| 1 | /* MIPS-specific support for 64-bit ELF |
| 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
| 3 | Free Software Foundation, Inc. |
| 4 | Ian Lance Taylor, Cygnus Support |
| 5 | Linker support added by Mark Mitchell, CodeSourcery, LLC. |
| 6 | <mark@codesourcery.com> |
| 7 | |
| 8 | This file is part of BFD, the Binary File Descriptor library. |
| 9 | |
| 10 | This program is free software; you can redistribute it and/or modify |
| 11 | it under the terms of the GNU General Public License as published by |
| 12 | the Free Software Foundation; either version 2 of the License, or |
| 13 | (at your option) any later version. |
| 14 | |
| 15 | This program is distributed in the hope that it will be useful, |
| 16 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 17 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 18 | GNU General Public License for more details. |
| 19 | |
| 20 | You should have received a copy of the GNU General Public License |
| 21 | along with this program; if not, write to the Free Software |
| 22 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 23 | |
| 24 | /* This file supports the 64-bit MIPS ELF ABI. |
| 25 | |
| 26 | The MIPS 64-bit ELF ABI uses an unusual reloc format. This file |
| 27 | overrides the usual ELF reloc handling, and handles reading and |
| 28 | writing the relocations here. */ |
| 29 | |
| 30 | /* TODO: Many things are unsupported, even if there is some code for it |
| 31 | . (which was mostly stolen from elf32-mips.c and slightly adapted). |
| 32 | . |
| 33 | . - Relocation handling for REL relocs is wrong in many cases and |
| 34 | . generally untested. |
| 35 | . - Relocation handling for RELA relocs related to GOT support are |
| 36 | . also likely to be wrong. |
| 37 | . - Support for MIPS16 is only partially implemented. |
| 38 | . - Embedded PIC is only partially implemented (is it needed?). |
| 39 | . - Combined relocs with RSS_* entries are unsupported. |
| 40 | . - The whole GOT handling for NewABI is missing, some parts of |
| 41 | . the OldABI version is still lying around and shold be removed. |
| 42 | */ |
| 43 | |
| 44 | #include "bfd.h" |
| 45 | #include "sysdep.h" |
| 46 | #include "libbfd.h" |
| 47 | #include "aout/ar.h" |
| 48 | #include "bfdlink.h" |
| 49 | #include "genlink.h" |
| 50 | #include "elf-bfd.h" |
| 51 | #include "elf/mips.h" |
| 52 | |
| 53 | /* Get the ECOFF swapping routines. The 64-bit ABI is not supposed to |
| 54 | use ECOFF. However, we support it anyhow for an easier changeover. */ |
| 55 | #include "coff/sym.h" |
| 56 | #include "coff/symconst.h" |
| 57 | #include "coff/internal.h" |
| 58 | #include "coff/ecoff.h" |
| 59 | /* The 64 bit versions of the mdebug data structures are in alpha.h. */ |
| 60 | #include "coff/alpha.h" |
| 61 | #define ECOFF_SIGNED_64 |
| 62 | #include "ecoffswap.h" |
| 63 | |
| 64 | struct mips_elf64_link_hash_entry; |
| 65 | |
| 66 | static void mips_elf64_swap_reloc_in |
| 67 | PARAMS ((bfd *, const Elf64_Mips_External_Rel *, |
| 68 | Elf64_Mips_Internal_Rel *)); |
| 69 | static void mips_elf64_swap_reloca_in |
| 70 | PARAMS ((bfd *, const Elf64_Mips_External_Rela *, |
| 71 | Elf64_Mips_Internal_Rela *)); |
| 72 | static void mips_elf64_swap_reloc_out |
| 73 | PARAMS ((bfd *, const Elf64_Mips_Internal_Rel *, |
| 74 | Elf64_Mips_External_Rel *)); |
| 75 | static void mips_elf64_swap_reloca_out |
| 76 | PARAMS ((bfd *, const Elf64_Mips_Internal_Rela *, |
| 77 | Elf64_Mips_External_Rela *)); |
| 78 | static void mips_elf64_be_swap_reloc_in |
| 79 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rel *)); |
| 80 | static void mips_elf64_be_swap_reloc_out |
| 81 | PARAMS ((bfd *, const Elf_Internal_Rel *, bfd_byte *)); |
| 82 | static void mips_elf64_be_swap_reloca_in |
| 83 | PARAMS ((bfd *, const bfd_byte *, Elf_Internal_Rela *)); |
| 84 | static void mips_elf64_be_swap_reloca_out |
| 85 | PARAMS ((bfd *, const Elf_Internal_Rela *, bfd_byte *)); |
| 86 | static bfd_vma mips_elf64_high PARAMS ((bfd_vma)); |
| 87 | static bfd_vma mips_elf64_higher PARAMS ((bfd_vma)); |
| 88 | static bfd_vma mips_elf64_highest PARAMS ((bfd_vma)); |
| 89 | static reloc_howto_type *mips_elf64_reloc_type_lookup |
| 90 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 91 | static void mips_elf64_info_to_howto_rel |
| 92 | PARAMS ((bfd *, arelent *, Elf64_Internal_Rel *)); |
| 93 | static void mips_elf64_info_to_howto_rela |
| 94 | PARAMS ((bfd *, arelent *, Elf64_Internal_Rela *)); |
| 95 | static long mips_elf64_get_reloc_upper_bound PARAMS ((bfd *, asection *)); |
| 96 | static boolean mips_elf64_slurp_one_reloc_table |
| 97 | PARAMS ((bfd *, asection *, asymbol **, const Elf_Internal_Shdr *)); |
| 98 | static boolean mips_elf64_slurp_reloc_table |
| 99 | PARAMS ((bfd *, asection *, asymbol **, boolean)); |
| 100 | static void mips_elf64_write_relocs PARAMS ((bfd *, asection *, PTR)); |
| 101 | static void mips_elf64_write_rel |
| 102 | PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); |
| 103 | static void mips_elf64_write_rela |
| 104 | PARAMS((bfd *, asection *, Elf_Internal_Shdr *, int *, PTR)); |
| 105 | static struct bfd_hash_entry *mips_elf64_link_hash_newfunc |
| 106 | PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 107 | static bfd_reloc_status_type mips_elf64_hi16_reloc |
| 108 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 109 | static bfd_reloc_status_type mips_elf64_higher_reloc |
| 110 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 111 | static bfd_reloc_status_type mips_elf64_highest_reloc |
| 112 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 113 | static bfd_reloc_status_type mips_elf64_gprel16_reloc |
| 114 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 115 | static bfd_reloc_status_type mips_elf64_gprel16_reloca |
| 116 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 117 | static bfd_reloc_status_type mips_elf64_literal_reloc |
| 118 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 119 | static bfd_reloc_status_type mips_elf64_gprel32_reloc |
| 120 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 121 | static bfd_reloc_status_type mips_elf64_shift6_reloc |
| 122 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 123 | static bfd_reloc_status_type mips_elf64_got16_reloc |
| 124 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 125 | static boolean mips_elf64_assign_gp PARAMS ((bfd *, bfd_vma *)); |
| 126 | static bfd_reloc_status_type mips_elf64_final_gp |
| 127 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); |
| 128 | static bfd_reloc_status_type gprel16_with_gp |
| 129 | PARAMS ((bfd *, asymbol *, arelent *, asection *, boolean, PTR, bfd_vma)); |
| 130 | static int mips_elf64_additional_program_headers PARAMS ((bfd *)); |
| 131 | static struct bfd_link_hash_table *mips_elf64_link_hash_table_create |
| 132 | PARAMS((bfd *)); |
| 133 | static bfd_vma mips_elf64_got_offset_from_index |
| 134 | PARAMS ((bfd *, bfd *, bfd_vma)); |
| 135 | static struct mips_elf64_got_info *_mips_elf64_got_info |
| 136 | PARAMS ((bfd *, asection **)); |
| 137 | static bfd_vma mips_elf64_sign_extend PARAMS ((bfd_vma, int)); |
| 138 | static boolean mips_elf64_overflow_p PARAMS ((bfd_vma, int)); |
| 139 | static bfd_vma mips_elf64_global_got_index |
| 140 | PARAMS ((bfd *, struct elf_link_hash_entry *)); |
| 141 | static boolean mips_elf64_sort_hash_table_f |
| 142 | PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); |
| 143 | static boolean mips_elf64_sort_hash_table |
| 144 | PARAMS ((struct bfd_link_info *, unsigned long)); |
| 145 | static void mips_elf64_swap_msym_out |
| 146 | PARAMS ((bfd *, const Elf32_Internal_Msym *, Elf32_External_Msym *)); |
| 147 | static bfd_vma mips_elf64_create_local_got_entry |
| 148 | PARAMS ((bfd *abfd, struct mips_elf64_got_info *, asection *, |
| 149 | bfd_vma value)); |
| 150 | static bfd_vma mips_elf64_local_got_index |
| 151 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma)); |
| 152 | static bfd_vma mips_elf64_got_page |
| 153 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, bfd_vma *)); |
| 154 | static bfd_vma mips_elf64_got16_entry |
| 155 | PARAMS ((bfd *, struct bfd_link_info *, bfd_vma, boolean)); |
| 156 | static boolean mips_elf64_local_relocation_p |
| 157 | PARAMS ((bfd *, const Elf_Internal_Rela *, asection **, boolean)); |
| 158 | static const Elf_Internal_Rela *mips_elf64_next_relocation |
| 159 | PARAMS ((unsigned int, const Elf_Internal_Rela *, |
| 160 | const Elf_Internal_Rela *)); |
| 161 | static boolean mips_elf64_create_dynamic_relocation |
| 162 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Rela *, |
| 163 | struct mips_elf64_link_hash_entry *, asection *, bfd_vma, |
| 164 | bfd_vma *, asection *)); |
| 165 | static bfd_reloc_status_type mips_elf64_calculate_relocation |
| 166 | PARAMS ((bfd *, bfd *, asection *, struct bfd_link_info *, |
| 167 | const Elf_Internal_Rela *, bfd_vma, reloc_howto_type *, |
| 168 | Elf_Internal_Sym *, asection **, bfd_vma *, const char **, |
| 169 | boolean *)); |
| 170 | static bfd_vma mips_elf64_obtain_contents |
| 171 | PARAMS ((reloc_howto_type *, const Elf_Internal_Rela *, bfd *, bfd_byte *)); |
| 172 | static boolean mips_elf64_perform_relocation |
| 173 | PARAMS ((struct bfd_link_info *, reloc_howto_type *, |
| 174 | const Elf_Internal_Rela *, bfd_vma, |
| 175 | bfd *, asection *, bfd_byte *, boolean)); |
| 176 | static boolean mips_elf64_relocate_section |
| 177 | PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 178 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 179 | boolean mips_elf64_create_dynamic_sections |
| 180 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 181 | boolean mips_elf64_adjust_dynamic_symbol |
| 182 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *h)); |
| 183 | boolean mips_elf64_always_size_sections |
| 184 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 185 | static boolean mips_elf64_check_mips16_stubs |
| 186 | PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); |
| 187 | boolean mips_elf64_size_dynamic_sections |
| 188 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 189 | boolean mips_elf64_finish_dynamic_symbol |
| 190 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 191 | Elf_Internal_Sym *)); |
| 192 | boolean mips_elf64_finish_dynamic_sections |
| 193 | PARAMS ((bfd *, struct bfd_link_info *info)); |
| 194 | asection *mips_elf64_gc_mark_hook |
| 195 | PARAMS ((bfd *, struct bfd_link_info *, Elf_Internal_Rela *, |
| 196 | struct elf_link_hash_entry *, Elf_Internal_Sym *)); |
| 197 | boolean mips_elf64_gc_sweep_hook |
| 198 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 199 | const Elf_Internal_Rela *)); |
| 200 | static boolean mips_elf64_create_got_section |
| 201 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 202 | static boolean mips_elf64_record_global_got_symbol |
| 203 | PARAMS ((struct elf_link_hash_entry *, struct bfd_link_info *, |
| 204 | struct mips_elf64_got_info *)); |
| 205 | static asection *mips_elf64_create_msym_section PARAMS((bfd *)); |
| 206 | static void mips_elf64_allocate_dynamic_relocations |
| 207 | PARAMS ((bfd *, unsigned int)); |
| 208 | static boolean mips_elf64_stub_section_p PARAMS ((bfd *, asection *)); |
| 209 | boolean mips_elf64_check_relocs |
| 210 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 211 | const Elf_Internal_Rela *)); |
| 212 | static boolean mips_elf64_output_extsym |
| 213 | PARAMS ((struct mips_elf64_link_hash_entry *, PTR)); |
| 214 | static void mips_elf64_swap_gptab_in |
| 215 | PARAMS ((bfd *, const Elf32_External_gptab *, Elf32_gptab *)); |
| 216 | static void mips_elf64_swap_gptab_out |
| 217 | PARAMS ((bfd *, const Elf32_gptab *, Elf32_External_gptab *)); |
| 218 | static int gptab_compare PARAMS ((const PTR, const PTR)); |
| 219 | boolean mips_elf64_final_link PARAMS ((bfd *, struct bfd_link_info *)); |
| 220 | |
| 221 | extern const bfd_target bfd_elf64_bigmips_vec; |
| 222 | extern const bfd_target bfd_elf64_littlemips_vec; |
| 223 | |
| 224 | static bfd_vma prev_reloc_addend = 0; |
| 225 | static bfd_size_type prev_reloc_address = 0; |
| 226 | |
| 227 | /* Whether we are trying to be compatible with IRIX6 (or little endianers |
| 228 | which are otherwise IRIX-ABI compliant). */ |
| 229 | #define SGI_COMPAT(abfd) \ |
| 230 | ((abfd->xvec == &bfd_elf64_bigmips_vec) \ |
| 231 | || (abfd->xvec == &bfd_elf64_littlemips_vec) ? true : false) |
| 232 | |
| 233 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
| 234 | from smaller values. Start with zero, widen, *then* decrement. */ |
| 235 | #define MINUS_ONE (((bfd_vma)0) - 1) |
| 236 | |
| 237 | /* The number of local .got entries we reserve. */ |
| 238 | #define MIPS_RESERVED_GOTNO (2) |
| 239 | |
| 240 | /* Instructions which appear in a stub. */ |
| 241 | #define ELF_MIPS_GP_OFFSET(abfd) 0x7ff0 |
| 242 | #define STUB_LW 0xdf998010 /* ld t9,0x8010(gp) */ |
| 243 | #define STUB_MOVE 0x03e07825 /* move t7,ra */ |
| 244 | #define STUB_JALR 0x0320f809 /* jal t9 */ |
| 245 | #define STUB_LI16 0x34180000 /* ori t8,zero,0 */ |
| 246 | #define MIPS_FUNCTION_STUB_SIZE (16) |
| 247 | |
| 248 | /* The relocation table used for SHT_REL sections. */ |
| 249 | |
| 250 | #define UNUSED_RELOC(num) { num, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 } |
| 251 | |
| 252 | static reloc_howto_type mips_elf64_howto_table_rel[] = |
| 253 | { |
| 254 | /* No relocation. */ |
| 255 | HOWTO (R_MIPS_NONE, /* type */ |
| 256 | 0, /* rightshift */ |
| 257 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 258 | 0, /* bitsize */ |
| 259 | false, /* pc_relative */ |
| 260 | 0, /* bitpos */ |
| 261 | complain_overflow_dont, /* complain_on_overflow */ |
| 262 | bfd_elf_generic_reloc, /* special_function */ |
| 263 | "R_MIPS_NONE", /* name */ |
| 264 | false, /* partial_inplace */ |
| 265 | 0, /* src_mask */ |
| 266 | 0, /* dst_mask */ |
| 267 | false), /* pcrel_offset */ |
| 268 | |
| 269 | /* 16 bit relocation. */ |
| 270 | HOWTO (R_MIPS_16, /* type */ |
| 271 | 0, /* rightshift */ |
| 272 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 273 | 16, /* bitsize */ |
| 274 | false, /* pc_relative */ |
| 275 | 0, /* bitpos */ |
| 276 | complain_overflow_signed, /* complain_on_overflow */ |
| 277 | bfd_elf_generic_reloc, /* special_function */ |
| 278 | "R_MIPS_16", /* name */ |
| 279 | true, /* partial_inplace */ |
| 280 | 0x0000ffff, /* src_mask */ |
| 281 | 0x0000ffff, /* dst_mask */ |
| 282 | false), /* pcrel_offset */ |
| 283 | |
| 284 | /* 32 bit relocation. */ |
| 285 | HOWTO (R_MIPS_32, /* type */ |
| 286 | 0, /* rightshift */ |
| 287 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 288 | 32, /* bitsize */ |
| 289 | false, /* pc_relative */ |
| 290 | 0, /* bitpos */ |
| 291 | complain_overflow_dont, /* complain_on_overflow */ |
| 292 | bfd_elf_generic_reloc, /* special_function */ |
| 293 | "R_MIPS_32", /* name */ |
| 294 | true, /* partial_inplace */ |
| 295 | 0xffffffff, /* src_mask */ |
| 296 | 0xffffffff, /* dst_mask */ |
| 297 | false), /* pcrel_offset */ |
| 298 | |
| 299 | /* 32 bit symbol relative relocation. */ |
| 300 | HOWTO (R_MIPS_REL32, /* type */ |
| 301 | 0, /* rightshift */ |
| 302 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 303 | 32, /* bitsize */ |
| 304 | false, /* pc_relative */ |
| 305 | 0, /* bitpos */ |
| 306 | complain_overflow_dont, /* complain_on_overflow */ |
| 307 | bfd_elf_generic_reloc, /* special_function */ |
| 308 | "R_MIPS_REL32", /* name */ |
| 309 | true, /* partial_inplace */ |
| 310 | 0xffffffff, /* src_mask */ |
| 311 | 0xffffffff, /* dst_mask */ |
| 312 | false), /* pcrel_offset */ |
| 313 | |
| 314 | /* 26 bit jump address. */ |
| 315 | HOWTO (R_MIPS_26, /* type */ |
| 316 | 2, /* rightshift */ |
| 317 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 318 | 26, /* bitsize */ |
| 319 | false, /* pc_relative */ |
| 320 | 0, /* bitpos */ |
| 321 | complain_overflow_dont, /* complain_on_overflow */ |
| 322 | /* This needs complex overflow |
| 323 | detection, because the upper 36 |
| 324 | bits must match the PC + 4. */ |
| 325 | bfd_elf_generic_reloc, /* special_function */ |
| 326 | "R_MIPS_26", /* name */ |
| 327 | true, /* partial_inplace */ |
| 328 | 0x03ffffff, /* src_mask */ |
| 329 | 0x03ffffff, /* dst_mask */ |
| 330 | false), /* pcrel_offset */ |
| 331 | |
| 332 | /* High 16 bits of symbol value. */ |
| 333 | HOWTO (R_MIPS_HI16, /* type */ |
| 334 | 0, /* rightshift */ |
| 335 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 336 | 16, /* bitsize */ |
| 337 | false, /* pc_relative */ |
| 338 | 0, /* bitpos */ |
| 339 | complain_overflow_dont, /* complain_on_overflow */ |
| 340 | bfd_elf_generic_reloc, /* special_function */ |
| 341 | "R_MIPS_HI16", /* name */ |
| 342 | true, /* partial_inplace */ |
| 343 | 0x0000ffff, /* src_mask */ |
| 344 | 0x0000ffff, /* dst_mask */ |
| 345 | false), /* pcrel_offset */ |
| 346 | |
| 347 | /* Low 16 bits of symbol value. */ |
| 348 | HOWTO (R_MIPS_LO16, /* type */ |
| 349 | 0, /* rightshift */ |
| 350 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 351 | 16, /* bitsize */ |
| 352 | false, /* pc_relative */ |
| 353 | 0, /* bitpos */ |
| 354 | complain_overflow_dont, /* complain_on_overflow */ |
| 355 | bfd_elf_generic_reloc, /* special_function */ |
| 356 | "R_MIPS_LO16", /* name */ |
| 357 | true, /* partial_inplace */ |
| 358 | 0x0000ffff, /* src_mask */ |
| 359 | 0x0000ffff, /* dst_mask */ |
| 360 | false), /* pcrel_offset */ |
| 361 | |
| 362 | /* GP relative reference. */ |
| 363 | HOWTO (R_MIPS_GPREL16, /* type */ |
| 364 | 0, /* rightshift */ |
| 365 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 366 | 16, /* bitsize */ |
| 367 | false, /* pc_relative */ |
| 368 | 0, /* bitpos */ |
| 369 | complain_overflow_signed, /* complain_on_overflow */ |
| 370 | mips_elf64_gprel16_reloc, /* special_function */ |
| 371 | "R_MIPS_GPREL16", /* name */ |
| 372 | true, /* partial_inplace */ |
| 373 | 0x0000ffff, /* src_mask */ |
| 374 | 0x0000ffff, /* dst_mask */ |
| 375 | false), /* pcrel_offset */ |
| 376 | |
| 377 | /* Reference to literal section. */ |
| 378 | HOWTO (R_MIPS_LITERAL, /* type */ |
| 379 | 0, /* rightshift */ |
| 380 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 381 | 16, /* bitsize */ |
| 382 | false, /* pc_relative */ |
| 383 | 0, /* bitpos */ |
| 384 | complain_overflow_signed, /* complain_on_overflow */ |
| 385 | mips_elf64_literal_reloc, /* special_function */ |
| 386 | "R_MIPS_LITERAL", /* name */ |
| 387 | true, /* partial_inplace */ |
| 388 | 0x0000ffff, /* src_mask */ |
| 389 | 0x0000ffff, /* dst_mask */ |
| 390 | false), /* pcrel_offset */ |
| 391 | |
| 392 | /* Reference to global offset table. */ |
| 393 | HOWTO (R_MIPS_GOT16, /* type */ |
| 394 | 0, /* rightshift */ |
| 395 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 396 | 16, /* bitsize */ |
| 397 | false, /* pc_relative */ |
| 398 | 0, /* bitpos */ |
| 399 | complain_overflow_signed, /* complain_on_overflow */ |
| 400 | mips_elf64_got16_reloc, /* special_function */ |
| 401 | "R_MIPS_GOT16", /* name */ |
| 402 | true, /* partial_inplace */ |
| 403 | 0x0000ffff, /* src_mask */ |
| 404 | 0x0000ffff, /* dst_mask */ |
| 405 | false), /* pcrel_offset */ |
| 406 | |
| 407 | /* 16 bit PC relative reference. */ |
| 408 | HOWTO (R_MIPS_PC16, /* type */ |
| 409 | 0, /* rightshift */ |
| 410 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 411 | 16, /* bitsize */ |
| 412 | true, /* pc_relative */ |
| 413 | 0, /* bitpos */ |
| 414 | complain_overflow_signed, /* complain_on_overflow */ |
| 415 | bfd_elf_generic_reloc, /* special_function */ |
| 416 | "R_MIPS_PC16", /* name */ |
| 417 | true, /* partial_inplace */ |
| 418 | 0x0000ffff, /* src_mask */ |
| 419 | 0x0000ffff, /* dst_mask */ |
| 420 | true), /* pcrel_offset */ |
| 421 | |
| 422 | /* 16 bit call through global offset table. */ |
| 423 | /* FIXME: This is not handled correctly. */ |
| 424 | HOWTO (R_MIPS_CALL16, /* type */ |
| 425 | 0, /* rightshift */ |
| 426 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 427 | 16, /* bitsize */ |
| 428 | false, /* pc_relative */ |
| 429 | 0, /* bitpos */ |
| 430 | complain_overflow_signed, /* complain_on_overflow */ |
| 431 | bfd_elf_generic_reloc, /* special_function */ |
| 432 | "R_MIPS_CALL16", /* name */ |
| 433 | true, /* partial_inplace */ |
| 434 | 0x0000ffff, /* src_mask */ |
| 435 | 0x0000ffff, /* dst_mask */ |
| 436 | false), /* pcrel_offset */ |
| 437 | |
| 438 | /* 32 bit GP relative reference. */ |
| 439 | HOWTO (R_MIPS_GPREL32, /* type */ |
| 440 | 0, /* rightshift */ |
| 441 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 442 | 32, /* bitsize */ |
| 443 | false, /* pc_relative */ |
| 444 | 0, /* bitpos */ |
| 445 | complain_overflow_dont, /* complain_on_overflow */ |
| 446 | mips_elf64_gprel32_reloc, /* special_function */ |
| 447 | "R_MIPS_GPREL32", /* name */ |
| 448 | true, /* partial_inplace */ |
| 449 | 0xffffffff, /* src_mask */ |
| 450 | 0xffffffff, /* dst_mask */ |
| 451 | false), /* pcrel_offset */ |
| 452 | |
| 453 | UNUSED_RELOC (13), |
| 454 | UNUSED_RELOC (14), |
| 455 | UNUSED_RELOC (15), |
| 456 | |
| 457 | /* A 5 bit shift field. */ |
| 458 | HOWTO (R_MIPS_SHIFT5, /* type */ |
| 459 | 0, /* rightshift */ |
| 460 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 461 | 5, /* bitsize */ |
| 462 | false, /* pc_relative */ |
| 463 | 6, /* bitpos */ |
| 464 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 465 | bfd_elf_generic_reloc, /* special_function */ |
| 466 | "R_MIPS_SHIFT5", /* name */ |
| 467 | true, /* partial_inplace */ |
| 468 | 0x000007c0, /* src_mask */ |
| 469 | 0x000007c0, /* dst_mask */ |
| 470 | false), /* pcrel_offset */ |
| 471 | |
| 472 | /* A 6 bit shift field. */ |
| 473 | HOWTO (R_MIPS_SHIFT6, /* type */ |
| 474 | 0, /* rightshift */ |
| 475 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 476 | 6, /* bitsize */ |
| 477 | false, /* pc_relative */ |
| 478 | 6, /* bitpos */ |
| 479 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 480 | mips_elf64_shift6_reloc, /* special_function */ |
| 481 | "R_MIPS_SHIFT6", /* name */ |
| 482 | true, /* partial_inplace */ |
| 483 | 0x000007c4, /* src_mask */ |
| 484 | 0x000007c4, /* dst_mask */ |
| 485 | false), /* pcrel_offset */ |
| 486 | |
| 487 | /* 64 bit relocation. */ |
| 488 | HOWTO (R_MIPS_64, /* type */ |
| 489 | 0, /* rightshift */ |
| 490 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 491 | 64, /* bitsize */ |
| 492 | false, /* pc_relative */ |
| 493 | 0, /* bitpos */ |
| 494 | complain_overflow_dont, /* complain_on_overflow */ |
| 495 | bfd_elf_generic_reloc, /* special_function */ |
| 496 | "R_MIPS_64", /* name */ |
| 497 | true, /* partial_inplace */ |
| 498 | MINUS_ONE, /* src_mask */ |
| 499 | MINUS_ONE, /* dst_mask */ |
| 500 | false), /* pcrel_offset */ |
| 501 | |
| 502 | /* Displacement in the global offset table. */ |
| 503 | /* FIXME: Not handled correctly. */ |
| 504 | HOWTO (R_MIPS_GOT_DISP, /* type */ |
| 505 | 0, /* rightshift */ |
| 506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 507 | 16, /* bitsize */ |
| 508 | false, /* pc_relative */ |
| 509 | 0, /* bitpos */ |
| 510 | complain_overflow_signed, /* complain_on_overflow */ |
| 511 | bfd_elf_generic_reloc, /* special_function */ |
| 512 | "R_MIPS_GOT_DISP", /* name */ |
| 513 | true, /* partial_inplace */ |
| 514 | 0x0000ffff, /* src_mask */ |
| 515 | 0x0000ffff, /* dst_mask */ |
| 516 | false), /* pcrel_offset */ |
| 517 | |
| 518 | /* Displacement to page pointer in the global offset table. */ |
| 519 | /* FIXME: Not handled correctly. */ |
| 520 | HOWTO (R_MIPS_GOT_PAGE, /* type */ |
| 521 | 0, /* rightshift */ |
| 522 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 523 | 16, /* bitsize */ |
| 524 | false, /* pc_relative */ |
| 525 | 0, /* bitpos */ |
| 526 | complain_overflow_signed, /* complain_on_overflow */ |
| 527 | bfd_elf_generic_reloc, /* special_function */ |
| 528 | "R_MIPS_GOT_PAGE", /* name */ |
| 529 | true, /* partial_inplace */ |
| 530 | 0x0000ffff, /* src_mask */ |
| 531 | 0x0000ffff, /* dst_mask */ |
| 532 | false), /* pcrel_offset */ |
| 533 | |
| 534 | /* Offset from page pointer in the global offset table. */ |
| 535 | /* FIXME: Not handled correctly. */ |
| 536 | HOWTO (R_MIPS_GOT_OFST, /* type */ |
| 537 | 0, /* rightshift */ |
| 538 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 539 | 16, /* bitsize */ |
| 540 | false, /* pc_relative */ |
| 541 | 0, /* bitpos */ |
| 542 | complain_overflow_signed, /* complain_on_overflow */ |
| 543 | bfd_elf_generic_reloc, /* special_function */ |
| 544 | "R_MIPS_GOT_OFST", /* name */ |
| 545 | true, /* partial_inplace */ |
| 546 | 0x0000ffff, /* src_mask */ |
| 547 | 0x0000ffff, /* dst_mask */ |
| 548 | false), /* pcrel_offset */ |
| 549 | |
| 550 | /* High 16 bits of displacement in global offset table. */ |
| 551 | /* FIXME: Not handled correctly. */ |
| 552 | HOWTO (R_MIPS_GOT_HI16, /* type */ |
| 553 | 0, /* rightshift */ |
| 554 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 555 | 16, /* bitsize */ |
| 556 | false, /* pc_relative */ |
| 557 | 0, /* bitpos */ |
| 558 | complain_overflow_dont, /* complain_on_overflow */ |
| 559 | bfd_elf_generic_reloc, /* special_function */ |
| 560 | "R_MIPS_GOT_HI16", /* name */ |
| 561 | true, /* partial_inplace */ |
| 562 | 0x0000ffff, /* src_mask */ |
| 563 | 0x0000ffff, /* dst_mask */ |
| 564 | false), /* pcrel_offset */ |
| 565 | |
| 566 | /* Low 16 bits of displacement in global offset table. */ |
| 567 | /* FIXME: Not handled correctly. */ |
| 568 | HOWTO (R_MIPS_GOT_LO16, /* type */ |
| 569 | 0, /* rightshift */ |
| 570 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 571 | 16, /* bitsize */ |
| 572 | false, /* pc_relative */ |
| 573 | 0, /* bitpos */ |
| 574 | complain_overflow_dont, /* complain_on_overflow */ |
| 575 | bfd_elf_generic_reloc, /* special_function */ |
| 576 | "R_MIPS_GOT_LO16", /* name */ |
| 577 | true, /* partial_inplace */ |
| 578 | 0x0000ffff, /* src_mask */ |
| 579 | 0x0000ffff, /* dst_mask */ |
| 580 | false), /* pcrel_offset */ |
| 581 | |
| 582 | /* 64 bit substraction. */ |
| 583 | /* FIXME: Not handled correctly. */ |
| 584 | HOWTO (R_MIPS_SUB, /* type */ |
| 585 | 0, /* rightshift */ |
| 586 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 587 | 64, /* bitsize */ |
| 588 | false, /* pc_relative */ |
| 589 | 0, /* bitpos */ |
| 590 | complain_overflow_dont, /* complain_on_overflow */ |
| 591 | bfd_elf_generic_reloc, /* special_function */ |
| 592 | "R_MIPS_SUB", /* name */ |
| 593 | true, /* partial_inplace */ |
| 594 | MINUS_ONE, /* src_mask */ |
| 595 | MINUS_ONE, /* dst_mask */ |
| 596 | false), /* pcrel_offset */ |
| 597 | |
| 598 | /* Insert the addend as an instruction. */ |
| 599 | /* FIXME: Not handled correctly. */ |
| 600 | HOWTO (R_MIPS_INSERT_A, /* type */ |
| 601 | 0, /* rightshift */ |
| 602 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 603 | 32, /* bitsize */ |
| 604 | false, /* pc_relative */ |
| 605 | 0, /* bitpos */ |
| 606 | complain_overflow_dont, /* complain_on_overflow */ |
| 607 | bfd_elf_generic_reloc, /* special_function */ |
| 608 | "R_MIPS_INSERT_A", /* name */ |
| 609 | true, /* partial_inplace */ |
| 610 | 0xffffffff, /* src_mask */ |
| 611 | 0xffffffff, /* dst_mask */ |
| 612 | false), /* pcrel_offset */ |
| 613 | |
| 614 | /* Insert the addend as an instruction, and change all relocations |
| 615 | to refer to the old instruction at the address. */ |
| 616 | /* FIXME: Not handled correctly. */ |
| 617 | HOWTO (R_MIPS_INSERT_B, /* type */ |
| 618 | 0, /* rightshift */ |
| 619 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 620 | 32, /* bitsize */ |
| 621 | false, /* pc_relative */ |
| 622 | 0, /* bitpos */ |
| 623 | complain_overflow_dont, /* complain_on_overflow */ |
| 624 | bfd_elf_generic_reloc, /* special_function */ |
| 625 | "R_MIPS_INSERT_B", /* name */ |
| 626 | true, /* partial_inplace */ |
| 627 | 0xffffffff, /* src_mask */ |
| 628 | 0xffffffff, /* dst_mask */ |
| 629 | false), /* pcrel_offset */ |
| 630 | |
| 631 | /* Delete a 32 bit instruction. */ |
| 632 | /* FIXME: Not handled correctly. */ |
| 633 | HOWTO (R_MIPS_DELETE, /* type */ |
| 634 | 0, /* rightshift */ |
| 635 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 636 | 32, /* bitsize */ |
| 637 | false, /* pc_relative */ |
| 638 | 0, /* bitpos */ |
| 639 | complain_overflow_dont, /* complain_on_overflow */ |
| 640 | bfd_elf_generic_reloc, /* special_function */ |
| 641 | "R_MIPS_DELETE", /* name */ |
| 642 | true, /* partial_inplace */ |
| 643 | 0xffffffff, /* src_mask */ |
| 644 | 0xffffffff, /* dst_mask */ |
| 645 | false), /* pcrel_offset */ |
| 646 | |
| 647 | /* Get the higher value of a 64 bit addend. */ |
| 648 | HOWTO (R_MIPS_HIGHER, /* type */ |
| 649 | 0, /* rightshift */ |
| 650 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 651 | 16, /* bitsize */ |
| 652 | false, /* pc_relative */ |
| 653 | 0, /* bitpos */ |
| 654 | complain_overflow_dont, /* complain_on_overflow */ |
| 655 | mips_elf64_higher_reloc, /* special_function */ |
| 656 | "R_MIPS_HIGHER", /* name */ |
| 657 | true, /* partial_inplace */ |
| 658 | 0x0000ffff, /* src_mask */ |
| 659 | 0x0000ffff, /* dst_mask */ |
| 660 | false), /* pcrel_offset */ |
| 661 | |
| 662 | /* Get the highest value of a 64 bit addend. */ |
| 663 | HOWTO (R_MIPS_HIGHEST, /* type */ |
| 664 | 0, /* rightshift */ |
| 665 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 666 | 16, /* bitsize */ |
| 667 | false, /* pc_relative */ |
| 668 | 0, /* bitpos */ |
| 669 | complain_overflow_dont, /* complain_on_overflow */ |
| 670 | mips_elf64_highest_reloc, /* special_function */ |
| 671 | "R_MIPS_HIGHEST", /* name */ |
| 672 | true, /* partial_inplace */ |
| 673 | 0x0000ffff, /* src_mask */ |
| 674 | 0x0000ffff, /* dst_mask */ |
| 675 | false), /* pcrel_offset */ |
| 676 | |
| 677 | /* High 16 bits of displacement in global offset table. */ |
| 678 | /* FIXME: Not handled correctly. */ |
| 679 | HOWTO (R_MIPS_CALL_HI16, /* type */ |
| 680 | 0, /* rightshift */ |
| 681 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 682 | 16, /* bitsize */ |
| 683 | false, /* pc_relative */ |
| 684 | 0, /* bitpos */ |
| 685 | complain_overflow_dont, /* complain_on_overflow */ |
| 686 | bfd_elf_generic_reloc, /* special_function */ |
| 687 | "R_MIPS_CALL_HI16", /* name */ |
| 688 | true, /* partial_inplace */ |
| 689 | 0x0000ffff, /* src_mask */ |
| 690 | 0x0000ffff, /* dst_mask */ |
| 691 | false), /* pcrel_offset */ |
| 692 | |
| 693 | /* Low 16 bits of displacement in global offset table. */ |
| 694 | /* FIXME: Not handled correctly. */ |
| 695 | HOWTO (R_MIPS_CALL_LO16, /* type */ |
| 696 | 0, /* rightshift */ |
| 697 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 698 | 16, /* bitsize */ |
| 699 | false, /* pc_relative */ |
| 700 | 0, /* bitpos */ |
| 701 | complain_overflow_dont, /* complain_on_overflow */ |
| 702 | bfd_elf_generic_reloc, /* special_function */ |
| 703 | "R_MIPS_CALL_LO16", /* name */ |
| 704 | true, /* partial_inplace */ |
| 705 | 0x0000ffff, /* src_mask */ |
| 706 | 0x0000ffff, /* dst_mask */ |
| 707 | false), /* pcrel_offset */ |
| 708 | |
| 709 | /* Section displacement, used by an associated event location section. */ |
| 710 | /* FIXME: Not handled correctly. */ |
| 711 | HOWTO (R_MIPS_SCN_DISP, /* type */ |
| 712 | 0, /* rightshift */ |
| 713 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 714 | 32, /* bitsize */ |
| 715 | false, /* pc_relative */ |
| 716 | 0, /* bitpos */ |
| 717 | complain_overflow_dont, /* complain_on_overflow */ |
| 718 | bfd_elf_generic_reloc, /* special_function */ |
| 719 | "R_MIPS_SCN_DISP", /* name */ |
| 720 | true, /* partial_inplace */ |
| 721 | 0xffffffff, /* src_mask */ |
| 722 | 0xffffffff, /* dst_mask */ |
| 723 | false), /* pcrel_offset */ |
| 724 | |
| 725 | HOWTO (R_MIPS_REL16, /* type */ |
| 726 | 0, /* rightshift */ |
| 727 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 728 | 16, /* bitsize */ |
| 729 | false, /* pc_relative */ |
| 730 | 0, /* bitpos */ |
| 731 | complain_overflow_signed, /* complain_on_overflow */ |
| 732 | bfd_elf_generic_reloc, /* special_function */ |
| 733 | "R_MIPS_REL16", /* name */ |
| 734 | true, /* partial_inplace */ |
| 735 | 0xffff, /* src_mask */ |
| 736 | 0xffff, /* dst_mask */ |
| 737 | false), /* pcrel_offset */ |
| 738 | |
| 739 | /* These two are obsolete. */ |
| 740 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), |
| 741 | EMPTY_HOWTO (R_MIPS_PJUMP), |
| 742 | |
| 743 | /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. |
| 744 | It must be used for multigot GOT's (and only there). */ |
| 745 | HOWTO (R_MIPS_RELGOT, /* type */ |
| 746 | 0, /* rightshift */ |
| 747 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 748 | 32, /* bitsize */ |
| 749 | false, /* pc_relative */ |
| 750 | 0, /* bitpos */ |
| 751 | complain_overflow_dont, /* complain_on_overflow */ |
| 752 | bfd_elf_generic_reloc, /* special_function */ |
| 753 | "R_MIPS_RELGOT", /* name */ |
| 754 | true, /* partial_inplace */ |
| 755 | 0xffffffff, /* src_mask */ |
| 756 | 0xffffffff, /* dst_mask */ |
| 757 | false), /* pcrel_offset */ |
| 758 | |
| 759 | /* Protected jump conversion. This is an optimization hint. No |
| 760 | relocation is required for correctness. */ |
| 761 | HOWTO (R_MIPS_JALR, /* type */ |
| 762 | 0, /* rightshift */ |
| 763 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 764 | 32, /* bitsize */ |
| 765 | false, /* pc_relative */ |
| 766 | 0, /* bitpos */ |
| 767 | complain_overflow_dont, /* complain_on_overflow */ |
| 768 | bfd_elf_generic_reloc, /* special_function */ |
| 769 | "R_MIPS_JALR", /* name */ |
| 770 | false, /* partial_inplace */ |
| 771 | 0, /* src_mask */ |
| 772 | 0x00000000, /* dst_mask */ |
| 773 | false), /* pcrel_offset */ |
| 774 | }; |
| 775 | |
| 776 | /* The relocation table used for SHT_RELA sections. */ |
| 777 | |
| 778 | static reloc_howto_type mips_elf64_howto_table_rela[] = |
| 779 | { |
| 780 | /* No relocation. */ |
| 781 | HOWTO (R_MIPS_NONE, /* type */ |
| 782 | 0, /* rightshift */ |
| 783 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 784 | 0, /* bitsize */ |
| 785 | false, /* pc_relative */ |
| 786 | 0, /* bitpos */ |
| 787 | complain_overflow_dont, /* complain_on_overflow */ |
| 788 | bfd_elf_generic_reloc, /* special_function */ |
| 789 | "R_MIPS_NONE", /* name */ |
| 790 | false, /* partial_inplace */ |
| 791 | 0, /* src_mask */ |
| 792 | 0, /* dst_mask */ |
| 793 | false), /* pcrel_offset */ |
| 794 | |
| 795 | /* 16 bit relocation. */ |
| 796 | HOWTO (R_MIPS_16, /* type */ |
| 797 | 0, /* rightshift */ |
| 798 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 799 | 16, /* bitsize */ |
| 800 | false, /* pc_relative */ |
| 801 | 0, /* bitpos */ |
| 802 | complain_overflow_signed, /* complain_on_overflow */ |
| 803 | bfd_elf_generic_reloc, /* special_function */ |
| 804 | "R_MIPS_16", /* name */ |
| 805 | false, /* partial_inplace */ |
| 806 | 0, /* src_mask */ |
| 807 | 0x0000ffff, /* dst_mask */ |
| 808 | false), /* pcrel_offset */ |
| 809 | |
| 810 | /* 32 bit relocation. */ |
| 811 | HOWTO (R_MIPS_32, /* type */ |
| 812 | 0, /* rightshift */ |
| 813 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 814 | 32, /* bitsize */ |
| 815 | false, /* pc_relative */ |
| 816 | 0, /* bitpos */ |
| 817 | complain_overflow_dont, /* complain_on_overflow */ |
| 818 | bfd_elf_generic_reloc, /* special_function */ |
| 819 | "R_MIPS_32", /* name */ |
| 820 | false, /* partial_inplace */ |
| 821 | 0, /* src_mask */ |
| 822 | 0xffffffff, /* dst_mask */ |
| 823 | false), /* pcrel_offset */ |
| 824 | |
| 825 | /* 32 bit symbol relative relocation. */ |
| 826 | HOWTO (R_MIPS_REL32, /* type */ |
| 827 | 0, /* rightshift */ |
| 828 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 829 | 32, /* bitsize */ |
| 830 | false, /* pc_relative */ |
| 831 | 0, /* bitpos */ |
| 832 | complain_overflow_dont, /* complain_on_overflow */ |
| 833 | bfd_elf_generic_reloc, /* special_function */ |
| 834 | "R_MIPS_REL32", /* name */ |
| 835 | false, /* partial_inplace */ |
| 836 | 0, /* src_mask */ |
| 837 | 0xffffffff, /* dst_mask */ |
| 838 | false), /* pcrel_offset */ |
| 839 | |
| 840 | /* 26 bit jump address. */ |
| 841 | HOWTO (R_MIPS_26, /* type */ |
| 842 | 2, /* rightshift */ |
| 843 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 844 | 26, /* bitsize */ |
| 845 | false, /* pc_relative */ |
| 846 | 0, /* bitpos */ |
| 847 | complain_overflow_dont, /* complain_on_overflow */ |
| 848 | /* This needs complex overflow |
| 849 | detection, because the upper 36 |
| 850 | bits must match the PC + 4. */ |
| 851 | bfd_elf_generic_reloc, /* special_function */ |
| 852 | "R_MIPS_26", /* name */ |
| 853 | false, /* partial_inplace */ |
| 854 | 0, /* src_mask */ |
| 855 | 0x03ffffff, /* dst_mask */ |
| 856 | false), /* pcrel_offset */ |
| 857 | |
| 858 | /* R_MIPS_HI16 and R_MIPS_LO16 are unsupported for 64 bit REL. */ |
| 859 | /* High 16 bits of symbol value. */ |
| 860 | HOWTO (R_MIPS_HI16, /* type */ |
| 861 | 0, /* rightshift */ |
| 862 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 863 | 16, /* bitsize */ |
| 864 | false, /* pc_relative */ |
| 865 | 0, /* bitpos */ |
| 866 | complain_overflow_dont, /* complain_on_overflow */ |
| 867 | bfd_elf_generic_reloc, /* special_function */ |
| 868 | "R_MIPS_HI16", /* name */ |
| 869 | false, /* partial_inplace */ |
| 870 | 0, /* src_mask */ |
| 871 | 0x0000ffff, /* dst_mask */ |
| 872 | false), /* pcrel_offset */ |
| 873 | |
| 874 | /* Low 16 bits of symbol value. */ |
| 875 | HOWTO (R_MIPS_LO16, /* type */ |
| 876 | 0, /* rightshift */ |
| 877 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 878 | 16, /* bitsize */ |
| 879 | false, /* pc_relative */ |
| 880 | 0, /* bitpos */ |
| 881 | complain_overflow_dont, /* complain_on_overflow */ |
| 882 | bfd_elf_generic_reloc, /* special_function */ |
| 883 | "R_MIPS_LO16", /* name */ |
| 884 | false, /* partial_inplace */ |
| 885 | 0, /* src_mask */ |
| 886 | 0x0000ffff, /* dst_mask */ |
| 887 | false), /* pcrel_offset */ |
| 888 | |
| 889 | /* GP relative reference. */ |
| 890 | HOWTO (R_MIPS_GPREL16, /* type */ |
| 891 | 0, /* rightshift */ |
| 892 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 893 | 16, /* bitsize */ |
| 894 | false, /* pc_relative */ |
| 895 | 0, /* bitpos */ |
| 896 | complain_overflow_signed, /* complain_on_overflow */ |
| 897 | mips_elf64_gprel16_reloca, /* special_function */ |
| 898 | "R_MIPS_GPREL16", /* name */ |
| 899 | false, /* partial_inplace */ |
| 900 | 0, /* src_mask */ |
| 901 | 0x0000ffff, /* dst_mask */ |
| 902 | false), /* pcrel_offset */ |
| 903 | |
| 904 | /* Reference to literal section. */ |
| 905 | HOWTO (R_MIPS_LITERAL, /* type */ |
| 906 | 0, /* rightshift */ |
| 907 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 908 | 16, /* bitsize */ |
| 909 | false, /* pc_relative */ |
| 910 | 0, /* bitpos */ |
| 911 | complain_overflow_signed, /* complain_on_overflow */ |
| 912 | mips_elf64_literal_reloc, /* special_function */ |
| 913 | "R_MIPS_LITERAL", /* name */ |
| 914 | false, /* partial_inplace */ |
| 915 | 0, /* src_mask */ |
| 916 | 0x0000ffff, /* dst_mask */ |
| 917 | false), /* pcrel_offset */ |
| 918 | |
| 919 | /* Reference to global offset table. */ |
| 920 | /* FIXME: This is not handled correctly. */ |
| 921 | HOWTO (R_MIPS_GOT16, /* type */ |
| 922 | 0, /* rightshift */ |
| 923 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 924 | 16, /* bitsize */ |
| 925 | false, /* pc_relative */ |
| 926 | 0, /* bitpos */ |
| 927 | complain_overflow_signed, /* complain_on_overflow */ |
| 928 | bfd_elf_generic_reloc, /* special_function */ |
| 929 | "R_MIPS_GOT16", /* name */ |
| 930 | false, /* partial_inplace */ |
| 931 | 0, /* src_mask */ |
| 932 | 0x0000ffff, /* dst_mask */ |
| 933 | false), /* pcrel_offset */ |
| 934 | |
| 935 | /* 16 bit PC relative reference. */ |
| 936 | HOWTO (R_MIPS_PC16, /* type */ |
| 937 | 0, /* rightshift */ |
| 938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 939 | 16, /* bitsize */ |
| 940 | true, /* pc_relative */ |
| 941 | 0, /* bitpos */ |
| 942 | complain_overflow_signed, /* complain_on_overflow */ |
| 943 | bfd_elf_generic_reloc, /* special_function */ |
| 944 | "R_MIPS_PC16", /* name */ |
| 945 | false, /* partial_inplace */ |
| 946 | 0, /* src_mask */ |
| 947 | 0x0000ffff, /* dst_mask */ |
| 948 | true), /* pcrel_offset */ |
| 949 | |
| 950 | /* 16 bit call through global offset table. */ |
| 951 | /* FIXME: This is not handled correctly. */ |
| 952 | HOWTO (R_MIPS_CALL16, /* type */ |
| 953 | 0, /* rightshift */ |
| 954 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 955 | 16, /* bitsize */ |
| 956 | false, /* pc_relative */ |
| 957 | 0, /* bitpos */ |
| 958 | complain_overflow_signed, /* complain_on_overflow */ |
| 959 | bfd_elf_generic_reloc, /* special_function */ |
| 960 | "R_MIPS_CALL16", /* name */ |
| 961 | false, /* partial_inplace */ |
| 962 | 0, /* src_mask */ |
| 963 | 0x0000ffff, /* dst_mask */ |
| 964 | false), /* pcrel_offset */ |
| 965 | |
| 966 | /* 32 bit GP relative reference. */ |
| 967 | HOWTO (R_MIPS_GPREL32, /* type */ |
| 968 | 0, /* rightshift */ |
| 969 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 970 | 32, /* bitsize */ |
| 971 | false, /* pc_relative */ |
| 972 | 0, /* bitpos */ |
| 973 | complain_overflow_dont, /* complain_on_overflow */ |
| 974 | mips_elf64_gprel32_reloc, /* special_function */ |
| 975 | "R_MIPS_GPREL32", /* name */ |
| 976 | false, /* partial_inplace */ |
| 977 | 0, /* src_mask */ |
| 978 | 0xffffffff, /* dst_mask */ |
| 979 | false), /* pcrel_offset */ |
| 980 | |
| 981 | UNUSED_RELOC (13), |
| 982 | UNUSED_RELOC (14), |
| 983 | UNUSED_RELOC (15), |
| 984 | |
| 985 | /* A 5 bit shift field. */ |
| 986 | HOWTO (R_MIPS_SHIFT5, /* type */ |
| 987 | 0, /* rightshift */ |
| 988 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 989 | 5, /* bitsize */ |
| 990 | false, /* pc_relative */ |
| 991 | 6, /* bitpos */ |
| 992 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 993 | bfd_elf_generic_reloc, /* special_function */ |
| 994 | "R_MIPS_SHIFT5", /* name */ |
| 995 | false, /* partial_inplace */ |
| 996 | 0, /* src_mask */ |
| 997 | 0x000007c0, /* dst_mask */ |
| 998 | false), /* pcrel_offset */ |
| 999 | |
| 1000 | /* A 6 bit shift field. */ |
| 1001 | HOWTO (R_MIPS_SHIFT6, /* type */ |
| 1002 | 0, /* rightshift */ |
| 1003 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1004 | 6, /* bitsize */ |
| 1005 | false, /* pc_relative */ |
| 1006 | 6, /* bitpos */ |
| 1007 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 1008 | mips_elf64_shift6_reloc, /* special_function */ |
| 1009 | "R_MIPS_SHIFT6", /* name */ |
| 1010 | false, /* partial_inplace */ |
| 1011 | 0, /* src_mask */ |
| 1012 | 0x000007c4, /* dst_mask */ |
| 1013 | false), /* pcrel_offset */ |
| 1014 | |
| 1015 | /* 64 bit relocation. */ |
| 1016 | HOWTO (R_MIPS_64, /* type */ |
| 1017 | 0, /* rightshift */ |
| 1018 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1019 | 64, /* bitsize */ |
| 1020 | false, /* pc_relative */ |
| 1021 | 0, /* bitpos */ |
| 1022 | complain_overflow_dont, /* complain_on_overflow */ |
| 1023 | bfd_elf_generic_reloc, /* special_function */ |
| 1024 | "R_MIPS_64", /* name */ |
| 1025 | false, /* partial_inplace */ |
| 1026 | 0, /* src_mask */ |
| 1027 | MINUS_ONE, /* dst_mask */ |
| 1028 | false), /* pcrel_offset */ |
| 1029 | |
| 1030 | /* Displacement in the global offset table. */ |
| 1031 | /* FIXME: Not handled correctly. */ |
| 1032 | HOWTO (R_MIPS_GOT_DISP, /* type */ |
| 1033 | 0, /* rightshift */ |
| 1034 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1035 | 16, /* bitsize */ |
| 1036 | false, /* pc_relative */ |
| 1037 | 0, /* bitpos */ |
| 1038 | complain_overflow_signed, /* complain_on_overflow */ |
| 1039 | bfd_elf_generic_reloc, /* special_function */ |
| 1040 | "R_MIPS_GOT_DISP", /* name */ |
| 1041 | false, /* partial_inplace */ |
| 1042 | 0, /* src_mask */ |
| 1043 | 0x0000ffff, /* dst_mask */ |
| 1044 | false), /* pcrel_offset */ |
| 1045 | |
| 1046 | /* Displacement to page pointer in the global offset table. */ |
| 1047 | /* FIXME: Not handled correctly. */ |
| 1048 | HOWTO (R_MIPS_GOT_PAGE, /* type */ |
| 1049 | 0, /* rightshift */ |
| 1050 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1051 | 16, /* bitsize */ |
| 1052 | false, /* pc_relative */ |
| 1053 | 0, /* bitpos */ |
| 1054 | complain_overflow_signed, /* complain_on_overflow */ |
| 1055 | bfd_elf_generic_reloc, /* special_function */ |
| 1056 | "R_MIPS_GOT_PAGE", /* name */ |
| 1057 | false, /* partial_inplace */ |
| 1058 | 0, /* src_mask */ |
| 1059 | 0x0000ffff, /* dst_mask */ |
| 1060 | false), /* pcrel_offset */ |
| 1061 | |
| 1062 | /* Offset from page pointer in the global offset table. */ |
| 1063 | /* FIXME: Not handled correctly. */ |
| 1064 | HOWTO (R_MIPS_GOT_OFST, /* type */ |
| 1065 | 0, /* rightshift */ |
| 1066 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1067 | 16, /* bitsize */ |
| 1068 | false, /* pc_relative */ |
| 1069 | 0, /* bitpos */ |
| 1070 | complain_overflow_signed, /* complain_on_overflow */ |
| 1071 | bfd_elf_generic_reloc, /* special_function */ |
| 1072 | "R_MIPS_GOT_OFST", /* name */ |
| 1073 | false, /* partial_inplace */ |
| 1074 | 0, /* src_mask */ |
| 1075 | 0x0000ffff, /* dst_mask */ |
| 1076 | false), /* pcrel_offset */ |
| 1077 | |
| 1078 | /* High 16 bits of displacement in global offset table. */ |
| 1079 | /* FIXME: Not handled correctly. */ |
| 1080 | HOWTO (R_MIPS_GOT_HI16, /* type */ |
| 1081 | 0, /* rightshift */ |
| 1082 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1083 | 16, /* bitsize */ |
| 1084 | false, /* pc_relative */ |
| 1085 | 0, /* bitpos */ |
| 1086 | complain_overflow_dont, /* complain_on_overflow */ |
| 1087 | bfd_elf_generic_reloc, /* special_function */ |
| 1088 | "R_MIPS_GOT_HI16", /* name */ |
| 1089 | false, /* partial_inplace */ |
| 1090 | 0, /* src_mask */ |
| 1091 | 0x0000ffff, /* dst_mask */ |
| 1092 | false), /* pcrel_offset */ |
| 1093 | |
| 1094 | /* Low 16 bits of displacement in global offset table. */ |
| 1095 | /* FIXME: Not handled correctly. */ |
| 1096 | HOWTO (R_MIPS_GOT_LO16, /* type */ |
| 1097 | 0, /* rightshift */ |
| 1098 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1099 | 16, /* bitsize */ |
| 1100 | false, /* pc_relative */ |
| 1101 | 0, /* bitpos */ |
| 1102 | complain_overflow_dont, /* complain_on_overflow */ |
| 1103 | bfd_elf_generic_reloc, /* special_function */ |
| 1104 | "R_MIPS_GOT_LO16", /* name */ |
| 1105 | false, /* partial_inplace */ |
| 1106 | 0, /* src_mask */ |
| 1107 | 0x0000ffff, /* dst_mask */ |
| 1108 | false), /* pcrel_offset */ |
| 1109 | |
| 1110 | /* 64 bit substraction. */ |
| 1111 | /* FIXME: Not handled correctly. */ |
| 1112 | HOWTO (R_MIPS_SUB, /* type */ |
| 1113 | 0, /* rightshift */ |
| 1114 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1115 | 64, /* bitsize */ |
| 1116 | false, /* pc_relative */ |
| 1117 | 0, /* bitpos */ |
| 1118 | complain_overflow_dont, /* complain_on_overflow */ |
| 1119 | bfd_elf_generic_reloc, /* special_function */ |
| 1120 | "R_MIPS_SUB", /* name */ |
| 1121 | false, /* partial_inplace */ |
| 1122 | 0, /* src_mask */ |
| 1123 | MINUS_ONE, /* dst_mask */ |
| 1124 | false), /* pcrel_offset */ |
| 1125 | |
| 1126 | /* Insert the addend as an instruction. */ |
| 1127 | /* FIXME: Not handled correctly. */ |
| 1128 | HOWTO (R_MIPS_INSERT_A, /* type */ |
| 1129 | 0, /* rightshift */ |
| 1130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1131 | 32, /* bitsize */ |
| 1132 | false, /* pc_relative */ |
| 1133 | 0, /* bitpos */ |
| 1134 | complain_overflow_dont, /* complain_on_overflow */ |
| 1135 | bfd_elf_generic_reloc, /* special_function */ |
| 1136 | "R_MIPS_INSERT_A", /* name */ |
| 1137 | false, /* partial_inplace */ |
| 1138 | 0, /* src_mask */ |
| 1139 | 0xffffffff, /* dst_mask */ |
| 1140 | false), /* pcrel_offset */ |
| 1141 | |
| 1142 | /* Insert the addend as an instruction, and change all relocations |
| 1143 | to refer to the old instruction at the address. */ |
| 1144 | /* FIXME: Not handled correctly. */ |
| 1145 | HOWTO (R_MIPS_INSERT_B, /* type */ |
| 1146 | 0, /* rightshift */ |
| 1147 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1148 | 32, /* bitsize */ |
| 1149 | false, /* pc_relative */ |
| 1150 | 0, /* bitpos */ |
| 1151 | complain_overflow_dont, /* complain_on_overflow */ |
| 1152 | bfd_elf_generic_reloc, /* special_function */ |
| 1153 | "R_MIPS_INSERT_B", /* name */ |
| 1154 | false, /* partial_inplace */ |
| 1155 | 0, /* src_mask */ |
| 1156 | 0xffffffff, /* dst_mask */ |
| 1157 | false), /* pcrel_offset */ |
| 1158 | |
| 1159 | /* Delete a 32 bit instruction. */ |
| 1160 | /* FIXME: Not handled correctly. */ |
| 1161 | HOWTO (R_MIPS_DELETE, /* type */ |
| 1162 | 0, /* rightshift */ |
| 1163 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1164 | 32, /* bitsize */ |
| 1165 | false, /* pc_relative */ |
| 1166 | 0, /* bitpos */ |
| 1167 | complain_overflow_dont, /* complain_on_overflow */ |
| 1168 | bfd_elf_generic_reloc, /* special_function */ |
| 1169 | "R_MIPS_DELETE", /* name */ |
| 1170 | false, /* partial_inplace */ |
| 1171 | 0, /* src_mask */ |
| 1172 | 0xffffffff, /* dst_mask */ |
| 1173 | false), /* pcrel_offset */ |
| 1174 | |
| 1175 | /* Get the higher value of a 64 bit addend. */ |
| 1176 | HOWTO (R_MIPS_HIGHER, /* type */ |
| 1177 | 0, /* rightshift */ |
| 1178 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1179 | 16, /* bitsize */ |
| 1180 | false, /* pc_relative */ |
| 1181 | 0, /* bitpos */ |
| 1182 | complain_overflow_dont, /* complain_on_overflow */ |
| 1183 | bfd_elf_generic_reloc, /* special_function */ |
| 1184 | "R_MIPS_HIGHER", /* name */ |
| 1185 | false, /* partial_inplace */ |
| 1186 | 0, /* src_mask */ |
| 1187 | 0x0000ffff, /* dst_mask */ |
| 1188 | false), /* pcrel_offset */ |
| 1189 | |
| 1190 | /* Get the highest value of a 64 bit addend. */ |
| 1191 | HOWTO (R_MIPS_HIGHEST, /* type */ |
| 1192 | 0, /* rightshift */ |
| 1193 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1194 | 16, /* bitsize */ |
| 1195 | false, /* pc_relative */ |
| 1196 | 0, /* bitpos */ |
| 1197 | complain_overflow_dont, /* complain_on_overflow */ |
| 1198 | bfd_elf_generic_reloc, /* special_function */ |
| 1199 | "R_MIPS_HIGHEST", /* name */ |
| 1200 | false, /* partial_inplace */ |
| 1201 | 0, /* src_mask */ |
| 1202 | 0x0000ffff, /* dst_mask */ |
| 1203 | false), /* pcrel_offset */ |
| 1204 | |
| 1205 | /* High 16 bits of displacement in global offset table. */ |
| 1206 | /* FIXME: Not handled correctly. */ |
| 1207 | HOWTO (R_MIPS_CALL_HI16, /* type */ |
| 1208 | 0, /* rightshift */ |
| 1209 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1210 | 16, /* bitsize */ |
| 1211 | false, /* pc_relative */ |
| 1212 | 0, /* bitpos */ |
| 1213 | complain_overflow_dont, /* complain_on_overflow */ |
| 1214 | bfd_elf_generic_reloc, /* special_function */ |
| 1215 | "R_MIPS_CALL_HI16", /* name */ |
| 1216 | false, /* partial_inplace */ |
| 1217 | 0, /* src_mask */ |
| 1218 | 0x0000ffff, /* dst_mask */ |
| 1219 | false), /* pcrel_offset */ |
| 1220 | |
| 1221 | /* Low 16 bits of displacement in global offset table. */ |
| 1222 | /* FIXME: Not handled correctly. */ |
| 1223 | HOWTO (R_MIPS_CALL_LO16, /* type */ |
| 1224 | 0, /* rightshift */ |
| 1225 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1226 | 16, /* bitsize */ |
| 1227 | false, /* pc_relative */ |
| 1228 | 0, /* bitpos */ |
| 1229 | complain_overflow_dont, /* complain_on_overflow */ |
| 1230 | bfd_elf_generic_reloc, /* special_function */ |
| 1231 | "R_MIPS_CALL_LO16", /* name */ |
| 1232 | false, /* partial_inplace */ |
| 1233 | 0, /* src_mask */ |
| 1234 | 0x0000ffff, /* dst_mask */ |
| 1235 | false), /* pcrel_offset */ |
| 1236 | |
| 1237 | /* Section displacement, used by an associated event location section. */ |
| 1238 | /* FIXME: Not handled correctly. */ |
| 1239 | HOWTO (R_MIPS_SCN_DISP, /* type */ |
| 1240 | 0, /* rightshift */ |
| 1241 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1242 | 32, /* bitsize */ |
| 1243 | false, /* pc_relative */ |
| 1244 | 0, /* bitpos */ |
| 1245 | complain_overflow_dont, /* complain_on_overflow */ |
| 1246 | bfd_elf_generic_reloc, /* special_function */ |
| 1247 | "R_MIPS_SCN_DISP", /* name */ |
| 1248 | false, /* partial_inplace */ |
| 1249 | 0, /* src_mask */ |
| 1250 | 0xffffffff, /* dst_mask */ |
| 1251 | false), /* pcrel_offset */ |
| 1252 | |
| 1253 | HOWTO (R_MIPS_REL16, /* type */ |
| 1254 | 0, /* rightshift */ |
| 1255 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1256 | 16, /* bitsize */ |
| 1257 | false, /* pc_relative */ |
| 1258 | 0, /* bitpos */ |
| 1259 | complain_overflow_signed, /* complain_on_overflow */ |
| 1260 | bfd_elf_generic_reloc, /* special_function */ |
| 1261 | "R_MIPS_REL16", /* name */ |
| 1262 | false, /* partial_inplace */ |
| 1263 | 0, /* src_mask */ |
| 1264 | 0xffff, /* dst_mask */ |
| 1265 | false), /* pcrel_offset */ |
| 1266 | |
| 1267 | /* These two are obsolete. */ |
| 1268 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), |
| 1269 | EMPTY_HOWTO (R_MIPS_PJUMP), |
| 1270 | |
| 1271 | /* Similiar to R_MIPS_REL32, but used for relocations in a GOT section. |
| 1272 | It must be used for multigot GOT's (and only there). */ |
| 1273 | HOWTO (R_MIPS_RELGOT, /* type */ |
| 1274 | 0, /* rightshift */ |
| 1275 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1276 | 32, /* bitsize */ |
| 1277 | false, /* pc_relative */ |
| 1278 | 0, /* bitpos */ |
| 1279 | complain_overflow_dont, /* complain_on_overflow */ |
| 1280 | bfd_elf_generic_reloc, /* special_function */ |
| 1281 | "R_MIPS_RELGOT", /* name */ |
| 1282 | false, /* partial_inplace */ |
| 1283 | 0, /* src_mask */ |
| 1284 | 0xffffffff, /* dst_mask */ |
| 1285 | false), /* pcrel_offset */ |
| 1286 | |
| 1287 | /* Protected jump conversion. This is an optimization hint. No |
| 1288 | relocation is required for correctness. */ |
| 1289 | HOWTO (R_MIPS_JALR, /* type */ |
| 1290 | 0, /* rightshift */ |
| 1291 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1292 | 32, /* bitsize */ |
| 1293 | false, /* pc_relative */ |
| 1294 | 0, /* bitpos */ |
| 1295 | complain_overflow_dont, /* complain_on_overflow */ |
| 1296 | bfd_elf_generic_reloc, /* special_function */ |
| 1297 | "R_MIPS_JALR", /* name */ |
| 1298 | false, /* partial_inplace */ |
| 1299 | 0, /* src_mask */ |
| 1300 | 0x00000000, /* dst_mask */ |
| 1301 | false), /* pcrel_offset */ |
| 1302 | }; |
| 1303 | |
| 1304 | /* Swap in a MIPS 64-bit Rel reloc. */ |
| 1305 | |
| 1306 | static void |
| 1307 | mips_elf64_swap_reloc_in (abfd, src, dst) |
| 1308 | bfd *abfd; |
| 1309 | const Elf64_Mips_External_Rel *src; |
| 1310 | Elf64_Mips_Internal_Rel *dst; |
| 1311 | { |
| 1312 | dst->r_offset = H_GET_64 (abfd, src->r_offset); |
| 1313 | dst->r_sym = H_GET_32 (abfd, src->r_sym); |
| 1314 | dst->r_ssym = H_GET_8 (abfd, src->r_ssym); |
| 1315 | dst->r_type3 = H_GET_8 (abfd, src->r_type3); |
| 1316 | dst->r_type2 = H_GET_8 (abfd, src->r_type2); |
| 1317 | dst->r_type = H_GET_8 (abfd, src->r_type); |
| 1318 | } |
| 1319 | |
| 1320 | /* Swap in a MIPS 64-bit Rela reloc. */ |
| 1321 | |
| 1322 | static void |
| 1323 | mips_elf64_swap_reloca_in (abfd, src, dst) |
| 1324 | bfd *abfd; |
| 1325 | const Elf64_Mips_External_Rela *src; |
| 1326 | Elf64_Mips_Internal_Rela *dst; |
| 1327 | { |
| 1328 | dst->r_offset = H_GET_64 (abfd, src->r_offset); |
| 1329 | dst->r_sym = H_GET_32 (abfd, src->r_sym); |
| 1330 | dst->r_ssym = H_GET_8 (abfd, src->r_ssym); |
| 1331 | dst->r_type3 = H_GET_8 (abfd, src->r_type3); |
| 1332 | dst->r_type2 = H_GET_8 (abfd, src->r_type2); |
| 1333 | dst->r_type = H_GET_8 (abfd, src->r_type); |
| 1334 | dst->r_addend = H_GET_S64 (abfd, src->r_addend); |
| 1335 | } |
| 1336 | |
| 1337 | /* Swap out a MIPS 64-bit Rel reloc. */ |
| 1338 | |
| 1339 | static void |
| 1340 | mips_elf64_swap_reloc_out (abfd, src, dst) |
| 1341 | bfd *abfd; |
| 1342 | const Elf64_Mips_Internal_Rel *src; |
| 1343 | Elf64_Mips_External_Rel *dst; |
| 1344 | { |
| 1345 | H_PUT_64 (abfd, src->r_offset, dst->r_offset); |
| 1346 | H_PUT_32 (abfd, src->r_sym, dst->r_sym); |
| 1347 | H_PUT_8 (abfd, src->r_ssym, dst->r_ssym); |
| 1348 | H_PUT_8 (abfd, src->r_type3, dst->r_type3); |
| 1349 | H_PUT_8 (abfd, src->r_type2, dst->r_type2); |
| 1350 | H_PUT_8 (abfd, src->r_type, dst->r_type); |
| 1351 | } |
| 1352 | |
| 1353 | /* Swap out a MIPS 64-bit Rela reloc. */ |
| 1354 | |
| 1355 | static void |
| 1356 | mips_elf64_swap_reloca_out (abfd, src, dst) |
| 1357 | bfd *abfd; |
| 1358 | const Elf64_Mips_Internal_Rela *src; |
| 1359 | Elf64_Mips_External_Rela *dst; |
| 1360 | { |
| 1361 | H_PUT_64 (abfd, src->r_offset, dst->r_offset); |
| 1362 | H_PUT_32 (abfd, src->r_sym, dst->r_sym); |
| 1363 | H_PUT_8 (abfd, src->r_ssym, dst->r_ssym); |
| 1364 | H_PUT_8 (abfd, src->r_type3, dst->r_type3); |
| 1365 | H_PUT_8 (abfd, src->r_type2, dst->r_type2); |
| 1366 | H_PUT_8 (abfd, src->r_type, dst->r_type); |
| 1367 | H_PUT_S64 (abfd, src->r_addend, dst->r_addend); |
| 1368 | } |
| 1369 | |
| 1370 | /* Swap in a MIPS 64-bit Rel reloc. */ |
| 1371 | |
| 1372 | static void |
| 1373 | mips_elf64_be_swap_reloc_in (abfd, src, dst) |
| 1374 | bfd *abfd; |
| 1375 | const bfd_byte *src; |
| 1376 | Elf_Internal_Rel *dst; |
| 1377 | { |
| 1378 | Elf64_Mips_Internal_Rel mirel; |
| 1379 | |
| 1380 | mips_elf64_swap_reloc_in (abfd, |
| 1381 | (const Elf64_Mips_External_Rel *) src, |
| 1382 | &mirel); |
| 1383 | |
| 1384 | dst[0].r_offset = mirel.r_offset; |
| 1385 | dst[0].r_info = ELF64_R_INFO (mirel.r_sym, mirel.r_type); |
| 1386 | dst[1].r_offset = mirel.r_offset; |
| 1387 | dst[1].r_info = ELF64_R_INFO (mirel.r_ssym, mirel.r_type2); |
| 1388 | dst[2].r_offset = mirel.r_offset; |
| 1389 | dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirel.r_type3); |
| 1390 | } |
| 1391 | |
| 1392 | /* Swap in a MIPS 64-bit Rela reloc. */ |
| 1393 | |
| 1394 | static void |
| 1395 | mips_elf64_be_swap_reloca_in (abfd, src, dst) |
| 1396 | bfd *abfd; |
| 1397 | const bfd_byte *src; |
| 1398 | Elf_Internal_Rela *dst; |
| 1399 | { |
| 1400 | Elf64_Mips_Internal_Rela mirela; |
| 1401 | |
| 1402 | mips_elf64_swap_reloca_in (abfd, |
| 1403 | (const Elf64_Mips_External_Rela *) src, |
| 1404 | &mirela); |
| 1405 | |
| 1406 | dst[0].r_offset = mirela.r_offset; |
| 1407 | dst[0].r_info = ELF64_R_INFO (mirela.r_sym, mirela.r_type); |
| 1408 | dst[0].r_addend = mirela.r_addend; |
| 1409 | dst[1].r_offset = mirela.r_offset; |
| 1410 | dst[1].r_info = ELF64_R_INFO (mirela.r_ssym, mirela.r_type2); |
| 1411 | dst[1].r_addend = 0; |
| 1412 | dst[2].r_offset = mirela.r_offset; |
| 1413 | dst[2].r_info = ELF64_R_INFO (STN_UNDEF, mirela.r_type3); |
| 1414 | dst[2].r_addend = 0; |
| 1415 | } |
| 1416 | |
| 1417 | /* Swap out a MIPS 64-bit Rel reloc. */ |
| 1418 | |
| 1419 | static void |
| 1420 | mips_elf64_be_swap_reloc_out (abfd, src, dst) |
| 1421 | bfd *abfd; |
| 1422 | const Elf_Internal_Rel *src; |
| 1423 | bfd_byte *dst; |
| 1424 | { |
| 1425 | Elf64_Mips_Internal_Rel mirel; |
| 1426 | |
| 1427 | mirel.r_offset = src[0].r_offset; |
| 1428 | BFD_ASSERT(src[0].r_offset == src[1].r_offset); |
| 1429 | BFD_ASSERT(src[0].r_offset == src[2].r_offset); |
| 1430 | |
| 1431 | mirel.r_type = ELF64_MIPS_R_TYPE (src[0].r_info); |
| 1432 | mirel.r_sym = ELF64_R_SYM (src[0].r_info); |
| 1433 | mirel.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info); |
| 1434 | mirel.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info); |
| 1435 | mirel.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info); |
| 1436 | |
| 1437 | mips_elf64_swap_reloc_out (abfd, &mirel, |
| 1438 | (Elf64_Mips_External_Rel *) dst); |
| 1439 | } |
| 1440 | |
| 1441 | /* Swap out a MIPS 64-bit Rela reloc. */ |
| 1442 | |
| 1443 | static void |
| 1444 | mips_elf64_be_swap_reloca_out (abfd, src, dst) |
| 1445 | bfd *abfd; |
| 1446 | const Elf_Internal_Rela *src; |
| 1447 | bfd_byte *dst; |
| 1448 | { |
| 1449 | Elf64_Mips_Internal_Rela mirela; |
| 1450 | |
| 1451 | mirela.r_offset = src[0].r_offset; |
| 1452 | BFD_ASSERT(src[0].r_offset == src[1].r_offset); |
| 1453 | BFD_ASSERT(src[0].r_offset == src[2].r_offset); |
| 1454 | |
| 1455 | mirela.r_type = ELF64_MIPS_R_TYPE (src[0].r_info); |
| 1456 | mirela.r_sym = ELF64_R_SYM (src[0].r_info); |
| 1457 | mirela.r_addend = src[0].r_addend; |
| 1458 | BFD_ASSERT(src[1].r_addend == 0); |
| 1459 | BFD_ASSERT(src[2].r_addend == 0); |
| 1460 | |
| 1461 | mirela.r_type2 = ELF64_MIPS_R_TYPE2 (src[1].r_info); |
| 1462 | mirela.r_ssym = ELF64_MIPS_R_SSYM (src[1].r_info); |
| 1463 | mirela.r_type3 = ELF64_MIPS_R_TYPE3 (src[2].r_info); |
| 1464 | |
| 1465 | mips_elf64_swap_reloca_out (abfd, &mirela, |
| 1466 | (Elf64_Mips_External_Rela *) dst); |
| 1467 | } |
| 1468 | |
| 1469 | /* Calculate the %high function. */ |
| 1470 | |
| 1471 | static bfd_vma |
| 1472 | mips_elf64_high (value) |
| 1473 | bfd_vma value; |
| 1474 | { |
| 1475 | return ((value + (bfd_vma) 0x8000) >> 16) & 0xffff; |
| 1476 | } |
| 1477 | |
| 1478 | /* Calculate the %higher function. */ |
| 1479 | |
| 1480 | static bfd_vma |
| 1481 | mips_elf64_higher (value) |
| 1482 | bfd_vma value; |
| 1483 | { |
| 1484 | return ((value + (bfd_vma) 0x80008000) >> 32) & 0xffff; |
| 1485 | } |
| 1486 | |
| 1487 | /* Calculate the %highest function. */ |
| 1488 | |
| 1489 | static bfd_vma |
| 1490 | mips_elf64_highest (value) |
| 1491 | bfd_vma value; |
| 1492 | { |
| 1493 | return ((value + (bfd_vma) 0x800080008000) >> 48) & 0xffff; |
| 1494 | } |
| 1495 | |
| 1496 | /* Do a R_MIPS_HI16 relocation. */ |
| 1497 | |
| 1498 | bfd_reloc_status_type |
| 1499 | mips_elf64_hi16_reloc (abfd, |
| 1500 | reloc_entry, |
| 1501 | symbol, |
| 1502 | data, |
| 1503 | input_section, |
| 1504 | output_bfd, |
| 1505 | error_message) |
| 1506 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1507 | arelent *reloc_entry; |
| 1508 | asymbol *symbol; |
| 1509 | PTR data ATTRIBUTE_UNUSED; |
| 1510 | asection *input_section; |
| 1511 | bfd *output_bfd; |
| 1512 | char **error_message ATTRIBUTE_UNUSED; |
| 1513 | { |
| 1514 | /* If we're relocating, and this is an external symbol, we don't |
| 1515 | want to change anything. */ |
| 1516 | if (output_bfd != (bfd *) NULL |
| 1517 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1518 | && (! reloc_entry->howto->partial_inplace |
| 1519 | || reloc_entry->addend == 0)) |
| 1520 | { |
| 1521 | reloc_entry->address += input_section->output_offset; |
| 1522 | return bfd_reloc_ok; |
| 1523 | } |
| 1524 | |
| 1525 | if (((reloc_entry->addend & 0xffff) + 0x8000) & ~0xffff) |
| 1526 | reloc_entry->addend += 0x8000; |
| 1527 | |
| 1528 | return bfd_reloc_continue; |
| 1529 | } |
| 1530 | |
| 1531 | /* Do a R_MIPS_HIGHER relocation. */ |
| 1532 | |
| 1533 | bfd_reloc_status_type |
| 1534 | mips_elf64_higher_reloc (abfd, |
| 1535 | reloc_entry, |
| 1536 | symbol, |
| 1537 | data, |
| 1538 | input_section, |
| 1539 | output_bfd, |
| 1540 | error_message) |
| 1541 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1542 | arelent *reloc_entry; |
| 1543 | asymbol *symbol; |
| 1544 | PTR data ATTRIBUTE_UNUSED; |
| 1545 | asection *input_section; |
| 1546 | bfd *output_bfd; |
| 1547 | char **error_message ATTRIBUTE_UNUSED; |
| 1548 | { |
| 1549 | /* If we're relocating, and this is an external symbol, we don't |
| 1550 | want to change anything. */ |
| 1551 | if (output_bfd != (bfd *) NULL |
| 1552 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1553 | && (! reloc_entry->howto->partial_inplace |
| 1554 | || reloc_entry->addend == 0)) |
| 1555 | { |
| 1556 | reloc_entry->address += input_section->output_offset; |
| 1557 | return bfd_reloc_ok; |
| 1558 | } |
| 1559 | |
| 1560 | if (((reloc_entry->addend & 0xffffffff) + 0x80008000) |
| 1561 | & ~0xffffffff) |
| 1562 | reloc_entry->addend += 0x80008000; |
| 1563 | |
| 1564 | return bfd_reloc_continue; |
| 1565 | } |
| 1566 | |
| 1567 | /* Do a R_MIPS_HIGHEST relocation. */ |
| 1568 | |
| 1569 | bfd_reloc_status_type |
| 1570 | mips_elf64_highest_reloc (abfd, |
| 1571 | reloc_entry, |
| 1572 | symbol, |
| 1573 | data, |
| 1574 | input_section, |
| 1575 | output_bfd, |
| 1576 | error_message) |
| 1577 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1578 | arelent *reloc_entry; |
| 1579 | asymbol *symbol; |
| 1580 | PTR data ATTRIBUTE_UNUSED; |
| 1581 | asection *input_section; |
| 1582 | bfd *output_bfd; |
| 1583 | char **error_message ATTRIBUTE_UNUSED; |
| 1584 | { |
| 1585 | /* If we're relocating, and this is an external symbol, we don't |
| 1586 | want to change anything. */ |
| 1587 | if (output_bfd != (bfd *) NULL |
| 1588 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1589 | && (! reloc_entry->howto->partial_inplace |
| 1590 | || reloc_entry->addend == 0)) |
| 1591 | { |
| 1592 | reloc_entry->address += input_section->output_offset; |
| 1593 | return bfd_reloc_ok; |
| 1594 | } |
| 1595 | |
| 1596 | if (((reloc_entry->addend & 0xffffffffffff) + 0x800080008000) |
| 1597 | & ~0xffffffffffff) |
| 1598 | reloc_entry->addend += 0x800080008000; |
| 1599 | |
| 1600 | return bfd_reloc_continue; |
| 1601 | } |
| 1602 | |
| 1603 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
| 1604 | table used for PIC code. If the symbol is an external symbol, the |
| 1605 | instruction is modified to contain the offset of the appropriate |
| 1606 | entry in the global offset table. If the symbol is a section |
| 1607 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit |
| 1608 | addends are combined to form the real addend against the section |
| 1609 | symbol; the GOT16 is modified to contain the offset of an entry in |
| 1610 | the global offset table, and the LO16 is modified to offset it |
| 1611 | appropriately. Thus an offset larger than 16 bits requires a |
| 1612 | modified value in the global offset table. |
| 1613 | |
| 1614 | This implementation suffices for the assembler, but the linker does |
| 1615 | not yet know how to create global offset tables. */ |
| 1616 | |
| 1617 | bfd_reloc_status_type |
| 1618 | mips_elf64_got16_reloc (abfd, |
| 1619 | reloc_entry, |
| 1620 | symbol, |
| 1621 | data, |
| 1622 | input_section, |
| 1623 | output_bfd, |
| 1624 | error_message) |
| 1625 | bfd *abfd; |
| 1626 | arelent *reloc_entry; |
| 1627 | asymbol *symbol; |
| 1628 | PTR data; |
| 1629 | asection *input_section; |
| 1630 | bfd *output_bfd; |
| 1631 | char **error_message; |
| 1632 | { |
| 1633 | /* If we're relocating, and this an external symbol, we don't want |
| 1634 | to change anything. */ |
| 1635 | if (output_bfd != (bfd *) NULL |
| 1636 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1637 | && reloc_entry->addend == 0) |
| 1638 | { |
| 1639 | reloc_entry->address += input_section->output_offset; |
| 1640 | return bfd_reloc_ok; |
| 1641 | } |
| 1642 | |
| 1643 | /* If we're relocating, and this is a local symbol, we can handle it |
| 1644 | just like HI16. */ |
| 1645 | if (output_bfd != (bfd *) NULL |
| 1646 | && (symbol->flags & BSF_SECTION_SYM) != 0) |
| 1647 | return mips_elf64_hi16_reloc (abfd, reloc_entry, symbol, data, |
| 1648 | input_section, output_bfd, error_message); |
| 1649 | |
| 1650 | abort (); |
| 1651 | } |
| 1652 | |
| 1653 | /* Set the GP value for OUTPUT_BFD. Returns false if this is a |
| 1654 | dangerous relocation. */ |
| 1655 | |
| 1656 | static boolean |
| 1657 | mips_elf64_assign_gp (output_bfd, pgp) |
| 1658 | bfd *output_bfd; |
| 1659 | bfd_vma *pgp; |
| 1660 | { |
| 1661 | unsigned int count; |
| 1662 | asymbol **sym; |
| 1663 | unsigned int i; |
| 1664 | |
| 1665 | /* If we've already figured out what GP will be, just return it. */ |
| 1666 | *pgp = _bfd_get_gp_value (output_bfd); |
| 1667 | if (*pgp) |
| 1668 | return true; |
| 1669 | |
| 1670 | count = bfd_get_symcount (output_bfd); |
| 1671 | sym = bfd_get_outsymbols (output_bfd); |
| 1672 | |
| 1673 | /* The linker script will have created a symbol named `_gp' with the |
| 1674 | appropriate value. */ |
| 1675 | if (sym == (asymbol **) NULL) |
| 1676 | i = count; |
| 1677 | else |
| 1678 | { |
| 1679 | for (i = 0; i < count; i++, sym++) |
| 1680 | { |
| 1681 | register CONST char *name; |
| 1682 | |
| 1683 | name = bfd_asymbol_name (*sym); |
| 1684 | if (*name == '_' && strcmp (name, "_gp") == 0) |
| 1685 | { |
| 1686 | *pgp = bfd_asymbol_value (*sym); |
| 1687 | _bfd_set_gp_value (output_bfd, *pgp); |
| 1688 | break; |
| 1689 | } |
| 1690 | } |
| 1691 | } |
| 1692 | |
| 1693 | if (i >= count) |
| 1694 | { |
| 1695 | /* Only get the error once. */ |
| 1696 | *pgp = 4; |
| 1697 | _bfd_set_gp_value (output_bfd, *pgp); |
| 1698 | return false; |
| 1699 | } |
| 1700 | |
| 1701 | return true; |
| 1702 | } |
| 1703 | |
| 1704 | /* We have to figure out the gp value, so that we can adjust the |
| 1705 | symbol value correctly. We look up the symbol _gp in the output |
| 1706 | BFD. If we can't find it, we're stuck. We cache it in the ELF |
| 1707 | target data. We don't need to adjust the symbol value for an |
| 1708 | external symbol if we are producing relocateable output. */ |
| 1709 | |
| 1710 | static bfd_reloc_status_type |
| 1711 | mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, pgp) |
| 1712 | bfd *output_bfd; |
| 1713 | asymbol *symbol; |
| 1714 | boolean relocateable; |
| 1715 | char **error_message; |
| 1716 | bfd_vma *pgp; |
| 1717 | { |
| 1718 | if (bfd_is_und_section (symbol->section) |
| 1719 | && ! relocateable) |
| 1720 | { |
| 1721 | *pgp = 0; |
| 1722 | return bfd_reloc_undefined; |
| 1723 | } |
| 1724 | |
| 1725 | *pgp = _bfd_get_gp_value (output_bfd); |
| 1726 | if (*pgp == 0 |
| 1727 | && (! relocateable |
| 1728 | || (symbol->flags & BSF_SECTION_SYM) != 0)) |
| 1729 | { |
| 1730 | if (relocateable) |
| 1731 | { |
| 1732 | /* Make up a value. */ |
| 1733 | *pgp = symbol->section->output_section->vma + 0x4000; |
| 1734 | _bfd_set_gp_value (output_bfd, *pgp); |
| 1735 | } |
| 1736 | else if (!mips_elf64_assign_gp (output_bfd, pgp)) |
| 1737 | { |
| 1738 | *error_message = |
| 1739 | (char *) _("GP relative relocation when _gp not defined"); |
| 1740 | return bfd_reloc_dangerous; |
| 1741 | } |
| 1742 | } |
| 1743 | |
| 1744 | return bfd_reloc_ok; |
| 1745 | } |
| 1746 | |
| 1747 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
| 1748 | become the offset from the gp register. */ |
| 1749 | |
| 1750 | bfd_reloc_status_type |
| 1751 | mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 1752 | output_bfd, error_message) |
| 1753 | bfd *abfd; |
| 1754 | arelent *reloc_entry; |
| 1755 | asymbol *symbol; |
| 1756 | PTR data; |
| 1757 | asection *input_section; |
| 1758 | bfd *output_bfd; |
| 1759 | char **error_message; |
| 1760 | { |
| 1761 | boolean relocateable; |
| 1762 | bfd_reloc_status_type ret; |
| 1763 | bfd_vma gp; |
| 1764 | |
| 1765 | /* If we're relocating, and this is an external symbol with no |
| 1766 | addend, we don't want to change anything. We will only have an |
| 1767 | addend if this is a newly created reloc, not read from an ELF |
| 1768 | file. */ |
| 1769 | if (output_bfd != (bfd *) NULL |
| 1770 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1771 | && reloc_entry->addend == 0) |
| 1772 | { |
| 1773 | reloc_entry->address += input_section->output_offset; |
| 1774 | return bfd_reloc_ok; |
| 1775 | } |
| 1776 | |
| 1777 | if (output_bfd != (bfd *) NULL) |
| 1778 | relocateable = true; |
| 1779 | else |
| 1780 | { |
| 1781 | relocateable = false; |
| 1782 | output_bfd = symbol->section->output_section->owner; |
| 1783 | } |
| 1784 | |
| 1785 | ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, |
| 1786 | &gp); |
| 1787 | if (ret != bfd_reloc_ok) |
| 1788 | return ret; |
| 1789 | |
| 1790 | return gprel16_with_gp (abfd, symbol, reloc_entry, input_section, |
| 1791 | relocateable, data, gp); |
| 1792 | } |
| 1793 | |
| 1794 | static bfd_reloc_status_type |
| 1795 | gprel16_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, |
| 1796 | gp) |
| 1797 | bfd *abfd; |
| 1798 | asymbol *symbol; |
| 1799 | arelent *reloc_entry; |
| 1800 | asection *input_section; |
| 1801 | boolean relocateable; |
| 1802 | PTR data; |
| 1803 | bfd_vma gp; |
| 1804 | { |
| 1805 | bfd_vma relocation; |
| 1806 | unsigned long insn; |
| 1807 | unsigned long val; |
| 1808 | |
| 1809 | if (bfd_is_com_section (symbol->section)) |
| 1810 | relocation = 0; |
| 1811 | else |
| 1812 | relocation = symbol->value; |
| 1813 | |
| 1814 | relocation += symbol->section->output_section->vma; |
| 1815 | relocation += symbol->section->output_offset; |
| 1816 | |
| 1817 | if (reloc_entry->address > input_section->_cooked_size) |
| 1818 | return bfd_reloc_outofrange; |
| 1819 | |
| 1820 | insn = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 1821 | |
| 1822 | /* Set val to the offset into the section or symbol. */ |
| 1823 | if (reloc_entry->howto->src_mask == 0) |
| 1824 | { |
| 1825 | /* This case occurs with the 64-bit MIPS ELF ABI. */ |
| 1826 | val = reloc_entry->addend; |
| 1827 | } |
| 1828 | else |
| 1829 | { |
| 1830 | val = ((insn & 0xffff) + reloc_entry->addend) & 0xffff; |
| 1831 | if (val & 0x8000) |
| 1832 | val -= 0x10000; |
| 1833 | } |
| 1834 | |
| 1835 | /* Adjust val for the final section location and GP value. If we |
| 1836 | are producing relocateable output, we don't want to do this for |
| 1837 | an external symbol. */ |
| 1838 | if (! relocateable |
| 1839 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
| 1840 | val += relocation - gp; |
| 1841 | |
| 1842 | insn = (insn & ~0xffff) | (val & 0xffff); |
| 1843 | bfd_put_32 (abfd, insn, (bfd_byte *) data + reloc_entry->address); |
| 1844 | |
| 1845 | if (relocateable) |
| 1846 | reloc_entry->address += input_section->output_offset; |
| 1847 | |
| 1848 | else if ((long) val >= 0x8000 || (long) val < -0x8000) |
| 1849 | return bfd_reloc_overflow; |
| 1850 | |
| 1851 | return bfd_reloc_ok; |
| 1852 | } |
| 1853 | |
| 1854 | /* Do a R_MIPS_GPREL16 RELA relocation. */ |
| 1855 | |
| 1856 | bfd_reloc_status_type |
| 1857 | mips_elf64_gprel16_reloca (abfd, reloc_entry, symbol, data, input_section, |
| 1858 | output_bfd, error_message) |
| 1859 | bfd *abfd; |
| 1860 | arelent *reloc_entry; |
| 1861 | asymbol *symbol; |
| 1862 | PTR data ATTRIBUTE_UNUSED; |
| 1863 | asection *input_section; |
| 1864 | bfd *output_bfd; |
| 1865 | char **error_message; |
| 1866 | { |
| 1867 | boolean relocateable; |
| 1868 | bfd_vma gp; |
| 1869 | |
| 1870 | /* This works only for NewABI. */ |
| 1871 | BFD_ASSERT (reloc_entry->howto->src_mask == 0); |
| 1872 | |
| 1873 | /* If we're relocating, and this is an external symbol with no |
| 1874 | addend, we don't want to change anything. We will only have an |
| 1875 | addend if this is a newly created reloc, not read from an ELF |
| 1876 | file. */ |
| 1877 | if (output_bfd != (bfd *) NULL |
| 1878 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1879 | && reloc_entry->addend == 0) |
| 1880 | { |
| 1881 | reloc_entry->address += input_section->output_offset; |
| 1882 | return bfd_reloc_ok; |
| 1883 | } |
| 1884 | |
| 1885 | if (output_bfd != (bfd *) NULL) |
| 1886 | relocateable = true; |
| 1887 | else |
| 1888 | { |
| 1889 | relocateable = false; |
| 1890 | output_bfd = symbol->section->output_section->owner; |
| 1891 | } |
| 1892 | |
| 1893 | if (prev_reloc_address != reloc_entry->address) |
| 1894 | prev_reloc_address = reloc_entry->address; |
| 1895 | else |
| 1896 | { |
| 1897 | mips_elf64_final_gp (output_bfd, symbol, relocateable, error_message, |
| 1898 | &gp); |
| 1899 | prev_reloc_addend = reloc_entry->addend + reloc_entry->address - gp; |
| 1900 | if (symbol->flags & BSF_LOCAL) |
| 1901 | prev_reloc_addend += _bfd_get_gp_value (abfd); |
| 1902 | /*fprintf(stderr, "Addend: %lx, Next Addend: %lx\n", reloc_entry->addend, prev_reloc_addend);*/ |
| 1903 | } |
| 1904 | |
| 1905 | return bfd_reloc_ok; |
| 1906 | } |
| 1907 | |
| 1908 | /* Do a R_MIPS_LITERAL relocation. */ |
| 1909 | |
| 1910 | bfd_reloc_status_type |
| 1911 | mips_elf64_literal_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 1912 | output_bfd, error_message) |
| 1913 | bfd *abfd; |
| 1914 | arelent *reloc_entry; |
| 1915 | asymbol *symbol; |
| 1916 | PTR data; |
| 1917 | asection *input_section; |
| 1918 | bfd *output_bfd; |
| 1919 | char **error_message; |
| 1920 | { |
| 1921 | /* If we're relocating, and this is an external symbol, we don't |
| 1922 | want to change anything. */ |
| 1923 | if (output_bfd != (bfd *) NULL |
| 1924 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1925 | && (! reloc_entry->howto->partial_inplace |
| 1926 | || reloc_entry->addend == 0)) |
| 1927 | { |
| 1928 | reloc_entry->address += input_section->output_offset; |
| 1929 | return bfd_reloc_ok; |
| 1930 | } |
| 1931 | |
| 1932 | /* FIXME: The entries in the .lit8 and .lit4 sections should be merged. |
| 1933 | Currently we simply call mips_elf64_gprel16_reloc. */ |
| 1934 | return mips_elf64_gprel16_reloc (abfd, reloc_entry, symbol, data, |
| 1935 | input_section, output_bfd, error_message); |
| 1936 | } |
| 1937 | |
| 1938 | /* Do a R_MIPS_GPREL32 relocation. Is this 32 bit value the offset |
| 1939 | from the gp register? XXX */ |
| 1940 | |
| 1941 | bfd_reloc_status_type |
| 1942 | mips_elf64_gprel32_reloc (abfd, |
| 1943 | reloc_entry, |
| 1944 | symbol, |
| 1945 | data, |
| 1946 | input_section, |
| 1947 | output_bfd, |
| 1948 | error_message) |
| 1949 | bfd *abfd; |
| 1950 | arelent *reloc_entry; |
| 1951 | asymbol *symbol; |
| 1952 | PTR data; |
| 1953 | asection *input_section; |
| 1954 | bfd *output_bfd; |
| 1955 | char **error_message; |
| 1956 | { |
| 1957 | boolean relocateable; |
| 1958 | bfd_reloc_status_type ret; |
| 1959 | bfd_vma gp; |
| 1960 | bfd_vma relocation; |
| 1961 | unsigned long val; |
| 1962 | |
| 1963 | /* If we're relocating, and this is an external symbol with no |
| 1964 | addend, we don't want to change anything. We will only have an |
| 1965 | addend if this is a newly created reloc, not read from an ELF |
| 1966 | file. */ |
| 1967 | if (output_bfd != (bfd *) NULL |
| 1968 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1969 | && reloc_entry->addend == 0) |
| 1970 | { |
| 1971 | *error_message = (char *) |
| 1972 | _("32bits gp relative relocation occurs for an external symbol"); |
| 1973 | return bfd_reloc_outofrange; |
| 1974 | } |
| 1975 | |
| 1976 | if (output_bfd != (bfd *) NULL) |
| 1977 | { |
| 1978 | relocateable = true; |
| 1979 | gp = _bfd_get_gp_value (output_bfd); |
| 1980 | } |
| 1981 | else |
| 1982 | { |
| 1983 | relocateable = false; |
| 1984 | output_bfd = symbol->section->output_section->owner; |
| 1985 | |
| 1986 | ret = mips_elf64_final_gp (output_bfd, symbol, relocateable, |
| 1987 | error_message, &gp); |
| 1988 | if (ret != bfd_reloc_ok) |
| 1989 | return ret; |
| 1990 | } |
| 1991 | |
| 1992 | if (bfd_is_com_section (symbol->section)) |
| 1993 | relocation = 0; |
| 1994 | else |
| 1995 | relocation = symbol->value; |
| 1996 | |
| 1997 | relocation += symbol->section->output_section->vma; |
| 1998 | relocation += symbol->section->output_offset; |
| 1999 | |
| 2000 | if (reloc_entry->address > input_section->_cooked_size) |
| 2001 | return bfd_reloc_outofrange; |
| 2002 | |
| 2003 | if (reloc_entry->howto->src_mask == 0) |
| 2004 | { |
| 2005 | /* This case arises with the 64-bit MIPS ELF ABI. */ |
| 2006 | val = 0; |
| 2007 | } |
| 2008 | else |
| 2009 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 2010 | |
| 2011 | /* Set val to the offset into the section or symbol. */ |
| 2012 | val += reloc_entry->addend; |
| 2013 | |
| 2014 | /* Adjust val for the final section location and GP value. If we |
| 2015 | are producing relocateable output, we don't want to do this for |
| 2016 | an external symbol. */ |
| 2017 | if (! relocateable |
| 2018 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
| 2019 | val += relocation - gp; |
| 2020 | |
| 2021 | bfd_put_32 (abfd, val, (bfd_byte *) data + reloc_entry->address); |
| 2022 | |
| 2023 | if (relocateable) |
| 2024 | reloc_entry->address += input_section->output_offset; |
| 2025 | |
| 2026 | return bfd_reloc_ok; |
| 2027 | } |
| 2028 | |
| 2029 | /* Do a R_MIPS_SHIFT6 relocation. The MSB of the shift is stored at bit 2, |
| 2030 | the rest is at bits 6-10. The bitpos alredy got right by the howto. */ |
| 2031 | |
| 2032 | bfd_reloc_status_type |
| 2033 | mips_elf64_shift6_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 2034 | output_bfd, error_message) |
| 2035 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2036 | arelent *reloc_entry; |
| 2037 | asymbol *symbol; |
| 2038 | PTR data ATTRIBUTE_UNUSED; |
| 2039 | asection *input_section; |
| 2040 | bfd *output_bfd; |
| 2041 | char **error_message ATTRIBUTE_UNUSED; |
| 2042 | { |
| 2043 | /* If we're relocating, and this is an external symbol, we don't |
| 2044 | want to change anything. */ |
| 2045 | if (output_bfd != (bfd *) NULL |
| 2046 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 2047 | && (! reloc_entry->howto->partial_inplace |
| 2048 | || reloc_entry->addend == 0)) |
| 2049 | { |
| 2050 | reloc_entry->address += input_section->output_offset; |
| 2051 | return bfd_reloc_ok; |
| 2052 | } |
| 2053 | |
| 2054 | reloc_entry->addend = (reloc_entry->addend & 0x00007c0) |
| 2055 | | (reloc_entry->addend & 0x00000800) >> 9; |
| 2056 | |
| 2057 | return bfd_reloc_continue; |
| 2058 | } |
| 2059 | |
| 2060 | static int |
| 2061 | mips_elf64_additional_program_headers (abfd) |
| 2062 | bfd *abfd; |
| 2063 | { |
| 2064 | int ret = 0; |
| 2065 | |
| 2066 | /* See if we need a PT_MIPS_OPTIONS segment. */ |
| 2067 | if (bfd_get_section_by_name (abfd, ".MIPS.options")) |
| 2068 | ++ret; |
| 2069 | |
| 2070 | return ret; |
| 2071 | } |
| 2072 | |
| 2073 | /* Given a BFD reloc type, return a howto structure. */ |
| 2074 | |
| 2075 | static reloc_howto_type * |
| 2076 | mips_elf64_reloc_type_lookup (abfd, code) |
| 2077 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2078 | bfd_reloc_code_real_type code; |
| 2079 | { |
| 2080 | /* FIXME: We default to RELA here instead of choosing the right |
| 2081 | relocation variant. */ |
| 2082 | reloc_howto_type *howto_table = mips_elf64_howto_table_rela; |
| 2083 | |
| 2084 | switch (code) |
| 2085 | { |
| 2086 | case BFD_RELOC_NONE: |
| 2087 | return &howto_table[R_MIPS_NONE]; |
| 2088 | case BFD_RELOC_16: |
| 2089 | return &howto_table[R_MIPS_16]; |
| 2090 | case BFD_RELOC_32: |
| 2091 | return &howto_table[R_MIPS_32]; |
| 2092 | case BFD_RELOC_64: |
| 2093 | case BFD_RELOC_CTOR: |
| 2094 | /* We need to handle these specially. Select the right |
| 2095 | relocation (R_MIPS_32 or R_MIPS_64) based on the |
| 2096 | size of addresses on this architecture. */ |
| 2097 | if (bfd_arch_bits_per_address (abfd) == 32) |
| 2098 | return &howto_table[R_MIPS_32]; |
| 2099 | else |
| 2100 | return &howto_table[R_MIPS_64]; |
| 2101 | |
| 2102 | case BFD_RELOC_16_PCREL: |
| 2103 | return &howto_table[R_MIPS_PC16]; |
| 2104 | case BFD_RELOC_HI16_S: |
| 2105 | return &howto_table[R_MIPS_HI16]; |
| 2106 | case BFD_RELOC_LO16: |
| 2107 | return &howto_table[R_MIPS_LO16]; |
| 2108 | case BFD_RELOC_GPREL16: |
| 2109 | return &howto_table[R_MIPS_GPREL16]; |
| 2110 | case BFD_RELOC_GPREL32: |
| 2111 | return &howto_table[R_MIPS_GPREL32]; |
| 2112 | case BFD_RELOC_MIPS_JMP: |
| 2113 | return &howto_table[R_MIPS_26]; |
| 2114 | case BFD_RELOC_MIPS_LITERAL: |
| 2115 | return &howto_table[R_MIPS_LITERAL]; |
| 2116 | case BFD_RELOC_MIPS_GOT16: |
| 2117 | return &howto_table[R_MIPS_GOT16]; |
| 2118 | case BFD_RELOC_MIPS_CALL16: |
| 2119 | return &howto_table[R_MIPS_CALL16]; |
| 2120 | case BFD_RELOC_MIPS_SHIFT5: |
| 2121 | return &howto_table[R_MIPS_SHIFT5]; |
| 2122 | case BFD_RELOC_MIPS_SHIFT6: |
| 2123 | return &howto_table[R_MIPS_SHIFT6]; |
| 2124 | case BFD_RELOC_MIPS_GOT_DISP: |
| 2125 | return &howto_table[R_MIPS_GOT_DISP]; |
| 2126 | case BFD_RELOC_MIPS_GOT_PAGE: |
| 2127 | return &howto_table[R_MIPS_GOT_PAGE]; |
| 2128 | case BFD_RELOC_MIPS_GOT_OFST: |
| 2129 | return &howto_table[R_MIPS_GOT_OFST]; |
| 2130 | case BFD_RELOC_MIPS_GOT_HI16: |
| 2131 | return &howto_table[R_MIPS_GOT_HI16]; |
| 2132 | case BFD_RELOC_MIPS_GOT_LO16: |
| 2133 | return &howto_table[R_MIPS_GOT_LO16]; |
| 2134 | case BFD_RELOC_MIPS_SUB: |
| 2135 | return &howto_table[R_MIPS_SUB]; |
| 2136 | case BFD_RELOC_MIPS_INSERT_A: |
| 2137 | return &howto_table[R_MIPS_INSERT_A]; |
| 2138 | case BFD_RELOC_MIPS_INSERT_B: |
| 2139 | return &howto_table[R_MIPS_INSERT_B]; |
| 2140 | case BFD_RELOC_MIPS_DELETE: |
| 2141 | return &howto_table[R_MIPS_DELETE]; |
| 2142 | case BFD_RELOC_MIPS_HIGHEST: |
| 2143 | return &howto_table[R_MIPS_HIGHEST]; |
| 2144 | case BFD_RELOC_MIPS_HIGHER: |
| 2145 | return &howto_table[R_MIPS_HIGHER]; |
| 2146 | case BFD_RELOC_MIPS_CALL_HI16: |
| 2147 | return &howto_table[R_MIPS_CALL_HI16]; |
| 2148 | case BFD_RELOC_MIPS_CALL_LO16: |
| 2149 | return &howto_table[R_MIPS_CALL_LO16]; |
| 2150 | case BFD_RELOC_MIPS_SCN_DISP: |
| 2151 | return &howto_table[R_MIPS_SCN_DISP]; |
| 2152 | case BFD_RELOC_MIPS_REL16: |
| 2153 | return &howto_table[R_MIPS_REL16]; |
| 2154 | /* Use of R_MIPS_ADD_IMMEDIATE and R_MIPS_PJUMP is deprecated. */ |
| 2155 | case BFD_RELOC_MIPS_RELGOT: |
| 2156 | return &howto_table[R_MIPS_RELGOT]; |
| 2157 | case BFD_RELOC_MIPS_JALR: |
| 2158 | return &howto_table[R_MIPS_JALR]; |
| 2159 | /* |
| 2160 | case BFD_RELOC_MIPS16_JMP: |
| 2161 | return &elf_mips16_jump_howto; |
| 2162 | case BFD_RELOC_MIPS16_GPREL: |
| 2163 | return &elf_mips16_gprel_howto; |
| 2164 | case BFD_RELOC_VTABLE_INHERIT: |
| 2165 | return &elf_mips_gnu_vtinherit_howto; |
| 2166 | case BFD_RELOC_VTABLE_ENTRY: |
| 2167 | return &elf_mips_gnu_vtentry_howto; |
| 2168 | case BFD_RELOC_PCREL_HI16_S: |
| 2169 | return &elf_mips_gnu_rel_hi16; |
| 2170 | case BFD_RELOC_PCREL_LO16: |
| 2171 | return &elf_mips_gnu_rel_lo16; |
| 2172 | case BFD_RELOC_16_PCREL_S2: |
| 2173 | return &elf_mips_gnu_rel16_s2; |
| 2174 | case BFD_RELOC_64_PCREL: |
| 2175 | return &elf_mips_gnu_pcrel64; |
| 2176 | case BFD_RELOC_32_PCREL: |
| 2177 | return &elf_mips_gnu_pcrel32; |
| 2178 | */ |
| 2179 | default: |
| 2180 | bfd_set_error (bfd_error_bad_value); |
| 2181 | return NULL; |
| 2182 | } |
| 2183 | } |
| 2184 | |
| 2185 | /* Prevent relocation handling by bfd for MIPS ELF64. */ |
| 2186 | |
| 2187 | static void |
| 2188 | mips_elf64_info_to_howto_rel (abfd, cache_ptr, dst) |
| 2189 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2190 | arelent *cache_ptr ATTRIBUTE_UNUSED; |
| 2191 | Elf64_Internal_Rel *dst ATTRIBUTE_UNUSED; |
| 2192 | { |
| 2193 | BFD_ASSERT (0); |
| 2194 | } |
| 2195 | |
| 2196 | static void |
| 2197 | mips_elf64_info_to_howto_rela (abfd, cache_ptr, dst) |
| 2198 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2199 | arelent *cache_ptr ATTRIBUTE_UNUSED; |
| 2200 | Elf64_Internal_Rela *dst ATTRIBUTE_UNUSED; |
| 2201 | { |
| 2202 | BFD_ASSERT (0); |
| 2203 | } |
| 2204 | |
| 2205 | /* Since each entry in an SHT_REL or SHT_RELA section can represent up |
| 2206 | to three relocs, we must tell the user to allocate more space. */ |
| 2207 | |
| 2208 | static long |
| 2209 | mips_elf64_get_reloc_upper_bound (abfd, sec) |
| 2210 | bfd *abfd ATTRIBUTE_UNUSED; |
| 2211 | asection *sec; |
| 2212 | { |
| 2213 | return (sec->reloc_count * 3 + 1) * sizeof (arelent *); |
| 2214 | } |
| 2215 | |
| 2216 | /* Read the relocations from one reloc section. */ |
| 2217 | |
| 2218 | static boolean |
| 2219 | mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, rel_hdr) |
| 2220 | bfd *abfd; |
| 2221 | asection *asect; |
| 2222 | asymbol **symbols; |
| 2223 | const Elf_Internal_Shdr *rel_hdr; |
| 2224 | { |
| 2225 | PTR allocated = NULL; |
| 2226 | bfd_byte *native_relocs; |
| 2227 | arelent *relents; |
| 2228 | arelent *relent; |
| 2229 | bfd_vma count; |
| 2230 | bfd_vma i; |
| 2231 | int entsize; |
| 2232 | reloc_howto_type *howto_table; |
| 2233 | |
| 2234 | allocated = (PTR) bfd_malloc (rel_hdr->sh_size); |
| 2235 | if (allocated == NULL) |
| 2236 | return false; |
| 2237 | |
| 2238 | if (bfd_seek (abfd, rel_hdr->sh_offset, SEEK_SET) != 0 |
| 2239 | || (bfd_bread (allocated, rel_hdr->sh_size, abfd) != rel_hdr->sh_size)) |
| 2240 | goto error_return; |
| 2241 | |
| 2242 | native_relocs = (bfd_byte *) allocated; |
| 2243 | |
| 2244 | relents = asect->relocation + asect->reloc_count; |
| 2245 | |
| 2246 | entsize = rel_hdr->sh_entsize; |
| 2247 | BFD_ASSERT (entsize == sizeof (Elf64_Mips_External_Rel) |
| 2248 | || entsize == sizeof (Elf64_Mips_External_Rela)); |
| 2249 | |
| 2250 | count = rel_hdr->sh_size / entsize; |
| 2251 | |
| 2252 | if (entsize == sizeof (Elf64_Mips_External_Rel)) |
| 2253 | howto_table = mips_elf64_howto_table_rel; |
| 2254 | else |
| 2255 | howto_table = mips_elf64_howto_table_rela; |
| 2256 | |
| 2257 | relent = relents; |
| 2258 | for (i = 0; i < count; i++, native_relocs += entsize) |
| 2259 | { |
| 2260 | Elf64_Mips_Internal_Rela rela; |
| 2261 | boolean used_sym, used_ssym; |
| 2262 | int ir; |
| 2263 | |
| 2264 | if (entsize == sizeof (Elf64_Mips_External_Rela)) |
| 2265 | mips_elf64_swap_reloca_in (abfd, |
| 2266 | (Elf64_Mips_External_Rela *) native_relocs, |
| 2267 | &rela); |
| 2268 | else |
| 2269 | { |
| 2270 | Elf64_Mips_Internal_Rel rel; |
| 2271 | |
| 2272 | mips_elf64_swap_reloc_in (abfd, |
| 2273 | (Elf64_Mips_External_Rel *) native_relocs, |
| 2274 | &rel); |
| 2275 | rela.r_offset = rel.r_offset; |
| 2276 | rela.r_sym = rel.r_sym; |
| 2277 | rela.r_ssym = rel.r_ssym; |
| 2278 | rela.r_type3 = rel.r_type3; |
| 2279 | rela.r_type2 = rel.r_type2; |
| 2280 | rela.r_type = rel.r_type; |
| 2281 | rela.r_addend = 0; |
| 2282 | } |
| 2283 | |
| 2284 | /* Each entry represents up to three actual relocations. */ |
| 2285 | |
| 2286 | used_sym = false; |
| 2287 | used_ssym = false; |
| 2288 | for (ir = 0; ir < 3; ir++) |
| 2289 | { |
| 2290 | enum elf_mips_reloc_type type; |
| 2291 | |
| 2292 | switch (ir) |
| 2293 | { |
| 2294 | default: |
| 2295 | abort (); |
| 2296 | case 0: |
| 2297 | type = (enum elf_mips_reloc_type) rela.r_type; |
| 2298 | break; |
| 2299 | case 1: |
| 2300 | type = (enum elf_mips_reloc_type) rela.r_type2; |
| 2301 | break; |
| 2302 | case 2: |
| 2303 | type = (enum elf_mips_reloc_type) rela.r_type3; |
| 2304 | break; |
| 2305 | } |
| 2306 | |
| 2307 | if (type == R_MIPS_NONE) |
| 2308 | { |
| 2309 | /* There are no more relocations in this entry. If this |
| 2310 | is the first entry, we need to generate a dummy |
| 2311 | relocation so that the generic linker knows that |
| 2312 | there has been a break in the sequence of relocations |
| 2313 | applying to a particular address. */ |
| 2314 | if (ir == 0) |
| 2315 | { |
| 2316 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 2317 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 2318 | relent->address = rela.r_offset; |
| 2319 | else |
| 2320 | relent->address = rela.r_offset - asect->vma; |
| 2321 | relent->addend = 0; |
| 2322 | relent->howto = &howto_table[(int) R_MIPS_NONE]; |
| 2323 | ++relent; |
| 2324 | } |
| 2325 | break; |
| 2326 | } |
| 2327 | |
| 2328 | /* Some types require symbols, whereas some do not. */ |
| 2329 | switch (type) |
| 2330 | { |
| 2331 | case R_MIPS_NONE: |
| 2332 | case R_MIPS_LITERAL: |
| 2333 | case R_MIPS_INSERT_A: |
| 2334 | case R_MIPS_INSERT_B: |
| 2335 | case R_MIPS_DELETE: |
| 2336 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 2337 | break; |
| 2338 | |
| 2339 | default: |
| 2340 | if (! used_sym) |
| 2341 | { |
| 2342 | if (rela.r_sym == 0) |
| 2343 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 2344 | else |
| 2345 | { |
| 2346 | asymbol **ps, *s; |
| 2347 | |
| 2348 | ps = symbols + rela.r_sym - 1; |
| 2349 | s = *ps; |
| 2350 | if ((s->flags & BSF_SECTION_SYM) == 0) |
| 2351 | relent->sym_ptr_ptr = ps; |
| 2352 | else |
| 2353 | relent->sym_ptr_ptr = s->section->symbol_ptr_ptr; |
| 2354 | } |
| 2355 | |
| 2356 | used_sym = true; |
| 2357 | } |
| 2358 | else if (! used_ssym) |
| 2359 | { |
| 2360 | switch (rela.r_ssym) |
| 2361 | { |
| 2362 | case RSS_UNDEF: |
| 2363 | relent->sym_ptr_ptr = |
| 2364 | bfd_abs_section_ptr->symbol_ptr_ptr; |
| 2365 | break; |
| 2366 | |
| 2367 | case RSS_GP: |
| 2368 | case RSS_GP0: |
| 2369 | case RSS_LOC: |
| 2370 | /* FIXME: I think these need to be handled using |
| 2371 | special howto structures. */ |
| 2372 | BFD_ASSERT (0); |
| 2373 | break; |
| 2374 | |
| 2375 | default: |
| 2376 | BFD_ASSERT (0); |
| 2377 | break; |
| 2378 | } |
| 2379 | |
| 2380 | used_ssym = true; |
| 2381 | } |
| 2382 | else |
| 2383 | relent->sym_ptr_ptr = bfd_abs_section_ptr->symbol_ptr_ptr; |
| 2384 | |
| 2385 | break; |
| 2386 | } |
| 2387 | |
| 2388 | /* The address of an ELF reloc is section relative for an |
| 2389 | object file, and absolute for an executable file or |
| 2390 | shared library. The address of a BFD reloc is always |
| 2391 | section relative. */ |
| 2392 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 2393 | relent->address = rela.r_offset; |
| 2394 | else |
| 2395 | relent->address = rela.r_offset - asect->vma; |
| 2396 | |
| 2397 | relent->addend = rela.r_addend; |
| 2398 | |
| 2399 | relent->howto = &howto_table[(int) type]; |
| 2400 | |
| 2401 | ++relent; |
| 2402 | } |
| 2403 | } |
| 2404 | |
| 2405 | asect->reloc_count += relent - relents; |
| 2406 | |
| 2407 | if (allocated != NULL) |
| 2408 | free (allocated); |
| 2409 | |
| 2410 | return true; |
| 2411 | |
| 2412 | error_return: |
| 2413 | if (allocated != NULL) |
| 2414 | free (allocated); |
| 2415 | return false; |
| 2416 | } |
| 2417 | |
| 2418 | /* Read the relocations. On Irix 6, there can be two reloc sections |
| 2419 | associated with a single data section. */ |
| 2420 | |
| 2421 | static boolean |
| 2422 | mips_elf64_slurp_reloc_table (abfd, asect, symbols, dynamic) |
| 2423 | bfd *abfd; |
| 2424 | asection *asect; |
| 2425 | asymbol **symbols; |
| 2426 | boolean dynamic; |
| 2427 | { |
| 2428 | bfd_size_type amt; |
| 2429 | struct bfd_elf_section_data * const d = elf_section_data (asect); |
| 2430 | |
| 2431 | if (dynamic) |
| 2432 | { |
| 2433 | bfd_set_error (bfd_error_invalid_operation); |
| 2434 | return false; |
| 2435 | } |
| 2436 | |
| 2437 | if (asect->relocation != NULL |
| 2438 | || (asect->flags & SEC_RELOC) == 0 |
| 2439 | || asect->reloc_count == 0) |
| 2440 | return true; |
| 2441 | |
| 2442 | /* Allocate space for 3 arelent structures for each Rel structure. */ |
| 2443 | amt = asect->reloc_count; |
| 2444 | amt *= 3 * sizeof (arelent); |
| 2445 | asect->relocation = (arelent *) bfd_alloc (abfd, amt); |
| 2446 | if (asect->relocation == NULL) |
| 2447 | return false; |
| 2448 | |
| 2449 | /* The slurp_one_reloc_table routine increments reloc_count. */ |
| 2450 | asect->reloc_count = 0; |
| 2451 | |
| 2452 | if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, &d->rel_hdr)) |
| 2453 | return false; |
| 2454 | if (d->rel_hdr2 != NULL) |
| 2455 | { |
| 2456 | if (! mips_elf64_slurp_one_reloc_table (abfd, asect, symbols, |
| 2457 | d->rel_hdr2)) |
| 2458 | return false; |
| 2459 | } |
| 2460 | |
| 2461 | return true; |
| 2462 | } |
| 2463 | |
| 2464 | /* Write out the relocations. */ |
| 2465 | |
| 2466 | static void |
| 2467 | mips_elf64_write_relocs (abfd, sec, data) |
| 2468 | bfd *abfd; |
| 2469 | asection *sec; |
| 2470 | PTR data; |
| 2471 | { |
| 2472 | boolean *failedp = (boolean *) data; |
| 2473 | int count; |
| 2474 | Elf_Internal_Shdr *rel_hdr; |
| 2475 | unsigned int idx; |
| 2476 | |
| 2477 | /* If we have already failed, don't do anything. */ |
| 2478 | if (*failedp) |
| 2479 | return; |
| 2480 | |
| 2481 | if ((sec->flags & SEC_RELOC) == 0) |
| 2482 | return; |
| 2483 | |
| 2484 | /* The linker backend writes the relocs out itself, and sets the |
| 2485 | reloc_count field to zero to inhibit writing them here. Also, |
| 2486 | sometimes the SEC_RELOC flag gets set even when there aren't any |
| 2487 | relocs. */ |
| 2488 | if (sec->reloc_count == 0) |
| 2489 | return; |
| 2490 | |
| 2491 | /* We can combine up to three relocs that refer to the same address |
| 2492 | if the latter relocs have no associated symbol. */ |
| 2493 | count = 0; |
| 2494 | for (idx = 0; idx < sec->reloc_count; idx++) |
| 2495 | { |
| 2496 | bfd_vma addr; |
| 2497 | unsigned int i; |
| 2498 | |
| 2499 | ++count; |
| 2500 | |
| 2501 | addr = sec->orelocation[idx]->address; |
| 2502 | for (i = 0; i < 2; i++) |
| 2503 | { |
| 2504 | arelent *r; |
| 2505 | |
| 2506 | if (idx + 1 >= sec->reloc_count) |
| 2507 | break; |
| 2508 | r = sec->orelocation[idx + 1]; |
| 2509 | if (r->address != addr |
| 2510 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| 2511 | || (*r->sym_ptr_ptr)->value != 0) |
| 2512 | break; |
| 2513 | |
| 2514 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ |
| 2515 | |
| 2516 | ++idx; |
| 2517 | } |
| 2518 | } |
| 2519 | |
| 2520 | rel_hdr = &elf_section_data (sec)->rel_hdr; |
| 2521 | |
| 2522 | /* Do the actual relocation. */ |
| 2523 | |
| 2524 | if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rel)) |
| 2525 | mips_elf64_write_rel (abfd, sec, rel_hdr, &count, data); |
| 2526 | else if (rel_hdr->sh_entsize == sizeof(Elf64_Mips_External_Rela)) |
| 2527 | mips_elf64_write_rela (abfd, sec, rel_hdr, &count, data); |
| 2528 | else |
| 2529 | BFD_ASSERT (0); |
| 2530 | } |
| 2531 | |
| 2532 | static void |
| 2533 | mips_elf64_write_rel (abfd, sec, rel_hdr, count, data) |
| 2534 | bfd *abfd; |
| 2535 | asection *sec; |
| 2536 | Elf_Internal_Shdr *rel_hdr; |
| 2537 | int *count; |
| 2538 | PTR data; |
| 2539 | { |
| 2540 | boolean *failedp = (boolean *) data; |
| 2541 | Elf64_Mips_External_Rel *ext_rel; |
| 2542 | unsigned int idx; |
| 2543 | asymbol *last_sym = 0; |
| 2544 | int last_sym_idx = 0; |
| 2545 | |
| 2546 | rel_hdr->sh_size = (bfd_vma)(rel_hdr->sh_entsize * *count); |
| 2547 | rel_hdr->contents = (PTR) bfd_alloc (abfd, rel_hdr->sh_size); |
| 2548 | if (rel_hdr->contents == NULL) |
| 2549 | { |
| 2550 | *failedp = true; |
| 2551 | return; |
| 2552 | } |
| 2553 | |
| 2554 | ext_rel = (Elf64_Mips_External_Rel *) rel_hdr->contents; |
| 2555 | for (idx = 0; idx < sec->reloc_count; idx++, ext_rel++) |
| 2556 | { |
| 2557 | arelent *ptr; |
| 2558 | Elf64_Mips_Internal_Rel int_rel; |
| 2559 | asymbol *sym; |
| 2560 | int n; |
| 2561 | unsigned int i; |
| 2562 | |
| 2563 | ptr = sec->orelocation[idx]; |
| 2564 | |
| 2565 | /* The address of an ELF reloc is section relative for an object |
| 2566 | file, and absolute for an executable file or shared library. |
| 2567 | The address of a BFD reloc is always section relative. */ |
| 2568 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 2569 | int_rel.r_offset = ptr->address; |
| 2570 | else |
| 2571 | int_rel.r_offset = ptr->address + sec->vma; |
| 2572 | |
| 2573 | sym = *ptr->sym_ptr_ptr; |
| 2574 | if (sym == last_sym) |
| 2575 | n = last_sym_idx; |
| 2576 | else |
| 2577 | { |
| 2578 | last_sym = sym; |
| 2579 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| 2580 | if (n < 0) |
| 2581 | { |
| 2582 | *failedp = true; |
| 2583 | return; |
| 2584 | } |
| 2585 | last_sym_idx = n; |
| 2586 | } |
| 2587 | |
| 2588 | int_rel.r_sym = n; |
| 2589 | int_rel.r_ssym = RSS_UNDEF; |
| 2590 | |
| 2591 | if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| 2592 | && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| 2593 | { |
| 2594 | *failedp = true; |
| 2595 | return; |
| 2596 | } |
| 2597 | |
| 2598 | int_rel.r_type = ptr->howto->type; |
| 2599 | int_rel.r_type2 = (int) R_MIPS_NONE; |
| 2600 | int_rel.r_type3 = (int) R_MIPS_NONE; |
| 2601 | |
| 2602 | for (i = 0; i < 2; i++) |
| 2603 | { |
| 2604 | arelent *r; |
| 2605 | |
| 2606 | if (idx + 1 >= sec->reloc_count) |
| 2607 | break; |
| 2608 | r = sec->orelocation[idx + 1]; |
| 2609 | if (r->address != ptr->address |
| 2610 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| 2611 | || (*r->sym_ptr_ptr)->value != 0) |
| 2612 | break; |
| 2613 | |
| 2614 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ |
| 2615 | |
| 2616 | if (i == 0) |
| 2617 | int_rel.r_type2 = r->howto->type; |
| 2618 | else |
| 2619 | int_rel.r_type3 = r->howto->type; |
| 2620 | |
| 2621 | ++idx; |
| 2622 | } |
| 2623 | |
| 2624 | mips_elf64_swap_reloc_out (abfd, &int_rel, ext_rel); |
| 2625 | } |
| 2626 | |
| 2627 | BFD_ASSERT (ext_rel - (Elf64_Mips_External_Rel *) rel_hdr->contents |
| 2628 | == *count); |
| 2629 | } |
| 2630 | |
| 2631 | static void |
| 2632 | mips_elf64_write_rela (abfd, sec, rela_hdr, count, data) |
| 2633 | bfd *abfd; |
| 2634 | asection *sec; |
| 2635 | Elf_Internal_Shdr *rela_hdr; |
| 2636 | int *count; |
| 2637 | PTR data; |
| 2638 | { |
| 2639 | boolean *failedp = (boolean *) data; |
| 2640 | Elf64_Mips_External_Rela *ext_rela; |
| 2641 | unsigned int idx; |
| 2642 | asymbol *last_sym = 0; |
| 2643 | int last_sym_idx = 0; |
| 2644 | |
| 2645 | rela_hdr->sh_size = (bfd_vma)(rela_hdr->sh_entsize * *count); |
| 2646 | rela_hdr->contents = (PTR) bfd_alloc (abfd, rela_hdr->sh_size); |
| 2647 | if (rela_hdr->contents == NULL) |
| 2648 | { |
| 2649 | *failedp = true; |
| 2650 | return; |
| 2651 | } |
| 2652 | |
| 2653 | ext_rela = (Elf64_Mips_External_Rela *) rela_hdr->contents; |
| 2654 | for (idx = 0; idx < sec->reloc_count; idx++, ext_rela++) |
| 2655 | { |
| 2656 | arelent *ptr; |
| 2657 | Elf64_Mips_Internal_Rela int_rela; |
| 2658 | asymbol *sym; |
| 2659 | int n; |
| 2660 | unsigned int i; |
| 2661 | |
| 2662 | ptr = sec->orelocation[idx]; |
| 2663 | |
| 2664 | /* The address of an ELF reloc is section relative for an object |
| 2665 | file, and absolute for an executable file or shared library. |
| 2666 | The address of a BFD reloc is always section relative. */ |
| 2667 | if ((abfd->flags & (EXEC_P | DYNAMIC)) == 0) |
| 2668 | int_rela.r_offset = ptr->address; |
| 2669 | else |
| 2670 | int_rela.r_offset = ptr->address + sec->vma; |
| 2671 | |
| 2672 | sym = *ptr->sym_ptr_ptr; |
| 2673 | if (sym == last_sym) |
| 2674 | n = last_sym_idx; |
| 2675 | else |
| 2676 | { |
| 2677 | last_sym = sym; |
| 2678 | n = _bfd_elf_symbol_from_bfd_symbol (abfd, &sym); |
| 2679 | if (n < 0) |
| 2680 | { |
| 2681 | *failedp = true; |
| 2682 | return; |
| 2683 | } |
| 2684 | last_sym_idx = n; |
| 2685 | } |
| 2686 | |
| 2687 | int_rela.r_sym = n; |
| 2688 | int_rela.r_addend = ptr->addend; |
| 2689 | int_rela.r_ssym = RSS_UNDEF; |
| 2690 | |
| 2691 | if ((*ptr->sym_ptr_ptr)->the_bfd->xvec != abfd->xvec |
| 2692 | && ! _bfd_elf_validate_reloc (abfd, ptr)) |
| 2693 | { |
| 2694 | *failedp = true; |
| 2695 | return; |
| 2696 | } |
| 2697 | |
| 2698 | int_rela.r_type = ptr->howto->type; |
| 2699 | int_rela.r_type2 = (int) R_MIPS_NONE; |
| 2700 | int_rela.r_type3 = (int) R_MIPS_NONE; |
| 2701 | |
| 2702 | for (i = 0; i < 2; i++) |
| 2703 | { |
| 2704 | arelent *r; |
| 2705 | |
| 2706 | if (idx + 1 >= sec->reloc_count) |
| 2707 | break; |
| 2708 | r = sec->orelocation[idx + 1]; |
| 2709 | if (r->address != ptr->address |
| 2710 | || ! bfd_is_abs_section ((*r->sym_ptr_ptr)->section) |
| 2711 | || (*r->sym_ptr_ptr)->value != 0) |
| 2712 | break; |
| 2713 | |
| 2714 | /* We can merge the reloc at IDX + 1 with the reloc at IDX. */ |
| 2715 | |
| 2716 | if (i == 0) |
| 2717 | int_rela.r_type2 = r->howto->type; |
| 2718 | else |
| 2719 | int_rela.r_type3 = r->howto->type; |
| 2720 | |
| 2721 | ++idx; |
| 2722 | } |
| 2723 | |
| 2724 | mips_elf64_swap_reloca_out (abfd, &int_rela, ext_rela); |
| 2725 | } |
| 2726 | |
| 2727 | BFD_ASSERT (ext_rela - (Elf64_Mips_External_Rela *) rela_hdr->contents |
| 2728 | == *count); |
| 2729 | } |
| 2730 | \f |
| 2731 | /* This structure is used to hold .got information when linking. It |
| 2732 | is stored in the tdata field of the bfd_elf_section_data structure. */ |
| 2733 | |
| 2734 | struct mips_elf64_got_info |
| 2735 | { |
| 2736 | /* The global symbol in the GOT with the lowest index in the dynamic |
| 2737 | symbol table. */ |
| 2738 | struct elf_link_hash_entry *global_gotsym; |
| 2739 | /* The number of global .got entries. */ |
| 2740 | unsigned int global_gotno; |
| 2741 | /* The number of local .got entries. */ |
| 2742 | unsigned int local_gotno; |
| 2743 | /* The number of local .got entries we have used. */ |
| 2744 | unsigned int assigned_gotno; |
| 2745 | }; |
| 2746 | |
| 2747 | /* The MIPS ELF64 linker needs additional information for each symbol in |
| 2748 | the global hash table. */ |
| 2749 | |
| 2750 | struct mips_elf64_link_hash_entry |
| 2751 | { |
| 2752 | struct elf_link_hash_entry root; |
| 2753 | |
| 2754 | /* External symbol information. */ |
| 2755 | EXTR esym; |
| 2756 | |
| 2757 | /* Number of R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 relocs against |
| 2758 | this symbol. */ |
| 2759 | unsigned int possibly_dynamic_relocs; |
| 2760 | |
| 2761 | /* If the R_MIPS_32, R_MIPS_REL32, or R_MIPS_64 reloc is against |
| 2762 | a readonly section. */ |
| 2763 | boolean readonly_reloc; |
| 2764 | |
| 2765 | /* The index of the first dynamic relocation (in the .rel.dyn |
| 2766 | section) against this symbol. */ |
| 2767 | unsigned int min_dyn_reloc_index; |
| 2768 | |
| 2769 | /* We must not create a stub for a symbol that has relocations |
| 2770 | related to taking the function's address, i.e. any but |
| 2771 | R_MIPS_CALL*16 ones -- see "MIPS ABI Supplement, 3rd Edition", |
| 2772 | p. 4-20. */ |
| 2773 | boolean no_fn_stub; |
| 2774 | |
| 2775 | /* If there is a stub that 32 bit functions should use to call this |
| 2776 | 16 bit function, this points to the section containing the stub. */ |
| 2777 | asection *fn_stub; |
| 2778 | |
| 2779 | /* Whether we need the fn_stub; this is set if this symbol appears |
| 2780 | in any relocs other than a 16 bit call. */ |
| 2781 | boolean need_fn_stub; |
| 2782 | |
| 2783 | /* If there is a stub that 16 bit functions should use to call this |
| 2784 | 32 bit function, this points to the section containing the stub. */ |
| 2785 | asection *call_stub; |
| 2786 | |
| 2787 | /* This is like the call_stub field, but it is used if the function |
| 2788 | being called returns a floating point value. */ |
| 2789 | asection *call_fp_stub; |
| 2790 | }; |
| 2791 | \f |
| 2792 | /* The mips16 compiler uses a couple of special sections to handle |
| 2793 | floating point arguments. |
| 2794 | |
| 2795 | Section names that look like .mips16.fn.FNNAME contain stubs that |
| 2796 | copy floating point arguments from the fp regs to the gp regs and |
| 2797 | then jump to FNNAME. If any 32 bit function calls FNNAME, the |
| 2798 | call should be redirected to the stub instead. If no 32 bit |
| 2799 | function calls FNNAME, the stub should be discarded. We need to |
| 2800 | consider any reference to the function, not just a call, because |
| 2801 | if the address of the function is taken we will need the stub, |
| 2802 | since the address might be passed to a 32 bit function. |
| 2803 | |
| 2804 | Section names that look like .mips16.call.FNNAME contain stubs |
| 2805 | that copy floating point arguments from the gp regs to the fp |
| 2806 | regs and then jump to FNNAME. If FNNAME is a 32 bit function, |
| 2807 | then any 16 bit function that calls FNNAME should be redirected |
| 2808 | to the stub instead. If FNNAME is not a 32 bit function, the |
| 2809 | stub should be discarded. |
| 2810 | |
| 2811 | .mips16.call.fp.FNNAME sections are similar, but contain stubs |
| 2812 | which call FNNAME and then copy the return value from the fp regs |
| 2813 | to the gp regs. These stubs store the return value in $18 while |
| 2814 | calling FNNAME; any function which might call one of these stubs |
| 2815 | must arrange to save $18 around the call. (This case is not |
| 2816 | needed for 32 bit functions that call 16 bit functions, because |
| 2817 | 16 bit functions always return floating point values in both |
| 2818 | $f0/$f1 and $2/$3.) |
| 2819 | |
| 2820 | Note that in all cases FNNAME might be defined statically. |
| 2821 | Therefore, FNNAME is not used literally. Instead, the relocation |
| 2822 | information will indicate which symbol the section is for. |
| 2823 | |
| 2824 | We record any stubs that we find in the symbol table. */ |
| 2825 | |
| 2826 | #define FN_STUB ".mips16.fn." |
| 2827 | #define CALL_STUB ".mips16.call." |
| 2828 | #define CALL_FP_STUB ".mips16.call.fp." |
| 2829 | |
| 2830 | /* MIPS ELF64 linker hash table. */ |
| 2831 | |
| 2832 | struct mips_elf64_link_hash_table |
| 2833 | { |
| 2834 | struct elf_link_hash_table root; |
| 2835 | /* This is set if we see any mips16 stub sections. */ |
| 2836 | boolean mips16_stubs_seen; |
| 2837 | }; |
| 2838 | |
| 2839 | /* Look up an entry in a MIPS ELF64 linker hash table. */ |
| 2840 | |
| 2841 | #define mips_elf64_link_hash_lookup(table, string, create, copy, follow) \ |
| 2842 | ((struct mips_elf64_link_hash_entry *) \ |
| 2843 | elf_link_hash_lookup (&(table)->root, (string), (create), \ |
| 2844 | (copy), (follow))) |
| 2845 | |
| 2846 | /* Traverse a MIPS ELF linker hash table. */ |
| 2847 | |
| 2848 | #define mips_elf64_link_hash_traverse(table, func, info) \ |
| 2849 | (elf_link_hash_traverse \ |
| 2850 | (&(table)->root, \ |
| 2851 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
| 2852 | (info))) |
| 2853 | |
| 2854 | /* Get the MIPS ELF64 linker hash table from a link_info structure. */ |
| 2855 | |
| 2856 | #define mips_elf64_hash_table(p) \ |
| 2857 | ((struct mips_elf64_link_hash_table *) ((p)->hash)) |
| 2858 | |
| 2859 | /* Create an entry in a MIPS ELF64 linker hash table. */ |
| 2860 | |
| 2861 | static struct bfd_hash_entry * |
| 2862 | mips_elf64_link_hash_newfunc (entry, table, string) |
| 2863 | struct bfd_hash_entry *entry; |
| 2864 | struct bfd_hash_table *table; |
| 2865 | const char *string; |
| 2866 | { |
| 2867 | struct mips_elf64_link_hash_entry *ret = |
| 2868 | (struct mips_elf64_link_hash_entry *) entry; |
| 2869 | |
| 2870 | /* Allocate the structure if it has not already been allocated by a |
| 2871 | subclass. */ |
| 2872 | if (ret == (struct mips_elf64_link_hash_entry *) NULL) |
| 2873 | ret = ((struct mips_elf64_link_hash_entry *) |
| 2874 | bfd_hash_allocate (table, |
| 2875 | sizeof (struct mips_elf64_link_hash_entry))); |
| 2876 | if (ret == (struct mips_elf64_link_hash_entry *) NULL) |
| 2877 | return (struct bfd_hash_entry *) ret; |
| 2878 | |
| 2879 | /* Call the allocation method of the superclass. */ |
| 2880 | ret = ((struct mips_elf64_link_hash_entry *) |
| 2881 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 2882 | table, string)); |
| 2883 | if (ret != (struct mips_elf64_link_hash_entry *) NULL) |
| 2884 | { |
| 2885 | /* Set local fields. */ |
| 2886 | memset (&ret->esym, 0, sizeof (EXTR)); |
| 2887 | /* We use -2 as a marker to indicate that the information has |
| 2888 | not been set. -1 means there is no associated ifd. */ |
| 2889 | ret->esym.ifd = -2; |
| 2890 | ret->possibly_dynamic_relocs = 0; |
| 2891 | ret->readonly_reloc = false; |
| 2892 | ret->min_dyn_reloc_index = 0; |
| 2893 | ret->no_fn_stub = false; |
| 2894 | ret->fn_stub = NULL; |
| 2895 | ret->need_fn_stub = false; |
| 2896 | ret->call_stub = NULL; |
| 2897 | ret->call_fp_stub = NULL; |
| 2898 | } |
| 2899 | |
| 2900 | return (struct bfd_hash_entry *) ret; |
| 2901 | } |
| 2902 | |
| 2903 | /* Create a MIPS ELF64 linker hash table. */ |
| 2904 | |
| 2905 | struct bfd_link_hash_table * |
| 2906 | mips_elf64_link_hash_table_create (abfd) |
| 2907 | bfd *abfd; |
| 2908 | { |
| 2909 | struct mips_elf64_link_hash_table *ret; |
| 2910 | |
| 2911 | ret = ((struct mips_elf64_link_hash_table *) |
| 2912 | bfd_alloc (abfd, sizeof (struct mips_elf64_link_hash_table))); |
| 2913 | if (ret == (struct mips_elf64_link_hash_table *) NULL) |
| 2914 | return NULL; |
| 2915 | |
| 2916 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 2917 | mips_elf64_link_hash_newfunc)) |
| 2918 | { |
| 2919 | bfd_release (abfd, ret); |
| 2920 | return NULL; |
| 2921 | } |
| 2922 | |
| 2923 | ret->mips16_stubs_seen = false; |
| 2924 | |
| 2925 | return &ret->root.root; |
| 2926 | } |
| 2927 | \f |
| 2928 | /* Returns the offset for the entry at the INDEXth position |
| 2929 | in the GOT. */ |
| 2930 | |
| 2931 | static bfd_vma |
| 2932 | mips_elf64_got_offset_from_index (dynobj, output_bfd, index) |
| 2933 | bfd *dynobj; |
| 2934 | bfd *output_bfd; |
| 2935 | bfd_vma index; |
| 2936 | { |
| 2937 | asection *sgot; |
| 2938 | bfd_vma gp; |
| 2939 | |
| 2940 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 2941 | gp = _bfd_get_gp_value (output_bfd); |
| 2942 | return (sgot->output_section->vma + sgot->output_offset + index - |
| 2943 | gp); |
| 2944 | } |
| 2945 | |
| 2946 | /* Returns the GOT information associated with the link indicated by |
| 2947 | INFO. If SGOTP is non-NULL, it is filled in with the GOT |
| 2948 | section. */ |
| 2949 | |
| 2950 | static struct mips_elf64_got_info * |
| 2951 | _mips_elf64_got_info (abfd, sgotp) |
| 2952 | bfd *abfd; |
| 2953 | asection **sgotp; |
| 2954 | { |
| 2955 | asection *sgot; |
| 2956 | struct mips_elf64_got_info *g; |
| 2957 | |
| 2958 | sgot = bfd_get_section_by_name (abfd, ".got"); |
| 2959 | BFD_ASSERT (sgot != NULL); |
| 2960 | BFD_ASSERT (elf_section_data (sgot) != NULL); |
| 2961 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; |
| 2962 | BFD_ASSERT (g != NULL); |
| 2963 | |
| 2964 | if (sgotp) |
| 2965 | *sgotp = sgot; |
| 2966 | return g; |
| 2967 | } |
| 2968 | |
| 2969 | /* Sign-extend VALUE, which has the indicated number of BITS. */ |
| 2970 | |
| 2971 | static bfd_vma |
| 2972 | mips_elf64_sign_extend (value, bits) |
| 2973 | bfd_vma value; |
| 2974 | int bits; |
| 2975 | { |
| 2976 | if (value & ((bfd_vma)1 << (bits - 1))) |
| 2977 | /* VALUE is negative. */ |
| 2978 | value |= ((bfd_vma) - 1) << bits; |
| 2979 | |
| 2980 | return value; |
| 2981 | } |
| 2982 | |
| 2983 | /* Return non-zero if the indicated VALUE has overflowed the maximum |
| 2984 | range expressable by a signed number with the indicated number of |
| 2985 | BITS. */ |
| 2986 | |
| 2987 | static boolean |
| 2988 | mips_elf64_overflow_p (value, bits) |
| 2989 | bfd_vma value; |
| 2990 | int bits; |
| 2991 | { |
| 2992 | bfd_signed_vma svalue = (bfd_signed_vma) value; |
| 2993 | |
| 2994 | if (svalue > (1 << (bits - 1)) - 1) |
| 2995 | /* The value is too big. */ |
| 2996 | return true; |
| 2997 | else if (svalue < -(1 << (bits - 1))) |
| 2998 | /* The value is too small. */ |
| 2999 | return true; |
| 3000 | |
| 3001 | /* All is well. */ |
| 3002 | return false; |
| 3003 | } |
| 3004 | \f |
| 3005 | /* Returns the GOT index for the global symbol indicated by H. */ |
| 3006 | |
| 3007 | static bfd_vma |
| 3008 | mips_elf64_global_got_index (abfd, h) |
| 3009 | bfd *abfd; |
| 3010 | struct elf_link_hash_entry *h; |
| 3011 | { |
| 3012 | bfd_vma index; |
| 3013 | asection *sgot; |
| 3014 | struct mips_elf64_got_info *g; |
| 3015 | |
| 3016 | g = _mips_elf64_got_info (abfd, &sgot); |
| 3017 | |
| 3018 | /* Once we determine the global GOT entry with the lowest dynamic |
| 3019 | symbol table index, we must put all dynamic symbols with greater |
| 3020 | indices into the GOT. That makes it easy to calculate the GOT |
| 3021 | offset. */ |
| 3022 | BFD_ASSERT (h->dynindx >= g->global_gotsym->dynindx); |
| 3023 | index = ((h->dynindx - g->global_gotsym->dynindx + g->local_gotno) |
| 3024 | * (get_elf_backend_data (abfd)->s->arch_size / 8)); |
| 3025 | BFD_ASSERT (index < sgot->_raw_size); |
| 3026 | |
| 3027 | return index; |
| 3028 | } |
| 3029 | |
| 3030 | struct mips_elf64_hash_sort_data |
| 3031 | { |
| 3032 | /* The symbol in the global GOT with the lowest dynamic symbol table |
| 3033 | index. */ |
| 3034 | struct elf_link_hash_entry *low; |
| 3035 | /* The least dynamic symbol table index corresponding to a symbol |
| 3036 | with a GOT entry. */ |
| 3037 | long min_got_dynindx; |
| 3038 | /* The greatest dynamic symbol table index not corresponding to a |
| 3039 | symbol without a GOT entry. */ |
| 3040 | long max_non_got_dynindx; |
| 3041 | }; |
| 3042 | |
| 3043 | /* If H needs a GOT entry, assign it the highest available dynamic |
| 3044 | index. Otherwise, assign it the lowest available dynamic |
| 3045 | index. */ |
| 3046 | |
| 3047 | static boolean |
| 3048 | mips_elf64_sort_hash_table_f (h, data) |
| 3049 | struct mips_elf64_link_hash_entry *h; |
| 3050 | PTR data; |
| 3051 | { |
| 3052 | struct mips_elf64_hash_sort_data *hsd |
| 3053 | = (struct mips_elf64_hash_sort_data *) data; |
| 3054 | |
| 3055 | /* Symbols without dynamic symbol table entries aren't interesting |
| 3056 | at all. */ |
| 3057 | if (h->root.dynindx == -1) |
| 3058 | return true; |
| 3059 | |
| 3060 | if (h->root.got.offset != 1) |
| 3061 | h->root.dynindx = hsd->max_non_got_dynindx++; |
| 3062 | else |
| 3063 | { |
| 3064 | h->root.dynindx = --hsd->min_got_dynindx; |
| 3065 | hsd->low = (struct elf_link_hash_entry *) h; |
| 3066 | } |
| 3067 | |
| 3068 | return true; |
| 3069 | } |
| 3070 | |
| 3071 | /* Sort the dynamic symbol table so that symbols that need GOT entries |
| 3072 | appear towards the end. This reduces the amount of GOT space |
| 3073 | required. MAX_LOCAL is used to set the number of local symbols |
| 3074 | known to be in the dynamic symbol table. During |
| 3075 | mips_elf64_size_dynamic_sections, this value is 1. Afterward, the |
| 3076 | section symbols are added and the count is higher. */ |
| 3077 | |
| 3078 | static boolean |
| 3079 | mips_elf64_sort_hash_table (info, max_local) |
| 3080 | struct bfd_link_info *info; |
| 3081 | unsigned long max_local; |
| 3082 | { |
| 3083 | struct mips_elf64_hash_sort_data hsd; |
| 3084 | struct mips_elf64_got_info *g; |
| 3085 | bfd *dynobj; |
| 3086 | |
| 3087 | dynobj = elf_hash_table (info)->dynobj; |
| 3088 | |
| 3089 | hsd.low = NULL; |
| 3090 | hsd.min_got_dynindx = elf_hash_table (info)->dynsymcount; |
| 3091 | hsd.max_non_got_dynindx = max_local; |
| 3092 | mips_elf64_link_hash_traverse (((struct mips_elf64_link_hash_table *) |
| 3093 | elf_hash_table (info)), |
| 3094 | mips_elf64_sort_hash_table_f, |
| 3095 | &hsd); |
| 3096 | |
| 3097 | /* There shoud have been enough room in the symbol table to |
| 3098 | accomodate both the GOT and non-GOT symbols. */ |
| 3099 | BFD_ASSERT (hsd.max_non_got_dynindx <= hsd.min_got_dynindx); |
| 3100 | |
| 3101 | /* Now we know which dynamic symbol has the lowest dynamic symbol |
| 3102 | table index in the GOT. */ |
| 3103 | g = _mips_elf64_got_info (dynobj, NULL); |
| 3104 | g->global_gotsym = hsd.low; |
| 3105 | |
| 3106 | return true; |
| 3107 | } |
| 3108 | \f |
| 3109 | #if 0 |
| 3110 | /* Swap in an MSYM entry. */ |
| 3111 | |
| 3112 | static void |
| 3113 | mips_elf64_swap_msym_in (abfd, ex, in) |
| 3114 | bfd *abfd; |
| 3115 | const Elf32_External_Msym *ex; |
| 3116 | Elf32_Internal_Msym *in; |
| 3117 | { |
| 3118 | in->ms_hash_value = H_GET_32 (abfd, ex->ms_hash_value); |
| 3119 | in->ms_info = H_GET_32 (abfd, ex->ms_info); |
| 3120 | } |
| 3121 | #endif |
| 3122 | /* Swap out an MSYM entry. */ |
| 3123 | |
| 3124 | static void |
| 3125 | mips_elf64_swap_msym_out (abfd, in, ex) |
| 3126 | bfd *abfd; |
| 3127 | const Elf32_Internal_Msym *in; |
| 3128 | Elf32_External_Msym *ex; |
| 3129 | { |
| 3130 | H_PUT_32 (abfd, in->ms_hash_value, ex->ms_hash_value); |
| 3131 | H_PUT_32 (abfd, in->ms_info, ex->ms_info); |
| 3132 | } |
| 3133 | \f |
| 3134 | /* Create a local GOT entry for VALUE. Return the index of the entry, |
| 3135 | or -1 if it could not be created. */ |
| 3136 | |
| 3137 | static bfd_vma |
| 3138 | mips_elf64_create_local_got_entry (abfd, g, sgot, value) |
| 3139 | bfd *abfd; |
| 3140 | struct mips_elf64_got_info *g; |
| 3141 | asection *sgot; |
| 3142 | bfd_vma value; |
| 3143 | { |
| 3144 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; |
| 3145 | |
| 3146 | if (g->assigned_gotno >= g->local_gotno) |
| 3147 | { |
| 3148 | /* We didn't allocate enough space in the GOT. */ |
| 3149 | (*_bfd_error_handler) |
| 3150 | (_("not enough GOT space for local GOT entries")); |
| 3151 | bfd_set_error (bfd_error_bad_value); |
| 3152 | return (bfd_vma) -1; |
| 3153 | } |
| 3154 | |
| 3155 | bfd_put_64 (abfd, value, (sgot->contents + got_size * g->assigned_gotno)); |
| 3156 | return got_size * g->assigned_gotno++; |
| 3157 | } |
| 3158 | |
| 3159 | /* Returns the GOT offset at which the indicated address can be found. |
| 3160 | If there is not yet a GOT entry for this value, create one. Returns |
| 3161 | -1 if no satisfactory GOT offset can be found. */ |
| 3162 | |
| 3163 | static bfd_vma |
| 3164 | mips_elf64_local_got_index (abfd, info, value) |
| 3165 | bfd *abfd; |
| 3166 | struct bfd_link_info *info; |
| 3167 | bfd_vma value; |
| 3168 | { |
| 3169 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; |
| 3170 | asection *sgot; |
| 3171 | struct mips_elf64_got_info *g; |
| 3172 | bfd_byte *entry; |
| 3173 | |
| 3174 | g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); |
| 3175 | |
| 3176 | /* Look to see if we already have an appropriate entry. */ |
| 3177 | for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); |
| 3178 | entry != sgot->contents + got_size * g->assigned_gotno; |
| 3179 | entry += got_size) |
| 3180 | { |
| 3181 | bfd_vma address = bfd_get_64 (abfd, entry); |
| 3182 | if (address == value) |
| 3183 | return entry - sgot->contents; |
| 3184 | } |
| 3185 | |
| 3186 | return mips_elf64_create_local_got_entry (abfd, g, sgot, value); |
| 3187 | } |
| 3188 | |
| 3189 | /* Find a GOT entry that is within 32KB of the VALUE. These entries |
| 3190 | are supposed to be placed at small offsets in the GOT, i.e., |
| 3191 | within 32KB of GP. Return the index into the GOT for this page, |
| 3192 | and store the offset from this entry to the desired address in |
| 3193 | OFFSETP, if it is non-NULL. */ |
| 3194 | |
| 3195 | static bfd_vma |
| 3196 | mips_elf64_got_page (abfd, info, value, offsetp) |
| 3197 | bfd *abfd; |
| 3198 | struct bfd_link_info *info; |
| 3199 | bfd_vma value; |
| 3200 | bfd_vma *offsetp; |
| 3201 | { |
| 3202 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; |
| 3203 | asection *sgot; |
| 3204 | struct mips_elf64_got_info *g; |
| 3205 | bfd_byte *entry; |
| 3206 | bfd_byte *last_entry; |
| 3207 | bfd_vma index = 0; |
| 3208 | bfd_vma address; |
| 3209 | |
| 3210 | g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); |
| 3211 | |
| 3212 | /* Look to see if we aleady have an appropriate entry. */ |
| 3213 | last_entry = sgot->contents + got_size * g->assigned_gotno; |
| 3214 | for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); |
| 3215 | entry != last_entry; |
| 3216 | entry += got_size) |
| 3217 | { |
| 3218 | address = bfd_get_64 (abfd, entry); |
| 3219 | |
| 3220 | if (!mips_elf64_overflow_p (value - address, 16)) |
| 3221 | { |
| 3222 | /* This entry will serve as the page pointer. We can add a |
| 3223 | 16-bit number to it to get the actual address. */ |
| 3224 | index = entry - sgot->contents; |
| 3225 | break; |
| 3226 | } |
| 3227 | } |
| 3228 | |
| 3229 | /* If we didn't have an appropriate entry, we create one now. */ |
| 3230 | if (entry == last_entry) |
| 3231 | index = mips_elf64_create_local_got_entry (abfd, g, sgot, value); |
| 3232 | |
| 3233 | if (offsetp) |
| 3234 | { |
| 3235 | address = bfd_get_64 (abfd, entry); |
| 3236 | *offsetp = value - address; |
| 3237 | } |
| 3238 | |
| 3239 | return index; |
| 3240 | } |
| 3241 | |
| 3242 | /* Find a GOT entry whose higher-order 16 bits are the same as those |
| 3243 | for value. Return the index into the GOT for this entry. */ |
| 3244 | |
| 3245 | static bfd_vma |
| 3246 | mips_elf64_got16_entry (abfd, info, value, external) |
| 3247 | bfd *abfd; |
| 3248 | struct bfd_link_info *info; |
| 3249 | bfd_vma value; |
| 3250 | boolean external; |
| 3251 | { |
| 3252 | CONST bfd_vma got_size = get_elf_backend_data (abfd)->s->arch_size / 8; |
| 3253 | asection *sgot; |
| 3254 | struct mips_elf64_got_info *g; |
| 3255 | bfd_byte *entry; |
| 3256 | bfd_byte *last_entry; |
| 3257 | bfd_vma index = 0; |
| 3258 | bfd_vma address; |
| 3259 | |
| 3260 | if (! external) |
| 3261 | { |
| 3262 | /* Although the ABI says that it is "the high-order 16 bits" that we |
| 3263 | want, it is really the %high value. The complete value is |
| 3264 | calculated with a `addiu' of a LO16 relocation, just as with a |
| 3265 | HI16/LO16 pair. */ |
| 3266 | value = mips_elf64_high (value) << 16; |
| 3267 | } |
| 3268 | |
| 3269 | g = _mips_elf64_got_info (elf_hash_table (info)->dynobj, &sgot); |
| 3270 | |
| 3271 | /* Look to see if we already have an appropriate entry. */ |
| 3272 | last_entry = sgot->contents + got_size * g->assigned_gotno; |
| 3273 | for (entry = (sgot->contents + got_size * MIPS_RESERVED_GOTNO); |
| 3274 | entry != last_entry; |
| 3275 | entry += got_size) |
| 3276 | { |
| 3277 | address = bfd_get_64 (abfd, entry); |
| 3278 | if (address == value) |
| 3279 | { |
| 3280 | /* This entry has the right high-order 16 bits, and the low-order |
| 3281 | 16 bits are set to zero. */ |
| 3282 | index = entry - sgot->contents; |
| 3283 | break; |
| 3284 | } |
| 3285 | } |
| 3286 | |
| 3287 | /* If we didn't have an appropriate entry, we create one now. */ |
| 3288 | if (entry == last_entry) |
| 3289 | index = mips_elf64_create_local_got_entry (abfd, g, sgot, value); |
| 3290 | |
| 3291 | return index; |
| 3292 | } |
| 3293 | \f |
| 3294 | /* Return whether a relocation is against a local symbol. */ |
| 3295 | |
| 3296 | static boolean |
| 3297 | mips_elf64_local_relocation_p (input_bfd, relocation, local_sections, |
| 3298 | check_forced) |
| 3299 | bfd *input_bfd; |
| 3300 | const Elf_Internal_Rela *relocation; |
| 3301 | asection **local_sections; |
| 3302 | boolean check_forced; |
| 3303 | { |
| 3304 | unsigned long r_symndx; |
| 3305 | Elf_Internal_Shdr *symtab_hdr; |
| 3306 | struct mips_elf64_link_hash_entry* h; |
| 3307 | size_t extsymoff; |
| 3308 | |
| 3309 | r_symndx = ELF64_R_SYM (relocation->r_info); |
| 3310 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3311 | extsymoff = (elf_bad_symtab (input_bfd)) ? 0 : symtab_hdr->sh_info; |
| 3312 | |
| 3313 | if (r_symndx < extsymoff) |
| 3314 | return true; |
| 3315 | if (elf_bad_symtab (input_bfd) && local_sections[r_symndx] != NULL) |
| 3316 | return true; |
| 3317 | |
| 3318 | if (check_forced) |
| 3319 | { |
| 3320 | /* Look up the hash table to check whether the symbol |
| 3321 | was forced local. */ |
| 3322 | h = (struct mips_elf64_link_hash_entry *) |
| 3323 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]; |
| 3324 | /* Find the real hash-table entry for this symbol. */ |
| 3325 | while (h->root.root.type == bfd_link_hash_indirect |
| 3326 | || h->root.root.type == bfd_link_hash_warning) |
| 3327 | h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; |
| 3328 | if ((h->root.elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0) |
| 3329 | return true; |
| 3330 | } |
| 3331 | |
| 3332 | return false; |
| 3333 | } |
| 3334 | \f |
| 3335 | /* Returns the first relocation of type r_type found, beginning with |
| 3336 | RELOCATION. RELEND is one-past-the-end of the relocation table. */ |
| 3337 | |
| 3338 | static const Elf_Internal_Rela * |
| 3339 | mips_elf64_next_relocation (r_type, relocation, relend) |
| 3340 | unsigned int r_type; |
| 3341 | const Elf_Internal_Rela *relocation; |
| 3342 | const Elf_Internal_Rela *relend; |
| 3343 | { |
| 3344 | /* According to the MIPS ELF ABI, the R_MIPS_LO16 relocation must be |
| 3345 | immediately following. However, for the IRIX6 ABI, the next |
| 3346 | relocation may be a composed relocation consisting of several |
| 3347 | relocations for the same address. In that case, the R_MIPS_LO16 |
| 3348 | relocation may occur as one of these. We permit a similar |
| 3349 | extension in general, as that is useful for GCC. */ |
| 3350 | while (relocation < relend) |
| 3351 | { |
| 3352 | if (ELF64_MIPS_R_TYPE (relocation->r_info) == r_type) |
| 3353 | return relocation; |
| 3354 | |
| 3355 | ++relocation; |
| 3356 | } |
| 3357 | |
| 3358 | /* We didn't find it. */ |
| 3359 | bfd_set_error (bfd_error_bad_value); |
| 3360 | return NULL; |
| 3361 | } |
| 3362 | |
| 3363 | /* Create a rel.dyn relocation for the dynamic linker to resolve. REL |
| 3364 | is the original relocation, which is now being transformed into a |
| 3365 | dynamic relocation. The ADDENDP is adjusted if necessary; the |
| 3366 | caller should store the result in place of the original addend. */ |
| 3367 | |
| 3368 | static boolean |
| 3369 | mips_elf64_create_dynamic_relocation (output_bfd, info, rel, h, sec, |
| 3370 | symbol, addendp, input_section) |
| 3371 | bfd *output_bfd; |
| 3372 | struct bfd_link_info *info; |
| 3373 | const Elf_Internal_Rela *rel; |
| 3374 | struct mips_elf64_link_hash_entry *h; |
| 3375 | asection *sec; |
| 3376 | bfd_vma symbol; |
| 3377 | bfd_vma *addendp; |
| 3378 | asection *input_section; |
| 3379 | { |
| 3380 | Elf_Internal_Rel outrel[3]; |
| 3381 | boolean skip; |
| 3382 | asection *sreloc; |
| 3383 | bfd *dynobj; |
| 3384 | int r_type; |
| 3385 | |
| 3386 | r_type = ELF64_MIPS_R_TYPE (rel->r_info); |
| 3387 | dynobj = elf_hash_table (info)->dynobj; |
| 3388 | sreloc = bfd_get_section_by_name (dynobj, ".rel.dyn"); |
| 3389 | BFD_ASSERT (sreloc != NULL); |
| 3390 | BFD_ASSERT (sreloc->contents != NULL); |
| 3391 | BFD_ASSERT ((sreloc->reloc_count |
| 3392 | * get_elf_backend_data (output_bfd)->s->sizeof_rel) |
| 3393 | < sreloc->_raw_size); |
| 3394 | |
| 3395 | skip = false; |
| 3396 | outrel[0].r_offset = _bfd_elf_section_offset (output_bfd, info, |
| 3397 | input_section, |
| 3398 | rel[0].r_offset); |
| 3399 | |
| 3400 | /* We begin by assuming that the offset for the dynamic relocation |
| 3401 | is the same as for the original relocation. We'll adjust this |
| 3402 | later to reflect the correct output offsets. */ |
| 3403 | if (elf_section_data (input_section)->sec_info_type != ELF_INFO_TYPE_STABS) |
| 3404 | { |
| 3405 | outrel[1].r_offset = rel[1].r_offset; |
| 3406 | outrel[2].r_offset = rel[2].r_offset; |
| 3407 | } |
| 3408 | else |
| 3409 | { |
| 3410 | /* Except that in a stab section things are more complex. |
| 3411 | Because we compress stab information, the offset given in the |
| 3412 | relocation may not be the one we want; we must let the stabs |
| 3413 | machinery tell us the offset. */ |
| 3414 | outrel[1].r_offset = outrel[0].r_offset; |
| 3415 | outrel[2].r_offset = outrel[0].r_offset; |
| 3416 | /* If we didn't need the relocation at all, this value will be |
| 3417 | -1. */ |
| 3418 | if (outrel[0].r_offset == (bfd_vma) -1) |
| 3419 | skip = true; |
| 3420 | } |
| 3421 | |
| 3422 | /* If we've decided to skip this relocation, just output an empty |
| 3423 | record. Note that R_MIPS_NONE == 0, so that this call to memset |
| 3424 | is a way of setting R_TYPE to R_MIPS_NONE. */ |
| 3425 | if (skip) |
| 3426 | memset (outrel, 0, sizeof (Elf_Internal_Rel) * 3); |
| 3427 | else |
| 3428 | { |
| 3429 | long indx; |
| 3430 | bfd_vma section_offset; |
| 3431 | |
| 3432 | /* We must now calculate the dynamic symbol table index to use |
| 3433 | in the relocation. */ |
| 3434 | if (h != NULL |
| 3435 | && (! info->symbolic || (h->root.elf_link_hash_flags |
| 3436 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| 3437 | { |
| 3438 | indx = h->root.dynindx; |
| 3439 | /* h->root.dynindx may be -1 if this symbol was marked to |
| 3440 | become local. */ |
| 3441 | if (indx == -1) |
| 3442 | indx = 0; |
| 3443 | } |
| 3444 | else |
| 3445 | { |
| 3446 | if (sec != NULL && bfd_is_abs_section (sec)) |
| 3447 | indx = 0; |
| 3448 | else if (sec == NULL || sec->owner == NULL) |
| 3449 | { |
| 3450 | bfd_set_error (bfd_error_bad_value); |
| 3451 | return false; |
| 3452 | } |
| 3453 | else |
| 3454 | { |
| 3455 | indx = elf_section_data (sec->output_section)->dynindx; |
| 3456 | if (indx == 0) |
| 3457 | abort (); |
| 3458 | } |
| 3459 | |
| 3460 | /* Figure out how far the target of the relocation is from |
| 3461 | the beginning of its section. */ |
| 3462 | section_offset = symbol - sec->output_section->vma; |
| 3463 | /* The relocation we're building is section-relative. |
| 3464 | Therefore, the original addend must be adjusted by the |
| 3465 | section offset. */ |
| 3466 | *addendp += section_offset; |
| 3467 | /* Now, the relocation is just against the section. */ |
| 3468 | symbol = sec->output_section->vma; |
| 3469 | } |
| 3470 | |
| 3471 | /* If the relocation was previously an absolute relocation and |
| 3472 | this symbol will not be referred to by the relocation, we must |
| 3473 | adjust it by the value we give it in the dynamic symbol table. |
| 3474 | Otherwise leave the job up to the dynamic linker. */ |
| 3475 | if (!indx && r_type != R_MIPS_REL32) |
| 3476 | *addendp += symbol; |
| 3477 | |
| 3478 | /* The relocation is always an REL32 relocation because we don't |
| 3479 | know where the shared library will wind up at load-time. */ |
| 3480 | outrel[0].r_info = ELF64_R_INFO (indx, R_MIPS_REL32); |
| 3481 | |
| 3482 | /* Adjust the output offset of the relocation to reference the |
| 3483 | correct location in the output file. */ |
| 3484 | outrel[0].r_offset += (input_section->output_section->vma |
| 3485 | + input_section->output_offset); |
| 3486 | outrel[1].r_offset += (input_section->output_section->vma |
| 3487 | + input_section->output_offset); |
| 3488 | outrel[2].r_offset += (input_section->output_section->vma |
| 3489 | + input_section->output_offset); |
| 3490 | } |
| 3491 | |
| 3492 | /* Put the relocation back out. */ |
| 3493 | mips_elf64_be_swap_reloc_out (output_bfd, outrel, |
| 3494 | (sreloc->contents |
| 3495 | + sreloc->reloc_count |
| 3496 | * sizeof (Elf64_Mips_External_Rel))); |
| 3497 | |
| 3498 | /* Record the index of the first relocation referencing H. This |
| 3499 | information is later emitted in the .msym section. */ |
| 3500 | if (h != NULL |
| 3501 | && (h->min_dyn_reloc_index == 0 |
| 3502 | || sreloc->reloc_count < h->min_dyn_reloc_index)) |
| 3503 | h->min_dyn_reloc_index = sreloc->reloc_count; |
| 3504 | |
| 3505 | /* We've now added another relocation. */ |
| 3506 | ++sreloc->reloc_count; |
| 3507 | |
| 3508 | /* Make sure the output section is writable. The dynamic linker |
| 3509 | will be writing to it. */ |
| 3510 | elf_section_data (input_section->output_section)->this_hdr.sh_flags |
| 3511 | |= SHF_WRITE; |
| 3512 | |
| 3513 | return true; |
| 3514 | } |
| 3515 | |
| 3516 | /* Calculate the value produced by the RELOCATION (which comes from |
| 3517 | the INPUT_BFD). The ADDEND is the addend to use for this |
| 3518 | RELOCATION; RELOCATION->R_ADDEND is ignored. |
| 3519 | |
| 3520 | The result of the relocation calculation is stored in VALUEP. |
| 3521 | REQUIRE_JALXP indicates whether or not the opcode used with this |
| 3522 | relocation must be JALX. |
| 3523 | |
| 3524 | This function returns bfd_reloc_continue if the caller need take no |
| 3525 | further action regarding this relocation, bfd_reloc_notsupported if |
| 3526 | something goes dramatically wrong, bfd_reloc_overflow if an |
| 3527 | overflow occurs, and bfd_reloc_ok to indicate success. */ |
| 3528 | |
| 3529 | static bfd_reloc_status_type |
| 3530 | mips_elf64_calculate_relocation (abfd, input_bfd, input_section, info, |
| 3531 | relocation, addend, howto, local_syms, |
| 3532 | local_sections, valuep, namep, require_jalxp) |
| 3533 | bfd *abfd; |
| 3534 | bfd *input_bfd; |
| 3535 | asection *input_section; |
| 3536 | struct bfd_link_info *info; |
| 3537 | const Elf_Internal_Rela *relocation; |
| 3538 | bfd_vma addend; |
| 3539 | reloc_howto_type *howto; |
| 3540 | Elf_Internal_Sym *local_syms; |
| 3541 | asection **local_sections; |
| 3542 | bfd_vma *valuep; |
| 3543 | const char **namep; |
| 3544 | boolean *require_jalxp; |
| 3545 | { |
| 3546 | /* The eventual value we will return. */ |
| 3547 | bfd_vma value; |
| 3548 | /* The address of the symbol against which the relocation is |
| 3549 | occurring. */ |
| 3550 | bfd_vma symbol = 0; |
| 3551 | /* The final GP value to be used for the relocatable, executable, or |
| 3552 | shared object file being produced. */ |
| 3553 | bfd_vma gp = (bfd_vma) - 1; |
| 3554 | /* The place (section offset or address) of the storage unit being |
| 3555 | relocated. */ |
| 3556 | bfd_vma p; |
| 3557 | /* The value of GP used to create the relocatable object. */ |
| 3558 | bfd_vma gp0 = (bfd_vma) - 1; |
| 3559 | /* The offset into the global offset table at which the address of |
| 3560 | the relocation entry symbol, adjusted by the addend, resides |
| 3561 | during execution. */ |
| 3562 | bfd_vma g = (bfd_vma) - 1; |
| 3563 | /* The section in which the symbol referenced by the relocation is |
| 3564 | located. */ |
| 3565 | asection *sec = NULL; |
| 3566 | struct mips_elf64_link_hash_entry* h = NULL; |
| 3567 | /* True if the symbol referred to by this relocation is a local |
| 3568 | symbol. */ |
| 3569 | boolean local_p; |
| 3570 | Elf_Internal_Shdr *symtab_hdr; |
| 3571 | size_t extsymoff; |
| 3572 | unsigned long r_symndx; |
| 3573 | int r_type; |
| 3574 | /* True if overflow occurred during the calculation of the |
| 3575 | relocation value. */ |
| 3576 | boolean overflowed_p; |
| 3577 | /* True if this relocation refers to a MIPS16 function. */ |
| 3578 | boolean target_is_16_bit_code_p = false; |
| 3579 | |
| 3580 | /* Parse the relocation. */ |
| 3581 | r_symndx = ELF64_R_SYM (relocation->r_info); |
| 3582 | r_type = ELF64_MIPS_R_TYPE (relocation->r_info); |
| 3583 | p = (input_section->output_section->vma |
| 3584 | + input_section->output_offset |
| 3585 | + relocation->r_offset); |
| 3586 | |
| 3587 | /* Assume that there will be no overflow. */ |
| 3588 | overflowed_p = false; |
| 3589 | |
| 3590 | /* Figure out whether or not the symbol is local, and get the offset |
| 3591 | used in the array of hash table entries. */ |
| 3592 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3593 | local_p = mips_elf64_local_relocation_p (input_bfd, relocation, |
| 3594 | local_sections, false); |
| 3595 | if (! elf_bad_symtab (input_bfd)) |
| 3596 | extsymoff = symtab_hdr->sh_info; |
| 3597 | else |
| 3598 | { |
| 3599 | /* The symbol table does not follow the rule that local symbols |
| 3600 | must come before globals. */ |
| 3601 | extsymoff = 0; |
| 3602 | } |
| 3603 | |
| 3604 | /* Figure out the value of the symbol. */ |
| 3605 | if (local_p) |
| 3606 | { |
| 3607 | Elf_Internal_Sym *sym; |
| 3608 | |
| 3609 | sym = local_syms + r_symndx; |
| 3610 | sec = local_sections[r_symndx]; |
| 3611 | |
| 3612 | symbol = sec->output_section->vma + sec->output_offset; |
| 3613 | if (ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 3614 | symbol += sym->st_value; |
| 3615 | |
| 3616 | /* MIPS16 text labels should be treated as odd. */ |
| 3617 | if (sym->st_other == STO_MIPS16) |
| 3618 | ++symbol; |
| 3619 | |
| 3620 | /* Record the name of this symbol, for our caller. */ |
| 3621 | *namep = bfd_elf_string_from_elf_section (input_bfd, |
| 3622 | symtab_hdr->sh_link, |
| 3623 | sym->st_name); |
| 3624 | if (*namep == '\0') |
| 3625 | *namep = bfd_section_name (input_bfd, sec); |
| 3626 | |
| 3627 | target_is_16_bit_code_p = (sym->st_other == STO_MIPS16); |
| 3628 | } |
| 3629 | else |
| 3630 | { |
| 3631 | /* For global symbols we look up the symbol in the hash-table. */ |
| 3632 | h = ((struct mips_elf64_link_hash_entry *) |
| 3633 | elf_sym_hashes (input_bfd) [r_symndx - extsymoff]); |
| 3634 | /* Find the real hash-table entry for this symbol. */ |
| 3635 | while (h->root.root.type == bfd_link_hash_indirect |
| 3636 | || h->root.root.type == bfd_link_hash_warning) |
| 3637 | h = (struct mips_elf64_link_hash_entry *) h->root.root.u.i.link; |
| 3638 | |
| 3639 | /* Record the name of this symbol, for our caller. */ |
| 3640 | *namep = h->root.root.root.string; |
| 3641 | |
| 3642 | /* If this symbol is defined, calculate its address. */ |
| 3643 | if ((h->root.root.type == bfd_link_hash_defined |
| 3644 | || h->root.root.type == bfd_link_hash_defweak) |
| 3645 | && h->root.root.u.def.section) |
| 3646 | { |
| 3647 | sec = h->root.root.u.def.section; |
| 3648 | if (sec->output_section) |
| 3649 | symbol = (h->root.root.u.def.value |
| 3650 | + sec->output_section->vma |
| 3651 | + sec->output_offset); |
| 3652 | else |
| 3653 | symbol = h->root.root.u.def.value; |
| 3654 | } |
| 3655 | else if (h->root.root.type == bfd_link_hash_undefweak) |
| 3656 | /* We allow relocations against undefined weak symbols, giving |
| 3657 | it the value zero, so that you can undefined weak functions |
| 3658 | and check to see if they exist by looking at their |
| 3659 | addresses. */ |
| 3660 | symbol = 0; |
| 3661 | else if (info->shared |
| 3662 | && (!info->symbolic || info->allow_shlib_undefined) |
| 3663 | && !info->no_undefined |
| 3664 | && ELF_ST_VISIBILITY (h->root.other) == STV_DEFAULT) |
| 3665 | symbol = 0; |
| 3666 | else if (strcmp (h->root.root.root.string, "_DYNAMIC_LINK") == 0 || |
| 3667 | strcmp (h->root.root.root.string, "_DYNAMIC_LINKING") == 0) |
| 3668 | { |
| 3669 | /* If this is a dynamic link, we should have created a |
| 3670 | _DYNAMIC_LINK symbol or _DYNAMIC_LINKING(for normal mips) symbol |
| 3671 | in in mips_elf64_create_dynamic_sections. |
| 3672 | Otherwise, we should define the symbol with a value of 0. |
| 3673 | FIXME: It should probably get into the symbol table |
| 3674 | somehow as well. */ |
| 3675 | BFD_ASSERT (! info->shared); |
| 3676 | BFD_ASSERT (bfd_get_section_by_name (abfd, ".dynamic") == NULL); |
| 3677 | symbol = 0; |
| 3678 | } |
| 3679 | else |
| 3680 | { |
| 3681 | if (! ((*info->callbacks->undefined_symbol) |
| 3682 | (info, h->root.root.root.string, input_bfd, |
| 3683 | input_section, relocation->r_offset, |
| 3684 | (!info->shared || info->no_undefined |
| 3685 | || ELF_ST_VISIBILITY (h->root.other))))) |
| 3686 | return bfd_reloc_undefined; |
| 3687 | symbol = 0; |
| 3688 | } |
| 3689 | |
| 3690 | target_is_16_bit_code_p = (h->root.other == STO_MIPS16); |
| 3691 | } |
| 3692 | |
| 3693 | /* If this is a 64-bit call to a 16-bit function with a stub, we |
| 3694 | need to redirect the call to the stub, unless we're already *in* |
| 3695 | a stub. */ |
| 3696 | if (r_type != R_MIPS16_26 && !info->relocateable |
| 3697 | && ((h != NULL && h->fn_stub != NULL) |
| 3698 | || (local_p && elf_tdata (input_bfd)->local_stubs != NULL |
| 3699 | && elf_tdata (input_bfd)->local_stubs[r_symndx] != NULL)) |
| 3700 | && !mips_elf64_stub_section_p (input_bfd, input_section)) |
| 3701 | { |
| 3702 | /* This is a 64-bit call to a 16-bit function. We should |
| 3703 | have already noticed that we were going to need the |
| 3704 | stub. */ |
| 3705 | if (local_p) |
| 3706 | sec = elf_tdata (input_bfd)->local_stubs[r_symndx]; |
| 3707 | else |
| 3708 | { |
| 3709 | BFD_ASSERT (h->need_fn_stub); |
| 3710 | sec = h->fn_stub; |
| 3711 | } |
| 3712 | |
| 3713 | symbol = sec->output_section->vma + sec->output_offset; |
| 3714 | } |
| 3715 | /* If this is a 16-bit call to a 64-bit function with a stub, we |
| 3716 | need to redirect the call to the stub. */ |
| 3717 | else if (r_type == R_MIPS16_26 && !info->relocateable |
| 3718 | && h != NULL |
| 3719 | && (h->call_stub != NULL || h->call_fp_stub != NULL) |
| 3720 | && !target_is_16_bit_code_p) |
| 3721 | { |
| 3722 | /* If both call_stub and call_fp_stub are defined, we can figure |
| 3723 | out which one to use by seeing which one appears in the input |
| 3724 | file. */ |
| 3725 | if (h->call_stub != NULL && h->call_fp_stub != NULL) |
| 3726 | { |
| 3727 | asection *o; |
| 3728 | |
| 3729 | sec = NULL; |
| 3730 | for (o = input_bfd->sections; o != NULL; o = o->next) |
| 3731 | { |
| 3732 | if (strncmp (bfd_get_section_name (input_bfd, o), |
| 3733 | CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) |
| 3734 | { |
| 3735 | sec = h->call_fp_stub; |
| 3736 | break; |
| 3737 | } |
| 3738 | } |
| 3739 | if (sec == NULL) |
| 3740 | sec = h->call_stub; |
| 3741 | } |
| 3742 | else if (h->call_stub != NULL) |
| 3743 | sec = h->call_stub; |
| 3744 | else |
| 3745 | sec = h->call_fp_stub; |
| 3746 | |
| 3747 | BFD_ASSERT (sec->_raw_size > 0); |
| 3748 | symbol = sec->output_section->vma + sec->output_offset; |
| 3749 | } |
| 3750 | |
| 3751 | /* Calls from 16-bit code to 32-bit code and vice versa require the |
| 3752 | special jalx instruction. */ |
| 3753 | *require_jalxp = (!info->relocateable |
| 3754 | && ((r_type == R_MIPS16_26) != target_is_16_bit_code_p)); |
| 3755 | |
| 3756 | local_p = mips_elf64_local_relocation_p (input_bfd, relocation, |
| 3757 | local_sections, true); |
| 3758 | |
| 3759 | /* If we haven't already determined the GOT offset, or the GP value, |
| 3760 | and we're going to need it, get it now. */ |
| 3761 | switch (r_type) |
| 3762 | { |
| 3763 | case R_MIPS_CALL16: |
| 3764 | case R_MIPS_GOT16: |
| 3765 | case R_MIPS_GOT_DISP: |
| 3766 | case R_MIPS_GOT_HI16: |
| 3767 | case R_MIPS_CALL_HI16: |
| 3768 | case R_MIPS_GOT_LO16: |
| 3769 | case R_MIPS_CALL_LO16: |
| 3770 | /* Find the index into the GOT where this value is located. */ |
| 3771 | if (!local_p) |
| 3772 | { |
| 3773 | BFD_ASSERT (addend == 0); |
| 3774 | g = mips_elf64_global_got_index (elf_hash_table (info)->dynobj, |
| 3775 | (struct elf_link_hash_entry*) h); |
| 3776 | if (! elf_hash_table(info)->dynamic_sections_created |
| 3777 | || (info->shared |
| 3778 | && (info->symbolic || h->root.dynindx == -1) |
| 3779 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR))) |
| 3780 | { |
| 3781 | /* This is a static link or a -Bsymbolic link. The |
| 3782 | symbol is defined locally, or was forced to be local. |
| 3783 | We must initialize this entry in the GOT. */ |
| 3784 | bfd *tmpbfd = elf_hash_table (info)->dynobj; |
| 3785 | |
| 3786 | asection *sgot = bfd_get_section_by_name (tmpbfd, ".got"); |
| 3787 | bfd_put_64 (tmpbfd, symbol + addend, sgot->contents + g); |
| 3788 | } |
| 3789 | } |
| 3790 | else if (r_type == R_MIPS_GOT16 || r_type == R_MIPS_CALL16) |
| 3791 | /* There's no need to create a local GOT entry here; the |
| 3792 | calculation for a local GOT16 entry does not involve G. */ |
| 3793 | break; |
| 3794 | else |
| 3795 | { |
| 3796 | g = mips_elf64_local_got_index (abfd, info, symbol + addend); |
| 3797 | if (g == (bfd_vma) -1) |
| 3798 | return false; |
| 3799 | } |
| 3800 | |
| 3801 | /* Convert GOT indices to actual offsets. */ |
| 3802 | g = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, |
| 3803 | abfd, g); |
| 3804 | break; |
| 3805 | |
| 3806 | case R_MIPS_HI16: |
| 3807 | case R_MIPS_LO16: |
| 3808 | case R_MIPS_GPREL16: |
| 3809 | case R_MIPS_GPREL32: |
| 3810 | case R_MIPS_LITERAL: |
| 3811 | gp0 = _bfd_get_gp_value (input_bfd); |
| 3812 | gp = _bfd_get_gp_value (abfd); |
| 3813 | break; |
| 3814 | |
| 3815 | default: |
| 3816 | break; |
| 3817 | } |
| 3818 | |
| 3819 | /* Figure out what kind of relocation is being performed. */ |
| 3820 | switch (r_type) |
| 3821 | { |
| 3822 | case R_MIPS_NONE: |
| 3823 | return bfd_reloc_continue; |
| 3824 | |
| 3825 | case R_MIPS_16: |
| 3826 | value = symbol + mips_elf64_sign_extend (addend, 16); |
| 3827 | overflowed_p = mips_elf64_overflow_p (value, 16); |
| 3828 | break; |
| 3829 | |
| 3830 | case R_MIPS_32: |
| 3831 | case R_MIPS_REL32: |
| 3832 | case R_MIPS_64: |
| 3833 | if ((info->shared |
| 3834 | || (elf_hash_table (info)->dynamic_sections_created |
| 3835 | && h != NULL |
| 3836 | && ((h->root.elf_link_hash_flags |
| 3837 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0) |
| 3838 | && ((h->root.elf_link_hash_flags |
| 3839 | & ELF_LINK_HASH_DEF_REGULAR) == 0))) |
| 3840 | && r_symndx != 0 |
| 3841 | && (input_section->flags & SEC_ALLOC) != 0) |
| 3842 | { |
| 3843 | /* If we're creating a shared library, or this relocation is |
| 3844 | against a symbol in a shared library, then we can't know |
| 3845 | where the symbol will end up. So, we create a relocation |
| 3846 | record in the output, and leave the job up to the dynamic |
| 3847 | linker. */ |
| 3848 | value = addend; |
| 3849 | if (!mips_elf64_create_dynamic_relocation (abfd, info, relocation, |
| 3850 | h, sec, symbol, &value, |
| 3851 | input_section)) |
| 3852 | return false; |
| 3853 | } |
| 3854 | else |
| 3855 | { |
| 3856 | if (r_type != R_MIPS_REL32) |
| 3857 | value = symbol + addend; |
| 3858 | else |
| 3859 | value = addend; |
| 3860 | } |
| 3861 | value &= howto->dst_mask; |
| 3862 | break; |
| 3863 | |
| 3864 | case R_MIPS_PC32: |
| 3865 | case R_MIPS_PC64: |
| 3866 | case R_MIPS_GNU_REL_LO16: |
| 3867 | value = symbol + addend - p; |
| 3868 | value &= howto->dst_mask; |
| 3869 | break; |
| 3870 | |
| 3871 | case R_MIPS_GNU_REL16_S2: |
| 3872 | value = symbol + mips_elf64_sign_extend (addend << 2, 18) - p; |
| 3873 | overflowed_p = mips_elf64_overflow_p (value, 18); |
| 3874 | value = (value >> 2) & howto->dst_mask; |
| 3875 | break; |
| 3876 | |
| 3877 | case R_MIPS_GNU_REL_HI16: |
| 3878 | value = mips_elf64_high (addend + symbol - p); |
| 3879 | value &= howto->dst_mask; |
| 3880 | break; |
| 3881 | |
| 3882 | case R_MIPS16_26: |
| 3883 | /* The calculation for R_MIPS16_26 is just the same as for an |
| 3884 | R_MIPS_26. It's only the storage of the relocated field into |
| 3885 | the output file that's different. That's handled in |
| 3886 | mips_elf_perform_relocation. So, we just fall through to the |
| 3887 | R_MIPS_26 case here. */ |
| 3888 | case R_MIPS_26: |
| 3889 | if (local_p) |
| 3890 | value = (((addend << 2) | ((p + 4) & 0xf0000000)) + symbol) >> 2; |
| 3891 | else |
| 3892 | value = (mips_elf64_sign_extend (addend << 2, 28) + symbol) >> 2; |
| 3893 | value &= howto->dst_mask; |
| 3894 | break; |
| 3895 | |
| 3896 | case R_MIPS_HI16: |
| 3897 | value = mips_elf64_high (addend + symbol); |
| 3898 | value &= howto->dst_mask; |
| 3899 | break; |
| 3900 | |
| 3901 | case R_MIPS_LO16: |
| 3902 | value = (addend + symbol) & 0xffff; |
| 3903 | value &= howto->dst_mask; |
| 3904 | break; |
| 3905 | |
| 3906 | case R_MIPS_LITERAL: |
| 3907 | /* Because we don't merge literal sections, we can handle this |
| 3908 | just like R_MIPS_GPREL16. In the long run, we should merge |
| 3909 | shared literals, and then we will need to additional work |
| 3910 | here. */ |
| 3911 | |
| 3912 | /* Fall through. */ |
| 3913 | |
| 3914 | case R_MIPS_GPREL16: |
| 3915 | if (local_p) |
| 3916 | value = mips_elf64_sign_extend (addend, 16) + symbol + gp0 - gp; |
| 3917 | else |
| 3918 | value = mips_elf64_sign_extend (addend, 16) + symbol - gp; |
| 3919 | overflowed_p = mips_elf64_overflow_p (value, 16); |
| 3920 | break; |
| 3921 | |
| 3922 | case R_MIPS_PC16: |
| 3923 | value = mips_elf64_sign_extend (addend, 16) + symbol - p; |
| 3924 | overflowed_p = mips_elf64_overflow_p (value, 16); |
| 3925 | value = (bfd_vma) ((bfd_signed_vma) value / 4); |
| 3926 | break; |
| 3927 | |
| 3928 | case R_MIPS_GOT16: |
| 3929 | case R_MIPS_CALL16: |
| 3930 | if (local_p) |
| 3931 | { |
| 3932 | boolean forced; |
| 3933 | |
| 3934 | /* The special case is when the symbol is forced to be local. We |
| 3935 | need the full address in the GOT since no R_MIPS_LO16 relocation |
| 3936 | follows. */ |
| 3937 | forced = ! mips_elf64_local_relocation_p (input_bfd, relocation, |
| 3938 | local_sections, false); |
| 3939 | value = mips_elf64_got16_entry (abfd, info, symbol + addend, forced); |
| 3940 | if (value == (bfd_vma) -1) |
| 3941 | return false; |
| 3942 | value |
| 3943 | = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, |
| 3944 | abfd, |
| 3945 | value); |
| 3946 | overflowed_p = mips_elf64_overflow_p (value, 16); |
| 3947 | break; |
| 3948 | } |
| 3949 | |
| 3950 | /* Fall through. */ |
| 3951 | |
| 3952 | case R_MIPS_GOT_DISP: |
| 3953 | value = g; |
| 3954 | overflowed_p = mips_elf64_overflow_p (value, 16); |
| 3955 | break; |
| 3956 | |
| 3957 | case R_MIPS_GPREL32: |
| 3958 | value = (addend + symbol + gp0 - gp) & howto->dst_mask; |
| 3959 | break; |
| 3960 | |
| 3961 | case R_MIPS_GOT_HI16: |
| 3962 | case R_MIPS_CALL_HI16: |
| 3963 | /* We're allowed to handle these two relocations identically. |
| 3964 | The dynamic linker is allowed to handle the CALL relocations |
| 3965 | differently by creating a lazy evaluation stub. */ |
| 3966 | value = g; |
| 3967 | value = mips_elf64_high (value); |
| 3968 | value &= howto->dst_mask; |
| 3969 | break; |
| 3970 | |
| 3971 | case R_MIPS_GOT_LO16: |
| 3972 | case R_MIPS_CALL_LO16: |
| 3973 | value = g & howto->dst_mask; |
| 3974 | break; |
| 3975 | |
| 3976 | case R_MIPS_GOT_PAGE: |
| 3977 | value = mips_elf64_got_page (abfd, info, symbol + addend, NULL); |
| 3978 | if (value == (bfd_vma) -1) |
| 3979 | return false; |
| 3980 | value = mips_elf64_got_offset_from_index (elf_hash_table (info)->dynobj, |
| 3981 | abfd, |
| 3982 | value); |
| 3983 | overflowed_p = mips_elf64_overflow_p (value, 16); |
| 3984 | break; |
| 3985 | |
| 3986 | case R_MIPS_GOT_OFST: |
| 3987 | mips_elf64_got_page (abfd, info, symbol + addend, &value); |
| 3988 | overflowed_p = mips_elf64_overflow_p (value, 16); |
| 3989 | break; |
| 3990 | |
| 3991 | case R_MIPS_SUB: |
| 3992 | value = symbol - addend; |
| 3993 | value &= howto->dst_mask; |
| 3994 | break; |
| 3995 | |
| 3996 | case R_MIPS_HIGHER: |
| 3997 | value = mips_elf64_higher (addend + symbol); |
| 3998 | value &= howto->dst_mask; |
| 3999 | break; |
| 4000 | |
| 4001 | case R_MIPS_HIGHEST: |
| 4002 | value = mips_elf64_highest (addend + symbol); |
| 4003 | value &= howto->dst_mask; |
| 4004 | break; |
| 4005 | |
| 4006 | case R_MIPS_SCN_DISP: |
| 4007 | value = symbol + addend - sec->output_offset; |
| 4008 | value &= howto->dst_mask; |
| 4009 | break; |
| 4010 | |
| 4011 | case R_MIPS_PJUMP: |
| 4012 | case R_MIPS_JALR: |
| 4013 | /* Both of these may be ignored. R_MIPS_JALR is an optimization |
| 4014 | hint; we could improve performance by honoring that hint. */ |
| 4015 | return bfd_reloc_continue; |
| 4016 | |
| 4017 | case R_MIPS_GNU_VTINHERIT: |
| 4018 | case R_MIPS_GNU_VTENTRY: |
| 4019 | /* We don't do anything with these at present. */ |
| 4020 | return bfd_reloc_continue; |
| 4021 | |
| 4022 | default: |
| 4023 | /* An unrecognized relocation type. */ |
| 4024 | return bfd_reloc_notsupported; |
| 4025 | } |
| 4026 | |
| 4027 | /* Store the VALUE for our caller. */ |
| 4028 | *valuep = value; |
| 4029 | return overflowed_p ? bfd_reloc_overflow : bfd_reloc_ok; |
| 4030 | } |
| 4031 | \f |
| 4032 | /* Obtain the field relocated by RELOCATION. */ |
| 4033 | |
| 4034 | static bfd_vma |
| 4035 | mips_elf64_obtain_contents (howto, relocation, input_bfd, contents) |
| 4036 | reloc_howto_type *howto; |
| 4037 | const Elf_Internal_Rela *relocation; |
| 4038 | bfd *input_bfd; |
| 4039 | bfd_byte *contents; |
| 4040 | { |
| 4041 | bfd_byte *location = contents + relocation->r_offset; |
| 4042 | |
| 4043 | /* Obtain the bytes. */ |
| 4044 | return bfd_get (8 * bfd_get_reloc_size (howto), input_bfd, location); |
| 4045 | } |
| 4046 | |
| 4047 | /* It has been determined that the result of the RELOCATION is the |
| 4048 | VALUE. Use HOWTO to place VALUE into the output file at the |
| 4049 | appropriate position. The SECTION is the section to which the |
| 4050 | relocation applies. If REQUIRE_JALX is true, then the opcode used |
| 4051 | for the relocation must be either JAL or JALX, and it is |
| 4052 | unconditionally converted to JALX. |
| 4053 | |
| 4054 | Returns false if anything goes wrong. */ |
| 4055 | |
| 4056 | static boolean |
| 4057 | mips_elf64_perform_relocation (info, howto, relocation, value, |
| 4058 | input_bfd, input_section, |
| 4059 | contents, require_jalx) |
| 4060 | struct bfd_link_info *info; |
| 4061 | reloc_howto_type *howto; |
| 4062 | const Elf_Internal_Rela *relocation; |
| 4063 | bfd_vma value; |
| 4064 | bfd *input_bfd; |
| 4065 | asection *input_section; |
| 4066 | bfd_byte *contents; |
| 4067 | boolean require_jalx; |
| 4068 | { |
| 4069 | bfd_vma x; |
| 4070 | bfd_byte *location; |
| 4071 | int r_type = ELF32_R_TYPE (relocation->r_info); |
| 4072 | |
| 4073 | /* Figure out where the relocation is occurring. */ |
| 4074 | location = contents + relocation->r_offset; |
| 4075 | |
| 4076 | /* Obtain the current value. */ |
| 4077 | x = mips_elf64_obtain_contents (howto, relocation, input_bfd, contents); |
| 4078 | |
| 4079 | /* Clear the field we are setting. */ |
| 4080 | x &= ~howto->dst_mask; |
| 4081 | |
| 4082 | /* If this is the R_MIPS16_26 relocation, we must store the |
| 4083 | value in a funny way. */ |
| 4084 | if (r_type == R_MIPS16_26) |
| 4085 | { |
| 4086 | /* R_MIPS16_26 is used for the mips16 jal and jalx instructions. |
| 4087 | Most mips16 instructions are 16 bits, but these instructions |
| 4088 | are 32 bits. |
| 4089 | |
| 4090 | The format of these instructions is: |
| 4091 | |
| 4092 | +--------------+--------------------------------+ |
| 4093 | ! JALX ! X! Imm 20:16 ! Imm 25:21 ! |
| 4094 | +--------------+--------------------------------+ |
| 4095 | ! Immediate 15:0 ! |
| 4096 | +-----------------------------------------------+ |
| 4097 | |
| 4098 | JALX is the 5-bit value 00011. X is 0 for jal, 1 for jalx. |
| 4099 | Note that the immediate value in the first word is swapped. |
| 4100 | |
| 4101 | When producing a relocateable object file, R_MIPS16_26 is |
| 4102 | handled mostly like R_MIPS_26. In particular, the addend is |
| 4103 | stored as a straight 26-bit value in a 32-bit instruction. |
| 4104 | (gas makes life simpler for itself by never adjusting a |
| 4105 | R_MIPS16_26 reloc to be against a section, so the addend is |
| 4106 | always zero). However, the 32 bit instruction is stored as 2 |
| 4107 | 16-bit values, rather than a single 32-bit value. In a |
| 4108 | big-endian file, the result is the same; in a little-endian |
| 4109 | file, the two 16-bit halves of the 32 bit value are swapped. |
| 4110 | This is so that a disassembler can recognize the jal |
| 4111 | instruction. |
| 4112 | |
| 4113 | When doing a final link, R_MIPS16_26 is treated as a 32 bit |
| 4114 | instruction stored as two 16-bit values. The addend A is the |
| 4115 | contents of the targ26 field. The calculation is the same as |
| 4116 | R_MIPS_26. When storing the calculated value, reorder the |
| 4117 | immediate value as shown above, and don't forget to store the |
| 4118 | value as two 16-bit values. |
| 4119 | |
| 4120 | To put it in MIPS ABI terms, the relocation field is T-targ26-16, |
| 4121 | defined as |
| 4122 | |
| 4123 | big-endian: |
| 4124 | +--------+----------------------+ |
| 4125 | | | | |
| 4126 | | | targ26-16 | |
| 4127 | |31 26|25 0| |
| 4128 | +--------+----------------------+ |
| 4129 | |
| 4130 | little-endian: |
| 4131 | +----------+------+-------------+ |
| 4132 | | | | | |
| 4133 | | sub1 | | sub2 | |
| 4134 | |0 9|10 15|16 31| |
| 4135 | +----------+--------------------+ |
| 4136 | where targ26-16 is sub1 followed by sub2 (i.e., the addend field A is |
| 4137 | ((sub1 << 16) | sub2)). |
| 4138 | |
| 4139 | When producing a relocateable object file, the calculation is |
| 4140 | (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) |
| 4141 | When producing a fully linked file, the calculation is |
| 4142 | let R = (((A < 2) | ((P + 4) & 0xf0000000) + S) >> 2) |
| 4143 | ((R & 0x1f0000) << 5) | ((R & 0x3e00000) >> 5) | (R & 0xffff) */ |
| 4144 | |
| 4145 | if (!info->relocateable) |
| 4146 | /* Shuffle the bits according to the formula above. */ |
| 4147 | value = (((value & 0x1f0000) << 5) |
| 4148 | | ((value & 0x3e00000) >> 5) |
| 4149 | | (value & 0xffff)); |
| 4150 | } |
| 4151 | else if (r_type == R_MIPS16_GPREL) |
| 4152 | { |
| 4153 | /* R_MIPS16_GPREL is used for GP-relative addressing in mips16 |
| 4154 | mode. A typical instruction will have a format like this: |
| 4155 | |
| 4156 | +--------------+--------------------------------+ |
| 4157 | ! EXTEND ! Imm 10:5 ! Imm 15:11 ! |
| 4158 | +--------------+--------------------------------+ |
| 4159 | ! Major ! rx ! ry ! Imm 4:0 ! |
| 4160 | +--------------+--------------------------------+ |
| 4161 | |
| 4162 | EXTEND is the five bit value 11110. Major is the instruction |
| 4163 | opcode. |
| 4164 | |
| 4165 | This is handled exactly like R_MIPS_GPREL16, except that the |
| 4166 | addend is retrieved and stored as shown in this diagram; that |
| 4167 | is, the Imm fields above replace the V-rel16 field. |
| 4168 | |
| 4169 | All we need to do here is shuffle the bits appropriately. As |
| 4170 | above, the two 16-bit halves must be swapped on a |
| 4171 | little-endian system. */ |
| 4172 | value = (((value & 0x7e0) << 16) |
| 4173 | | ((value & 0xf800) << 5) |
| 4174 | | (value & 0x1f)); |
| 4175 | } |
| 4176 | |
| 4177 | /* Set the field. */ |
| 4178 | x |= (value & howto->dst_mask); |
| 4179 | |
| 4180 | /* If required, turn JAL into JALX. */ |
| 4181 | if (require_jalx) |
| 4182 | { |
| 4183 | boolean ok; |
| 4184 | bfd_vma opcode = x >> 26; |
| 4185 | bfd_vma jalx_opcode; |
| 4186 | |
| 4187 | /* Check to see if the opcode is already JAL or JALX. */ |
| 4188 | if (r_type == R_MIPS16_26) |
| 4189 | { |
| 4190 | ok = ((opcode == 0x6) || (opcode == 0x7)); |
| 4191 | jalx_opcode = 0x7; |
| 4192 | } |
| 4193 | else |
| 4194 | { |
| 4195 | ok = ((opcode == 0x3) || (opcode == 0x1d)); |
| 4196 | jalx_opcode = 0x1d; |
| 4197 | } |
| 4198 | |
| 4199 | /* If the opcode is not JAL or JALX, there's a problem. */ |
| 4200 | if (!ok) |
| 4201 | { |
| 4202 | (*_bfd_error_handler) |
| 4203 | (_("%s: %s+0x%lx: jump to stub routine which is not jal"), |
| 4204 | bfd_archive_filename (input_bfd), |
| 4205 | input_section->name, |
| 4206 | (unsigned long) relocation->r_offset); |
| 4207 | bfd_set_error (bfd_error_bad_value); |
| 4208 | return false; |
| 4209 | } |
| 4210 | |
| 4211 | /* Make this the JALX opcode. */ |
| 4212 | x = (x & ~(0x3f << 26)) | (jalx_opcode << 26); |
| 4213 | } |
| 4214 | |
| 4215 | /* Swap the high- and low-order 16 bits on little-endian systems |
| 4216 | when doing a MIPS16 relocation. */ |
| 4217 | if ((r_type == R_MIPS16_GPREL || r_type == R_MIPS16_26) |
| 4218 | && bfd_little_endian (input_bfd)) |
| 4219 | x = (((x & 0xffff) << 16) | ((x & 0xffff0000) >> 16)); |
| 4220 | |
| 4221 | /* Put the value into the output. */ |
| 4222 | bfd_put (8 * bfd_get_reloc_size (howto), input_bfd, x, location); |
| 4223 | return true; |
| 4224 | } |
| 4225 | |
| 4226 | /* Returns true if SECTION is a MIPS16 stub section. */ |
| 4227 | |
| 4228 | static boolean |
| 4229 | mips_elf64_stub_section_p (abfd, section) |
| 4230 | bfd *abfd ATTRIBUTE_UNUSED; |
| 4231 | asection *section; |
| 4232 | { |
| 4233 | const char *name = bfd_get_section_name (abfd, section); |
| 4234 | |
| 4235 | return (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0 |
| 4236 | || strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 |
| 4237 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0); |
| 4238 | } |
| 4239 | |
| 4240 | /* Relocate a MIPS ELF64 section. */ |
| 4241 | |
| 4242 | static boolean |
| 4243 | mips_elf64_relocate_section (output_bfd, info, input_bfd, input_section, |
| 4244 | contents, relocs, local_syms, local_sections) |
| 4245 | bfd *output_bfd; |
| 4246 | struct bfd_link_info *info; |
| 4247 | bfd *input_bfd; |
| 4248 | asection *input_section; |
| 4249 | bfd_byte *contents; |
| 4250 | Elf_Internal_Rela *relocs; |
| 4251 | Elf_Internal_Sym *local_syms; |
| 4252 | asection **local_sections; |
| 4253 | { |
| 4254 | Elf_Internal_Rela *rel; |
| 4255 | const Elf_Internal_Rela *relend; |
| 4256 | bfd_vma addend = 0; |
| 4257 | boolean use_saved_addend_p = false; |
| 4258 | struct elf_backend_data *bed; |
| 4259 | |
| 4260 | bed = get_elf_backend_data (output_bfd); |
| 4261 | relend = relocs + input_section->reloc_count * bed->s->int_rels_per_ext_rel; |
| 4262 | for (rel = relocs; rel < relend; ++rel) |
| 4263 | { |
| 4264 | const char *name; |
| 4265 | bfd_vma value; |
| 4266 | reloc_howto_type *howto; |
| 4267 | boolean require_jalx; |
| 4268 | /* True if the relocation is a RELA relocation, rather than a |
| 4269 | REL relocation. */ |
| 4270 | boolean rela_relocation_p = true; |
| 4271 | int r_type = ELF64_MIPS_R_TYPE (rel->r_info); |
| 4272 | const char *msg = (const char *) NULL; |
| 4273 | |
| 4274 | /* Find the relocation howto for this relocation. */ |
| 4275 | howto = &mips_elf64_howto_table_rela[r_type]; |
| 4276 | |
| 4277 | if (!use_saved_addend_p) |
| 4278 | { |
| 4279 | Elf_Internal_Shdr *rel_hdr; |
| 4280 | |
| 4281 | /* If these relocations were originally of the REL variety, |
| 4282 | we must pull the addend out of the field that will be |
| 4283 | relocated. Otherwise, we simply use the contents of the |
| 4284 | RELA relocation. To determine which flavor or relocation |
| 4285 | this is, we depend on the fact that the INPUT_SECTION's |
| 4286 | REL_HDR is read before its REL_HDR2. */ |
| 4287 | rel_hdr = &elf_section_data (input_section)->rel_hdr; |
| 4288 | if ((size_t) (rel - relocs) |
| 4289 | >= (NUM_SHDR_ENTRIES (rel_hdr) * bed->s->int_rels_per_ext_rel)) |
| 4290 | rel_hdr = elf_section_data (input_section)->rel_hdr2; |
| 4291 | if (rel_hdr->sh_entsize |
| 4292 | == (get_elf_backend_data (input_bfd)->s->sizeof_rel)) |
| 4293 | { |
| 4294 | /* Note that this is a REL relocation. */ |
| 4295 | rela_relocation_p = false; |
| 4296 | |
| 4297 | /* Find the relocation howto for this relocation. */ |
| 4298 | howto = &mips_elf64_howto_table_rel[r_type]; |
| 4299 | |
| 4300 | /* Get the addend, which is stored in the input file. */ |
| 4301 | addend = mips_elf64_obtain_contents (howto, |
| 4302 | rel, |
| 4303 | input_bfd, |
| 4304 | contents); |
| 4305 | addend &= howto->src_mask; |
| 4306 | |
| 4307 | /* For some kinds of relocations, the ADDEND is a |
| 4308 | combination of the addend stored in two different |
| 4309 | relocations. */ |
| 4310 | if (r_type == R_MIPS_HI16 |
| 4311 | || r_type == R_MIPS_GNU_REL_HI16 |
| 4312 | || (r_type == R_MIPS_GOT16 |
| 4313 | && mips_elf64_local_relocation_p (input_bfd, rel, |
| 4314 | local_sections, false))) |
| 4315 | { |
| 4316 | bfd_vma l; |
| 4317 | const Elf_Internal_Rela *lo16_relocation; |
| 4318 | reloc_howto_type *lo16_howto; |
| 4319 | int lo; |
| 4320 | |
| 4321 | /* The combined value is the sum of the HI16 addend, |
| 4322 | left-shifted by sixteen bits, and the LO16 |
| 4323 | addend, sign extended. (Usually, the code does |
| 4324 | a `lui' of the HI16 value, and then an `addiu' of |
| 4325 | the LO16 value.) |
| 4326 | |
| 4327 | Scan ahead to find a matching LO16 relocation. */ |
| 4328 | if (r_type == R_MIPS_GNU_REL_HI16) |
| 4329 | lo = R_MIPS_GNU_REL_LO16; |
| 4330 | else |
| 4331 | lo = R_MIPS_LO16; |
| 4332 | lo16_relocation |
| 4333 | = mips_elf64_next_relocation (lo, rel, relend); |
| 4334 | if (lo16_relocation == NULL) |
| 4335 | return false; |
| 4336 | |
| 4337 | /* Obtain the addend kept there. */ |
| 4338 | if (rela_relocation_p == false) |
| 4339 | lo16_howto = &mips_elf64_howto_table_rel[lo]; |
| 4340 | else |
| 4341 | lo16_howto = &mips_elf64_howto_table_rela[lo]; |
| 4342 | l = mips_elf64_obtain_contents (lo16_howto, |
| 4343 | lo16_relocation, |
| 4344 | input_bfd, contents); |
| 4345 | l &= lo16_howto->src_mask; |
| 4346 | l = mips_elf64_sign_extend (l, 16); |
| 4347 | |
| 4348 | addend <<= 16; |
| 4349 | |
| 4350 | /* Compute the combined addend. */ |
| 4351 | addend += l; |
| 4352 | } |
| 4353 | } |
| 4354 | else |
| 4355 | addend = rel->r_addend; |
| 4356 | } |
| 4357 | |
| 4358 | if (info->relocateable) |
| 4359 | { |
| 4360 | Elf_Internal_Sym *sym; |
| 4361 | unsigned long r_symndx; |
| 4362 | |
| 4363 | /* Since we're just relocating, all we need to do is copy |
| 4364 | the relocations back out to the object file, unless |
| 4365 | they're against a section symbol, in which case we need |
| 4366 | to adjust by the section offset, or unless they're GP |
| 4367 | relative in which case we need to adjust by the amount |
| 4368 | that we're adjusting GP in this relocateable object. */ |
| 4369 | |
| 4370 | if (!mips_elf64_local_relocation_p (input_bfd, rel, local_sections, |
| 4371 | false)) |
| 4372 | /* There's nothing to do for non-local relocations. */ |
| 4373 | continue; |
| 4374 | |
| 4375 | if (r_type == R_MIPS_GPREL16 |
| 4376 | || r_type == R_MIPS_GPREL32 |
| 4377 | || r_type == R_MIPS_LITERAL) |
| 4378 | addend -= (_bfd_get_gp_value (output_bfd) |
| 4379 | - _bfd_get_gp_value (input_bfd)); |
| 4380 | else if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2) |
| 4381 | /* The addend is stored without its two least |
| 4382 | significant bits (which are always zero.) In a |
| 4383 | non-relocateable link, calculate_relocation will do |
| 4384 | this shift; here, we must do it ourselves. */ |
| 4385 | addend <<= 2; |
| 4386 | |
| 4387 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 4388 | sym = local_syms + r_symndx; |
| 4389 | if (ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 4390 | /* Adjust the addend appropriately. */ |
| 4391 | addend += local_sections[r_symndx]->output_offset; |
| 4392 | |
| 4393 | #if 0 |
| 4394 | /* If the relocation is for a R_MIPS_HI16 or R_MIPS_GOT16, |
| 4395 | then we only want to write out the high-order 16 bits. |
| 4396 | The subsequent R_MIPS_LO16 will handle the low-order bits. */ |
| 4397 | if (r_type == R_MIPS_HI16 || r_type == R_MIPS_GOT16 |
| 4398 | || r_type == R_MIPS_GNU_REL_HI16) |
| 4399 | addend = mips_elf64_high (addend); |
| 4400 | else if (r_type == R_MIPS_HIGHER) |
| 4401 | addend = mips_elf64_higher (addend); |
| 4402 | else if (r_type == R_MIPS_HIGHEST) |
| 4403 | addend = mips_elf64_highest (addend); |
| 4404 | #endif |
| 4405 | /* If the relocation is for an R_MIPS_26 relocation, then |
| 4406 | the two low-order bits are not stored in the object file; |
| 4407 | they are implicitly zero. */ |
| 4408 | if (r_type == R_MIPS_26 || r_type == R_MIPS_GNU_REL16_S2) |
| 4409 | addend >>= 2; |
| 4410 | |
| 4411 | if (rela_relocation_p) |
| 4412 | /* If this is a RELA relocation, just update the addend. |
| 4413 | We have to cast away constness for REL. */ |
| 4414 | rel->r_addend = addend; |
| 4415 | else |
| 4416 | { |
| 4417 | /* Otherwise, we have to write the value back out. Note |
| 4418 | that we use the source mask, rather than the |
| 4419 | destination mask because the place to which we are |
| 4420 | writing will be source of the addend in the final |
| 4421 | link. */ |
| 4422 | addend &= howto->src_mask; |
| 4423 | |
| 4424 | if (!mips_elf64_perform_relocation (info, howto, rel, addend, |
| 4425 | input_bfd, input_section, |
| 4426 | contents, false)) |
| 4427 | return false; |
| 4428 | } |
| 4429 | |
| 4430 | /* Go on to the next relocation. */ |
| 4431 | continue; |
| 4432 | } |
| 4433 | |
| 4434 | /* In the N32 and 64-bit ABIs there may be multiple consecutive |
| 4435 | relocations for the same offset. In that case we are |
| 4436 | supposed to treat the output of each relocation as the addend |
| 4437 | for the next. */ |
| 4438 | if (rel + 1 < relend |
| 4439 | && rel->r_offset == rel[1].r_offset |
| 4440 | && ELF64_MIPS_R_TYPE (rel[1].r_info) != R_MIPS_NONE) |
| 4441 | use_saved_addend_p = true; |
| 4442 | else |
| 4443 | use_saved_addend_p = false; |
| 4444 | |
| 4445 | /* Figure out what value we are supposed to relocate. */ |
| 4446 | switch (mips_elf64_calculate_relocation (output_bfd, input_bfd, |
| 4447 | input_section, info, rel, |
| 4448 | addend, howto, local_syms, |
| 4449 | local_sections, &value, &name, |
| 4450 | &require_jalx)) |
| 4451 | { |
| 4452 | case bfd_reloc_continue: |
| 4453 | /* There's nothing to do. */ |
| 4454 | continue; |
| 4455 | |
| 4456 | case bfd_reloc_undefined: |
| 4457 | /* mips_elf64_calculate_relocation already called the |
| 4458 | undefined_symbol callback. There's no real point in |
| 4459 | trying to perform the relocation at this point, so we |
| 4460 | just skip ahead to the next relocation. */ |
| 4461 | continue; |
| 4462 | |
| 4463 | case bfd_reloc_notsupported: |
| 4464 | msg = _("internal error: unsupported relocation error"); |
| 4465 | info->callbacks->warning |
| 4466 | (info, msg, name, input_bfd, input_section, rel->r_offset); |
| 4467 | return false; |
| 4468 | |
| 4469 | case bfd_reloc_overflow: |
| 4470 | if (use_saved_addend_p) |
| 4471 | /* Ignore overflow until we reach the last relocation for |
| 4472 | a given location. */ |
| 4473 | ; |
| 4474 | else |
| 4475 | { |
| 4476 | BFD_ASSERT (name != NULL); |
| 4477 | if (! ((*info->callbacks->reloc_overflow) |
| 4478 | (info, name, howto->name, (bfd_vma) 0, |
| 4479 | input_bfd, input_section, rel->r_offset))) |
| 4480 | return false; |
| 4481 | } |
| 4482 | break; |
| 4483 | |
| 4484 | case bfd_reloc_ok: |
| 4485 | break; |
| 4486 | |
| 4487 | default: |
| 4488 | abort (); |
| 4489 | break; |
| 4490 | } |
| 4491 | |
| 4492 | /* If we've got another relocation for the address, keep going |
| 4493 | until we reach the last one. */ |
| 4494 | if (use_saved_addend_p) |
| 4495 | { |
| 4496 | addend = value; |
| 4497 | continue; |
| 4498 | } |
| 4499 | |
| 4500 | /* Actually perform the relocation. */ |
| 4501 | if (!mips_elf64_perform_relocation (info, howto, rel, value, input_bfd, |
| 4502 | input_section, contents, |
| 4503 | require_jalx)) |
| 4504 | return false; |
| 4505 | } |
| 4506 | |
| 4507 | return true; |
| 4508 | } |
| 4509 | |
| 4510 | /* Create dynamic sections when linking against a dynamic object. */ |
| 4511 | |
| 4512 | boolean |
| 4513 | mips_elf64_create_dynamic_sections (abfd, info) |
| 4514 | bfd *abfd; |
| 4515 | struct bfd_link_info *info; |
| 4516 | { |
| 4517 | flagword flags; |
| 4518 | register asection *s; |
| 4519 | |
| 4520 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 4521 | | SEC_LINKER_CREATED | SEC_READONLY); |
| 4522 | |
| 4523 | /* Mips ABI requests the .dynamic section to be read only. */ |
| 4524 | s = bfd_get_section_by_name (abfd, ".dynamic"); |
| 4525 | if (s != NULL) |
| 4526 | { |
| 4527 | if (! bfd_set_section_flags (abfd, s, flags)) |
| 4528 | return false; |
| 4529 | } |
| 4530 | |
| 4531 | /* We need to create .got section. */ |
| 4532 | if (! mips_elf64_create_got_section (abfd, info)) |
| 4533 | return false; |
| 4534 | |
| 4535 | /* Create the .msym section on IRIX6. It is used by the dynamic |
| 4536 | linker to speed up dynamic relocations, and to avoid computing |
| 4537 | the ELF hash for symbols. */ |
| 4538 | if (!mips_elf64_create_msym_section (abfd)) |
| 4539 | return false; |
| 4540 | |
| 4541 | /* Create .stub section. */ |
| 4542 | if (bfd_get_section_by_name (abfd, ".MIPS.stubs") == NULL) |
| 4543 | { |
| 4544 | s = bfd_make_section (abfd, ".MIPS.stubs"); |
| 4545 | if (s == NULL |
| 4546 | || ! bfd_set_section_flags (abfd, s, flags | SEC_CODE) |
| 4547 | || ! bfd_set_section_alignment (abfd, s, 3)) |
| 4548 | return false; |
| 4549 | } |
| 4550 | |
| 4551 | return true; |
| 4552 | } |
| 4553 | |
| 4554 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 4555 | regular object. The current definition is in some section of the |
| 4556 | dynamic object, but we're not including those sections. We have to |
| 4557 | change the definition to something the rest of the link can |
| 4558 | understand. */ |
| 4559 | |
| 4560 | boolean |
| 4561 | mips_elf64_adjust_dynamic_symbol (info, h) |
| 4562 | struct bfd_link_info *info; |
| 4563 | struct elf_link_hash_entry *h; |
| 4564 | { |
| 4565 | bfd *dynobj; |
| 4566 | struct mips_elf64_link_hash_entry *hmips; |
| 4567 | asection *s; |
| 4568 | |
| 4569 | dynobj = elf_hash_table (info)->dynobj; |
| 4570 | |
| 4571 | /* Make sure we know what is going on here. */ |
| 4572 | BFD_ASSERT (dynobj != NULL |
| 4573 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
| 4574 | || h->weakdef != NULL |
| 4575 | || ((h->elf_link_hash_flags |
| 4576 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 4577 | && (h->elf_link_hash_flags |
| 4578 | & ELF_LINK_HASH_REF_REGULAR) != 0 |
| 4579 | && (h->elf_link_hash_flags |
| 4580 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| 4581 | |
| 4582 | /* If this symbol is defined in a dynamic object, we need to copy |
| 4583 | any R_MIPS_32 or R_MIPS_REL32 relocs against it into the output |
| 4584 | file. */ |
| 4585 | hmips = (struct mips_elf64_link_hash_entry *) h; |
| 4586 | if (! info->relocateable |
| 4587 | && hmips->possibly_dynamic_relocs != 0 |
| 4588 | && (h->root.type == bfd_link_hash_defweak |
| 4589 | || (h->elf_link_hash_flags |
| 4590 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| 4591 | { |
| 4592 | mips_elf64_allocate_dynamic_relocations (dynobj, |
| 4593 | hmips->possibly_dynamic_relocs); |
| 4594 | if (hmips->readonly_reloc) |
| 4595 | /* We tell the dynamic linker that there are relocations |
| 4596 | against the text segment. */ |
| 4597 | info->flags |= DF_TEXTREL; |
| 4598 | } |
| 4599 | |
| 4600 | /* For a function, create a stub, if allowed. */ |
| 4601 | if (! hmips->no_fn_stub |
| 4602 | && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) |
| 4603 | { |
| 4604 | if (! elf_hash_table (info)->dynamic_sections_created) |
| 4605 | return true; |
| 4606 | |
| 4607 | /* If this symbol is not defined in a regular file, then set |
| 4608 | the symbol to the stub location. This is required to make |
| 4609 | function pointers compare as equal between the normal |
| 4610 | executable and the shared library. */ |
| 4611 | if ((h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 4612 | { |
| 4613 | /* We need .stub section. */ |
| 4614 | s = bfd_get_section_by_name (dynobj, ".MIPS.stubs"); |
| 4615 | BFD_ASSERT (s != NULL); |
| 4616 | |
| 4617 | h->root.u.def.section = s; |
| 4618 | h->root.u.def.value = s->_raw_size; |
| 4619 | |
| 4620 | /* XXX Write this stub address somewhere. */ |
| 4621 | h->plt.offset = s->_raw_size; |
| 4622 | |
| 4623 | /* Make room for this stub code. */ |
| 4624 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; |
| 4625 | |
| 4626 | /* The last half word of the stub will be filled with the index |
| 4627 | of this symbol in .dynsym section. */ |
| 4628 | return true; |
| 4629 | } |
| 4630 | } |
| 4631 | else if ((h->type == STT_FUNC) |
| 4632 | && (h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) == 0) |
| 4633 | { |
| 4634 | /* This will set the entry for this symbol in the GOT to 0, and |
| 4635 | the dynamic linker will take care of this. */ |
| 4636 | h->root.u.def.value = 0; |
| 4637 | return true; |
| 4638 | } |
| 4639 | |
| 4640 | /* If this is a weak symbol, and there is a real definition, the |
| 4641 | processor independent code will have arranged for us to see the |
| 4642 | real definition first, and we can just use the same value. */ |
| 4643 | if (h->weakdef != NULL) |
| 4644 | { |
| 4645 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 4646 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 4647 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 4648 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 4649 | return true; |
| 4650 | } |
| 4651 | |
| 4652 | /* This is a reference to a symbol defined by a dynamic object which |
| 4653 | is not a function. */ |
| 4654 | |
| 4655 | return true; |
| 4656 | } |
| 4657 | |
| 4658 | /* This function is called after all the input files have been read, |
| 4659 | and the input sections have been assigned to output sections. */ |
| 4660 | |
| 4661 | boolean |
| 4662 | mips_elf64_always_size_sections (output_bfd, info) |
| 4663 | bfd *output_bfd ATTRIBUTE_UNUSED; |
| 4664 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 4665 | { |
| 4666 | if (info->relocateable |
| 4667 | || ! mips_elf64_hash_table (info)->mips16_stubs_seen) |
| 4668 | return true; |
| 4669 | |
| 4670 | mips_elf64_link_hash_traverse (mips_elf64_hash_table (info), |
| 4671 | mips_elf64_check_mips16_stubs, |
| 4672 | (PTR) NULL); |
| 4673 | |
| 4674 | return true; |
| 4675 | } |
| 4676 | |
| 4677 | /* Check the mips16 stubs for a particular symbol, and see if we can |
| 4678 | discard them. */ |
| 4679 | |
| 4680 | static boolean |
| 4681 | mips_elf64_check_mips16_stubs (h, data) |
| 4682 | struct mips_elf64_link_hash_entry *h; |
| 4683 | PTR data ATTRIBUTE_UNUSED; |
| 4684 | { |
| 4685 | if (h->fn_stub != NULL |
| 4686 | && ! h->need_fn_stub) |
| 4687 | { |
| 4688 | /* We don't need the fn_stub; the only references to this symbol |
| 4689 | are 16 bit calls. Clobber the size to 0 to prevent it from |
| 4690 | being included in the link. */ |
| 4691 | h->fn_stub->_raw_size = 0; |
| 4692 | h->fn_stub->_cooked_size = 0; |
| 4693 | h->fn_stub->flags &= ~SEC_RELOC; |
| 4694 | h->fn_stub->reloc_count = 0; |
| 4695 | h->fn_stub->flags |= SEC_EXCLUDE; |
| 4696 | } |
| 4697 | |
| 4698 | if (h->call_stub != NULL |
| 4699 | && h->root.other == STO_MIPS16) |
| 4700 | { |
| 4701 | /* We don't need the call_stub; this is a 16 bit function, so |
| 4702 | calls from other 16 bit functions are OK. Clobber the size |
| 4703 | to 0 to prevent it from being included in the link. */ |
| 4704 | h->call_stub->_raw_size = 0; |
| 4705 | h->call_stub->_cooked_size = 0; |
| 4706 | h->call_stub->flags &= ~SEC_RELOC; |
| 4707 | h->call_stub->reloc_count = 0; |
| 4708 | h->call_stub->flags |= SEC_EXCLUDE; |
| 4709 | } |
| 4710 | |
| 4711 | if (h->call_fp_stub != NULL |
| 4712 | && h->root.other == STO_MIPS16) |
| 4713 | { |
| 4714 | /* We don't need the call_stub; this is a 16 bit function, so |
| 4715 | calls from other 16 bit functions are OK. Clobber the size |
| 4716 | to 0 to prevent it from being included in the link. */ |
| 4717 | h->call_fp_stub->_raw_size = 0; |
| 4718 | h->call_fp_stub->_cooked_size = 0; |
| 4719 | h->call_fp_stub->flags &= ~SEC_RELOC; |
| 4720 | h->call_fp_stub->reloc_count = 0; |
| 4721 | h->call_fp_stub->flags |= SEC_EXCLUDE; |
| 4722 | } |
| 4723 | |
| 4724 | return true; |
| 4725 | } |
| 4726 | |
| 4727 | /* Set the sizes of the dynamic sections. */ |
| 4728 | |
| 4729 | boolean |
| 4730 | mips_elf64_size_dynamic_sections (output_bfd, info) |
| 4731 | bfd *output_bfd; |
| 4732 | struct bfd_link_info *info; |
| 4733 | { |
| 4734 | bfd *dynobj; |
| 4735 | asection *s; |
| 4736 | boolean reltext; |
| 4737 | struct mips_elf64_got_info *g = NULL; |
| 4738 | |
| 4739 | dynobj = elf_hash_table (info)->dynobj; |
| 4740 | BFD_ASSERT (dynobj != NULL); |
| 4741 | |
| 4742 | if (elf_hash_table (info)->dynamic_sections_created) |
| 4743 | { |
| 4744 | /* Set the contents of the .interp section to the interpreter. */ |
| 4745 | if (! info->shared) |
| 4746 | { |
| 4747 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 4748 | BFD_ASSERT (s != NULL); |
| 4749 | s->_raw_size = strlen ("/usr/lib64/libc.so.1") + 1; |
| 4750 | s->contents = (bfd_byte *) "/usr/lib64/libc.so.1"; |
| 4751 | } |
| 4752 | } |
| 4753 | |
| 4754 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 4755 | determined the sizes of the various dynamic sections. Allocate |
| 4756 | memory for them. */ |
| 4757 | reltext = false; |
| 4758 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 4759 | { |
| 4760 | const char *name; |
| 4761 | boolean strip; |
| 4762 | |
| 4763 | /* It's OK to base decisions on the section name, because none |
| 4764 | of the dynobj section names depend upon the input files. */ |
| 4765 | name = bfd_get_section_name (dynobj, s); |
| 4766 | |
| 4767 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 4768 | continue; |
| 4769 | |
| 4770 | strip = false; |
| 4771 | |
| 4772 | if (strncmp (name, ".rel", 4) == 0) |
| 4773 | { |
| 4774 | if (s->_raw_size == 0) |
| 4775 | { |
| 4776 | /* We only strip the section if the output section name |
| 4777 | has the same name. Otherwise, there might be several |
| 4778 | input sections for this output section. FIXME: This |
| 4779 | code is probably not needed these days anyhow, since |
| 4780 | the linker now does not create empty output sections. */ |
| 4781 | if (s->output_section != NULL |
| 4782 | && strcmp (name, |
| 4783 | bfd_get_section_name (s->output_section->owner, |
| 4784 | s->output_section)) == 0) |
| 4785 | strip = true; |
| 4786 | } |
| 4787 | else |
| 4788 | { |
| 4789 | const char *outname; |
| 4790 | asection *target; |
| 4791 | |
| 4792 | /* If this relocation section applies to a read only |
| 4793 | section, then we probably need a DT_TEXTREL entry. |
| 4794 | If the relocation section is .rel.dyn, we always |
| 4795 | assert a DT_TEXTREL entry rather than testing whether |
| 4796 | there exists a relocation to a read only section or |
| 4797 | not. */ |
| 4798 | outname = bfd_get_section_name (output_bfd, |
| 4799 | s->output_section); |
| 4800 | target = bfd_get_section_by_name (output_bfd, outname + 4); |
| 4801 | if ((target != NULL |
| 4802 | && (target->flags & SEC_READONLY) != 0 |
| 4803 | && (target->flags & SEC_ALLOC) != 0) |
| 4804 | || strcmp (outname, "rel.dyn") == 0) |
| 4805 | reltext = true; |
| 4806 | |
| 4807 | /* We use the reloc_count field as a counter if we need |
| 4808 | to copy relocs into the output file. */ |
| 4809 | if (strcmp (name, "rel.dyn") != 0) |
| 4810 | s->reloc_count = 0; |
| 4811 | } |
| 4812 | } |
| 4813 | else if (strncmp (name, ".got", 4) == 0) |
| 4814 | { |
| 4815 | int i; |
| 4816 | bfd_size_type loadable_size = 0; |
| 4817 | bfd_size_type local_gotno; |
| 4818 | bfd *sub; |
| 4819 | |
| 4820 | BFD_ASSERT (elf_section_data (s) != NULL); |
| 4821 | g = (struct mips_elf64_got_info *) elf_section_data (s)->tdata; |
| 4822 | BFD_ASSERT (g != NULL); |
| 4823 | |
| 4824 | /* Calculate the total loadable size of the output. That |
| 4825 | will give us the maximum number of GOT_PAGE entries |
| 4826 | required. */ |
| 4827 | for (sub = info->input_bfds; sub; sub = sub->link_next) |
| 4828 | { |
| 4829 | asection *subsection; |
| 4830 | |
| 4831 | for (subsection = sub->sections; |
| 4832 | subsection; |
| 4833 | subsection = subsection->next) |
| 4834 | { |
| 4835 | if ((subsection->flags & SEC_ALLOC) == 0) |
| 4836 | continue; |
| 4837 | loadable_size += (subsection->_raw_size + 0xf) & ~0xf; |
| 4838 | } |
| 4839 | } |
| 4840 | loadable_size += MIPS_FUNCTION_STUB_SIZE; |
| 4841 | |
| 4842 | /* Assume there are two loadable segments consisting of |
| 4843 | contiguous sections. Is 5 enough? */ |
| 4844 | local_gotno = (loadable_size >> 16) + 5; |
| 4845 | /* It's possible we will need GOT_PAGE entries as well as |
| 4846 | GOT16 entries. Often, these will be able to share GOT |
| 4847 | entries, but not always. */ |
| 4848 | local_gotno *= 2; |
| 4849 | |
| 4850 | g->local_gotno += local_gotno; |
| 4851 | s->_raw_size += local_gotno * 8; |
| 4852 | |
| 4853 | /* There has to be a global GOT entry for every symbol with |
| 4854 | a dynamic symbol table index of DT_MIPS_GOTSYM or |
| 4855 | higher. Therefore, it make sense to put those symbols |
| 4856 | that need GOT entries at the end of the symbol table. We |
| 4857 | do that here. */ |
| 4858 | if (!mips_elf64_sort_hash_table (info, 1)) |
| 4859 | return false; |
| 4860 | |
| 4861 | if (g->global_gotsym != NULL) |
| 4862 | i = elf_hash_table (info)->dynsymcount - g->global_gotsym->dynindx; |
| 4863 | else |
| 4864 | /* If there are no global symbols, or none requiring |
| 4865 | relocations, then GLOBAL_GOTSYM will be NULL. */ |
| 4866 | i = 0; |
| 4867 | g->global_gotno = i; |
| 4868 | s->_raw_size += i * 8; |
| 4869 | } |
| 4870 | else if (strcmp (name, ".MIPS.stubs") == 0) |
| 4871 | { |
| 4872 | /* Irix rld assumes that the function stub isn't at the end |
| 4873 | of .text section. So put a dummy. XXX */ |
| 4874 | s->_raw_size += MIPS_FUNCTION_STUB_SIZE; |
| 4875 | } |
| 4876 | else if (strcmp (name, ".msym") |
| 4877 | == 0) |
| 4878 | s->_raw_size = (sizeof (Elf32_External_Msym) |
| 4879 | * (elf_hash_table (info)->dynsymcount |
| 4880 | + bfd_count_sections (output_bfd))); |
| 4881 | else if (strncmp (name, ".init", 5) != 0) |
| 4882 | { |
| 4883 | /* It's not one of our sections, so don't allocate space. */ |
| 4884 | continue; |
| 4885 | } |
| 4886 | |
| 4887 | if (strip) |
| 4888 | { |
| 4889 | _bfd_strip_section_from_output (info, s); |
| 4890 | continue; |
| 4891 | } |
| 4892 | |
| 4893 | /* Allocate memory for the section contents. */ |
| 4894 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
| 4895 | if (s->contents == NULL && s->_raw_size != 0) |
| 4896 | { |
| 4897 | bfd_set_error (bfd_error_no_memory); |
| 4898 | return false; |
| 4899 | } |
| 4900 | } |
| 4901 | |
| 4902 | if (elf_hash_table (info)->dynamic_sections_created) |
| 4903 | { |
| 4904 | /* Add some entries to the .dynamic section. We fill in the |
| 4905 | values later, in elf_mips_finish_dynamic_sections, but we |
| 4906 | must add the entries now so that we get the correct size for |
| 4907 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 4908 | dynamic linker and used by the debugger. */ |
| 4909 | if (! info->shared) |
| 4910 | { |
| 4911 | /* SGI object has the equivalence of DT_DEBUG in the |
| 4912 | DT_MIPS_RLD_MAP entry. */ |
| 4913 | if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_MAP, 0)) |
| 4914 | return false; |
| 4915 | if (!SGI_COMPAT (output_bfd)) |
| 4916 | { |
| 4917 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) |
| 4918 | return false; |
| 4919 | } |
| 4920 | } |
| 4921 | else |
| 4922 | { |
| 4923 | /* Shared libraries on traditional mips have DT_DEBUG. */ |
| 4924 | if (!SGI_COMPAT (output_bfd)) |
| 4925 | { |
| 4926 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) |
| 4927 | return false; |
| 4928 | } |
| 4929 | } |
| 4930 | |
| 4931 | if (reltext && SGI_COMPAT (output_bfd)) |
| 4932 | info->flags |= DF_TEXTREL; |
| 4933 | |
| 4934 | if ((info->flags & DF_TEXTREL) != 0) |
| 4935 | { |
| 4936 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) |
| 4937 | return false; |
| 4938 | } |
| 4939 | |
| 4940 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) |
| 4941 | return false; |
| 4942 | |
| 4943 | if (bfd_get_section_by_name (dynobj, "rel.dyn")) |
| 4944 | { |
| 4945 | if (! bfd_elf64_add_dynamic_entry (info, DT_REL, 0)) |
| 4946 | return false; |
| 4947 | |
| 4948 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELSZ, 0)) |
| 4949 | return false; |
| 4950 | |
| 4951 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELENT, 0)) |
| 4952 | return false; |
| 4953 | } |
| 4954 | |
| 4955 | if (SGI_COMPAT (output_bfd)) |
| 4956 | { |
| 4957 | if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICTNO, 0)) |
| 4958 | return false; |
| 4959 | } |
| 4960 | |
| 4961 | if (SGI_COMPAT (output_bfd)) |
| 4962 | { |
| 4963 | if (!bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLISTNO, 0)) |
| 4964 | return false; |
| 4965 | } |
| 4966 | |
| 4967 | if (bfd_get_section_by_name (dynobj, ".conflict") != NULL) |
| 4968 | { |
| 4969 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_CONFLICT, 0)) |
| 4970 | return false; |
| 4971 | |
| 4972 | s = bfd_get_section_by_name (dynobj, ".liblist"); |
| 4973 | BFD_ASSERT (s != NULL); |
| 4974 | |
| 4975 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LIBLIST, 0)) |
| 4976 | return false; |
| 4977 | } |
| 4978 | |
| 4979 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_RLD_VERSION, 0)) |
| 4980 | return false; |
| 4981 | |
| 4982 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_FLAGS, 0)) |
| 4983 | return false; |
| 4984 | |
| 4985 | #if 0 |
| 4986 | /* Time stamps in executable files are a bad idea. */ |
| 4987 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_TIME_STAMP, 0)) |
| 4988 | return false; |
| 4989 | #endif |
| 4990 | |
| 4991 | #if 0 /* FIXME */ |
| 4992 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_ICHECKSUM, 0)) |
| 4993 | return false; |
| 4994 | #endif |
| 4995 | |
| 4996 | #if 0 /* FIXME */ |
| 4997 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_IVERSION, 0)) |
| 4998 | return false; |
| 4999 | #endif |
| 5000 | |
| 5001 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_BASE_ADDRESS, 0)) |
| 5002 | return false; |
| 5003 | |
| 5004 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_LOCAL_GOTNO, 0)) |
| 5005 | return false; |
| 5006 | |
| 5007 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_SYMTABNO, 0)) |
| 5008 | return false; |
| 5009 | |
| 5010 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_UNREFEXTNO, 0)) |
| 5011 | return false; |
| 5012 | |
| 5013 | if (! bfd_elf64_add_dynamic_entry (info, DT_MIPS_GOTSYM, 0)) |
| 5014 | return false; |
| 5015 | |
| 5016 | if ((bfd_get_section_by_name(dynobj, ".MIPS.options")) |
| 5017 | && !bfd_elf64_add_dynamic_entry (info, DT_MIPS_OPTIONS, 0)) |
| 5018 | return false; |
| 5019 | |
| 5020 | if (bfd_get_section_by_name (dynobj, ".msym") |
| 5021 | && !bfd_elf64_add_dynamic_entry (info, DT_MIPS_MSYM, 0)) |
| 5022 | return false; |
| 5023 | } |
| 5024 | |
| 5025 | return true; |
| 5026 | } |
| 5027 | |
| 5028 | /* Finish up dynamic symbol handling. We set the contents of various |
| 5029 | dynamic sections here. */ |
| 5030 | |
| 5031 | boolean |
| 5032 | mips_elf64_finish_dynamic_symbol (output_bfd, info, h, sym) |
| 5033 | bfd *output_bfd; |
| 5034 | struct bfd_link_info *info; |
| 5035 | struct elf_link_hash_entry *h; |
| 5036 | Elf_Internal_Sym *sym; |
| 5037 | { |
| 5038 | bfd *dynobj; |
| 5039 | bfd_vma gval; |
| 5040 | asection *sgot; |
| 5041 | asection *smsym; |
| 5042 | struct mips_elf64_got_info *g; |
| 5043 | const char *name; |
| 5044 | struct mips_elf64_link_hash_entry *mh; |
| 5045 | |
| 5046 | dynobj = elf_hash_table (info)->dynobj; |
| 5047 | gval = sym->st_value; |
| 5048 | mh = (struct mips_elf64_link_hash_entry *) h; |
| 5049 | |
| 5050 | if (h->plt.offset != (bfd_vma) -1) |
| 5051 | { |
| 5052 | asection *s; |
| 5053 | bfd_byte stub[MIPS_FUNCTION_STUB_SIZE]; |
| 5054 | |
| 5055 | /* This symbol has a stub. Set it up. */ |
| 5056 | |
| 5057 | BFD_ASSERT (h->dynindx != -1); |
| 5058 | |
| 5059 | s = bfd_get_section_by_name (dynobj, ".MIPS.stubs"); |
| 5060 | BFD_ASSERT (s != NULL); |
| 5061 | |
| 5062 | /* FIXME: Can h->dynindex be more than 64K? */ |
| 5063 | if (h->dynindx & 0xffff0000) |
| 5064 | return false; |
| 5065 | |
| 5066 | /* Fill the stub. */ |
| 5067 | bfd_put_32 (output_bfd, STUB_LW, stub); |
| 5068 | bfd_put_32 (output_bfd, STUB_MOVE, stub + 4); |
| 5069 | bfd_put_32 (output_bfd, STUB_JALR, stub + 8); |
| 5070 | bfd_put_32 (output_bfd, STUB_LI16 + h->dynindx, stub + 12); |
| 5071 | |
| 5072 | BFD_ASSERT (h->plt.offset <= s->_raw_size); |
| 5073 | memcpy (s->contents + h->plt.offset, stub, MIPS_FUNCTION_STUB_SIZE); |
| 5074 | |
| 5075 | /* Mark the symbol as undefined. plt.offset != -1 occurs |
| 5076 | only for the referenced symbol. */ |
| 5077 | sym->st_shndx = SHN_UNDEF; |
| 5078 | |
| 5079 | /* The run-time linker uses the st_value field of the symbol |
| 5080 | to reset the global offset table entry for this external |
| 5081 | to its stub address when unlinking a shared object. */ |
| 5082 | gval = s->output_section->vma + s->output_offset + h->plt.offset; |
| 5083 | sym->st_value = gval; |
| 5084 | } |
| 5085 | |
| 5086 | BFD_ASSERT (h->dynindx != -1 |
| 5087 | || (h->elf_link_hash_flags & ELF_LINK_FORCED_LOCAL) != 0); |
| 5088 | |
| 5089 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 5090 | BFD_ASSERT (sgot != NULL); |
| 5091 | BFD_ASSERT (elf_section_data (sgot) != NULL); |
| 5092 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; |
| 5093 | BFD_ASSERT (g != NULL); |
| 5094 | |
| 5095 | /* Run through the global symbol table, creating GOT entries for all |
| 5096 | the symbols that need them. */ |
| 5097 | if (g->global_gotsym != NULL |
| 5098 | && h->dynindx >= g->global_gotsym->dynindx) |
| 5099 | { |
| 5100 | bfd_vma offset; |
| 5101 | bfd_vma value; |
| 5102 | |
| 5103 | if (sym->st_value) |
| 5104 | value = sym->st_value; |
| 5105 | else |
| 5106 | { |
| 5107 | /* For an entity defined in a shared object, this will be |
| 5108 | NULL. (For functions in shared objects for |
| 5109 | which we have created stubs, ST_VALUE will be non-NULL. |
| 5110 | That's because such the functions are now no longer defined |
| 5111 | in a shared object.) */ |
| 5112 | |
| 5113 | if (info->shared && h->root.type == bfd_link_hash_undefined) |
| 5114 | value = 0; |
| 5115 | else |
| 5116 | value = h->root.u.def.value; |
| 5117 | } |
| 5118 | offset = mips_elf64_global_got_index (dynobj, h); |
| 5119 | bfd_put_64 (output_bfd, value, sgot->contents + offset); |
| 5120 | } |
| 5121 | |
| 5122 | /* Create a .msym entry, if appropriate. */ |
| 5123 | smsym = bfd_get_section_by_name (dynobj, ".msym"); |
| 5124 | if (smsym) |
| 5125 | { |
| 5126 | Elf32_Internal_Msym msym; |
| 5127 | |
| 5128 | msym.ms_hash_value = bfd_elf_hash (h->root.root.string); |
| 5129 | /* It is undocumented what the `1' indicates, but IRIX6 uses |
| 5130 | this value. */ |
| 5131 | msym.ms_info = ELF32_MS_INFO (mh->min_dyn_reloc_index, 1); |
| 5132 | mips_elf64_swap_msym_out |
| 5133 | (dynobj, &msym, |
| 5134 | ((Elf32_External_Msym *) smsym->contents) + h->dynindx); |
| 5135 | } |
| 5136 | |
| 5137 | /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */ |
| 5138 | name = h->root.root.string; |
| 5139 | if (strcmp (name, "_DYNAMIC") == 0 |
| 5140 | || strcmp (name, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 5141 | sym->st_shndx = SHN_ABS; |
| 5142 | else if (strcmp (name, "_DYNAMIC_LINK") == 0 |
| 5143 | || strcmp (name, "_DYNAMIC_LINKING") == 0) |
| 5144 | { |
| 5145 | sym->st_shndx = SHN_ABS; |
| 5146 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); |
| 5147 | sym->st_value = 1; |
| 5148 | } |
| 5149 | else if (sym->st_shndx != SHN_UNDEF && sym->st_shndx != SHN_ABS) |
| 5150 | { |
| 5151 | if (h->type == STT_FUNC) |
| 5152 | sym->st_shndx = SHN_MIPS_TEXT; |
| 5153 | else if (h->type == STT_OBJECT) |
| 5154 | sym->st_shndx = SHN_MIPS_DATA; |
| 5155 | } |
| 5156 | |
| 5157 | /* Handle the IRIX6-specific symbols. */ |
| 5158 | |
| 5159 | { |
| 5160 | /* The linker script takes care of providing names and values for |
| 5161 | these, but we must place them into the right sections. */ |
| 5162 | static const char* const text_section_symbols[] = { |
| 5163 | "_ftext", |
| 5164 | "_etext", |
| 5165 | "__dso_displacement", |
| 5166 | "__elf_header", |
| 5167 | "__program_header_table", |
| 5168 | NULL |
| 5169 | }; |
| 5170 | |
| 5171 | static const char* const data_section_symbols[] = { |
| 5172 | "_fdata", |
| 5173 | "_edata", |
| 5174 | "_end", |
| 5175 | "_fbss", |
| 5176 | NULL |
| 5177 | }; |
| 5178 | |
| 5179 | const char* const *p; |
| 5180 | int i; |
| 5181 | |
| 5182 | for (i = 0; i < 2; ++i) |
| 5183 | for (p = (i == 0) ? text_section_symbols : data_section_symbols; |
| 5184 | *p; |
| 5185 | ++p) |
| 5186 | if (strcmp (*p, name) == 0) |
| 5187 | { |
| 5188 | /* All of these symbols are given type STT_SECTION by the |
| 5189 | IRIX6 linker. */ |
| 5190 | sym->st_info = ELF_ST_INFO (STB_GLOBAL, STT_SECTION); |
| 5191 | |
| 5192 | /* The IRIX linker puts these symbols in special sections. */ |
| 5193 | if (i == 0) |
| 5194 | sym->st_shndx = SHN_MIPS_TEXT; |
| 5195 | else |
| 5196 | sym->st_shndx = SHN_MIPS_DATA; |
| 5197 | |
| 5198 | break; |
| 5199 | } |
| 5200 | } |
| 5201 | |
| 5202 | return true; |
| 5203 | } |
| 5204 | |
| 5205 | /* Finish up the dynamic sections. */ |
| 5206 | |
| 5207 | boolean |
| 5208 | mips_elf64_finish_dynamic_sections (output_bfd, info) |
| 5209 | bfd *output_bfd; |
| 5210 | struct bfd_link_info *info; |
| 5211 | { |
| 5212 | bfd *dynobj; |
| 5213 | asection *sdyn; |
| 5214 | asection *sgot; |
| 5215 | struct mips_elf64_got_info *g; |
| 5216 | |
| 5217 | dynobj = elf_hash_table (info)->dynobj; |
| 5218 | |
| 5219 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 5220 | |
| 5221 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 5222 | if (sgot == NULL) |
| 5223 | g = NULL; |
| 5224 | else |
| 5225 | { |
| 5226 | BFD_ASSERT (elf_section_data (sgot) != NULL); |
| 5227 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; |
| 5228 | BFD_ASSERT (g != NULL); |
| 5229 | } |
| 5230 | |
| 5231 | if (elf_hash_table (info)->dynamic_sections_created) |
| 5232 | { |
| 5233 | bfd_byte *b; |
| 5234 | |
| 5235 | BFD_ASSERT (sdyn != NULL); |
| 5236 | BFD_ASSERT (g != NULL); |
| 5237 | |
| 5238 | for (b = sdyn->contents; |
| 5239 | b < sdyn->contents + sdyn->_raw_size; |
| 5240 | b += get_elf_backend_data (dynobj)->s->sizeof_dyn) |
| 5241 | { |
| 5242 | Elf_Internal_Dyn dyn; |
| 5243 | const char *name; |
| 5244 | size_t elemsize; |
| 5245 | asection *s; |
| 5246 | boolean swap_out_p; |
| 5247 | |
| 5248 | /* Read in the current dynamic entry. */ |
| 5249 | (*get_elf_backend_data (dynobj)->s->swap_dyn_in) (dynobj, b, &dyn); |
| 5250 | |
| 5251 | /* Assume that we're going to modify it and write it out. */ |
| 5252 | swap_out_p = true; |
| 5253 | |
| 5254 | switch (dyn.d_tag) |
| 5255 | { |
| 5256 | case DT_RELENT: |
| 5257 | s = bfd_get_section_by_name(dynobj, "rel.dyn"); |
| 5258 | BFD_ASSERT (s != NULL); |
| 5259 | dyn.d_un.d_val = get_elf_backend_data (dynobj)->s->sizeof_rel; |
| 5260 | break; |
| 5261 | |
| 5262 | case DT_STRSZ: |
| 5263 | /* Rewrite DT_STRSZ. */ |
| 5264 | dyn.d_un.d_val = |
| 5265 | _bfd_elf_strtab_size (elf_hash_table (info)->dynstr); |
| 5266 | break; |
| 5267 | |
| 5268 | case DT_PLTGOT: |
| 5269 | name = ".got"; |
| 5270 | goto get_vma; |
| 5271 | case DT_MIPS_CONFLICT: |
| 5272 | name = ".conflict"; |
| 5273 | goto get_vma; |
| 5274 | case DT_MIPS_LIBLIST: |
| 5275 | name = ".liblist"; |
| 5276 | get_vma: |
| 5277 | s = bfd_get_section_by_name (output_bfd, name); |
| 5278 | BFD_ASSERT (s != NULL); |
| 5279 | dyn.d_un.d_ptr = s->vma; |
| 5280 | break; |
| 5281 | |
| 5282 | case DT_MIPS_RLD_VERSION: |
| 5283 | dyn.d_un.d_val = 1; /* XXX */ |
| 5284 | break; |
| 5285 | |
| 5286 | case DT_MIPS_FLAGS: |
| 5287 | dyn.d_un.d_val = RHF_NOTPOT; /* XXX */ |
| 5288 | break; |
| 5289 | |
| 5290 | case DT_MIPS_CONFLICTNO: |
| 5291 | name = ".conflict"; |
| 5292 | elemsize = sizeof (Elf32_Conflict); |
| 5293 | goto set_elemno; |
| 5294 | |
| 5295 | case DT_MIPS_LIBLISTNO: |
| 5296 | name = ".liblist"; |
| 5297 | elemsize = sizeof (Elf32_Lib); |
| 5298 | set_elemno: |
| 5299 | s = bfd_get_section_by_name (output_bfd, name); |
| 5300 | if (s != NULL) |
| 5301 | { |
| 5302 | if (s->_cooked_size != 0) |
| 5303 | dyn.d_un.d_val = s->_cooked_size / elemsize; |
| 5304 | else |
| 5305 | dyn.d_un.d_val = s->_raw_size / elemsize; |
| 5306 | } |
| 5307 | else |
| 5308 | dyn.d_un.d_val = 0; |
| 5309 | break; |
| 5310 | |
| 5311 | case DT_MIPS_TIME_STAMP: |
| 5312 | time ((time_t *) &dyn.d_un.d_val); |
| 5313 | break; |
| 5314 | |
| 5315 | case DT_MIPS_ICHECKSUM: |
| 5316 | /* XXX FIXME: */ |
| 5317 | swap_out_p = false; |
| 5318 | break; |
| 5319 | |
| 5320 | case DT_MIPS_IVERSION: |
| 5321 | /* XXX FIXME: */ |
| 5322 | swap_out_p = false; |
| 5323 | break; |
| 5324 | |
| 5325 | case DT_MIPS_BASE_ADDRESS: |
| 5326 | s = output_bfd->sections; |
| 5327 | BFD_ASSERT (s != NULL); |
| 5328 | dyn.d_un.d_ptr = s->vma & ~(0xffff); |
| 5329 | break; |
| 5330 | |
| 5331 | case DT_MIPS_LOCAL_GOTNO: |
| 5332 | dyn.d_un.d_val = g->local_gotno; |
| 5333 | break; |
| 5334 | |
| 5335 | case DT_MIPS_UNREFEXTNO: |
| 5336 | /* The index into the dynamic symbol table which is the |
| 5337 | entry of the first external symbol that is not |
| 5338 | referenced within the same object. */ |
| 5339 | dyn.d_un.d_val = bfd_count_sections (output_bfd) + 1; |
| 5340 | break; |
| 5341 | |
| 5342 | case DT_MIPS_GOTSYM: |
| 5343 | if (g->global_gotsym) |
| 5344 | { |
| 5345 | dyn.d_un.d_val = g->global_gotsym->dynindx; |
| 5346 | break; |
| 5347 | } |
| 5348 | /* In case if we don't have global got symbols we default |
| 5349 | to setting DT_MIPS_GOTSYM to the same value as |
| 5350 | DT_MIPS_SYMTABNO, so we just fall through. */ |
| 5351 | |
| 5352 | case DT_MIPS_SYMTABNO: |
| 5353 | name = ".dynsym"; |
| 5354 | elemsize = get_elf_backend_data (output_bfd)->s->sizeof_sym; |
| 5355 | s = bfd_get_section_by_name (output_bfd, name); |
| 5356 | BFD_ASSERT (s != NULL); |
| 5357 | |
| 5358 | if (s->_cooked_size != 0) |
| 5359 | dyn.d_un.d_val = s->_cooked_size / elemsize; |
| 5360 | else |
| 5361 | dyn.d_un.d_val = s->_raw_size / elemsize; |
| 5362 | break; |
| 5363 | |
| 5364 | case DT_MIPS_HIPAGENO: |
| 5365 | dyn.d_un.d_val = g->local_gotno - MIPS_RESERVED_GOTNO; |
| 5366 | break; |
| 5367 | |
| 5368 | case DT_MIPS_OPTIONS: |
| 5369 | s = bfd_get_section_by_name(output_bfd, ".MIPS.options"); |
| 5370 | dyn.d_un.d_ptr = s->vma; |
| 5371 | break; |
| 5372 | |
| 5373 | case DT_MIPS_MSYM: |
| 5374 | s = bfd_get_section_by_name(output_bfd, ".msym"); |
| 5375 | dyn.d_un.d_ptr = s->vma; |
| 5376 | break; |
| 5377 | |
| 5378 | default: |
| 5379 | swap_out_p = false; |
| 5380 | break; |
| 5381 | } |
| 5382 | |
| 5383 | if (swap_out_p) |
| 5384 | (*get_elf_backend_data (dynobj)->s->swap_dyn_out) |
| 5385 | (dynobj, &dyn, b); |
| 5386 | } |
| 5387 | } |
| 5388 | |
| 5389 | /* The first entry of the global offset table will be filled at |
| 5390 | runtime. The second entry will be used by some runtime loaders. |
| 5391 | This isn't the case of Irix rld. */ |
| 5392 | if (sgot != NULL && sgot->_raw_size > 0) |
| 5393 | { |
| 5394 | bfd_put_64 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 5395 | bfd_put_64 (output_bfd, (bfd_vma) 0x80000000, sgot->contents + 8); |
| 5396 | } |
| 5397 | |
| 5398 | if (sgot != NULL) |
| 5399 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 8; |
| 5400 | |
| 5401 | { |
| 5402 | asection *smsym; |
| 5403 | asection *s; |
| 5404 | |
| 5405 | /* ??? The section symbols for the output sections were set up in |
| 5406 | _bfd_elf_final_link. SGI sets the STT_NOTYPE attribute for these |
| 5407 | symbols. Should we do so? */ |
| 5408 | |
| 5409 | smsym = bfd_get_section_by_name (dynobj, ".msym"); |
| 5410 | if (smsym != NULL) |
| 5411 | { |
| 5412 | Elf32_Internal_Msym msym; |
| 5413 | |
| 5414 | msym.ms_hash_value = 0; |
| 5415 | msym.ms_info = ELF32_MS_INFO (0, 1); |
| 5416 | |
| 5417 | for (s = output_bfd->sections; s != NULL; s = s->next) |
| 5418 | { |
| 5419 | long dynindx = elf_section_data (s)->dynindx; |
| 5420 | |
| 5421 | mips_elf64_swap_msym_out |
| 5422 | (output_bfd, &msym, |
| 5423 | (((Elf32_External_Msym *) smsym->contents) |
| 5424 | + dynindx)); |
| 5425 | } |
| 5426 | } |
| 5427 | |
| 5428 | /* Clean up a first relocation in .rel.dyn. */ |
| 5429 | s = bfd_get_section_by_name (dynobj, "rel.dyn"); |
| 5430 | if (s != NULL && s->_raw_size > 0) |
| 5431 | memset (s->contents, 0, get_elf_backend_data (dynobj)->s->sizeof_rel); |
| 5432 | } |
| 5433 | |
| 5434 | return true; |
| 5435 | } |
| 5436 | |
| 5437 | /* Return the section that should be marked against GC for a given |
| 5438 | relocation. */ |
| 5439 | |
| 5440 | asection * |
| 5441 | mips_elf64_gc_mark_hook (abfd, info, rel, h, sym) |
| 5442 | bfd *abfd; |
| 5443 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 5444 | Elf_Internal_Rela *rel; |
| 5445 | struct elf_link_hash_entry *h; |
| 5446 | Elf_Internal_Sym *sym; |
| 5447 | { |
| 5448 | if (h != NULL) |
| 5449 | { |
| 5450 | switch (ELF64_R_TYPE (rel->r_info)) |
| 5451 | { |
| 5452 | case R_MIPS_GNU_VTINHERIT: |
| 5453 | case R_MIPS_GNU_VTENTRY: |
| 5454 | break; |
| 5455 | |
| 5456 | default: |
| 5457 | switch (h->root.type) |
| 5458 | { |
| 5459 | case bfd_link_hash_defined: |
| 5460 | case bfd_link_hash_defweak: |
| 5461 | return h->root.u.def.section; |
| 5462 | |
| 5463 | case bfd_link_hash_common: |
| 5464 | return h->root.u.c.p->section; |
| 5465 | |
| 5466 | default: |
| 5467 | break; |
| 5468 | } |
| 5469 | } |
| 5470 | } |
| 5471 | else |
| 5472 | { |
| 5473 | return bfd_section_from_elf_index (abfd, sym->st_shndx); |
| 5474 | } |
| 5475 | |
| 5476 | return NULL; |
| 5477 | } |
| 5478 | |
| 5479 | /* Update the got entry reference counts for the section being removed. */ |
| 5480 | |
| 5481 | boolean |
| 5482 | mips_elf64_gc_sweep_hook (abfd, info, sec, relocs) |
| 5483 | bfd *abfd ATTRIBUTE_UNUSED; |
| 5484 | struct bfd_link_info *info ATTRIBUTE_UNUSED; |
| 5485 | asection *sec ATTRIBUTE_UNUSED; |
| 5486 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED; |
| 5487 | { |
| 5488 | #if 0 |
| 5489 | Elf_Internal_Shdr *symtab_hdr; |
| 5490 | struct elf_link_hash_entry **sym_hashes; |
| 5491 | bfd_signed_vma *local_got_refcounts; |
| 5492 | const Elf_Internal_Rela *rel, *relend; |
| 5493 | unsigned long r_symndx; |
| 5494 | struct elf_link_hash_entry *h; |
| 5495 | |
| 5496 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 5497 | sym_hashes = elf_sym_hashes (abfd); |
| 5498 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 5499 | |
| 5500 | relend = relocs + sec->reloc_count; |
| 5501 | for (rel = relocs; rel < relend; rel++) |
| 5502 | switch (ELF64_R_TYPE (rel->r_info)) |
| 5503 | { |
| 5504 | case R_MIPS_GOT16: |
| 5505 | case R_MIPS_CALL16: |
| 5506 | case R_MIPS_CALL_HI16: |
| 5507 | case R_MIPS_CALL_LO16: |
| 5508 | case R_MIPS_GOT_HI16: |
| 5509 | case R_MIPS_GOT_LO16: |
| 5510 | /* ??? It would seem that the existing MIPS code does no sort |
| 5511 | of reference counting or whatnot on its GOT and PLT entries, |
| 5512 | so it is not possible to garbage collect them at this time. */ |
| 5513 | break; |
| 5514 | |
| 5515 | default: |
| 5516 | break; |
| 5517 | } |
| 5518 | #endif |
| 5519 | |
| 5520 | return true; |
| 5521 | } |
| 5522 | \f |
| 5523 | /* Create the .got section to hold the global offset table. */ |
| 5524 | |
| 5525 | static boolean |
| 5526 | mips_elf64_create_got_section (abfd, info) |
| 5527 | bfd *abfd; |
| 5528 | struct bfd_link_info *info; |
| 5529 | { |
| 5530 | flagword flags; |
| 5531 | register asection *s; |
| 5532 | struct elf_link_hash_entry *h; |
| 5533 | struct mips_elf64_got_info *g; |
| 5534 | |
| 5535 | /* This function may be called more than once. */ |
| 5536 | if (bfd_get_section_by_name (abfd, ".got")) |
| 5537 | return true; |
| 5538 | |
| 5539 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 5540 | | SEC_LINKER_CREATED); |
| 5541 | |
| 5542 | s = bfd_make_section (abfd, ".got"); |
| 5543 | if (s == NULL |
| 5544 | || ! bfd_set_section_flags (abfd, s, flags) |
| 5545 | || ! bfd_set_section_alignment (abfd, s, 4)) |
| 5546 | return false; |
| 5547 | |
| 5548 | /* Define the symbol _GLOBAL_OFFSET_TABLE_. We don't do this in the |
| 5549 | linker script because we don't want to define the symbol if we |
| 5550 | are not creating a global offset table. */ |
| 5551 | h = NULL; |
| 5552 | if (! (_bfd_generic_link_add_one_symbol |
| 5553 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, s, |
| 5554 | (bfd_vma) 0, (const char *) NULL, false, |
| 5555 | get_elf_backend_data (abfd)->collect, |
| 5556 | (struct bfd_link_hash_entry **) &h))) |
| 5557 | return false; |
| 5558 | h->elf_link_hash_flags &=~ ELF_LINK_NON_ELF; |
| 5559 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 5560 | h->type = STT_OBJECT; |
| 5561 | |
| 5562 | if (info->shared |
| 5563 | && ! bfd_elf64_link_record_dynamic_symbol (info, h)) |
| 5564 | return false; |
| 5565 | |
| 5566 | /* The first several global offset table entries are reserved. */ |
| 5567 | s->_raw_size = MIPS_RESERVED_GOTNO * (get_elf_backend_data (abfd)->s->arch_size / 8); |
| 5568 | |
| 5569 | g = (struct mips_elf64_got_info *) bfd_alloc (abfd, |
| 5570 | sizeof (struct mips_elf64_got_info)); |
| 5571 | if (g == NULL) |
| 5572 | return false; |
| 5573 | g->global_gotsym = NULL; |
| 5574 | g->local_gotno = MIPS_RESERVED_GOTNO; |
| 5575 | g->assigned_gotno = MIPS_RESERVED_GOTNO; |
| 5576 | if (elf_section_data (s) == NULL) |
| 5577 | { |
| 5578 | s->used_by_bfd = |
| 5579 | (PTR) bfd_zalloc (abfd, sizeof (struct bfd_elf_section_data)); |
| 5580 | if (elf_section_data (s) == NULL) |
| 5581 | return false; |
| 5582 | } |
| 5583 | elf_section_data (s)->tdata = (PTR) g; |
| 5584 | elf_section_data (s)->this_hdr.sh_flags |
| 5585 | |= SHF_ALLOC | SHF_WRITE | SHF_MIPS_GPREL; |
| 5586 | |
| 5587 | return true; |
| 5588 | } |
| 5589 | |
| 5590 | /* If H is a symbol that needs a global GOT entry, but has a dynamic |
| 5591 | symbol table index lower than any we've seen to date, record it for |
| 5592 | posterity. */ |
| 5593 | |
| 5594 | static boolean |
| 5595 | mips_elf64_record_global_got_symbol (h, info, g) |
| 5596 | struct elf_link_hash_entry *h; |
| 5597 | struct bfd_link_info *info; |
| 5598 | struct mips_elf64_got_info *g ATTRIBUTE_UNUSED; |
| 5599 | { |
| 5600 | /* A global symbol in the GOT must also be in the dynamic symbol |
| 5601 | table. */ |
| 5602 | if (h->dynindx == -1 |
| 5603 | && !bfd_elf64_link_record_dynamic_symbol (info, h)) |
| 5604 | return false; |
| 5605 | |
| 5606 | /* If we've already marked this entry as needing GOT space, we don't |
| 5607 | need to do it again. */ |
| 5608 | if (h->got.offset != (bfd_vma) - 1) |
| 5609 | return true; |
| 5610 | |
| 5611 | /* By setting this to a value other than -1, we are indicating that |
| 5612 | there needs to be a GOT entry for H. Avoid using zero, as the |
| 5613 | generic ELF copy_indirect_symbol tests for <= 0. */ |
| 5614 | h->got.offset = 1; |
| 5615 | |
| 5616 | return true; |
| 5617 | } |
| 5618 | |
| 5619 | /* Returns the .msym section for ABFD, creating it if it does not |
| 5620 | already exist. Returns NULL to indicate error. */ |
| 5621 | |
| 5622 | static asection * |
| 5623 | mips_elf64_create_msym_section (abfd) |
| 5624 | bfd *abfd; |
| 5625 | { |
| 5626 | asection *s; |
| 5627 | |
| 5628 | s = bfd_get_section_by_name (abfd, ".msym"); |
| 5629 | if (!s) |
| 5630 | { |
| 5631 | s = bfd_make_section (abfd, ".msym"); |
| 5632 | if (!s |
| 5633 | || !bfd_set_section_flags (abfd, s, |
| 5634 | SEC_ALLOC |
| 5635 | | SEC_LOAD |
| 5636 | | SEC_HAS_CONTENTS |
| 5637 | | SEC_LINKER_CREATED |
| 5638 | | SEC_READONLY) |
| 5639 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 5640 | return NULL; |
| 5641 | } |
| 5642 | |
| 5643 | return s; |
| 5644 | } |
| 5645 | |
| 5646 | /* Add room for N relocations to the .rel.dyn section in ABFD. */ |
| 5647 | |
| 5648 | static void |
| 5649 | mips_elf64_allocate_dynamic_relocations (abfd, n) |
| 5650 | bfd *abfd; |
| 5651 | unsigned int n; |
| 5652 | { |
| 5653 | asection *s; |
| 5654 | |
| 5655 | s = bfd_get_section_by_name (abfd, ".rel.dyn"); |
| 5656 | BFD_ASSERT (s != NULL); |
| 5657 | |
| 5658 | if (s->_raw_size == 0) |
| 5659 | { |
| 5660 | /* Make room for a null element. */ |
| 5661 | s->_raw_size += get_elf_backend_data (abfd)->s->sizeof_rel; |
| 5662 | ++s->reloc_count; |
| 5663 | } |
| 5664 | s->_raw_size += n * get_elf_backend_data (abfd)->s->sizeof_rel; |
| 5665 | } |
| 5666 | |
| 5667 | /* Look through the relocs for a section during the first phase, and |
| 5668 | allocate space in the global offset table. */ |
| 5669 | |
| 5670 | boolean |
| 5671 | mips_elf64_check_relocs (abfd, info, sec, relocs) |
| 5672 | bfd *abfd; |
| 5673 | struct bfd_link_info *info; |
| 5674 | asection *sec; |
| 5675 | const Elf_Internal_Rela *relocs; |
| 5676 | { |
| 5677 | const char *name; |
| 5678 | bfd *dynobj; |
| 5679 | Elf_Internal_Shdr *symtab_hdr; |
| 5680 | struct elf_link_hash_entry **sym_hashes; |
| 5681 | struct mips_elf64_got_info *g; |
| 5682 | size_t extsymoff; |
| 5683 | const Elf_Internal_Rela *rel; |
| 5684 | const Elf_Internal_Rela *rel_end; |
| 5685 | asection *sgot; |
| 5686 | asection *sreloc; |
| 5687 | struct elf_backend_data *bed; |
| 5688 | |
| 5689 | if (info->relocateable) |
| 5690 | return true; |
| 5691 | |
| 5692 | dynobj = elf_hash_table (info)->dynobj; |
| 5693 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 5694 | sym_hashes = elf_sym_hashes (abfd); |
| 5695 | extsymoff = (elf_bad_symtab (abfd)) ? 0 : symtab_hdr->sh_info; |
| 5696 | |
| 5697 | /* Check for the mips16 stub sections. */ |
| 5698 | |
| 5699 | name = bfd_get_section_name (abfd, sec); |
| 5700 | if (strncmp (name, FN_STUB, sizeof FN_STUB - 1) == 0) |
| 5701 | { |
| 5702 | unsigned long r_symndx; |
| 5703 | |
| 5704 | /* Look at the relocation information to figure out which symbol |
| 5705 | this is for. */ |
| 5706 | |
| 5707 | r_symndx = ELF64_R_SYM (relocs->r_info); |
| 5708 | |
| 5709 | if (r_symndx < extsymoff |
| 5710 | || sym_hashes[r_symndx - extsymoff] == NULL) |
| 5711 | { |
| 5712 | asection *o; |
| 5713 | |
| 5714 | /* This stub is for a local symbol. This stub will only be |
| 5715 | needed if there is some relocation in this BFD, other |
| 5716 | than a 16 bit function call, which refers to this symbol. */ |
| 5717 | for (o = abfd->sections; o != NULL; o = o->next) |
| 5718 | { |
| 5719 | Elf_Internal_Rela *sec_relocs; |
| 5720 | const Elf_Internal_Rela *r, *rend; |
| 5721 | |
| 5722 | /* We can ignore stub sections when looking for relocs. */ |
| 5723 | if ((o->flags & SEC_RELOC) == 0 |
| 5724 | || o->reloc_count == 0 |
| 5725 | || strncmp (bfd_get_section_name (abfd, o), FN_STUB, |
| 5726 | sizeof FN_STUB - 1) == 0 |
| 5727 | || strncmp (bfd_get_section_name (abfd, o), CALL_STUB, |
| 5728 | sizeof CALL_STUB - 1) == 0 |
| 5729 | || strncmp (bfd_get_section_name (abfd, o), CALL_FP_STUB, |
| 5730 | sizeof CALL_FP_STUB - 1) == 0) |
| 5731 | continue; |
| 5732 | |
| 5733 | sec_relocs = (_bfd_elf64_link_read_relocs |
| 5734 | (abfd, o, (PTR) NULL, |
| 5735 | (Elf_Internal_Rela *) NULL, |
| 5736 | info->keep_memory)); |
| 5737 | if (sec_relocs == NULL) |
| 5738 | return false; |
| 5739 | |
| 5740 | rend = sec_relocs + o->reloc_count; |
| 5741 | for (r = sec_relocs; r < rend; r++) |
| 5742 | if (ELF64_R_SYM (r->r_info) == r_symndx |
| 5743 | && ELF64_R_TYPE (r->r_info) != R_MIPS16_26) |
| 5744 | break; |
| 5745 | |
| 5746 | if (! info->keep_memory) |
| 5747 | free (sec_relocs); |
| 5748 | |
| 5749 | if (r < rend) |
| 5750 | break; |
| 5751 | } |
| 5752 | |
| 5753 | if (o == NULL) |
| 5754 | { |
| 5755 | /* There is no non-call reloc for this stub, so we do |
| 5756 | not need it. Since this function is called before |
| 5757 | the linker maps input sections to output sections, we |
| 5758 | can easily discard it by setting the SEC_EXCLUDE |
| 5759 | flag. */ |
| 5760 | sec->flags |= SEC_EXCLUDE; |
| 5761 | return true; |
| 5762 | } |
| 5763 | |
| 5764 | /* Record this stub in an array of local symbol stubs for |
| 5765 | this BFD. */ |
| 5766 | if (elf_tdata (abfd)->local_stubs == NULL) |
| 5767 | { |
| 5768 | unsigned long symcount; |
| 5769 | asection **n; |
| 5770 | bfd_size_type amt; |
| 5771 | |
| 5772 | if (elf_bad_symtab (abfd)) |
| 5773 | symcount = NUM_SHDR_ENTRIES (symtab_hdr); |
| 5774 | else |
| 5775 | symcount = symtab_hdr->sh_info; |
| 5776 | amt = symcount * sizeof (asection *); |
| 5777 | n = (asection **) bfd_zalloc (abfd, amt); |
| 5778 | if (n == NULL) |
| 5779 | return false; |
| 5780 | elf_tdata (abfd)->local_stubs = n; |
| 5781 | } |
| 5782 | |
| 5783 | elf_tdata (abfd)->local_stubs[r_symndx] = sec; |
| 5784 | |
| 5785 | /* We don't need to set mips16_stubs_seen in this case. |
| 5786 | That flag is used to see whether we need to look through |
| 5787 | the global symbol table for stubs. We don't need to set |
| 5788 | it here, because we just have a local stub. */ |
| 5789 | } |
| 5790 | else |
| 5791 | { |
| 5792 | struct mips_elf64_link_hash_entry *h; |
| 5793 | |
| 5794 | h = ((struct mips_elf64_link_hash_entry *) |
| 5795 | sym_hashes[r_symndx - extsymoff]); |
| 5796 | |
| 5797 | /* H is the symbol this stub is for. */ |
| 5798 | |
| 5799 | h->fn_stub = sec; |
| 5800 | mips_elf64_hash_table (info)->mips16_stubs_seen = true; |
| 5801 | } |
| 5802 | } |
| 5803 | else if (strncmp (name, CALL_STUB, sizeof CALL_STUB - 1) == 0 |
| 5804 | || strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) |
| 5805 | { |
| 5806 | unsigned long r_symndx; |
| 5807 | struct mips_elf64_link_hash_entry *h; |
| 5808 | asection **loc; |
| 5809 | |
| 5810 | /* Look at the relocation information to figure out which symbol |
| 5811 | this is for. */ |
| 5812 | |
| 5813 | r_symndx = ELF64_R_SYM (relocs->r_info); |
| 5814 | |
| 5815 | if (r_symndx < extsymoff |
| 5816 | || sym_hashes[r_symndx - extsymoff] == NULL) |
| 5817 | { |
| 5818 | /* This stub was actually built for a static symbol defined |
| 5819 | in the same file. We assume that all static symbols in |
| 5820 | mips16 code are themselves mips16, so we can simply |
| 5821 | discard this stub. Since this function is called before |
| 5822 | the linker maps input sections to output sections, we can |
| 5823 | easily discard it by setting the SEC_EXCLUDE flag. */ |
| 5824 | sec->flags |= SEC_EXCLUDE; |
| 5825 | return true; |
| 5826 | } |
| 5827 | |
| 5828 | h = ((struct mips_elf64_link_hash_entry *) |
| 5829 | sym_hashes[r_symndx - extsymoff]); |
| 5830 | |
| 5831 | /* H is the symbol this stub is for. */ |
| 5832 | |
| 5833 | if (strncmp (name, CALL_FP_STUB, sizeof CALL_FP_STUB - 1) == 0) |
| 5834 | loc = &h->call_fp_stub; |
| 5835 | else |
| 5836 | loc = &h->call_stub; |
| 5837 | |
| 5838 | /* If we already have an appropriate stub for this function, we |
| 5839 | don't need another one, so we can discard this one. Since |
| 5840 | this function is called before the linker maps input sections |
| 5841 | to output sections, we can easily discard it by setting the |
| 5842 | SEC_EXCLUDE flag. We can also discard this section if we |
| 5843 | happen to already know that this is a mips16 function; it is |
| 5844 | not necessary to check this here, as it is checked later, but |
| 5845 | it is slightly faster to check now. */ |
| 5846 | if (*loc != NULL || h->root.other == STO_MIPS16) |
| 5847 | { |
| 5848 | sec->flags |= SEC_EXCLUDE; |
| 5849 | return true; |
| 5850 | } |
| 5851 | |
| 5852 | *loc = sec; |
| 5853 | mips_elf64_hash_table (info)->mips16_stubs_seen = true; |
| 5854 | } |
| 5855 | |
| 5856 | if (dynobj == NULL) |
| 5857 | { |
| 5858 | sgot = NULL; |
| 5859 | g = NULL; |
| 5860 | } |
| 5861 | else |
| 5862 | { |
| 5863 | sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 5864 | if (sgot == NULL) |
| 5865 | g = NULL; |
| 5866 | else |
| 5867 | { |
| 5868 | BFD_ASSERT (elf_section_data (sgot) != NULL); |
| 5869 | g = (struct mips_elf64_got_info *) elf_section_data (sgot)->tdata; |
| 5870 | BFD_ASSERT (g != NULL); |
| 5871 | } |
| 5872 | } |
| 5873 | |
| 5874 | sreloc = NULL; |
| 5875 | bed = get_elf_backend_data (abfd); |
| 5876 | rel_end = relocs + sec->reloc_count * bed->s->int_rels_per_ext_rel; |
| 5877 | for (rel = relocs; rel < rel_end; ++rel) |
| 5878 | { |
| 5879 | unsigned long r_symndx; |
| 5880 | int r_type; |
| 5881 | struct elf_link_hash_entry *h; |
| 5882 | |
| 5883 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 5884 | r_type = ELF64_MIPS_R_TYPE (rel->r_info); |
| 5885 | |
| 5886 | if (r_symndx < extsymoff) |
| 5887 | h = NULL; |
| 5888 | else if (r_symndx >= extsymoff + NUM_SHDR_ENTRIES (symtab_hdr)) |
| 5889 | { |
| 5890 | (*_bfd_error_handler) |
| 5891 | (_("%s: Malformed reloc detected for section %s"), |
| 5892 | bfd_archive_filename (abfd), name); |
| 5893 | bfd_set_error (bfd_error_bad_value); |
| 5894 | return false; |
| 5895 | } |
| 5896 | else |
| 5897 | { |
| 5898 | h = sym_hashes[r_symndx - extsymoff]; |
| 5899 | |
| 5900 | /* This may be an indirect symbol created because of a version. */ |
| 5901 | if (h != NULL) |
| 5902 | { |
| 5903 | while (h->root.type == bfd_link_hash_indirect) |
| 5904 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 5905 | } |
| 5906 | } |
| 5907 | |
| 5908 | /* Some relocs require a global offset table. */ |
| 5909 | if (dynobj == NULL || sgot == NULL) |
| 5910 | { |
| 5911 | switch (r_type) |
| 5912 | { |
| 5913 | case R_MIPS_GOT16: |
| 5914 | case R_MIPS_CALL16: |
| 5915 | case R_MIPS_CALL_HI16: |
| 5916 | case R_MIPS_CALL_LO16: |
| 5917 | case R_MIPS_GOT_HI16: |
| 5918 | case R_MIPS_GOT_LO16: |
| 5919 | case R_MIPS_GOT_PAGE: |
| 5920 | case R_MIPS_GOT_OFST: |
| 5921 | case R_MIPS_GOT_DISP: |
| 5922 | if (dynobj == NULL) |
| 5923 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 5924 | if (! mips_elf64_create_got_section (dynobj, info)) |
| 5925 | return false; |
| 5926 | g = _mips_elf64_got_info (dynobj, &sgot); |
| 5927 | break; |
| 5928 | |
| 5929 | case R_MIPS_32: |
| 5930 | case R_MIPS_REL32: |
| 5931 | case R_MIPS_64: |
| 5932 | if (dynobj == NULL |
| 5933 | && (info->shared || h != NULL) |
| 5934 | && (sec->flags & SEC_ALLOC) != 0) |
| 5935 | elf_hash_table (info)->dynobj = dynobj = abfd; |
| 5936 | break; |
| 5937 | |
| 5938 | default: |
| 5939 | break; |
| 5940 | } |
| 5941 | } |
| 5942 | |
| 5943 | if (!h && (r_type == R_MIPS_CALL_LO16 |
| 5944 | || r_type == R_MIPS_GOT_LO16 |
| 5945 | || r_type == R_MIPS_GOT_DISP)) |
| 5946 | { |
| 5947 | /* We may need a local GOT entry for this relocation. We |
| 5948 | don't count R_MIPS_GOT_PAGE because we can estimate the |
| 5949 | maximum number of pages needed by looking at the size of |
| 5950 | the segment. Similar comments apply to R_MIPS_GOT16 and |
| 5951 | R_MIPS_CALL16. We don't count R_MIPS_GOT_HI16, or |
| 5952 | R_MIPS_CALL_HI16 because these are always followed by an |
| 5953 | R_MIPS_GOT_LO16 or R_MIPS_CALL_LO16. |
| 5954 | |
| 5955 | This estimation is very conservative since we can merge |
| 5956 | duplicate entries in the GOT. In order to be less |
| 5957 | conservative, we could actually build the GOT here, |
| 5958 | rather than in relocate_section. */ |
| 5959 | g->local_gotno++; |
| 5960 | sgot->_raw_size += get_elf_backend_data (dynobj)->s->arch_size / 8; |
| 5961 | } |
| 5962 | |
| 5963 | switch (r_type) |
| 5964 | { |
| 5965 | case R_MIPS_CALL16: |
| 5966 | if (h == NULL) |
| 5967 | { |
| 5968 | (*_bfd_error_handler) |
| 5969 | (_("%s: CALL16 reloc at 0x%lx not against global symbol"), |
| 5970 | bfd_archive_filename (abfd), (unsigned long) rel->r_offset); |
| 5971 | bfd_set_error (bfd_error_bad_value); |
| 5972 | return false; |
| 5973 | } |
| 5974 | /* Fall through. */ |
| 5975 | |
| 5976 | case R_MIPS_CALL_HI16: |
| 5977 | case R_MIPS_CALL_LO16: |
| 5978 | if (h != NULL) |
| 5979 | { |
| 5980 | /* This symbol requires a global offset table entry. */ |
| 5981 | if (!mips_elf64_record_global_got_symbol (h, info, g)) |
| 5982 | return false; |
| 5983 | |
| 5984 | /* We need a stub, not a plt entry for the undefined |
| 5985 | function. But we record it as if it needs plt. See |
| 5986 | elf_adjust_dynamic_symbol in elflink.h. */ |
| 5987 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| 5988 | h->type = STT_FUNC; |
| 5989 | } |
| 5990 | break; |
| 5991 | |
| 5992 | case R_MIPS_GOT16: |
| 5993 | case R_MIPS_GOT_HI16: |
| 5994 | case R_MIPS_GOT_LO16: |
| 5995 | case R_MIPS_GOT_DISP: |
| 5996 | /* This symbol requires a global offset table entry. */ |
| 5997 | if (h && !mips_elf64_record_global_got_symbol (h, info, g)) |
| 5998 | return false; |
| 5999 | break; |
| 6000 | |
| 6001 | case R_MIPS_32: |
| 6002 | case R_MIPS_REL32: |
| 6003 | case R_MIPS_64: |
| 6004 | if ((info->shared || h != NULL) |
| 6005 | && (sec->flags & SEC_ALLOC) != 0) |
| 6006 | { |
| 6007 | if (sreloc == NULL) |
| 6008 | { |
| 6009 | const char *name = ".rel.dyn"; |
| 6010 | |
| 6011 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 6012 | if (sreloc == NULL) |
| 6013 | { |
| 6014 | sreloc = bfd_make_section (dynobj, name); |
| 6015 | if (sreloc == NULL |
| 6016 | || ! bfd_set_section_flags (dynobj, sreloc, |
| 6017 | (SEC_ALLOC |
| 6018 | | SEC_LOAD |
| 6019 | | SEC_HAS_CONTENTS |
| 6020 | | SEC_IN_MEMORY |
| 6021 | | SEC_LINKER_CREATED |
| 6022 | | SEC_READONLY)) |
| 6023 | || ! bfd_set_section_alignment (dynobj, sreloc, |
| 6024 | 4)) |
| 6025 | return false; |
| 6026 | } |
| 6027 | } |
| 6028 | #define MIPS_READONLY_SECTION (SEC_ALLOC | SEC_LOAD | SEC_READONLY) |
| 6029 | if (info->shared) |
| 6030 | { |
| 6031 | /* When creating a shared object, we must copy these |
| 6032 | reloc types into the output file as R_MIPS_REL32 |
| 6033 | relocs. We make room for this reloc in the |
| 6034 | .rel.dyn reloc section. */ |
| 6035 | mips_elf64_allocate_dynamic_relocations (dynobj, 1); |
| 6036 | if ((sec->flags & MIPS_READONLY_SECTION) |
| 6037 | == MIPS_READONLY_SECTION) |
| 6038 | /* We tell the dynamic linker that there are |
| 6039 | relocations against the text segment. */ |
| 6040 | info->flags |= DF_TEXTREL; |
| 6041 | } |
| 6042 | else |
| 6043 | { |
| 6044 | struct mips_elf64_link_hash_entry *hmips; |
| 6045 | |
| 6046 | /* We only need to copy this reloc if the symbol is |
| 6047 | defined in a dynamic object. */ |
| 6048 | hmips = (struct mips_elf64_link_hash_entry *) h; |
| 6049 | ++hmips->possibly_dynamic_relocs; |
| 6050 | if ((sec->flags & MIPS_READONLY_SECTION) |
| 6051 | == MIPS_READONLY_SECTION) |
| 6052 | /* We need it to tell the dynamic linker if there |
| 6053 | are relocations against the text segment. */ |
| 6054 | hmips->readonly_reloc = true; |
| 6055 | } |
| 6056 | |
| 6057 | /* Even though we don't directly need a GOT entry for |
| 6058 | this symbol, a symbol must have a dynamic symbol |
| 6059 | table index greater that DT_MIPS_GOTSYM if there are |
| 6060 | dynamic relocations against it. */ |
| 6061 | if (h != NULL |
| 6062 | && !mips_elf64_record_global_got_symbol (h, info, g)) |
| 6063 | return false; |
| 6064 | } |
| 6065 | break; |
| 6066 | |
| 6067 | case R_MIPS_26: |
| 6068 | case R_MIPS_GPREL16: |
| 6069 | case R_MIPS_LITERAL: |
| 6070 | case R_MIPS_GPREL32: |
| 6071 | break; |
| 6072 | |
| 6073 | /* This relocation describes the C++ object vtable hierarchy. |
| 6074 | Reconstruct it for later use during GC. */ |
| 6075 | case R_MIPS_GNU_VTINHERIT: |
| 6076 | if (!_bfd_elf64_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 6077 | return false; |
| 6078 | break; |
| 6079 | |
| 6080 | /* This relocation describes which C++ vtable entries are actually |
| 6081 | used. Record for later use during GC. */ |
| 6082 | case R_MIPS_GNU_VTENTRY: |
| 6083 | if (!_bfd_elf64_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
| 6084 | return false; |
| 6085 | break; |
| 6086 | |
| 6087 | default: |
| 6088 | break; |
| 6089 | } |
| 6090 | } |
| 6091 | |
| 6092 | return true; |
| 6093 | } |
| 6094 | |
| 6095 | /* Structure used to pass information to mips_elf64_output_extsym. */ |
| 6096 | |
| 6097 | struct extsym_info |
| 6098 | { |
| 6099 | bfd *abfd; |
| 6100 | struct bfd_link_info *info; |
| 6101 | struct ecoff_debug_info *debug; |
| 6102 | const struct ecoff_debug_swap *swap; |
| 6103 | boolean failed; |
| 6104 | }; |
| 6105 | |
| 6106 | /* This routine is used to write out ECOFF debugging external symbol |
| 6107 | information. It is called via mips_elf64_link_hash_traverse. The |
| 6108 | ECOFF external symbol information must match the ELF external |
| 6109 | symbol information. Unfortunately, at this point we don't know |
| 6110 | whether a symbol is required by reloc information, so the two |
| 6111 | tables may wind up being different. We must sort out the external |
| 6112 | symbol information before we can set the final size of the .mdebug |
| 6113 | section, and we must set the size of the .mdebug section before we |
| 6114 | can relocate any sections, and we can't know which symbols are |
| 6115 | required by relocation until we relocate the sections. |
| 6116 | Fortunately, it is relatively unlikely that any symbol will be |
| 6117 | stripped but required by a reloc. In particular, it can not happen |
| 6118 | when generating a final executable. */ |
| 6119 | |
| 6120 | static boolean |
| 6121 | mips_elf64_output_extsym (h, data) |
| 6122 | struct mips_elf64_link_hash_entry *h; |
| 6123 | PTR data; |
| 6124 | { |
| 6125 | struct extsym_info *einfo = (struct extsym_info *) data; |
| 6126 | boolean strip; |
| 6127 | asection *sec, *output_section; |
| 6128 | |
| 6129 | if (h->root.indx == -2) |
| 6130 | strip = false; |
| 6131 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 6132 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) |
| 6133 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 |
| 6134 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) |
| 6135 | strip = true; |
| 6136 | else if (einfo->info->strip == strip_all |
| 6137 | || (einfo->info->strip == strip_some |
| 6138 | && bfd_hash_lookup (einfo->info->keep_hash, |
| 6139 | h->root.root.root.string, |
| 6140 | false, false) == NULL)) |
| 6141 | strip = true; |
| 6142 | else |
| 6143 | strip = false; |
| 6144 | |
| 6145 | if (strip) |
| 6146 | return true; |
| 6147 | |
| 6148 | if (h->esym.ifd == -2) |
| 6149 | { |
| 6150 | h->esym.jmptbl = 0; |
| 6151 | h->esym.cobol_main = 0; |
| 6152 | h->esym.weakext = 0; |
| 6153 | h->esym.reserved = 0; |
| 6154 | h->esym.ifd = ifdNil; |
| 6155 | h->esym.asym.value = 0; |
| 6156 | h->esym.asym.st = stGlobal; |
| 6157 | |
| 6158 | if (h->root.root.type == bfd_link_hash_undefined |
| 6159 | || h->root.root.type == bfd_link_hash_undefweak) |
| 6160 | { |
| 6161 | const char *name; |
| 6162 | |
| 6163 | /* Use undefined class. Also, set class and type for some |
| 6164 | special symbols. */ |
| 6165 | name = h->root.root.root.string; |
| 6166 | h->esym.asym.sc = scUndefined; |
| 6167 | } |
| 6168 | else if (h->root.root.type != bfd_link_hash_defined |
| 6169 | && h->root.root.type != bfd_link_hash_defweak) |
| 6170 | h->esym.asym.sc = scAbs; |
| 6171 | else |
| 6172 | { |
| 6173 | const char *name; |
| 6174 | |
| 6175 | sec = h->root.root.u.def.section; |
| 6176 | output_section = sec->output_section; |
| 6177 | |
| 6178 | /* When making a shared library and symbol h is the one from |
| 6179 | the another shared library, OUTPUT_SECTION may be null. */ |
| 6180 | if (output_section == NULL) |
| 6181 | h->esym.asym.sc = scUndefined; |
| 6182 | else |
| 6183 | { |
| 6184 | name = bfd_section_name (output_section->owner, output_section); |
| 6185 | |
| 6186 | if (strcmp (name, ".text") == 0) |
| 6187 | h->esym.asym.sc = scText; |
| 6188 | else if (strcmp (name, ".data") == 0) |
| 6189 | h->esym.asym.sc = scData; |
| 6190 | else if (strcmp (name, ".sdata") == 0) |
| 6191 | h->esym.asym.sc = scSData; |
| 6192 | else if (strcmp (name, ".rodata") == 0 |
| 6193 | || strcmp (name, ".rdata") == 0) |
| 6194 | h->esym.asym.sc = scRData; |
| 6195 | else if (strcmp (name, ".bss") == 0) |
| 6196 | h->esym.asym.sc = scBss; |
| 6197 | else if (strcmp (name, ".sbss") == 0) |
| 6198 | h->esym.asym.sc = scSBss; |
| 6199 | else if (strcmp (name, ".init") == 0) |
| 6200 | h->esym.asym.sc = scInit; |
| 6201 | else if (strcmp (name, ".fini") == 0) |
| 6202 | h->esym.asym.sc = scFini; |
| 6203 | else |
| 6204 | h->esym.asym.sc = scAbs; |
| 6205 | } |
| 6206 | } |
| 6207 | |
| 6208 | h->esym.asym.reserved = 0; |
| 6209 | h->esym.asym.index = indexNil; |
| 6210 | } |
| 6211 | |
| 6212 | if (h->root.root.type == bfd_link_hash_common) |
| 6213 | h->esym.asym.value = h->root.root.u.c.size; |
| 6214 | else if (h->root.root.type == bfd_link_hash_defined |
| 6215 | || h->root.root.type == bfd_link_hash_defweak) |
| 6216 | { |
| 6217 | if (h->esym.asym.sc == scCommon) |
| 6218 | h->esym.asym.sc = scBss; |
| 6219 | else if (h->esym.asym.sc == scSCommon) |
| 6220 | h->esym.asym.sc = scSBss; |
| 6221 | |
| 6222 | sec = h->root.root.u.def.section; |
| 6223 | output_section = sec->output_section; |
| 6224 | if (output_section != NULL) |
| 6225 | h->esym.asym.value = (h->root.root.u.def.value |
| 6226 | + sec->output_offset |
| 6227 | + output_section->vma); |
| 6228 | else |
| 6229 | h->esym.asym.value = 0; |
| 6230 | } |
| 6231 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) |
| 6232 | { |
| 6233 | struct mips_elf64_link_hash_entry *hd = h; |
| 6234 | boolean no_fn_stub = h->no_fn_stub; |
| 6235 | |
| 6236 | while (hd->root.root.type == bfd_link_hash_indirect) |
| 6237 | { |
| 6238 | hd = (struct mips_elf64_link_hash_entry *)h->root.root.u.i.link; |
| 6239 | no_fn_stub = no_fn_stub || hd->no_fn_stub; |
| 6240 | } |
| 6241 | |
| 6242 | if (!no_fn_stub) |
| 6243 | { |
| 6244 | /* Set type and value for a symbol with a function stub. */ |
| 6245 | h->esym.asym.st = stProc; |
| 6246 | sec = hd->root.root.u.def.section; |
| 6247 | if (sec == NULL) |
| 6248 | h->esym.asym.value = 0; |
| 6249 | else |
| 6250 | { |
| 6251 | output_section = sec->output_section; |
| 6252 | if (output_section != NULL) |
| 6253 | h->esym.asym.value = (hd->root.plt.offset |
| 6254 | + sec->output_offset |
| 6255 | + output_section->vma); |
| 6256 | else |
| 6257 | h->esym.asym.value = 0; |
| 6258 | } |
| 6259 | #if 0 /* FIXME? */ |
| 6260 | h->esym.ifd = 0; |
| 6261 | #endif |
| 6262 | } |
| 6263 | } |
| 6264 | |
| 6265 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
| 6266 | h->root.root.root.string, |
| 6267 | &h->esym)) |
| 6268 | { |
| 6269 | einfo->failed = true; |
| 6270 | return false; |
| 6271 | } |
| 6272 | |
| 6273 | return true; |
| 6274 | } |
| 6275 | |
| 6276 | /* Swap an entry in a .gptab section. Note that these routines rely |
| 6277 | on the equivalence of the two elements of the union. */ |
| 6278 | |
| 6279 | static void |
| 6280 | mips_elf64_swap_gptab_in (abfd, ex, in) |
| 6281 | bfd *abfd; |
| 6282 | const Elf32_External_gptab *ex; |
| 6283 | Elf32_gptab *in; |
| 6284 | { |
| 6285 | in->gt_entry.gt_g_value = H_GET_32 (abfd, ex->gt_entry.gt_g_value); |
| 6286 | in->gt_entry.gt_bytes = H_GET_32 (abfd, ex->gt_entry.gt_bytes); |
| 6287 | } |
| 6288 | |
| 6289 | static void |
| 6290 | mips_elf64_swap_gptab_out (abfd, in, ex) |
| 6291 | bfd *abfd; |
| 6292 | const Elf32_gptab *in; |
| 6293 | Elf32_External_gptab *ex; |
| 6294 | { |
| 6295 | H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_g_value, |
| 6296 | ex->gt_entry.gt_g_value); |
| 6297 | H_PUT_32 (abfd, (bfd_vma) in->gt_entry.gt_bytes, |
| 6298 | ex->gt_entry.gt_bytes); |
| 6299 | } |
| 6300 | |
| 6301 | /* A comparison routine used to sort .gptab entries. */ |
| 6302 | |
| 6303 | static int |
| 6304 | gptab_compare (p1, p2) |
| 6305 | const PTR p1; |
| 6306 | const PTR p2; |
| 6307 | { |
| 6308 | const Elf32_gptab *a1 = (const Elf32_gptab *) p1; |
| 6309 | const Elf32_gptab *a2 = (const Elf32_gptab *) p2; |
| 6310 | |
| 6311 | return a1->gt_entry.gt_g_value - a2->gt_entry.gt_g_value; |
| 6312 | } |
| 6313 | |
| 6314 | /* We need to use a special link routine to handle the .mdebug section. |
| 6315 | We need to merge all instances of this section together, not write |
| 6316 | them all out sequentially. */ |
| 6317 | |
| 6318 | boolean |
| 6319 | mips_elf64_final_link (abfd, info) |
| 6320 | bfd *abfd; |
| 6321 | struct bfd_link_info *info; |
| 6322 | { |
| 6323 | asection **secpp; |
| 6324 | asection *o; |
| 6325 | struct bfd_link_order *p; |
| 6326 | asection *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; |
| 6327 | struct ecoff_debug_info debug; |
| 6328 | const struct ecoff_debug_swap *swap |
| 6329 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| 6330 | HDRR *symhdr = &debug.symbolic_header; |
| 6331 | PTR mdebug_handle = NULL; |
| 6332 | asection *s; |
| 6333 | EXTR esym; |
| 6334 | unsigned int i; |
| 6335 | static const char * const secname[] = |
| 6336 | { ".text", ".init", ".fini", ".data", |
| 6337 | ".rodata", ".sdata", ".sbss", ".bss" }; |
| 6338 | static const int sc[] = { scText, scInit, scFini, scData, |
| 6339 | scRData, scSData, scSBss, scBss }; |
| 6340 | |
| 6341 | /* If all the things we linked together were PIC, but we're |
| 6342 | producing an executable (rather than a shared object), then the |
| 6343 | resulting file is CPIC (i.e., it calls PIC code.) */ |
| 6344 | if (!info->shared |
| 6345 | && !info->relocateable |
| 6346 | && elf_elfheader (abfd)->e_flags & EF_MIPS_PIC) |
| 6347 | { |
| 6348 | elf_elfheader (abfd)->e_flags &= ~EF_MIPS_PIC; |
| 6349 | elf_elfheader (abfd)->e_flags |= EF_MIPS_CPIC; |
| 6350 | } |
| 6351 | |
| 6352 | /* We'd carefully arranged the dynamic symbol indices, and then the |
| 6353 | generic size_dynamic_sections renumbered them out from under us. |
| 6354 | Rather than trying somehow to prevent the renumbering, just do |
| 6355 | the sort again. */ |
| 6356 | if (elf_hash_table (info)->dynamic_sections_created) |
| 6357 | { |
| 6358 | bfd *dynobj; |
| 6359 | asection *got; |
| 6360 | struct mips_elf64_got_info *g; |
| 6361 | |
| 6362 | /* When we resort, we must tell mips_elf64_sort_hash_table what |
| 6363 | the lowest index it may use is. That's the number of section |
| 6364 | symbols we're going to add. The generic ELF linker only |
| 6365 | adds these symbols when building a shared object. Note that |
| 6366 | we count the sections after (possibly) removing the .options |
| 6367 | section above. */ |
| 6368 | if (!mips_elf64_sort_hash_table (info, (info->shared |
| 6369 | ? bfd_count_sections (abfd) + 1 |
| 6370 | : 1))) |
| 6371 | return false; |
| 6372 | |
| 6373 | /* Make sure we didn't grow the global .got region. */ |
| 6374 | dynobj = elf_hash_table (info)->dynobj; |
| 6375 | got = bfd_get_section_by_name (dynobj, ".got"); |
| 6376 | g = (struct mips_elf64_got_info *) elf_section_data (got)->tdata; |
| 6377 | |
| 6378 | if (g->global_gotsym != NULL) |
| 6379 | BFD_ASSERT ((elf_hash_table (info)->dynsymcount |
| 6380 | - g->global_gotsym->dynindx) |
| 6381 | <= g->global_gotno); |
| 6382 | } |
| 6383 | |
| 6384 | /* We include .MIPS.options, even though we don't process it quite right. |
| 6385 | (Some entries are supposed to be merged.) At IRIX6 empirically we seem |
| 6386 | to be better off including it than not. */ |
| 6387 | for (secpp = &abfd->sections; *secpp != NULL; secpp = &(*secpp)->next) |
| 6388 | { |
| 6389 | if (strcmp ((*secpp)->name, ".MIPS.options") == 0) |
| 6390 | { |
| 6391 | for (p = (*secpp)->link_order_head; p != NULL; p = p->next) |
| 6392 | if (p->type == bfd_indirect_link_order) |
| 6393 | p->u.indirect.section->flags &=~ SEC_HAS_CONTENTS; |
| 6394 | (*secpp)->link_order_head = NULL; |
| 6395 | bfd_section_list_remove (abfd, secpp); |
| 6396 | --abfd->section_count; |
| 6397 | |
| 6398 | break; |
| 6399 | } |
| 6400 | } |
| 6401 | |
| 6402 | /* Get a value for the GP register. */ |
| 6403 | if (elf_gp (abfd) == 0) |
| 6404 | { |
| 6405 | struct bfd_link_hash_entry *h; |
| 6406 | |
| 6407 | h = bfd_link_hash_lookup (info->hash, "_gp", false, false, true); |
| 6408 | if (h != (struct bfd_link_hash_entry *) NULL |
| 6409 | && h->type == bfd_link_hash_defined) |
| 6410 | elf_gp (abfd) = (h->u.def.value |
| 6411 | + h->u.def.section->output_section->vma |
| 6412 | + h->u.def.section->output_offset); |
| 6413 | else if (info->relocateable) |
| 6414 | { |
| 6415 | bfd_vma lo = MINUS_ONE; |
| 6416 | |
| 6417 | /* Find the GP-relative section with the lowest offset. */ |
| 6418 | for (o = abfd->sections; o != NULL; o = o->next) |
| 6419 | if (o->vma < lo |
| 6420 | && (elf_section_data (o)->this_hdr.sh_flags & SHF_MIPS_GPREL)) |
| 6421 | lo = o->vma; |
| 6422 | |
| 6423 | /* And calculate GP relative to that. */ |
| 6424 | elf_gp (abfd) = (lo + 0x7ff0); |
| 6425 | } |
| 6426 | else |
| 6427 | { |
| 6428 | /* If the relocate_section function needs to do a reloc |
| 6429 | involving the GP value, it should make a reloc_dangerous |
| 6430 | callback to warn that GP is not defined. */ |
| 6431 | } |
| 6432 | } |
| 6433 | |
| 6434 | /* Go through the sections and collect the .mdebug information. */ |
| 6435 | mdebug_sec = NULL; |
| 6436 | gptab_data_sec = NULL; |
| 6437 | gptab_bss_sec = NULL; |
| 6438 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
| 6439 | { |
| 6440 | if (strcmp (o->name, ".mdebug") == 0) |
| 6441 | { |
| 6442 | struct extsym_info einfo; |
| 6443 | bfd_vma last; |
| 6444 | |
| 6445 | /* We have found the .mdebug section in the output file. |
| 6446 | Look through all the link_orders comprising it and merge |
| 6447 | the information together. */ |
| 6448 | symhdr->magic = swap->sym_magic; |
| 6449 | /* FIXME: What should the version stamp be? */ |
| 6450 | symhdr->vstamp = 0; |
| 6451 | symhdr->ilineMax = 0; |
| 6452 | symhdr->cbLine = 0; |
| 6453 | symhdr->idnMax = 0; |
| 6454 | symhdr->ipdMax = 0; |
| 6455 | symhdr->isymMax = 0; |
| 6456 | symhdr->ioptMax = 0; |
| 6457 | symhdr->iauxMax = 0; |
| 6458 | symhdr->issMax = 0; |
| 6459 | symhdr->issExtMax = 0; |
| 6460 | symhdr->ifdMax = 0; |
| 6461 | symhdr->crfd = 0; |
| 6462 | symhdr->iextMax = 0; |
| 6463 | |
| 6464 | /* We accumulate the debugging information itself in the |
| 6465 | debug_info structure. */ |
| 6466 | debug.line = NULL; |
| 6467 | debug.external_dnr = NULL; |
| 6468 | debug.external_pdr = NULL; |
| 6469 | debug.external_sym = NULL; |
| 6470 | debug.external_opt = NULL; |
| 6471 | debug.external_aux = NULL; |
| 6472 | debug.ss = NULL; |
| 6473 | debug.ssext = debug.ssext_end = NULL; |
| 6474 | debug.external_fdr = NULL; |
| 6475 | debug.external_rfd = NULL; |
| 6476 | debug.external_ext = debug.external_ext_end = NULL; |
| 6477 | |
| 6478 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); |
| 6479 | if (mdebug_handle == (PTR) NULL) |
| 6480 | return false; |
| 6481 | |
| 6482 | esym.jmptbl = 0; |
| 6483 | esym.cobol_main = 0; |
| 6484 | esym.weakext = 0; |
| 6485 | esym.reserved = 0; |
| 6486 | esym.ifd = ifdNil; |
| 6487 | esym.asym.iss = issNil; |
| 6488 | esym.asym.st = stLocal; |
| 6489 | esym.asym.reserved = 0; |
| 6490 | esym.asym.index = indexNil; |
| 6491 | last = 0; |
| 6492 | for (i = 0; i < sizeof (secname) / sizeof (secname[0]); i++) |
| 6493 | { |
| 6494 | esym.asym.sc = sc[i]; |
| 6495 | s = bfd_get_section_by_name (abfd, secname[i]); |
| 6496 | if (s != NULL) |
| 6497 | { |
| 6498 | esym.asym.value = s->vma; |
| 6499 | last = s->vma + s->_raw_size; |
| 6500 | } |
| 6501 | else |
| 6502 | esym.asym.value = last; |
| 6503 | if (!bfd_ecoff_debug_one_external (abfd, &debug, swap, |
| 6504 | secname[i], &esym)) |
| 6505 | return false; |
| 6506 | } |
| 6507 | |
| 6508 | for (p = o->link_order_head; |
| 6509 | p != (struct bfd_link_order *) NULL; |
| 6510 | p = p->next) |
| 6511 | { |
| 6512 | asection *input_section; |
| 6513 | bfd *input_bfd; |
| 6514 | const struct ecoff_debug_swap *input_swap; |
| 6515 | struct ecoff_debug_info input_debug; |
| 6516 | char *eraw_src; |
| 6517 | char *eraw_end; |
| 6518 | |
| 6519 | if (p->type != bfd_indirect_link_order) |
| 6520 | { |
| 6521 | if (p->type == bfd_fill_link_order) |
| 6522 | continue; |
| 6523 | abort (); |
| 6524 | } |
| 6525 | |
| 6526 | input_section = p->u.indirect.section; |
| 6527 | input_bfd = input_section->owner; |
| 6528 | |
| 6529 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour |
| 6530 | || (get_elf_backend_data (input_bfd) |
| 6531 | ->elf_backend_ecoff_debug_swap) == NULL) |
| 6532 | { |
| 6533 | /* I don't know what a non MIPS ELF bfd would be |
| 6534 | doing with a .mdebug section, but I don't really |
| 6535 | want to deal with it. */ |
| 6536 | continue; |
| 6537 | } |
| 6538 | |
| 6539 | input_swap = (get_elf_backend_data (input_bfd) |
| 6540 | ->elf_backend_ecoff_debug_swap); |
| 6541 | |
| 6542 | BFD_ASSERT (p->size == input_section->_raw_size); |
| 6543 | |
| 6544 | /* The ECOFF linking code expects that we have already |
| 6545 | read in the debugging information and set up an |
| 6546 | ecoff_debug_info structure, so we do that now. */ |
| 6547 | if (! _bfd_mips_elf_read_ecoff_info (input_bfd, input_section, |
| 6548 | &input_debug)) |
| 6549 | return false; |
| 6550 | |
| 6551 | if (! (bfd_ecoff_debug_accumulate |
| 6552 | (mdebug_handle, abfd, &debug, swap, input_bfd, |
| 6553 | &input_debug, input_swap, info))) |
| 6554 | return false; |
| 6555 | |
| 6556 | /* Loop through the external symbols. For each one with |
| 6557 | interesting information, try to find the symbol in |
| 6558 | the linker global hash table and save the information |
| 6559 | for the output external symbols. */ |
| 6560 | eraw_src = input_debug.external_ext; |
| 6561 | eraw_end = (eraw_src |
| 6562 | + (input_debug.symbolic_header.iextMax |
| 6563 | * input_swap->external_ext_size)); |
| 6564 | for (; |
| 6565 | eraw_src < eraw_end; |
| 6566 | eraw_src += input_swap->external_ext_size) |
| 6567 | { |
| 6568 | EXTR ext; |
| 6569 | const char *name; |
| 6570 | struct mips_elf64_link_hash_entry *h; |
| 6571 | |
| 6572 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); |
| 6573 | if (ext.asym.sc == scNil |
| 6574 | || ext.asym.sc == scUndefined |
| 6575 | || ext.asym.sc == scSUndefined) |
| 6576 | continue; |
| 6577 | |
| 6578 | name = input_debug.ssext + ext.asym.iss; |
| 6579 | h = mips_elf64_link_hash_lookup (mips_elf64_hash_table (info), |
| 6580 | name, false, false, true); |
| 6581 | if (h == NULL || h->esym.ifd != -2) |
| 6582 | continue; |
| 6583 | |
| 6584 | if (ext.ifd != -1) |
| 6585 | { |
| 6586 | BFD_ASSERT (ext.ifd |
| 6587 | < input_debug.symbolic_header.ifdMax); |
| 6588 | ext.ifd = input_debug.ifdmap[ext.ifd]; |
| 6589 | } |
| 6590 | |
| 6591 | h->esym = ext; |
| 6592 | } |
| 6593 | |
| 6594 | /* Free up the information we just read. */ |
| 6595 | free (input_debug.line); |
| 6596 | free (input_debug.external_dnr); |
| 6597 | free (input_debug.external_pdr); |
| 6598 | free (input_debug.external_sym); |
| 6599 | free (input_debug.external_opt); |
| 6600 | free (input_debug.external_aux); |
| 6601 | free (input_debug.ss); |
| 6602 | free (input_debug.ssext); |
| 6603 | free (input_debug.external_fdr); |
| 6604 | free (input_debug.external_rfd); |
| 6605 | free (input_debug.external_ext); |
| 6606 | |
| 6607 | /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| 6608 | elf_link_input_bfd ignores this section. */ |
| 6609 | input_section->flags &=~ SEC_HAS_CONTENTS; |
| 6610 | } |
| 6611 | |
| 6612 | /* Build the external symbol information. */ |
| 6613 | einfo.abfd = abfd; |
| 6614 | einfo.info = info; |
| 6615 | einfo.debug = &debug; |
| 6616 | einfo.swap = swap; |
| 6617 | einfo.failed = false; |
| 6618 | mips_elf64_link_hash_traverse (mips_elf64_hash_table (info), |
| 6619 | mips_elf64_output_extsym, |
| 6620 | (PTR) &einfo); |
| 6621 | if (einfo.failed) |
| 6622 | return false; |
| 6623 | |
| 6624 | /* Set the size of the .mdebug section. */ |
| 6625 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); |
| 6626 | |
| 6627 | /* Skip this section later on (I don't think this currently |
| 6628 | matters, but someday it might). */ |
| 6629 | o->link_order_head = (struct bfd_link_order *) NULL; |
| 6630 | |
| 6631 | mdebug_sec = o; |
| 6632 | } |
| 6633 | |
| 6634 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) |
| 6635 | { |
| 6636 | const char *subname; |
| 6637 | unsigned int c; |
| 6638 | Elf32_gptab *tab; |
| 6639 | Elf32_External_gptab *ext_tab; |
| 6640 | unsigned int i; |
| 6641 | |
| 6642 | /* The .gptab.sdata and .gptab.sbss sections hold |
| 6643 | information describing how the small data area would |
| 6644 | change depending upon the -G switch. These sections |
| 6645 | not used in executables files. */ |
| 6646 | if (! info->relocateable) |
| 6647 | { |
| 6648 | asection **secpp; |
| 6649 | |
| 6650 | for (p = o->link_order_head; |
| 6651 | p != (struct bfd_link_order *) NULL; |
| 6652 | p = p->next) |
| 6653 | { |
| 6654 | asection *input_section; |
| 6655 | |
| 6656 | if (p->type != bfd_indirect_link_order) |
| 6657 | { |
| 6658 | if (p->type == bfd_fill_link_order) |
| 6659 | continue; |
| 6660 | abort (); |
| 6661 | } |
| 6662 | |
| 6663 | input_section = p->u.indirect.section; |
| 6664 | |
| 6665 | /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| 6666 | elf_link_input_bfd ignores this section. */ |
| 6667 | input_section->flags &=~ SEC_HAS_CONTENTS; |
| 6668 | } |
| 6669 | |
| 6670 | /* Skip this section later on (I don't think this |
| 6671 | currently matters, but someday it might). */ |
| 6672 | o->link_order_head = (struct bfd_link_order *) NULL; |
| 6673 | |
| 6674 | /* Really remove the section. */ |
| 6675 | for (secpp = &abfd->sections; |
| 6676 | *secpp != o; |
| 6677 | secpp = &(*secpp)->next) |
| 6678 | ; |
| 6679 | bfd_section_list_remove (abfd, secpp); |
| 6680 | --abfd->section_count; |
| 6681 | |
| 6682 | continue; |
| 6683 | } |
| 6684 | |
| 6685 | /* There is one gptab for initialized data, and one for |
| 6686 | uninitialized data. */ |
| 6687 | if (strcmp (o->name, ".gptab.sdata") == 0) |
| 6688 | gptab_data_sec = o; |
| 6689 | else if (strcmp (o->name, ".gptab.sbss") == 0) |
| 6690 | gptab_bss_sec = o; |
| 6691 | else |
| 6692 | { |
| 6693 | (*_bfd_error_handler) |
| 6694 | (_("%s: illegal section name `%s'"), |
| 6695 | bfd_archive_filename (abfd), o->name); |
| 6696 | bfd_set_error (bfd_error_nonrepresentable_section); |
| 6697 | return false; |
| 6698 | } |
| 6699 | |
| 6700 | /* The linker script always combines .gptab.data and |
| 6701 | .gptab.sdata into .gptab.sdata, and likewise for |
| 6702 | .gptab.bss and .gptab.sbss. It is possible that there is |
| 6703 | no .sdata or .sbss section in the output file, in which |
| 6704 | case we must change the name of the output section. */ |
| 6705 | subname = o->name + sizeof ".gptab" - 1; |
| 6706 | if (bfd_get_section_by_name (abfd, subname) == NULL) |
| 6707 | { |
| 6708 | if (o == gptab_data_sec) |
| 6709 | o->name = ".gptab.data"; |
| 6710 | else |
| 6711 | o->name = ".gptab.bss"; |
| 6712 | subname = o->name + sizeof ".gptab" - 1; |
| 6713 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); |
| 6714 | } |
| 6715 | |
| 6716 | /* Set up the first entry. */ |
| 6717 | c = 1; |
| 6718 | tab = (Elf32_gptab *) bfd_malloc (c * sizeof (Elf32_gptab)); |
| 6719 | if (tab == NULL) |
| 6720 | return false; |
| 6721 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
| 6722 | tab[0].gt_header.gt_unused = 0; |
| 6723 | |
| 6724 | /* Combine the input sections. */ |
| 6725 | for (p = o->link_order_head; |
| 6726 | p != (struct bfd_link_order *) NULL; |
| 6727 | p = p->next) |
| 6728 | { |
| 6729 | asection *input_section; |
| 6730 | bfd *input_bfd; |
| 6731 | bfd_size_type size; |
| 6732 | unsigned long last; |
| 6733 | bfd_size_type gpentry; |
| 6734 | |
| 6735 | if (p->type != bfd_indirect_link_order) |
| 6736 | { |
| 6737 | if (p->type == bfd_fill_link_order) |
| 6738 | continue; |
| 6739 | abort (); |
| 6740 | } |
| 6741 | |
| 6742 | input_section = p->u.indirect.section; |
| 6743 | input_bfd = input_section->owner; |
| 6744 | |
| 6745 | /* Combine the gptab entries for this input section one |
| 6746 | by one. We know that the input gptab entries are |
| 6747 | sorted by ascending -G value. */ |
| 6748 | size = bfd_section_size (input_bfd, input_section); |
| 6749 | last = 0; |
| 6750 | for (gpentry = sizeof (Elf32_External_gptab); |
| 6751 | gpentry < size; |
| 6752 | gpentry += sizeof (Elf32_External_gptab)) |
| 6753 | { |
| 6754 | Elf32_External_gptab ext_gptab; |
| 6755 | Elf32_gptab int_gptab; |
| 6756 | unsigned long val; |
| 6757 | unsigned long add; |
| 6758 | boolean exact; |
| 6759 | unsigned int look; |
| 6760 | |
| 6761 | if (! (bfd_get_section_contents |
| 6762 | (input_bfd, input_section, (PTR) &ext_gptab, |
| 6763 | gpentry, sizeof (Elf32_External_gptab)))) |
| 6764 | { |
| 6765 | free (tab); |
| 6766 | return false; |
| 6767 | } |
| 6768 | |
| 6769 | mips_elf64_swap_gptab_in (input_bfd, &ext_gptab, |
| 6770 | &int_gptab); |
| 6771 | val = int_gptab.gt_entry.gt_g_value; |
| 6772 | add = int_gptab.gt_entry.gt_bytes - last; |
| 6773 | |
| 6774 | exact = false; |
| 6775 | for (look = 1; look < c; look++) |
| 6776 | { |
| 6777 | if (tab[look].gt_entry.gt_g_value >= val) |
| 6778 | tab[look].gt_entry.gt_bytes += add; |
| 6779 | |
| 6780 | if (tab[look].gt_entry.gt_g_value == val) |
| 6781 | exact = true; |
| 6782 | } |
| 6783 | |
| 6784 | if (! exact) |
| 6785 | { |
| 6786 | Elf32_gptab *new_tab; |
| 6787 | unsigned int max; |
| 6788 | |
| 6789 | /* We need a new table entry. */ |
| 6790 | new_tab = ((Elf32_gptab *) |
| 6791 | bfd_realloc ((PTR) tab, |
| 6792 | (c + 1) * sizeof (Elf32_gptab))); |
| 6793 | if (new_tab == NULL) |
| 6794 | { |
| 6795 | free (tab); |
| 6796 | return false; |
| 6797 | } |
| 6798 | tab = new_tab; |
| 6799 | tab[c].gt_entry.gt_g_value = val; |
| 6800 | tab[c].gt_entry.gt_bytes = add; |
| 6801 | |
| 6802 | /* Merge in the size for the next smallest -G |
| 6803 | value, since that will be implied by this new |
| 6804 | value. */ |
| 6805 | max = 0; |
| 6806 | for (look = 1; look < c; look++) |
| 6807 | { |
| 6808 | if (tab[look].gt_entry.gt_g_value < val |
| 6809 | && (max == 0 |
| 6810 | || (tab[look].gt_entry.gt_g_value |
| 6811 | > tab[max].gt_entry.gt_g_value))) |
| 6812 | max = look; |
| 6813 | } |
| 6814 | if (max != 0) |
| 6815 | tab[c].gt_entry.gt_bytes += |
| 6816 | tab[max].gt_entry.gt_bytes; |
| 6817 | |
| 6818 | ++c; |
| 6819 | } |
| 6820 | |
| 6821 | last = int_gptab.gt_entry.gt_bytes; |
| 6822 | } |
| 6823 | |
| 6824 | /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| 6825 | elf_link_input_bfd ignores this section. */ |
| 6826 | input_section->flags &=~ SEC_HAS_CONTENTS; |
| 6827 | } |
| 6828 | |
| 6829 | /* The table must be sorted by -G value. */ |
| 6830 | if (c > 2) |
| 6831 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); |
| 6832 | |
| 6833 | /* Swap out the table. */ |
| 6834 | ext_tab = ((Elf32_External_gptab *) |
| 6835 | bfd_alloc (abfd, c * sizeof (Elf32_External_gptab))); |
| 6836 | if (ext_tab == NULL) |
| 6837 | { |
| 6838 | free (tab); |
| 6839 | return false; |
| 6840 | } |
| 6841 | |
| 6842 | for (i = 0; i < c; i++) |
| 6843 | mips_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i); |
| 6844 | free (tab); |
| 6845 | |
| 6846 | o->_raw_size = c * sizeof (Elf32_External_gptab); |
| 6847 | o->contents = (bfd_byte *) ext_tab; |
| 6848 | |
| 6849 | /* Skip this section later on (I don't think this currently |
| 6850 | matters, but someday it might). */ |
| 6851 | o->link_order_head = (struct bfd_link_order *) NULL; |
| 6852 | } |
| 6853 | } |
| 6854 | |
| 6855 | /* Invoke the regular ELF backend linker to do all the work. */ |
| 6856 | if (!bfd_elf64_bfd_final_link (abfd, info)) |
| 6857 | return false; |
| 6858 | |
| 6859 | /* Now write out the computed sections. */ |
| 6860 | if (mdebug_sec != (asection *) NULL) |
| 6861 | { |
| 6862 | BFD_ASSERT (abfd->output_has_begun); |
| 6863 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, |
| 6864 | swap, info, |
| 6865 | mdebug_sec->filepos)) |
| 6866 | return false; |
| 6867 | |
| 6868 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); |
| 6869 | } |
| 6870 | if (gptab_data_sec != (asection *) NULL) |
| 6871 | { |
| 6872 | if (! bfd_set_section_contents (abfd, gptab_data_sec, |
| 6873 | gptab_data_sec->contents, |
| 6874 | (file_ptr) 0, |
| 6875 | gptab_data_sec->_raw_size)) |
| 6876 | return false; |
| 6877 | } |
| 6878 | |
| 6879 | if (gptab_bss_sec != (asection *) NULL) |
| 6880 | { |
| 6881 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, |
| 6882 | gptab_bss_sec->contents, |
| 6883 | (file_ptr) 0, |
| 6884 | gptab_bss_sec->_raw_size)) |
| 6885 | return false; |
| 6886 | } |
| 6887 | |
| 6888 | return true; |
| 6889 | } |
| 6890 | \f |
| 6891 | /* ECOFF swapping routines. These are used when dealing with the |
| 6892 | .mdebug section, which is in the ECOFF debugging format. */ |
| 6893 | static const struct ecoff_debug_swap mips_elf64_ecoff_debug_swap = |
| 6894 | { |
| 6895 | /* Symbol table magic number. */ |
| 6896 | magicSym2, |
| 6897 | /* Alignment of debugging information. E.g., 4. */ |
| 6898 | 8, |
| 6899 | /* Sizes of external symbolic information. */ |
| 6900 | sizeof (struct hdr_ext), |
| 6901 | sizeof (struct dnr_ext), |
| 6902 | sizeof (struct pdr_ext), |
| 6903 | sizeof (struct sym_ext), |
| 6904 | sizeof (struct opt_ext), |
| 6905 | sizeof (struct fdr_ext), |
| 6906 | sizeof (struct rfd_ext), |
| 6907 | sizeof (struct ext_ext), |
| 6908 | /* Functions to swap in external symbolic data. */ |
| 6909 | ecoff_swap_hdr_in, |
| 6910 | ecoff_swap_dnr_in, |
| 6911 | ecoff_swap_pdr_in, |
| 6912 | ecoff_swap_sym_in, |
| 6913 | ecoff_swap_opt_in, |
| 6914 | ecoff_swap_fdr_in, |
| 6915 | ecoff_swap_rfd_in, |
| 6916 | ecoff_swap_ext_in, |
| 6917 | _bfd_ecoff_swap_tir_in, |
| 6918 | _bfd_ecoff_swap_rndx_in, |
| 6919 | /* Functions to swap out external symbolic data. */ |
| 6920 | ecoff_swap_hdr_out, |
| 6921 | ecoff_swap_dnr_out, |
| 6922 | ecoff_swap_pdr_out, |
| 6923 | ecoff_swap_sym_out, |
| 6924 | ecoff_swap_opt_out, |
| 6925 | ecoff_swap_fdr_out, |
| 6926 | ecoff_swap_rfd_out, |
| 6927 | ecoff_swap_ext_out, |
| 6928 | _bfd_ecoff_swap_tir_out, |
| 6929 | _bfd_ecoff_swap_rndx_out, |
| 6930 | /* Function to read in symbolic data. */ |
| 6931 | _bfd_mips_elf_read_ecoff_info |
| 6932 | }; |
| 6933 | \f |
| 6934 | /* Relocations in the 64 bit MIPS ELF ABI are more complex than in |
| 6935 | standard ELF. This structure is used to redirect the relocation |
| 6936 | handling routines. */ |
| 6937 | |
| 6938 | const struct elf_size_info mips_elf64_size_info = |
| 6939 | { |
| 6940 | sizeof (Elf64_External_Ehdr), |
| 6941 | sizeof (Elf64_External_Phdr), |
| 6942 | sizeof (Elf64_External_Shdr), |
| 6943 | sizeof (Elf64_Mips_External_Rel), |
| 6944 | sizeof (Elf64_Mips_External_Rela), |
| 6945 | sizeof (Elf64_External_Sym), |
| 6946 | sizeof (Elf64_External_Dyn), |
| 6947 | sizeof (Elf_External_Note), |
| 6948 | 4, /* hash-table entry size */ |
| 6949 | 3, /* internal relocations per external relocations */ |
| 6950 | 64, /* arch_size */ |
| 6951 | 8, /* file_align */ |
| 6952 | ELFCLASS64, |
| 6953 | EV_CURRENT, |
| 6954 | bfd_elf64_write_out_phdrs, |
| 6955 | bfd_elf64_write_shdrs_and_ehdr, |
| 6956 | mips_elf64_write_relocs, |
| 6957 | bfd_elf64_swap_symbol_out, |
| 6958 | mips_elf64_slurp_reloc_table, |
| 6959 | bfd_elf64_slurp_symbol_table, |
| 6960 | bfd_elf64_swap_dyn_in, |
| 6961 | bfd_elf64_swap_dyn_out, |
| 6962 | mips_elf64_be_swap_reloc_in, |
| 6963 | mips_elf64_be_swap_reloc_out, |
| 6964 | mips_elf64_be_swap_reloca_in, |
| 6965 | mips_elf64_be_swap_reloca_out |
| 6966 | }; |
| 6967 | |
| 6968 | #define ELF_ARCH bfd_arch_mips |
| 6969 | #define ELF_MACHINE_CODE EM_MIPS |
| 6970 | |
| 6971 | #define ELF_MAXPAGESIZE 0x1000 |
| 6972 | |
| 6973 | #define elf_backend_collect true |
| 6974 | #define elf_backend_type_change_ok true |
| 6975 | #define elf_backend_can_gc_sections true |
| 6976 | #define elf_info_to_howto mips_elf64_info_to_howto_rela |
| 6977 | #define elf_info_to_howto_rel mips_elf64_info_to_howto_rel |
| 6978 | #define elf_backend_object_p _bfd_mips_elf_object_p |
| 6979 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
| 6980 | #define elf_backend_section_processing _bfd_mips_elf_section_processing |
| 6981 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
| 6982 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
| 6983 | #define elf_backend_section_from_bfd_section \ |
| 6984 | _bfd_mips_elf_section_from_bfd_section |
| 6985 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
| 6986 | #define elf_backend_link_output_symbol_hook \ |
| 6987 | _bfd_mips_elf_link_output_symbol_hook |
| 6988 | #define elf_backend_create_dynamic_sections \ |
| 6989 | mips_elf64_create_dynamic_sections |
| 6990 | #define elf_backend_check_relocs mips_elf64_check_relocs |
| 6991 | #define elf_backend_adjust_dynamic_symbol \ |
| 6992 | mips_elf64_adjust_dynamic_symbol |
| 6993 | #define elf_backend_always_size_sections \ |
| 6994 | mips_elf64_always_size_sections |
| 6995 | #define elf_backend_size_dynamic_sections \ |
| 6996 | mips_elf64_size_dynamic_sections |
| 6997 | #define elf_backend_relocate_section mips_elf64_relocate_section |
| 6998 | #define elf_backend_finish_dynamic_symbol \ |
| 6999 | mips_elf64_finish_dynamic_symbol |
| 7000 | #define elf_backend_finish_dynamic_sections \ |
| 7001 | mips_elf64_finish_dynamic_sections |
| 7002 | #define elf_backend_final_write_processing \ |
| 7003 | _bfd_mips_elf_final_write_processing |
| 7004 | #define elf_backend_additional_program_headers \ |
| 7005 | mips_elf64_additional_program_headers |
| 7006 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map |
| 7007 | #define elf_backend_gc_mark_hook mips_elf64_gc_mark_hook |
| 7008 | #define elf_backend_gc_sweep_hook mips_elf64_gc_sweep_hook |
| 7009 | #define elf_backend_ecoff_debug_swap &mips_elf64_ecoff_debug_swap |
| 7010 | #define elf_backend_size_info mips_elf64_size_info |
| 7011 | |
| 7012 | #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) |
| 7013 | #define elf_backend_plt_header_size 0 |
| 7014 | |
| 7015 | /* MIPS ELF64 can use a mixture of REL and RELA, but some Relocations |
| 7016 | * work better/work only in RELA, so we default to this. */ |
| 7017 | #define elf_backend_may_use_rel_p 1 |
| 7018 | #define elf_backend_may_use_rela_p 1 |
| 7019 | #define elf_backend_default_use_rela_p 1 |
| 7020 | |
| 7021 | /* We don't set bfd_elf64_bfd_is_local_label_name because the 32-bit |
| 7022 | MIPS-specific function only applies to IRIX5, which had no 64-bit |
| 7023 | ABI. */ |
| 7024 | #define bfd_elf64_find_nearest_line _bfd_mips_elf_find_nearest_line |
| 7025 | #define bfd_elf64_set_section_contents _bfd_mips_elf_set_section_contents |
| 7026 | #define bfd_elf64_bfd_link_hash_table_create \ |
| 7027 | mips_elf64_link_hash_table_create |
| 7028 | #define bfd_elf64_bfd_final_link mips_elf64_final_link |
| 7029 | #define bfd_elf64_bfd_merge_private_bfd_data \ |
| 7030 | _bfd_mips_elf_merge_private_bfd_data |
| 7031 | #define bfd_elf64_bfd_set_private_flags _bfd_mips_elf_set_private_flags |
| 7032 | #define bfd_elf64_bfd_print_private_bfd_data \ |
| 7033 | _bfd_mips_elf_print_private_bfd_data |
| 7034 | |
| 7035 | #define bfd_elf64_get_reloc_upper_bound mips_elf64_get_reloc_upper_bound |
| 7036 | #define bfd_elf64_bfd_reloc_type_lookup mips_elf64_reloc_type_lookup |
| 7037 | #define bfd_elf64_archive_functions |
| 7038 | extern boolean bfd_elf64_archive_slurp_armap |
| 7039 | PARAMS((bfd *)); |
| 7040 | extern boolean bfd_elf64_archive_write_armap |
| 7041 | PARAMS((bfd *, unsigned int, struct orl *, unsigned int, int)); |
| 7042 | #define bfd_elf64_archive_slurp_extended_name_table \ |
| 7043 | _bfd_archive_coff_slurp_extended_name_table |
| 7044 | #define bfd_elf64_archive_construct_extended_name_table \ |
| 7045 | _bfd_archive_coff_construct_extended_name_table |
| 7046 | #define bfd_elf64_archive_truncate_arname \ |
| 7047 | _bfd_archive_coff_truncate_arname |
| 7048 | #define bfd_elf64_archive_read_ar_hdr _bfd_archive_coff_read_ar_hdr |
| 7049 | #define bfd_elf64_archive_openr_next_archived_file \ |
| 7050 | _bfd_archive_coff_openr_next_archived_file |
| 7051 | #define bfd_elf64_archive_get_elt_at_index \ |
| 7052 | _bfd_archive_coff_get_elt_at_index |
| 7053 | #define bfd_elf64_archive_generic_stat_arch_elt \ |
| 7054 | _bfd_archive_coff_generic_stat_arch_elt |
| 7055 | #define bfd_elf64_archive_update_armap_timestamp \ |
| 7056 | _bfd_archive_coff_update_armap_timestamp |
| 7057 | |
| 7058 | /* The SGI style (n)64 NewABI. */ |
| 7059 | #define TARGET_LITTLE_SYM bfd_elf64_littlemips_vec |
| 7060 | #define TARGET_LITTLE_NAME "elf64-littlemips" |
| 7061 | #define TARGET_BIG_SYM bfd_elf64_bigmips_vec |
| 7062 | #define TARGET_BIG_NAME "elf64-bigmips" |
| 7063 | |
| 7064 | #include "elf64-target.h" |
| 7065 | |
| 7066 | #define INCLUDED_TARGET_FILE /* More a type of flag. */ |
| 7067 | |
| 7068 | /* The SYSV-style 'traditional' (n)64 NewABI. */ |
| 7069 | #undef TARGET_LITTLE_SYM |
| 7070 | #undef TARGET_LITTLE_NAME |
| 7071 | #undef TARGET_BIG_SYM |
| 7072 | #undef TARGET_BIG_NAME |
| 7073 | |
| 7074 | #define TARGET_LITTLE_SYM bfd_elf64_tradlittlemips_vec |
| 7075 | #define TARGET_LITTLE_NAME "elf64-tradlittlemips" |
| 7076 | #define TARGET_BIG_SYM bfd_elf64_tradbigmips_vec |
| 7077 | #define TARGET_BIG_NAME "elf64-tradbigmips" |
| 7078 | |
| 7079 | /* Include the target file again for this target. */ |
| 7080 | #include "elf64-target.h" |