src->e_shstrndx); |
| 258 | } |
| 259 | |
| 260 | /* Translate an ELF file header in internal format into an ELF file header in |
| 261 | external format. */ |
| 262 | |
| 263 | static void |
| 264 | elf_swap_ehdr_out (abfd, src, dst) |
| 265 | bfd *abfd; |
| 266 | const Elf_Internal_Ehdr *src; |
| 267 | Elf_External_Ehdr *dst; |
| 268 | { |
| 269 | memcpy (dst->e_ident, src->e_ident, EI_NIDENT); |
| 270 | /* note that all elements of dst are *arrays of unsigned char* already... */ |
| 271 | bfd_h_put_16 (abfd, src->e_type, dst->e_type); |
| 272 | bfd_h_put_16 (abfd, src->e_machine, dst->e_machine); |
| 273 | bfd_h_put_32 (abfd, src->e_version, dst->e_version); |
| 274 | put_word (abfd, src->e_entry, dst->e_entry); |
| 275 | put_word (abfd, src->e_phoff, dst->e_phoff); |
| 276 | put_word (abfd, src->e_shoff, dst->e_shoff); |
| 277 | bfd_h_put_32 (abfd, src->e_flags, dst->e_flags); |
| 278 | bfd_h_put_16 (abfd, src->e_ehsize, dst->e_ehsize); |
| 279 | bfd_h_put_16 (abfd, src->e_phentsize, dst->e_phentsize); |
| 280 | bfd_h_put_16 (abfd, src->e_phnum, dst->e_phnum); |
| 281 | bfd_h_put_16 (abfd, src->e_shentsize, dst->e_shentsize); |
| 282 | bfd_h_put_16 (abfd, src->e_shnum, dst->e_shnum); |
| 283 | bfd_h_put_16 (abfd, src->e_shstrndx, dst->e_shstrndx); |
| 284 | } |
| 285 | |
| 286 | |
| 287 | /* Translate an ELF section header table entry in external format into an |
| 288 | ELF section header table entry in internal format. */ |
| 289 | |
| 290 | static void |
| 291 | elf_swap_shdr_in (abfd, src, dst) |
| 292 | bfd *abfd; |
| 293 | const Elf_External_Shdr *src; |
| 294 | Elf_Internal_Shdr *dst; |
| 295 | { |
| 296 | dst->sh_name = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_name); |
| 297 | dst->sh_type = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_type); |
| 298 | dst->sh_flags = get_word (abfd, (bfd_byte *) src->sh_flags); |
| 299 | dst->sh_addr = get_word (abfd, (bfd_byte *) src->sh_addr); |
| 300 | dst->sh_offset = get_word (abfd, (bfd_byte *) src->sh_offset); |
| 301 | dst->sh_size = get_word (abfd, (bfd_byte *) src->sh_size); |
| 302 | dst->sh_link = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_link); |
| 303 | dst->sh_info = bfd_h_get_32 (abfd, (bfd_byte *) src->sh_info); |
| 304 | dst->sh_addralign = get_word (abfd, (bfd_byte *) src->sh_addralign); |
| 305 | dst->sh_entsize = get_word (abfd, (bfd_byte *) src->sh_entsize); |
| 306 | dst->bfd_section = NULL; |
| 307 | dst->contents = NULL; |
| 308 | } |
| 309 | |
| 310 | /* Translate an ELF section header table entry in internal format into an |
| 311 | ELF section header table entry in external format. */ |
| 312 | |
| 313 | static void |
| 314 | elf_swap_shdr_out (abfd, src, dst) |
| 315 | bfd *abfd; |
| 316 | const Elf_Internal_Shdr *src; |
| 317 | Elf_External_Shdr *dst; |
| 318 | { |
| 319 | /* note that all elements of dst are *arrays of unsigned char* already... */ |
| 320 | bfd_h_put_32 (abfd, src->sh_name, dst->sh_name); |
| 321 | bfd_h_put_32 (abfd, src->sh_type, dst->sh_type); |
| 322 | put_word (abfd, src->sh_flags, dst->sh_flags); |
| 323 | put_word (abfd, src->sh_addr, dst->sh_addr); |
| 324 | put_word (abfd, src->sh_offset, dst->sh_offset); |
| 325 | put_word (abfd, src->sh_size, dst->sh_size); |
| 326 | bfd_h_put_32 (abfd, src->sh_link, dst->sh_link); |
| 327 | bfd_h_put_32 (abfd, src->sh_info, dst->sh_info); |
| 328 | put_word (abfd, src->sh_addralign, dst->sh_addralign); |
| 329 | put_word (abfd, src->sh_entsize, dst->sh_entsize); |
| 330 | } |
| 331 | |
| 332 | |
| 333 | /* Translate an ELF program header table entry in external format into an |
| 334 | ELF program header table entry in internal format. */ |
| 335 | |
| 336 | void |
| 337 | elf_swap_phdr_in (abfd, src, dst) |
| 338 | bfd *abfd; |
| 339 | const Elf_External_Phdr *src; |
| 340 | Elf_Internal_Phdr *dst; |
| 341 | { |
| 342 | dst->p_type = bfd_h_get_32 (abfd, (bfd_byte *) src->p_type); |
| 343 | dst->p_flags = bfd_h_get_32 (abfd, (bfd_byte *) src->p_flags); |
| 344 | dst->p_offset = get_word (abfd, (bfd_byte *) src->p_offset); |
| 345 | dst->p_vaddr = get_word (abfd, (bfd_byte *) src->p_vaddr); |
| 346 | dst->p_paddr = get_word (abfd, (bfd_byte *) src->p_paddr); |
| 347 | dst->p_filesz = get_word (abfd, (bfd_byte *) src->p_filesz); |
| 348 | dst->p_memsz = get_word (abfd, (bfd_byte *) src->p_memsz); |
| 349 | dst->p_align = get_word (abfd, (bfd_byte *) src->p_align); |
| 350 | } |
| 351 | |
| 352 | void |
| 353 | elf_swap_phdr_out (abfd, src, dst) |
| 354 | bfd *abfd; |
| 355 | const Elf_Internal_Phdr *src; |
| 356 | Elf_External_Phdr *dst; |
| 357 | { |
| 358 | /* note that all elements of dst are *arrays of unsigned char* already... */ |
| 359 | bfd_h_put_32 (abfd, src->p_type, dst->p_type); |
| 360 | put_word (abfd, src->p_offset, dst->p_offset); |
| 361 | put_word (abfd, src->p_vaddr, dst->p_vaddr); |
| 362 | put_word (abfd, src->p_paddr, dst->p_paddr); |
| 363 | put_word (abfd, src->p_filesz, dst->p_filesz); |
| 364 | put_word (abfd, src->p_memsz, dst->p_memsz); |
| 365 | bfd_h_put_32 (abfd, src->p_flags, dst->p_flags); |
| 366 | put_word (abfd, src->p_align, dst->p_align); |
| 367 | } |
| 368 | |
| 369 | /* Translate an ELF reloc from external format to internal format. */ |
| 370 | INLINE void |
| 371 | elf_swap_reloc_in (abfd, src, dst) |
| 372 | bfd *abfd; |
| 373 | const Elf_External_Rel *src; |
| 374 | Elf_Internal_Rel *dst; |
| 375 | { |
| 376 | dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset); |
| 377 | dst->r_info = get_word (abfd, (bfd_byte *) src->r_info); |
| 378 | } |
| 379 | |
| 380 | INLINE void |
| 381 | elf_swap_reloca_in (abfd, src, dst) |
| 382 | bfd *abfd; |
| 383 | const Elf_External_Rela *src; |
| 384 | Elf_Internal_Rela *dst; |
| 385 | { |
| 386 | dst->r_offset = get_word (abfd, (bfd_byte *) src->r_offset); |
| 387 | dst->r_info = get_word (abfd, (bfd_byte *) src->r_info); |
| 388 | dst->r_addend = get_signed_word (abfd, (bfd_byte *) src->r_addend); |
| 389 | } |
| 390 | |
| 391 | /* Translate an ELF reloc from internal format to external format. */ |
| 392 | INLINE void |
| 393 | elf_swap_reloc_out (abfd, src, dst) |
| 394 | bfd *abfd; |
| 395 | const Elf_Internal_Rel *src; |
| 396 | Elf_External_Rel *dst; |
| 397 | { |
| 398 | put_word (abfd, src->r_offset, dst->r_offset); |
| 399 | put_word (abfd, src->r_info, dst->r_info); |
| 400 | } |
| 401 | |
| 402 | INLINE void |
| 403 | elf_swap_reloca_out (abfd, src, dst) |
| 404 | bfd *abfd; |
| 405 | const Elf_Internal_Rela *src; |
| 406 | Elf_External_Rela *dst; |
| 407 | { |
| 408 | put_word (abfd, src->r_offset, dst->r_offset); |
| 409 | put_word (abfd, src->r_info, dst->r_info); |
| 410 | put_signed_word (abfd, src->r_addend, dst->r_addend); |
| 411 | } |
| 412 | |
| 413 | INLINE void |
| 414 | elf_swap_dyn_in (abfd, p, dst) |
| 415 | bfd *abfd; |
| 416 | const PTR p; |
| 417 | Elf_Internal_Dyn *dst; |
| 418 | { |
| 419 | const Elf_External_Dyn *src = (const Elf_External_Dyn *) p; |
| 420 | |
| 421 | dst->d_tag = get_word (abfd, src->d_tag); |
| 422 | dst->d_un.d_val = get_word (abfd, src->d_un.d_val); |
| 423 | } |
| 424 | |
| 425 | INLINE void |
| 426 | elf_swap_dyn_out (abfd, src, p) |
| 427 | bfd *abfd; |
| 428 | const Elf_Internal_Dyn *src; |
| 429 | PTR p; |
| 430 | { |
| 431 | Elf_External_Dyn *dst = (Elf_External_Dyn *) p; |
| 432 | |
| 433 | put_word (abfd, src->d_tag, dst->d_tag); |
| 434 | put_word (abfd, src->d_un.d_val, dst->d_un.d_val); |
| 435 | } |
| 436 | \f |
| 437 | /* ELF .o/exec file reading */ |
| 438 | |
| 439 | |
| 440 | /* Begin processing a given object. |
| 441 | |
| 442 | First we validate the file by reading in the ELF header and checking |
| 443 | the magic number. */ |
| 444 | |
| 445 | static INLINE boolean |
| 446 | elf_file_p (x_ehdrp) |
| 447 | Elf_External_Ehdr *x_ehdrp; |
| 448 | { |
| 449 | return ((x_ehdrp->e_ident[EI_MAG0] == ELFMAG0) |
| 450 | && (x_ehdrp->e_ident[EI_MAG1] == ELFMAG1) |
| 451 | && (x_ehdrp->e_ident[EI_MAG2] == ELFMAG2) |
| 452 | && (x_ehdrp->e_ident[EI_MAG3] == ELFMAG3)); |
| 453 | } |
| 454 | |
| 455 | /* Check to see if the file associated with ABFD matches the target vector |
| 456 | that ABFD points to. |
| 457 | |
| 458 | Note that we may be called several times with the same ABFD, but different |
| 459 | target vectors, most of which will not match. We have to avoid leaving |
| 460 | any side effects in ABFD, or any data it points to (like tdata), if the |
| 461 | file does not match the target vector. */ |
| 462 | |
| 463 | const bfd_target * |
| 464 | elf_object_p (abfd) |
| 465 | bfd *abfd; |
| 466 | { |
| 467 | Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ |
| 468 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
| 469 | Elf_External_Shdr x_shdr; /* Section header table entry, external form */ |
| 470 | Elf_Internal_Shdr *i_shdrp = NULL; /* Section header table, internal form */ |
| 471 | unsigned int shindex; |
| 472 | char *shstrtab; /* Internal copy of section header stringtab */ |
| 473 | struct elf_backend_data *ebd; |
| 474 | struct elf_obj_tdata *preserved_tdata = elf_tdata (abfd); |
| 475 | struct elf_obj_tdata *new_tdata = NULL; |
| 476 | asection *s; |
| 477 | |
| 478 | /* Read in the ELF header in external format. */ |
| 479 | |
| 480 | if (bfd_read ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) != sizeof (x_ehdr)) |
| 481 | { |
| 482 | if (bfd_get_error () != bfd_error_system_call) |
| 483 | goto got_wrong_format_error; |
| 484 | else |
| 485 | goto got_no_match; |
| 486 | } |
| 487 | |
| 488 | /* Now check to see if we have a valid ELF file, and one that BFD can |
| 489 | make use of. The magic number must match, the address size ('class') |
| 490 | and byte-swapping must match our XVEC entry, and it must have a |
| 491 | section header table (FIXME: See comments re sections at top of this |
| 492 | file). */ |
| 493 | |
| 494 | if ((elf_file_p (&x_ehdr) == false) || |
| 495 | (x_ehdr.e_ident[EI_VERSION] != EV_CURRENT) || |
| 496 | (x_ehdr.e_ident[EI_CLASS] != ELFCLASS)) |
| 497 | goto got_wrong_format_error; |
| 498 | |
| 499 | /* Check that file's byte order matches xvec's */ |
| 500 | switch (x_ehdr.e_ident[EI_DATA]) |
| 501 | { |
| 502 | case ELFDATA2MSB: /* Big-endian */ |
| 503 | if (! bfd_header_big_endian (abfd)) |
| 504 | goto got_wrong_format_error; |
| 505 | break; |
| 506 | case ELFDATA2LSB: /* Little-endian */ |
| 507 | if (! bfd_header_little_endian (abfd)) |
| 508 | goto got_wrong_format_error; |
| 509 | break; |
| 510 | case ELFDATANONE: /* No data encoding specified */ |
| 511 | default: /* Unknown data encoding specified */ |
| 512 | goto got_wrong_format_error; |
| 513 | } |
| 514 | |
| 515 | /* Allocate an instance of the elf_obj_tdata structure and hook it up to |
| 516 | the tdata pointer in the bfd. */ |
| 517 | |
| 518 | new_tdata = ((struct elf_obj_tdata *) |
| 519 | bfd_zalloc (abfd, sizeof (struct elf_obj_tdata))); |
| 520 | if (new_tdata == NULL) |
| 521 | goto got_no_match; |
| 522 | elf_tdata (abfd) = new_tdata; |
| 523 | |
| 524 | /* Now that we know the byte order, swap in the rest of the header */ |
| 525 | i_ehdrp = elf_elfheader (abfd); |
| 526 | elf_swap_ehdr_in (abfd, &x_ehdr, i_ehdrp); |
| 527 | #if DEBUG & 1 |
| 528 | elf_debug_file (i_ehdrp); |
| 529 | #endif |
| 530 | |
| 531 | /* Reject ET_CORE (header indicates core file, not object file) */ |
| 532 | if (i_ehdrp->e_type == ET_CORE) |
| 533 | goto got_wrong_format_error; |
| 534 | |
| 535 | /* If there is no section header table, we're hosed. */ |
| 536 | if (i_ehdrp->e_shoff == 0) |
| 537 | goto got_wrong_format_error; |
| 538 | |
| 539 | /* As a simple sanity check, verify that the what BFD thinks is the |
| 540 | size of each section header table entry actually matches the size |
| 541 | recorded in the file. */ |
| 542 | if (i_ehdrp->e_shentsize != sizeof (x_shdr)) |
| 543 | goto got_wrong_format_error; |
| 544 | |
| 545 | ebd = get_elf_backend_data (abfd); |
| 546 | |
| 547 | /* Check that the ELF e_machine field matches what this particular |
| 548 | BFD format expects. */ |
| 549 | if (ebd->elf_machine_code != i_ehdrp->e_machine |
| 550 | && (ebd->elf_machine_alt1 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt1) |
| 551 | && (ebd->elf_machine_alt2 == 0 || i_ehdrp->e_machine != ebd->elf_machine_alt2)) |
| 552 | { |
| 553 | const bfd_target * const *target_ptr; |
| 554 | |
| 555 | if (ebd->elf_machine_code != EM_NONE) |
| 556 | goto got_wrong_format_error; |
| 557 | |
| 558 | /* This is the generic ELF target. Let it match any ELF target |
| 559 | for which we do not have a specific backend. */ |
| 560 | for (target_ptr = bfd_target_vector; *target_ptr != NULL; target_ptr++) |
| 561 | { |
| 562 | struct elf_backend_data *back; |
| 563 | |
| 564 | if ((*target_ptr)->flavour != bfd_target_elf_flavour) |
| 565 | continue; |
| 566 | back = (struct elf_backend_data *) (*target_ptr)->backend_data; |
| 567 | if (back->elf_machine_code == i_ehdrp->e_machine |
| 568 | || (back->elf_machine_alt1 != 0 |
| 569 | && back->elf_machine_alt1 == i_ehdrp->e_machine) |
| 570 | || (back->elf_machine_alt2 != 0 |
| 571 | && back->elf_machine_alt2 == i_ehdrp->e_machine)) |
| 572 | { |
| 573 | /* target_ptr is an ELF backend which matches this |
| 574 | object file, so reject the generic ELF target. */ |
| 575 | goto got_wrong_format_error; |
| 576 | } |
| 577 | } |
| 578 | } |
| 579 | |
| 580 | if (i_ehdrp->e_type == ET_EXEC) |
| 581 | abfd->flags |= EXEC_P; |
| 582 | else if (i_ehdrp->e_type == ET_DYN) |
| 583 | abfd->flags |= DYNAMIC; |
| 584 | |
| 585 | if (i_ehdrp->e_phnum > 0) |
| 586 | abfd->flags |= D_PAGED; |
| 587 | |
| 588 | if (! bfd_default_set_arch_mach (abfd, ebd->arch, 0)) |
| 589 | { |
| 590 | /* It's OK if this fails for the generic target. */ |
| 591 | if (ebd->elf_machine_code != EM_NONE) |
| 592 | goto got_no_match; |
| 593 | } |
| 594 | |
| 595 | /* Remember the entry point specified in the ELF file header. */ |
| 596 | bfd_get_start_address (abfd) = i_ehdrp->e_entry; |
| 597 | |
| 598 | /* Allocate space for a copy of the section header table in |
| 599 | internal form, seek to the section header table in the file, |
| 600 | read it in, and convert it to internal form. */ |
| 601 | i_shdrp = ((Elf_Internal_Shdr *) |
| 602 | bfd_alloc (abfd, sizeof (*i_shdrp) * i_ehdrp->e_shnum)); |
| 603 | elf_elfsections (abfd) = ((Elf_Internal_Shdr **) |
| 604 | bfd_alloc (abfd, |
| 605 | sizeof (i_shdrp) * i_ehdrp->e_shnum)); |
| 606 | if (!i_shdrp || !elf_elfsections (abfd)) |
| 607 | goto got_no_match; |
| 608 | if (bfd_seek (abfd, i_ehdrp->e_shoff, SEEK_SET) != 0) |
| 609 | goto got_no_match; |
| 610 | for (shindex = 0; shindex < i_ehdrp->e_shnum; shindex++) |
| 611 | { |
| 612 | if (bfd_read ((PTR) & x_shdr, sizeof x_shdr, 1, abfd) != sizeof (x_shdr)) |
| 613 | goto got_no_match; |
| 614 | elf_swap_shdr_in (abfd, &x_shdr, i_shdrp + shindex); |
| 615 | elf_elfsections (abfd)[shindex] = i_shdrp + shindex; |
| 616 | |
| 617 | /* If the section is loaded, but not page aligned, clear |
| 618 | D_PAGED. */ |
| 619 | if ((i_shdrp[shindex].sh_flags & SHF_ALLOC) != 0 |
| 620 | && i_shdrp[shindex].sh_type != SHT_NOBITS |
| 621 | && (((i_shdrp[shindex].sh_addr - i_shdrp[shindex].sh_offset) |
| 622 | % ebd->maxpagesize) |
| 623 | != 0)) |
| 624 | abfd->flags &= ~D_PAGED; |
| 625 | } |
| 626 | if (i_ehdrp->e_shstrndx) |
| 627 | { |
| 628 | if (! bfd_section_from_shdr (abfd, i_ehdrp->e_shstrndx)) |
| 629 | goto got_no_match; |
| 630 | } |
| 631 | |
| 632 | /* Read in the program headers. */ |
| 633 | if (i_ehdrp->e_phnum == 0) |
| 634 | elf_tdata (abfd)->phdr = NULL; |
| 635 | else |
| 636 | { |
| 637 | Elf_Internal_Phdr *i_phdr; |
| 638 | unsigned int i; |
| 639 | |
| 640 | elf_tdata (abfd)->phdr = ((Elf_Internal_Phdr *) |
| 641 | bfd_alloc (abfd, |
| 642 | (i_ehdrp->e_phnum |
| 643 | * sizeof (Elf_Internal_Phdr)))); |
| 644 | if (elf_tdata (abfd)->phdr == NULL) |
| 645 | goto got_no_match; |
| 646 | if (bfd_seek (abfd, i_ehdrp->e_phoff, SEEK_SET) != 0) |
| 647 | goto got_no_match; |
| 648 | i_phdr = elf_tdata (abfd)->phdr; |
| 649 | for (i = 0; i < i_ehdrp->e_phnum; i++, i_phdr++) |
| 650 | { |
| 651 | Elf_External_Phdr x_phdr; |
| 652 | |
| 653 | if (bfd_read ((PTR) &x_phdr, sizeof x_phdr, 1, abfd) |
| 654 | != sizeof x_phdr) |
| 655 | goto got_no_match; |
| 656 | elf_swap_phdr_in (abfd, &x_phdr, i_phdr); |
| 657 | } |
| 658 | } |
| 659 | |
| 660 | /* Read in the string table containing the names of the sections. We |
| 661 | will need the base pointer to this table later. */ |
| 662 | /* We read this inline now, so that we don't have to go through |
| 663 | bfd_section_from_shdr with it (since this particular strtab is |
| 664 | used to find all of the ELF section names.) */ |
| 665 | |
| 666 | shstrtab = bfd_elf_get_str_section (abfd, i_ehdrp->e_shstrndx); |
| 667 | if (!shstrtab) |
| 668 | goto got_no_match; |
| 669 | |
| 670 | /* Once all of the section headers have been read and converted, we |
| 671 | can start processing them. Note that the first section header is |
| 672 | a dummy placeholder entry, so we ignore it. */ |
| 673 | |
| 674 | for (shindex = 1; shindex < i_ehdrp->e_shnum; shindex++) |
| 675 | { |
| 676 | if (! bfd_section_from_shdr (abfd, shindex)) |
| 677 | goto got_no_match; |
| 678 | } |
| 679 | |
| 680 | /* Let the backend double check the format and override global |
| 681 | information. */ |
| 682 | if (ebd->elf_backend_object_p) |
| 683 | { |
| 684 | if ((*ebd->elf_backend_object_p) (abfd) == false) |
| 685 | goto got_wrong_format_error; |
| 686 | } |
| 687 | |
| 688 | /* If we have created any reloc sections that are associated with |
| 689 | debugging sections, mark the reloc sections as debugging as well. */ |
| 690 | for (s = abfd->sections; s != NULL; s = s->next) |
| 691 | { |
| 692 | if ((elf_section_data (s)->this_hdr.sh_type == SHT_REL |
| 693 | || elf_section_data (s)->this_hdr.sh_type == SHT_RELA) |
| 694 | && elf_section_data (s)->this_hdr.sh_info > 0) |
| 695 | { |
| 696 | unsigned long targ_index; |
| 697 | asection *targ_sec; |
| 698 | |
| 699 | targ_index = elf_section_data (s)->this_hdr.sh_info; |
| 700 | targ_sec = bfd_section_from_elf_index (abfd, targ_index); |
| 701 | if (targ_sec != NULL |
| 702 | && (targ_sec->flags & SEC_DEBUGGING) != 0) |
| 703 | s->flags |= SEC_DEBUGGING; |
| 704 | } |
| 705 | } |
| 706 | |
| 707 | return (abfd->xvec); |
| 708 | |
| 709 | got_wrong_format_error: |
| 710 | bfd_set_error (bfd_error_wrong_format); |
| 711 | got_no_match: |
| 712 | if (new_tdata != NULL |
| 713 | && new_tdata->elf_sect_ptr != NULL) |
| 714 | bfd_release (abfd, new_tdata->elf_sect_ptr); |
| 715 | if (i_shdrp != NULL) |
| 716 | bfd_release (abfd, i_shdrp); |
| 717 | if (new_tdata != NULL) |
| 718 | bfd_release (abfd, new_tdata); |
| 719 | elf_tdata (abfd) = preserved_tdata; |
| 720 | return (NULL); |
| 721 | } |
| 722 | \f |
| 723 | /* ELF .o/exec file writing */ |
| 724 | |
| 725 | /* Write out the relocs. */ |
| 726 | |
| 727 | static void |
| 728 | write_relocs (abfd, sec, data) |
| 729 | bfd *abfd; |
| 730 | asection *sec; |
| 731 | PTR data; |
| 732 | { |
| 733 | boolean *failedp = (boolean *) data; |
| 734 | Elf_Internal_Shdr *rela_hdr; |
| 735 | Elf_External_Rela *outbound_relocas; |
| 736 | Elf_External_Rel *outbound_relocs; |
| 737 | unsigned int idx; |
| 738 | int use_rela_p; |
| 739 | asymbol *last_sym = 0; |
| 740 | int last_sym_idx = 0; |
| 741 | |
| 742 | /* If we have already failed, don't do anything. */ |
| 743 | if (*failedp) |
| 744 | return; |
| 745 | |
| 746 | if ((sec->flags & SEC_RELOC) == 0) |
| 747 | return; |
| 748 | |
| 749 | /* The linker backend writes the relocs out itself, and sets the |
| 750 | reloc_count field to zero to inhibit writing them here. Also, |
| 751 | sometimes the SEC_RELOC flag gets set even when there aren't any |
| 752 | relocs. */ |
| 753 | if (sec->reloc_count == 0) |
| 754 | return; |
| 755 | |
| 756 | rela_hdr = &elf_section_data (sec)->rel_hdr; |
| 757 | |
| 758 | rela_hdr->sh_size = rela_hdr->sh_entsize * sec->reloc_count; |
| 759 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); |
| 760 | if (rela_hdr->contents == NULL) |
| 761 | { |
| 762 | *failedp = true; |
| 763 | return; |
| 764 | } |
| 765 | |
| 766 | /* Figure out whether the relocations are RELA or REL relocations. */ |
| 767 | if (rela_hdr->sh_type == SHT_RELA) |
| 768 | use_rela_p = true; |
| 769 | else if (rela_hdr->sh_type == SHT_REL) |
| 770 | use_rela_p = false; |
| 771 | else |
| 772 | /* Every relocation section should be either an SHT_RELA or an |
| 773 | SHT_REL section. */ |
| 774 | abort (); |
| 775 | |
| 776 | /* orelocation has the data, reloc_count has the count... */ |
| 777 | if (use_rela_p) |
| 778 | { |
| 779 | outbound_relocas = (Elf_External_Rela *) rela_hdr->contents; |
| 780 | |
| 781 | for (idx = 0; idx < sec->reloc_count; idx++) |
| 782 | { |
| 783 | Elf_Internal_Rela dst_rela; |
| 784 | Elf_External_Rela *src_rela; |
| 785 | arelent *ptr; |
| 786 | asymbol *sym; |
| 787 | int n; |
| 788 | |
| 789 | ptr = sec->orelocation[idx]; |
| 790 | src_rela = outbound_relocas + idx; |
| 791 | |
| 792 | /* The address of an ELF reloc is section relative for an object |
| 793 | file, and absolute for an executable file or shared library. |
| 794 | The address of a BFD reloc is always section relative. */ |
| 795 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 796 | dst_rela.r_offset = ptr->address; |
| 797 | else |
| 798 | dst_rela.r_offset = ptr->address + sec->vma; |
| 799 | |
| 800 | sym = *ptr->sym_ptr_ptr; |
| 801 | if (sym == last_sym) |
| 802 | n = last_sym_idx; |
| 803 | else if (bfd_is_abs_section (sym->section) && sym->value == 0) |
| 804 | n = STN_UNDEF; |
| 805 | else |
| 806 | { |
| 807 | last_sym = sym; |
| 808 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| 809 | if (n < 0) |
| 810 | { |
| 811 | *failedp = true; |
| 812 | return; |
| 813 | } |
| 814 | last_sym_idx = n; |
| 815 | } |
| 816 | |
| 817 | if ((*ptr->sym_ptr_ptr)->the_bfd != NULL |
| 818 | && (*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| 819 | && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| 820 | { |
| 821 | *failedp = true; |
| 822 | return; |
| 823 | } |
| 824 | |
| 825 | dst_rela.r_info = ELF_R_INFO (n, ptr->howto->type); |
| 826 | |
| 827 | dst_rela.r_addend = ptr->addend; |
| 828 | elf_swap_reloca_out (abfd, &dst_rela, src_rela); |
| 829 | } |
| 830 | } |
| 831 | else |
| 832 | /* REL relocations */ |
| 833 | { |
| 834 | outbound_relocs = (Elf_External_Rel *) rela_hdr->contents; |
| 835 | |
| 836 | for (idx = 0; idx < sec->reloc_count; idx++) |
| 837 | { |
| 838 | Elf_Internal_Rel dst_rel; |
| 839 | Elf_External_Rel *src_rel; |
| 840 | arelent *ptr; |
| 841 | int n; |
| 842 | asymbol *sym; |
| 843 | |
| 844 | ptr = sec->orelocation[idx]; |
| 845 | sym = *ptr->sym_ptr_ptr; |
| 846 | src_rel = outbound_relocs + idx; |
| 847 | |
| 848 | /* The address of an ELF reloc is section relative for an object |
| 849 | file, and absolute for an executable file or shared library. |
| 850 | The address of a BFD reloc is always section relative. */ |
| 851 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 852 | dst_rel.r_offset = ptr->address; |
| 853 | else |
| 854 | dst_rel.r_offset = ptr->address + sec->vma; |
| 855 | |
| 856 | if (sym == last_sym) |
| 857 | n = last_sym_idx; |
| 858 | else |
| 859 | { |
| 860 | last_sym = sym; |
| 861 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| 862 | if (n < 0) |
| 863 | { |
| 864 | *failedp = true; |
| 865 | return; |
| 866 | } |
| 867 | last_sym_idx = n; |
| 868 | } |
| 869 | |
| 870 | if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| 871 | && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| 872 | { |
| 873 | *failedp = true; |
| 874 | return; |
| 875 | } |
| 876 | |
| 877 | dst_rel.r_info = ELF_R_INFO (n, ptr->howto->type); |
| 878 | |
| 879 | elf_swap_reloc_out (abfd, &dst_rel, src_rel); |
| 880 | } |
| 881 | } |
| 882 | } |
| 883 | |
| 884 | /* Write out the program headers. */ |
| 885 | |
| 886 | int |
| 887 | elf_write_out_phdrs (abfd, phdr, count) |
| 888 | bfd *abfd; |
| 889 | const Elf_Internal_Phdr *phdr; |
| 890 | int count; |
| 891 | { |
| 892 | while (count--) |
| 893 | { |
| 894 | Elf_External_Phdr extphdr; |
| 895 | elf_swap_phdr_out (abfd, phdr, &extphdr); |
| 896 | if (bfd_write (&extphdr, sizeof (Elf_External_Phdr), 1, abfd) |
| 897 | != sizeof (Elf_External_Phdr)) |
| 898 | return -1; |
| 899 | phdr++; |
| 900 | } |
| 901 | return 0; |
| 902 | } |
| 903 | |
| 904 | /* Write out the section headers and the ELF file header. */ |
| 905 | |
| 906 | boolean |
| 907 | elf_write_shdrs_and_ehdr (abfd) |
| 908 | bfd *abfd; |
| 909 | { |
| 910 | Elf_External_Ehdr x_ehdr; /* Elf file header, external form */ |
| 911 | Elf_Internal_Ehdr *i_ehdrp; /* Elf file header, internal form */ |
| 912 | Elf_External_Shdr *x_shdrp; /* Section header table, external form */ |
| 913 | Elf_Internal_Shdr **i_shdrp; /* Section header table, internal form */ |
| 914 | unsigned int count; |
| 915 | |
| 916 | i_ehdrp = elf_elfheader (abfd); |
| 917 | i_shdrp = elf_elfsections (abfd); |
| 918 | |
| 919 | /* swap the header before spitting it out... */ |
| 920 | |
| 921 | #if DEBUG & 1 |
| 922 | elf_debug_file (i_ehdrp); |
| 923 | #endif |
| 924 | elf_swap_ehdr_out (abfd, i_ehdrp, &x_ehdr); |
| 925 | if (bfd_seek (abfd, (file_ptr) 0, SEEK_SET) != 0 |
| 926 | || (bfd_write ((PTR) & x_ehdr, sizeof (x_ehdr), 1, abfd) |
| 927 | != sizeof (x_ehdr))) |
| 928 | return false; |
| 929 | |
| 930 | /* at this point we've concocted all the ELF sections... */ |
| 931 | x_shdrp = (Elf_External_Shdr *) |
| 932 | bfd_alloc (abfd, sizeof (*x_shdrp) * (i_ehdrp->e_shnum)); |
| 933 | if (!x_shdrp) |
| 934 | return false; |
| 935 | |
| 936 | for (count = 0; count < i_ehdrp->e_shnum; count++) |
| 937 | { |
| 938 | #if DEBUG & 2 |
| 939 | elf_debug_section (count, i_shdrp[count]); |
| 940 | #endif |
| 941 | elf_swap_shdr_out (abfd, i_shdrp[count], x_shdrp + count); |
| 942 | } |
| 943 | if (bfd_seek (abfd, (file_ptr) i_ehdrp->e_shoff, SEEK_SET) != 0 |
| 944 | || (bfd_write ((PTR) x_shdrp, sizeof (*x_shdrp), i_ehdrp->e_shnum, abfd) |
| 945 | != sizeof (*x_shdrp) * i_ehdrp->e_shnum)) |
| 946 | return false; |
| 947 | |
| 948 | /* need to dump the string table too... */ |
| 949 | |
| 950 | return true; |
| 951 | } |
| 952 | |
| 953 | long |
| 954 | elf_slurp_symbol_table (abfd, symptrs, dynamic) |
| 955 | bfd *abfd; |
| 956 | asymbol **symptrs; /* Buffer for generated bfd symbols */ |
| 957 | boolean dynamic; |
| 958 | { |
| 959 | Elf_Internal_Shdr *hdr; |
| 960 | Elf_Internal_Shdr *verhdr; |
| 961 | unsigned long symcount; /* Number of external ELF symbols */ |
| 962 | elf_symbol_type *sym; /* Pointer to current bfd symbol */ |
| 963 | elf_symbol_type *symbase; /* Buffer for generated bfd symbols */ |
| 964 | Elf_Internal_Sym i_sym; |
| 965 | Elf_External_Sym *x_symp = NULL; |
| 966 | Elf_External_Versym *x_versymp = NULL; |
| 967 | |
| 968 | /* Read each raw ELF symbol, converting from external ELF form to |
| 969 | internal ELF form, and then using the information to create a |
| 970 | canonical bfd symbol table entry. |
| 971 | |
| 972 | Note that we allocate the initial bfd canonical symbol buffer |
| 973 | based on a one-to-one mapping of the ELF symbols to canonical |
| 974 | symbols. We actually use all the ELF symbols, so there will be no |
| 975 | space left over at the end. When we have all the symbols, we |
| 976 | build the caller's pointer vector. */ |
| 977 | |
| 978 | if (! dynamic) |
| 979 | { |
| 980 | hdr = &elf_tdata (abfd)->symtab_hdr; |
| 981 | verhdr = NULL; |
| 982 | } |
| 983 | else |
| 984 | { |
| 985 | hdr = &elf_tdata (abfd)->dynsymtab_hdr; |
| 986 | if (elf_dynversym (abfd) == 0) |
| 987 | verhdr = NULL; |
| 988 | else |
| 989 | verhdr = &elf_tdata (abfd)->dynversym_hdr; |
| 990 | if ((elf_tdata (abfd)->dynverdef_section != 0 |
| 991 | && elf_tdata (abfd)->verdef == NULL) |
| 992 | || (elf_tdata (abfd)->dynverref_section != 0 |
| 993 | && elf_tdata (abfd)->verref == NULL)) |
| 994 | { |
| 995 | if (! _bfd_elf_slurp_version_tables (abfd)) |
| 996 | return -1; |
| 997 | } |
| 998 | } |
| 999 | |
| 1000 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1) |
| 1001 | return -1; |
| 1002 | |
| 1003 | symcount = hdr->sh_size / sizeof (Elf_External_Sym); |
| 1004 | |
| 1005 | if (symcount == 0) |
| 1006 | sym = symbase = NULL; |
| 1007 | else |
| 1008 | { |
| 1009 | unsigned long i; |
| 1010 | |
| 1011 | if (bfd_seek (abfd, hdr->sh_offset, SEEK_SET) == -1) |
| 1012 | return -1; |
| 1013 | |
| 1014 | symbase = ((elf_symbol_type *) |
| 1015 | bfd_zalloc (abfd, symcount * sizeof (elf_symbol_type))); |
| 1016 | if (symbase == (elf_symbol_type *) NULL) |
| 1017 | return -1; |
| 1018 | sym = symbase; |
| 1019 | |
| 1020 | /* Temporarily allocate room for the raw ELF symbols. */ |
| 1021 | x_symp = ((Elf_External_Sym *) |
| 1022 | bfd_malloc (symcount * sizeof (Elf_External_Sym))); |
| 1023 | if (x_symp == NULL && symcount != 0) |
| 1024 | goto error_return; |
| 1025 | |
| 1026 | if (bfd_read ((PTR) x_symp, sizeof (Elf_External_Sym), symcount, abfd) |
| 1027 | != symcount * sizeof (Elf_External_Sym)) |
| 1028 | goto error_return; |
| 1029 | |
| 1030 | /* Read the raw ELF version symbol information. */ |
| 1031 | |
| 1032 | if (verhdr != NULL |
| 1033 | && verhdr->sh_size / sizeof (Elf_External_Versym) != symcount) |
| 1034 | { |
| 1035 | (*_bfd_error_handler) |
| 1036 | (_("%s: version count (%ld) does not match symbol count (%ld)"), |
| 1037 | abfd->filename, |
| 1038 | (long) (verhdr->sh_size / sizeof (Elf_External_Versym)), |
| 1039 | symcount); |
| 1040 | |
| 1041 | /* Slurp in the symbols without the version information, |
| 1042 | since that is more helpful than just quitting. */ |
| 1043 | verhdr = NULL; |
| 1044 | } |
| 1045 | |
| 1046 | if (verhdr != NULL) |
| 1047 | { |
| 1048 | if (bfd_seek (abfd, verhdr->sh_offset, SEEK_SET) != 0) |
| 1049 | goto error_return; |
| 1050 | |
| 1051 | x_versymp = (Elf_External_Versym *) bfd_malloc (verhdr->sh_size); |
| 1052 | if (x_versymp == NULL && verhdr->sh_size != 0) |
| 1053 | goto error_return; |
| 1054 | |
| 1055 | if (bfd_read ((PTR) x_versymp, 1, verhdr->sh_size, abfd) |
| 1056 | != verhdr->sh_size) |
| 1057 | goto error_return; |
| 1058 | } |
| 1059 | |
| 1060 | /* Skip first symbol, which is a null dummy. */ |
| 1061 | for (i = 1; i < symcount; i++) |
| 1062 | { |
| 1063 | elf_swap_symbol_in (abfd, x_symp + i, &i_sym); |
| 1064 | memcpy (&sym->internal_elf_sym, &i_sym, sizeof (Elf_Internal_Sym)); |
| 1065 | #ifdef ELF_KEEP_EXTSYM |
| 1066 | memcpy (&sym->native_elf_sym, x_symp + i, sizeof (Elf_External_Sym)); |
| 1067 | #endif |
| 1068 | sym->symbol.the_bfd = abfd; |
| 1069 | |
| 1070 | sym->symbol.name = bfd_elf_string_from_elf_section (abfd, |
| 1071 | hdr->sh_link, |
| 1072 | i_sym.st_name); |
| 1073 | |
| 1074 | sym->symbol.value = i_sym.st_value; |
| 1075 | |
| 1076 | if (i_sym.st_shndx > 0 && i_sym.st_shndx < SHN_LORESERVE) |
| 1077 | { |
| 1078 | sym->symbol.section = section_from_elf_index (abfd, |
| 1079 | i_sym.st_shndx); |
| 1080 | if (sym->symbol.section == NULL) |
| 1081 | { |
| 1082 | /* This symbol is in a section for which we did not |
| 1083 | create a BFD section. Just use bfd_abs_section, |
| 1084 | although it is wrong. FIXME. */ |
| 1085 | sym->symbol.section = bfd_abs_section_ptr; |
| 1086 | } |
| 1087 | } |
| 1088 | else if (i_sym.st_shndx == SHN_ABS) |
| 1089 | { |
| 1090 | sym->symbol.section = bfd_abs_section_ptr; |
| 1091 | } |
| 1092 | else if (i_sym.st_shndx == SHN_COMMON) |
| 1093 | { |
| 1094 | sym->symbol.section = bfd_com_section_ptr; |
| 1095 | /* Elf puts the alignment into the `value' field, and |
| 1096 | the size into the `size' field. BFD wants to see the |
| 1097 | size in the value field, and doesn't care (at the |
| 1098 | moment) about the alignment. */ |
| 1099 | sym->symbol.value = i_sym.st_size; |
| 1100 | } |
| 1101 | else if (i_sym.st_shndx == SHN_UNDEF) |
| 1102 | { |
| 1103 | sym->symbol.section = bfd_und_section_ptr; |
| 1104 | } |
| 1105 | else |
| 1106 | sym->symbol.section = bfd_abs_section_ptr; |
| 1107 | |
| 1108 | /* If this is a relocateable file, then the symbol value is |
| 1109 | already section relative. */ |
| 1110 | if ((abfd->flags & (EXEC_P | DYNAMIC)) != 0) |
| 1111 | sym->symbol.value -= sym->symbol.section->vma; |
| 1112 | |
| 1113 | switch (ELF_ST_BIND (i_sym.st_info)) |
| 1114 | { |
| 1115 | case STB_LOCAL: |
| 1116 | sym->symbol.flags |= BSF_LOCAL; |
| 1117 | break; |
| 1118 | case STB_GLOBAL: |
| 1119 | if (i_sym.st_shndx != SHN_UNDEF |
| 1120 | && i_sym.st_shndx != SHN_COMMON) |
| 1121 | sym->symbol.flags |= BSF_GLOBAL; |
| 1122 | break; |
| 1123 | case STB_WEAK: |
| 1124 | sym->symbol.flags |= BSF_WEAK; |
| 1125 | break; |
| 1126 | } |
| 1127 | |
| 1128 | switch (ELF_ST_TYPE (i_sym.st_info)) |
| 1129 | { |
| 1130 | case STT_SECTION: |
| 1131 | sym->symbol.flags |= BSF_SECTION_SYM | BSF_DEBUGGING; |
| 1132 | break; |
| 1133 | case STT_FILE: |
| 1134 | sym->symbol.flags |= BSF_FILE | BSF_DEBUGGING; |
| 1135 | break; |
| 1136 | case STT_FUNC: |
| 1137 | sym->symbol.flags |= BSF_FUNCTION; |
| 1138 | break; |
| 1139 | case STT_OBJECT: |
| 1140 | sym->symbol.flags |= BSF_OBJECT; |
| 1141 | break; |
| 1142 | } |
| 1143 | |
| 1144 | if (dynamic) |
| 1145 | sym->symbol.flags |= BSF_DYNAMIC; |
| 1146 | |
| 1147 | if (x_versymp != NULL) |
| 1148 | { |
| 1149 | Elf_Internal_Versym iversym; |
| 1150 | |
| 1151 | _bfd_elf_swap_versym_in (abfd, x_versymp + i, &iversym); |
| 1152 | sym->version = iversym.vs_vers; |
| 1153 | } |
| 1154 | |
| 1155 | /* Do some backend-specific processing on this symbol. */ |
| 1156 | { |
| 1157 | struct elf_backend_data *ebd = get_elf_backend_data (abfd); |
| 1158 | if (ebd->elf_backend_symbol_processing) |
| 1159 | (*ebd->elf_backend_symbol_processing) (abfd, &sym->symbol); |
| 1160 | } |
| 1161 | |
| 1162 | sym++; |
| 1163 | } |
| 1164 | } |
| 1165 | |
| 1166 | /* Do some backend-specific processing on this symbol table. */ |
| 1167 | { |
| 1168 | struct elf_backend_data *ebd = get_elf_backend_data (abfd); |
| 1169 | if (ebd->elf_backend_symbol_table_processing) |
| 1170 | (*ebd->elf_backend_symbol_table_processing) (abfd, symbase, symcount); |
| 1171 | } |
| 1172 | |
| 1173 | /* We rely on the zalloc to clear out the final symbol entry. */ |
| 1174 | |
| 1175 | symcount = sym - symbase; |
| 1176 | |
| 1177 | /* Fill in the user's symbol pointer vector if needed. */ |
| 1178 | if (symptrs) |
| 1179 | { |
| 1180 | long l = symcount; |
| 1181 | |
| 1182 | sym = symbase; |
| 1183 | while (l-- > 0) |
| 1184 | { |
| 1185 | *symptrs++ = &sym->symbol; |
| 1186 | sym++; |
| 1187 | } |
| 1188 | *symptrs = 0; /* Final null pointer */ |
| 1189 | } |
| 1190 | |
| 1191 | if (x_versymp != NULL) |
| 1192 | free (x_versymp); |
| 1193 | if (x_symp != NULL) |
| 1194 | free (x_symp); |
| 1195 | return symcount; |
| 1196 | error_return: |
| 1197 | if (x_versymp != NULL) |
| 1198 | free (x_versymp); |
| 1199 | if (x_symp != NULL) |
| 1200 | free (x_symp); |
| 1201 | return -1; |
| 1202 | } |
| 1203 | |
| 1204 | /* Read relocations for ASECT from REL_HDR. There are RELOC_COUNT of |
| 1205 | them. */ |
| 1206 | |
| 1207 | static boolean |
| 1208 | elf_slurp_reloc_table_from_section (abfd, asect, rel_hdr, reloc_count, |
| 1209 | relents, symbols, dynamic) |
| 1210 | bfd *abfd; |
| 1211 | asection *asect; |
| 1212 | Elf_Internal_Shdr *rel_hdr; |
| 1213 | bfd_size_type reloc_count; |
| 1214 | arelent *relents; |
| 1215 | asymbol **symbols; |
| 1216 | boolean dynamic; |
| 1217 | { |
| 1218 | struct elf_backend_data * const ebd = get_elf_backend_data (abfd); |
| 1219 | PTR allocated = NULL; |
| 1220 | bfd_byte *native_relocs; |
| 1221 | arelent *relent; |
| 1222 | unsigned int i; |
| 1223 | int entsize; |
| 1224 | |
| 1225 | allocated = (PTR) bfd_malloc ((size_t) rel_hdr->sh_size); |
| 1226 | if (allocated == NULL) |
| 1227 | goto error_return; |
| 1228 | |
| 1229 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 |
| 1230 | || (bfd_read (allocated, 1, rel_hdr->sh_size, abfd) |
| 1231 | != rel_hdr->sh_size)) |
| 1232 | goto error_return; |
| 1233 | |
| 1234 | native_relocs = (bfd_byte *) allocated; |
| 1235 | |
| 1236 | entsize = rel_hdr->sh_entsize; |
| 1237 | BFD_ASSERT (entsize == sizeof (Elf_External_Rel) |
| 1238 | || entsize == sizeof (Elf_External_Rela)); |
| 1239 | |
| 1240 | for (i = 0, relent = relents; |
| 1241 | i < reloc_count; |
| 1242 | i++, relent++, native_relocs += entsize) |
| 1243 | { |
| 1244 | Elf_Internal_Rela rela; |
| 1245 | Elf_Internal_Rel rel; |
| 1246 | |
| 1247 | if (entsize == sizeof (Elf_External_Rela)) |
| 1248 | elf_swap_reloca_in (abfd, (Elf_External_Rela *) native_relocs, &rela); |
| 1249 | else |
| 1250 | { |
| 1251 | elf_swap_reloc_in (abfd, (Elf_External_Rel *) native_relocs, &rel); |
| 1252 | rela.r_offset = rel.r_offset; |
| 1253 | rela.r_info = rel.r_info; |
| 1254 | rela.r_addend = 0; |
| 1255 | } |
| 1256 | |
| 1257 | /* The address of an ELF reloc is section relative for an object |
| 1258 | file, and absolute for an executable file or shared library. |
| 1259 | The address of a normal BFD reloc is always section relative, |
| 1260 | and the address of a dynamic reloc is absolute.. */ |
| 1261 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0 || dynamic) |
| 1262 | relent->address = rela.r_offset; |
| 1263 | else |
| 1264 | relent->address = rela.r_offset - asect->vma; |
| 1265 | |
| 1266 | if (ELF_R_SYM (rela.r_info) == 0) |
| 1267 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 1268 | else |
| 1269 | { |
| 1270 | asymbol **ps, *s; |
| 1271 | |
| 1272 | ps = symbols + ELF_R_SYM (rela.r_info) - 1; |
| 1273 | s = *ps; |
| 1274 | |
| 1275 | /* Canonicalize ELF section symbols. FIXME: Why? */ |
| 1276 | if ((s->flags & BSF_SECTION_SYM) == 0) |
| 1277 | relent->sym_ptr_ptr = ps; |
| 1278 | else |
| 1279 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; |
| 1280 | } |
| 1281 | |
| 1282 | relent->addend = rela.r_addend; |
| 1283 | |
| 1284 | if (entsize == sizeof (Elf_External_Rela)) |
| 1285 | (*ebd->elf_info_to_howto) (abfd, relent, &rela); |
| 1286 | else |
| 1287 | (*ebd->elf_info_to_howto_rel) (abfd, relent, &rel); |
| 1288 | } |
| 1289 | |
| 1290 | if (allocated != NULL) |
| 1291 | free (allocated); |
| 1292 | |
| 1293 | return true; |
| 1294 | |
| 1295 | error_return: |
| 1296 | if (allocated != NULL) |
| 1297 | free (allocated); |
| 1298 | return false; |
| 1299 | } |
| 1300 | |
| 1301 | /* Read in and swap the external relocs. */ |
| 1302 | |
| 1303 | static boolean |
| 1304 | elf_slurp_reloc_table (abfd, asect, symbols, dynamic) |
| 1305 | bfd *abfd; |
| 1306 | asection *asect; |
| 1307 | asymbol **symbols; |
| 1308 | boolean dynamic; |
| 1309 | { |
| 1310 | struct bfd_elf_section_data * const d = elf_section_data (asect); |
| 1311 | Elf_Internal_Shdr *rel_hdr; |
| 1312 | Elf_Internal_Shdr *rel_hdr2; |
| 1313 | bfd_size_type reloc_count; |
| 1314 | bfd_size_type reloc_count2; |
| 1315 | arelent *relents; |
| 1316 | |
| 1317 | if (asect->relocation != NULL) |
| 1318 | return true; |
| 1319 | |
| 1320 | if (! dynamic) |
| 1321 | { |
| 1322 | if ((asect->flags & SEC_RELOC) == 0 |
| 1323 | || asect->reloc_count == 0) |
| 1324 | return true; |
| 1325 | |
| 1326 | rel_hdr = &d->rel_hdr; |
| 1327 | reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize; |
| 1328 | rel_hdr2 = d->rel_hdr2; |
| 1329 | reloc_count2 = (rel_hdr2 |
| 1330 | ? (rel_hdr2->sh_size / rel_hdr2->sh_entsize) |
| 1331 | : 0); |
| 1332 | |
| 1333 | BFD_ASSERT (asect->reloc_count == reloc_count + reloc_count2); |
| 1334 | BFD_ASSERT (asect->rel_filepos == rel_hdr->sh_offset |
| 1335 | || (rel_hdr2 && asect->rel_filepos == rel_hdr2->sh_offset)); |
| 1336 | |
| 1337 | } |
| 1338 | else |
| 1339 | { |
| 1340 | /* Note that ASECT->RELOC_COUNT tends not to be accurate in this |
| 1341 | case because relocations against this section may use the |
| 1342 | dynamic symbol table, and in that case bfd_section_from_shdr |
| 1343 | in elf.c does not update the RELOC_COUNT. */ |
| 1344 | if (asect->_raw_size == 0) |
| 1345 | return true; |
| 1346 | |
| 1347 | rel_hdr = &d->this_hdr; |
| 1348 | reloc_count = rel_hdr->sh_size / rel_hdr->sh_entsize; |
| 1349 | rel_hdr2 = NULL; |
| 1350 | reloc_count2 = 0; |
| 1351 | } |
| 1352 | |
| 1353 | relents = ((arelent *) |
| 1354 | bfd_alloc (abfd, |
| 1355 | (reloc_count + reloc_count2) * sizeof (arelent))); |
| 1356 | if (relents == NULL) |
| 1357 | return false; |
| 1358 | |
| 1359 | if (!elf_slurp_reloc_table_from_section (abfd, asect, |
| 1360 | rel_hdr, reloc_count, |
| 1361 | relents, |
| 1362 | symbols, dynamic)) |
| 1363 | return false; |
| 1364 | |
| 1365 | if (rel_hdr2 |
| 1366 | && !elf_slurp_reloc_table_from_section (abfd, asect, |
| 1367 | rel_hdr2, reloc_count2, |
| 1368 | relents + reloc_count, |
| 1369 | symbols, dynamic)) |
| 1370 | return false; |
| 1371 | |
| 1372 | |
| 1373 | asect->relocation = relents; |
| 1374 | return true; |
| 1375 | } |
| 1376 | |
| 1377 | #ifdef DEBUG |
| 1378 | static void |
| 1379 | elf_debug_section (num, hdr) |
| 1380 | int num; |
| 1381 | Elf_Internal_Shdr *hdr; |
| 1382 | { |
| 1383 | fprintf (stderr, "\nSection#%d '%s' 0x%.8lx\n", num, |
| 1384 | hdr->bfd_section != NULL ? hdr->bfd_section->name : "", |
| 1385 | (long) hdr); |
| 1386 | fprintf (stderr, |
| 1387 | "sh_name = %ld\tsh_type = %ld\tsh_flags = %ld\n", |
| 1388 | (long) hdr->sh_name, |
| 1389 | (long) hdr->sh_type, |
| 1390 | (long) hdr->sh_flags); |
| 1391 | fprintf (stderr, |
| 1392 | "sh_addr = %ld\tsh_offset = %ld\tsh_size = %ld\n", |
| 1393 | (long) hdr->sh_addr, |
| 1394 | (long) hdr->sh_offset, |
| 1395 | (long) hdr->sh_size); |
| 1396 | fprintf (stderr, |
| 1397 | "sh_link = %ld\tsh_info = %ld\tsh_addralign = %ld\n", |
| 1398 | (long) hdr->sh_link, |
| 1399 | (long) hdr->sh_info, |
| 1400 | (long) hdr->sh_addralign); |
| 1401 | fprintf (stderr, "sh_entsize = %ld\n", |
| 1402 | (long) hdr->sh_entsize); |
| 1403 | fflush (stderr); |
| 1404 | } |
| 1405 | |
| 1406 | static void |
| 1407 | elf_debug_file (ehdrp) |
| 1408 | Elf_Internal_Ehdr *ehdrp; |
| 1409 | { |
| 1410 | fprintf (stderr, "e_entry = 0x%.8lx\n", (long) ehdrp->e_entry); |
| 1411 | fprintf (stderr, "e_phoff = %ld\n", (long) ehdrp->e_phoff); |
| 1412 | fprintf (stderr, "e_phnum = %ld\n", (long) ehdrp->e_phnum); |
| 1413 | fprintf (stderr, "e_phentsize = %ld\n", (long) ehdrp->e_phentsize); |
| 1414 | fprintf (stderr, "e_shoff = %ld\n", (long) ehdrp->e_shoff); |
| 1415 | fprintf (stderr, "e_shnum = %ld\n", (long) ehdrp->e_shnum); |
| 1416 | fprintf (stderr, "e_shentsize = %ld\n", (long) ehdrp->e_shentsize); |
| 1417 | } |
| 1418 | |
| 1419 | static char * |
| 1420 | elf_symbol_flags (flags) |
| 1421 | flagword flags; |
| 1422 | { |
| 1423 | static char buffer[1024]; |
| 1424 | |
| 1425 | buffer[0] = '\0'; |
| 1426 | if (flags & BSF_LOCAL) |
| 1427 | strcat (buffer, " local"); |
| 1428 | |
| 1429 | if (flags & BSF_GLOBAL) |
| 1430 | strcat (buffer, " global"); |
| 1431 | |
| 1432 | if (flags & BSF_DEBUGGING) |
| 1433 | strcat (buffer, " debug"); |
| 1434 | |
| 1435 | if (flags & BSF_FUNCTION) |
| 1436 | strcat (buffer, " function"); |
| 1437 | |
| 1438 | if (flags & BSF_KEEP) |
| 1439 | strcat (buffer, " keep"); |
| 1440 | |
| 1441 | if (flags & BSF_KEEP_G) |
| 1442 | strcat (buffer, " keep_g"); |
| 1443 | |
| 1444 | if (flags & BSF_WEAK) |
| 1445 | strcat (buffer, " weak"); |
| 1446 | |
| 1447 | if (flags & BSF_SECTION_SYM) |
| 1448 | strcat (buffer, " section-sym"); |
| 1449 | |
| 1450 | if (flags & BSF_OLD_COMMON) |
| 1451 | strcat (buffer, " old-common"); |
| 1452 | |
| 1453 | if (flags & BSF_NOT_AT_END) |
| 1454 | strcat (buffer, " not-at-end"); |
| 1455 | |
| 1456 | if (flags & BSF_CONSTRUCTOR) |
| 1457 | strcat (buffer, " constructor"); |
| 1458 | |
| 1459 | if (flags & BSF_WARNING) |
| 1460 | strcat (buffer, " warning"); |
| 1461 | |
| 1462 | if (flags & BSF_INDIRECT) |
| 1463 | strcat (buffer, " indirect"); |
| 1464 | |
| 1465 | if (flags & BSF_FILE) |
| 1466 | strcat (buffer, " file"); |
| 1467 | |
| 1468 | if (flags & DYNAMIC) |
| 1469 | strcat (buffer, " dynamic"); |
| 1470 | |
| 1471 | if (flags & ~(BSF_LOCAL |
| 1472 | | BSF_GLOBAL |
| 1473 | | BSF_DEBUGGING |
| 1474 | | BSF_FUNCTION |
| 1475 | | BSF_KEEP |
| 1476 | | BSF_KEEP_G |
| 1477 | | BSF_WEAK |
| 1478 | | BSF_SECTION_SYM |
| 1479 | | BSF_OLD_COMMON |
| 1480 | | BSF_NOT_AT_END |
| 1481 | | BSF_CONSTRUCTOR |
| 1482 | | BSF_WARNING |
| 1483 | | BSF_INDIRECT |
| 1484 | | BSF_FILE |
| 1485 | | BSF_DYNAMIC)) |
| 1486 | strcat (buffer, " unknown-bits"); |
| 1487 | |
| 1488 | return buffer; |
| 1489 | } |
| 1490 | #endif |
| 1491 | \f |
| 1492 | #include "elfcore.h" |
| 1493 | #include "elflink.h" |
| 1494 | \f |
| 1495 | /* Size-dependent data and functions. */ |
| 1496 | const struct elf_size_info NAME(_bfd_elf,size_info) = { |
| 1497 | sizeof (Elf_External_Ehdr), |
| 1498 | sizeof (Elf_External_Phdr), |
| 1499 | sizeof (Elf_External_Shdr), |
| 1500 | sizeof (Elf_External_Rel), |
| 1501 | sizeof (Elf_External_Rela), |
| 1502 | sizeof (Elf_External_Sym), |
| 1503 | sizeof (Elf_External_Dyn), |
| 1504 | sizeof (Elf_External_Note), |
| 1505 | ARCH_SIZE / 8, |
| 1506 | 1, |
| 1507 | ARCH_SIZE, FILE_ALIGN, |
| 1508 | ELFCLASS, EV_CURRENT, |
| 1509 | elf_write_out_phdrs, |
| 1510 | elf_write_shdrs_and_ehdr, |
| 1511 | write_relocs, |
| 1512 | elf_swap_symbol_out, |
| 1513 | elf_slurp_reloc_table, |
| 1514 | elf_slurp_symbol_table, |
| 1515 | elf_swap_dyn_in, |
| 1516 | elf_swap_dyn_out, |
| 1517 | NULL, |
| 1518 | NULL, |
| 1519 | NULL, |
| 1520 | NULL |
| 1521 | }; |