| 1 | /* Alpha specific support for 64-bit ELF |
| 2 | Copyright 1996, 97, 98, 1999 Free Software Foundation, Inc. |
| 3 | Contributed by Richard Henderson <rth@tamu.edu>. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 2 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 20 | |
| 21 | /* We need a published ABI spec for this. Until one comes out, don't |
| 22 | assume this'll remain unchanged forever. */ |
| 23 | |
| 24 | #include "bfd.h" |
| 25 | #include "sysdep.h" |
| 26 | #include "libbfd.h" |
| 27 | #include "elf-bfd.h" |
| 28 | |
| 29 | #include "elf/alpha.h" |
| 30 | |
| 31 | #define ALPHAECOFF |
| 32 | |
| 33 | #define NO_COFF_RELOCS |
| 34 | #define NO_COFF_SYMBOLS |
| 35 | #define NO_COFF_LINENOS |
| 36 | |
| 37 | /* Get the ECOFF swapping routines. Needed for the debug information. */ |
| 38 | #include "coff/internal.h" |
| 39 | #include "coff/sym.h" |
| 40 | #include "coff/symconst.h" |
| 41 | #include "coff/ecoff.h" |
| 42 | #include "coff/alpha.h" |
| 43 | #include "aout/ar.h" |
| 44 | #include "libcoff.h" |
| 45 | #include "libecoff.h" |
| 46 | #define ECOFF_64 |
| 47 | #include "ecoffswap.h" |
| 48 | |
| 49 | static boolean elf64_alpha_mkobject PARAMS ((bfd *)); |
| 50 | static struct bfd_hash_entry * elf64_alpha_link_hash_newfunc |
| 51 | PARAMS((struct bfd_hash_entry *, struct bfd_hash_table *, const char *)); |
| 52 | static struct bfd_link_hash_table * elf64_alpha_bfd_link_hash_table_create |
| 53 | PARAMS((bfd *)); |
| 54 | |
| 55 | static bfd_reloc_status_type elf64_alpha_reloc_nil |
| 56 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 57 | static bfd_reloc_status_type elf64_alpha_reloc_bad |
| 58 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 59 | static bfd_reloc_status_type elf64_alpha_do_reloc_gpdisp |
| 60 | PARAMS((bfd *, bfd_vma, bfd_byte *, bfd_byte *)); |
| 61 | static bfd_reloc_status_type elf64_alpha_reloc_gpdisp |
| 62 | PARAMS((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 63 | |
| 64 | static reloc_howto_type * elf64_alpha_bfd_reloc_type_lookup |
| 65 | PARAMS((bfd *, bfd_reloc_code_real_type)); |
| 66 | static void elf64_alpha_info_to_howto |
| 67 | PARAMS((bfd *, arelent *, Elf64_Internal_Rela *)); |
| 68 | |
| 69 | static boolean elf64_alpha_object_p |
| 70 | PARAMS((bfd *)); |
| 71 | static boolean elf64_alpha_section_from_shdr |
| 72 | PARAMS((bfd *, Elf64_Internal_Shdr *, char *)); |
| 73 | static boolean elf64_alpha_fake_sections |
| 74 | PARAMS((bfd *, Elf64_Internal_Shdr *, asection *)); |
| 75 | static boolean elf64_alpha_create_got_section |
| 76 | PARAMS((bfd *, struct bfd_link_info *)); |
| 77 | static boolean elf64_alpha_create_dynamic_sections |
| 78 | PARAMS((bfd *, struct bfd_link_info *)); |
| 79 | |
| 80 | static boolean elf64_alpha_read_ecoff_info |
| 81 | PARAMS((bfd *, asection *, struct ecoff_debug_info *)); |
| 82 | static boolean elf64_alpha_is_local_label_name |
| 83 | PARAMS((bfd *, const char *)); |
| 84 | static boolean elf64_alpha_find_nearest_line |
| 85 | PARAMS((bfd *, asection *, asymbol **, bfd_vma, const char **, |
| 86 | const char **, unsigned int *)); |
| 87 | |
| 88 | #if defined(__STDC__) || defined(ALMOST_STDC) |
| 89 | struct alpha_elf_link_hash_entry; |
| 90 | #endif |
| 91 | |
| 92 | static boolean elf64_alpha_output_extsym |
| 93 | PARAMS((struct alpha_elf_link_hash_entry *, PTR)); |
| 94 | |
| 95 | static boolean elf64_alpha_can_merge_gots |
| 96 | PARAMS((bfd *, bfd *)); |
| 97 | static void elf64_alpha_merge_gots |
| 98 | PARAMS((bfd *, bfd *)); |
| 99 | static boolean elf64_alpha_calc_got_offsets_for_symbol |
| 100 | PARAMS ((struct alpha_elf_link_hash_entry *, PTR)); |
| 101 | static void elf64_alpha_calc_got_offsets PARAMS ((struct bfd_link_info *)); |
| 102 | static boolean elf64_alpha_size_got_sections |
| 103 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 104 | static boolean elf64_alpha_always_size_sections |
| 105 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 106 | static boolean elf64_alpha_calc_dynrel_sizes |
| 107 | PARAMS ((struct alpha_elf_link_hash_entry *, struct bfd_link_info *)); |
| 108 | static boolean elf64_alpha_add_symbol_hook |
| 109 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, |
| 110 | const char **, flagword *, asection **, bfd_vma *)); |
| 111 | static boolean elf64_alpha_check_relocs |
| 112 | PARAMS((bfd *, struct bfd_link_info *, asection *sec, |
| 113 | const Elf_Internal_Rela *)); |
| 114 | static boolean elf64_alpha_adjust_dynamic_symbol |
| 115 | PARAMS((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| 116 | static boolean elf64_alpha_size_dynamic_sections |
| 117 | PARAMS((bfd *, struct bfd_link_info *)); |
| 118 | static boolean elf64_alpha_adjust_dynindx |
| 119 | PARAMS((struct elf_link_hash_entry *, PTR)); |
| 120 | static boolean elf64_alpha_relocate_section |
| 121 | PARAMS((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *, |
| 122 | Elf_Internal_Rela *, Elf_Internal_Sym *, asection **)); |
| 123 | static boolean elf64_alpha_finish_dynamic_symbol |
| 124 | PARAMS((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, |
| 125 | Elf_Internal_Sym *)); |
| 126 | static boolean elf64_alpha_finish_dynamic_sections |
| 127 | PARAMS((bfd *, struct bfd_link_info *)); |
| 128 | static boolean elf64_alpha_final_link |
| 129 | PARAMS((bfd *, struct bfd_link_info *)); |
| 130 | |
| 131 | \f |
| 132 | struct alpha_elf_link_hash_entry |
| 133 | { |
| 134 | struct elf_link_hash_entry root; |
| 135 | |
| 136 | /* External symbol information. */ |
| 137 | EXTR esym; |
| 138 | |
| 139 | /* Cumulative flags for all the .got entries. */ |
| 140 | int flags; |
| 141 | |
| 142 | /* Contexts (LITUSE) in which a literal was referenced. */ |
| 143 | #define ALPHA_ELF_LINK_HASH_LU_ADDR 0x01 |
| 144 | #define ALPHA_ELF_LINK_HASH_LU_MEM 0x02 |
| 145 | #define ALPHA_ELF_LINK_HASH_LU_BYTE 0x04 |
| 146 | #define ALPHA_ELF_LINK_HASH_LU_FUNC 0x08 |
| 147 | |
| 148 | /* Used to implement multiple .got subsections. */ |
| 149 | struct alpha_elf_got_entry |
| 150 | { |
| 151 | struct alpha_elf_got_entry *next; |
| 152 | |
| 153 | /* which .got subsection? */ |
| 154 | bfd *gotobj; |
| 155 | |
| 156 | /* the addend in effect for this entry. */ |
| 157 | bfd_vma addend; |
| 158 | |
| 159 | /* the .got offset for this entry. */ |
| 160 | int got_offset; |
| 161 | |
| 162 | int flags; |
| 163 | |
| 164 | /* An additional flag. */ |
| 165 | #define ALPHA_ELF_GOT_ENTRY_RELOCS_DONE 0x10 |
| 166 | |
| 167 | int use_count; |
| 168 | } *got_entries; |
| 169 | |
| 170 | /* used to count non-got, non-plt relocations for delayed sizing |
| 171 | of relocation sections. */ |
| 172 | struct alpha_elf_reloc_entry |
| 173 | { |
| 174 | struct alpha_elf_reloc_entry *next; |
| 175 | |
| 176 | /* which .reloc section? */ |
| 177 | asection *srel; |
| 178 | |
| 179 | /* what kind of relocation? */ |
| 180 | unsigned long rtype; |
| 181 | |
| 182 | /* how many did we find? */ |
| 183 | unsigned long count; |
| 184 | } *reloc_entries; |
| 185 | }; |
| 186 | |
| 187 | /* Alpha ELF linker hash table. */ |
| 188 | |
| 189 | struct alpha_elf_link_hash_table |
| 190 | { |
| 191 | struct elf_link_hash_table root; |
| 192 | |
| 193 | /* The head of a list of .got subsections linked through |
| 194 | alpha_elf_tdata(abfd)->got_link_next. */ |
| 195 | bfd *got_list; |
| 196 | }; |
| 197 | |
| 198 | /* Look up an entry in a Alpha ELF linker hash table. */ |
| 199 | |
| 200 | #define alpha_elf_link_hash_lookup(table, string, create, copy, follow) \ |
| 201 | ((struct alpha_elf_link_hash_entry *) \ |
| 202 | elf_link_hash_lookup (&(table)->root, (string), (create), \ |
| 203 | (copy), (follow))) |
| 204 | |
| 205 | /* Traverse a Alpha ELF linker hash table. */ |
| 206 | |
| 207 | #define alpha_elf_link_hash_traverse(table, func, info) \ |
| 208 | (elf_link_hash_traverse \ |
| 209 | (&(table)->root, \ |
| 210 | (boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \ |
| 211 | (info))) |
| 212 | |
| 213 | /* Get the Alpha ELF linker hash table from a link_info structure. */ |
| 214 | |
| 215 | #define alpha_elf_hash_table(p) \ |
| 216 | ((struct alpha_elf_link_hash_table *) ((p)->hash)) |
| 217 | |
| 218 | /* Get the object's symbols as our own entry type. */ |
| 219 | |
| 220 | #define alpha_elf_sym_hashes(abfd) \ |
| 221 | ((struct alpha_elf_link_hash_entry **)elf_sym_hashes(abfd)) |
| 222 | |
| 223 | /* Should we do dynamic things to this symbol? */ |
| 224 | |
| 225 | #define alpha_elf_dynamic_symbol_p(h, info) \ |
| 226 | ((((info)->shared && !(info)->symbolic) \ |
| 227 | || (((h)->elf_link_hash_flags \ |
| 228 | & (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) \ |
| 229 | == (ELF_LINK_HASH_DEF_DYNAMIC | ELF_LINK_HASH_REF_REGULAR)) \ |
| 230 | || (h)->root.type == bfd_link_hash_undefweak \ |
| 231 | || (h)->root.type == bfd_link_hash_defweak) \ |
| 232 | && (h)->dynindx != -1) |
| 233 | |
| 234 | /* Create an entry in a Alpha ELF linker hash table. */ |
| 235 | |
| 236 | static struct bfd_hash_entry * |
| 237 | elf64_alpha_link_hash_newfunc (entry, table, string) |
| 238 | struct bfd_hash_entry *entry; |
| 239 | struct bfd_hash_table *table; |
| 240 | const char *string; |
| 241 | { |
| 242 | struct alpha_elf_link_hash_entry *ret = |
| 243 | (struct alpha_elf_link_hash_entry *) entry; |
| 244 | |
| 245 | /* Allocate the structure if it has not already been allocated by a |
| 246 | subclass. */ |
| 247 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) |
| 248 | ret = ((struct alpha_elf_link_hash_entry *) |
| 249 | bfd_hash_allocate (table, |
| 250 | sizeof (struct alpha_elf_link_hash_entry))); |
| 251 | if (ret == (struct alpha_elf_link_hash_entry *) NULL) |
| 252 | return (struct bfd_hash_entry *) ret; |
| 253 | |
| 254 | /* Call the allocation method of the superclass. */ |
| 255 | ret = ((struct alpha_elf_link_hash_entry *) |
| 256 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 257 | table, string)); |
| 258 | if (ret != (struct alpha_elf_link_hash_entry *) NULL) |
| 259 | { |
| 260 | /* Set local fields. */ |
| 261 | memset (&ret->esym, 0, sizeof (EXTR)); |
| 262 | /* We use -2 as a marker to indicate that the information has |
| 263 | not been set. -1 means there is no associated ifd. */ |
| 264 | ret->esym.ifd = -2; |
| 265 | ret->flags = 0; |
| 266 | ret->got_entries = NULL; |
| 267 | ret->reloc_entries = NULL; |
| 268 | } |
| 269 | |
| 270 | return (struct bfd_hash_entry *) ret; |
| 271 | } |
| 272 | |
| 273 | /* Create a Alpha ELF linker hash table. */ |
| 274 | |
| 275 | static struct bfd_link_hash_table * |
| 276 | elf64_alpha_bfd_link_hash_table_create (abfd) |
| 277 | bfd *abfd; |
| 278 | { |
| 279 | struct alpha_elf_link_hash_table *ret; |
| 280 | |
| 281 | ret = ((struct alpha_elf_link_hash_table *) |
| 282 | bfd_zalloc (abfd, sizeof (struct alpha_elf_link_hash_table))); |
| 283 | if (ret == (struct alpha_elf_link_hash_table *) NULL) |
| 284 | return NULL; |
| 285 | |
| 286 | if (! _bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 287 | elf64_alpha_link_hash_newfunc)) |
| 288 | { |
| 289 | bfd_release (abfd, ret); |
| 290 | return NULL; |
| 291 | } |
| 292 | |
| 293 | return &ret->root.root; |
| 294 | } |
| 295 | \f |
| 296 | /* We have some private fields hanging off of the elf_tdata structure. */ |
| 297 | |
| 298 | struct alpha_elf_obj_tdata |
| 299 | { |
| 300 | struct elf_obj_tdata root; |
| 301 | |
| 302 | /* For every input file, these are the got entries for that object's |
| 303 | local symbols. */ |
| 304 | struct alpha_elf_got_entry ** local_got_entries; |
| 305 | |
| 306 | /* For every input file, this is the object that owns the got that |
| 307 | this input file uses. */ |
| 308 | bfd *gotobj; |
| 309 | |
| 310 | /* For every got, this is a linked list through the objects using this got */ |
| 311 | bfd *in_got_link_next; |
| 312 | |
| 313 | /* For every got, this is a link to the next got subsegment. */ |
| 314 | bfd *got_link_next; |
| 315 | |
| 316 | /* For every got, this is the section. */ |
| 317 | asection *got; |
| 318 | |
| 319 | /* For every got, this is it's total number of *entries*. */ |
| 320 | int total_got_entries; |
| 321 | |
| 322 | /* For every got, this is the sum of the number of *entries* required |
| 323 | to hold all of the member object's local got. */ |
| 324 | int n_local_got_entries; |
| 325 | }; |
| 326 | |
| 327 | #define alpha_elf_tdata(abfd) \ |
| 328 | ((struct alpha_elf_obj_tdata *) (abfd)->tdata.any) |
| 329 | |
| 330 | static boolean |
| 331 | elf64_alpha_mkobject (abfd) |
| 332 | bfd *abfd; |
| 333 | { |
| 334 | abfd->tdata.any = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); |
| 335 | if (abfd->tdata.any == NULL) |
| 336 | return false; |
| 337 | return true; |
| 338 | } |
| 339 | |
| 340 | static boolean |
| 341 | elf64_alpha_object_p (abfd) |
| 342 | bfd *abfd; |
| 343 | { |
| 344 | /* Allocate our special target data. */ |
| 345 | struct alpha_elf_obj_tdata *new_tdata; |
| 346 | new_tdata = bfd_zalloc (abfd, sizeof (struct alpha_elf_obj_tdata)); |
| 347 | if (new_tdata == NULL) |
| 348 | return false; |
| 349 | new_tdata->root = *abfd->tdata.elf_obj_data; |
| 350 | abfd->tdata.any = new_tdata; |
| 351 | |
| 352 | /* Set the right machine number for an Alpha ELF file. */ |
| 353 | return bfd_default_set_arch_mach (abfd, bfd_arch_alpha, 0); |
| 354 | } |
| 355 | \f |
| 356 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
| 357 | from smaller values. Start with zero, widen, *then* decrement. */ |
| 358 | #define MINUS_ONE (((bfd_vma)0) - 1) |
| 359 | |
| 360 | static reloc_howto_type elf64_alpha_howto_table[] = |
| 361 | { |
| 362 | HOWTO (R_ALPHA_NONE, /* type */ |
| 363 | 0, /* rightshift */ |
| 364 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 365 | 8, /* bitsize */ |
| 366 | true, /* pc_relative */ |
| 367 | 0, /* bitpos */ |
| 368 | complain_overflow_dont, /* complain_on_overflow */ |
| 369 | elf64_alpha_reloc_nil, /* special_function */ |
| 370 | "NONE", /* name */ |
| 371 | false, /* partial_inplace */ |
| 372 | 0, /* src_mask */ |
| 373 | 0, /* dst_mask */ |
| 374 | true), /* pcrel_offset */ |
| 375 | |
| 376 | /* A 32 bit reference to a symbol. */ |
| 377 | HOWTO (R_ALPHA_REFLONG, /* type */ |
| 378 | 0, /* rightshift */ |
| 379 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 380 | 32, /* bitsize */ |
| 381 | false, /* pc_relative */ |
| 382 | 0, /* bitpos */ |
| 383 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 384 | 0, /* special_function */ |
| 385 | "REFLONG", /* name */ |
| 386 | false, /* partial_inplace */ |
| 387 | 0xffffffff, /* src_mask */ |
| 388 | 0xffffffff, /* dst_mask */ |
| 389 | false), /* pcrel_offset */ |
| 390 | |
| 391 | /* A 64 bit reference to a symbol. */ |
| 392 | HOWTO (R_ALPHA_REFQUAD, /* type */ |
| 393 | 0, /* rightshift */ |
| 394 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 395 | 64, /* bitsize */ |
| 396 | false, /* pc_relative */ |
| 397 | 0, /* bitpos */ |
| 398 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 399 | 0, /* special_function */ |
| 400 | "REFQUAD", /* name */ |
| 401 | false, /* partial_inplace */ |
| 402 | MINUS_ONE, /* src_mask */ |
| 403 | MINUS_ONE, /* dst_mask */ |
| 404 | false), /* pcrel_offset */ |
| 405 | |
| 406 | /* A 32 bit GP relative offset. This is just like REFLONG except |
| 407 | that when the value is used the value of the gp register will be |
| 408 | added in. */ |
| 409 | HOWTO (R_ALPHA_GPREL32, /* type */ |
| 410 | 0, /* rightshift */ |
| 411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 412 | 32, /* bitsize */ |
| 413 | false, /* pc_relative */ |
| 414 | 0, /* bitpos */ |
| 415 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 416 | 0, /* special_function */ |
| 417 | "GPREL32", /* name */ |
| 418 | false, /* partial_inplace */ |
| 419 | 0xffffffff, /* src_mask */ |
| 420 | 0xffffffff, /* dst_mask */ |
| 421 | false), /* pcrel_offset */ |
| 422 | |
| 423 | /* Used for an instruction that refers to memory off the GP register. */ |
| 424 | HOWTO (R_ALPHA_LITERAL, /* 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 | 0, /* special_function */ |
| 432 | "ELF_LITERAL", /* name */ |
| 433 | false, /* partial_inplace */ |
| 434 | 0xffff, /* src_mask */ |
| 435 | 0xffff, /* dst_mask */ |
| 436 | false), /* pcrel_offset */ |
| 437 | |
| 438 | /* This reloc only appears immediately following an ELF_LITERAL reloc. |
| 439 | It identifies a use of the literal. The symbol index is special: |
| 440 | 1 means the literal address is in the base register of a memory |
| 441 | format instruction; 2 means the literal address is in the byte |
| 442 | offset register of a byte-manipulation instruction; 3 means the |
| 443 | literal address is in the target register of a jsr instruction. |
| 444 | This does not actually do any relocation. */ |
| 445 | HOWTO (R_ALPHA_LITUSE, /* type */ |
| 446 | 0, /* rightshift */ |
| 447 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 448 | 32, /* bitsize */ |
| 449 | false, /* pc_relative */ |
| 450 | 0, /* bitpos */ |
| 451 | complain_overflow_dont, /* complain_on_overflow */ |
| 452 | elf64_alpha_reloc_nil, /* special_function */ |
| 453 | "LITUSE", /* name */ |
| 454 | false, /* partial_inplace */ |
| 455 | 0, /* src_mask */ |
| 456 | 0, /* dst_mask */ |
| 457 | false), /* pcrel_offset */ |
| 458 | |
| 459 | /* Load the gp register. This is always used for a ldah instruction |
| 460 | which loads the upper 16 bits of the gp register. The symbol |
| 461 | index of the GPDISP instruction is an offset in bytes to the lda |
| 462 | instruction that loads the lower 16 bits. The value to use for |
| 463 | the relocation is the difference between the GP value and the |
| 464 | current location; the load will always be done against a register |
| 465 | holding the current address. |
| 466 | |
| 467 | NOTE: Unlike ECOFF, partial in-place relocation is not done. If |
| 468 | any offset is present in the instructions, it is an offset from |
| 469 | the register to the ldah instruction. This lets us avoid any |
| 470 | stupid hackery like inventing a gp value to do partial relocation |
| 471 | against. Also unlike ECOFF, we do the whole relocation off of |
| 472 | the GPDISP rather than a GPDISP_HI16/GPDISP_LO16 pair. An odd, |
| 473 | space consuming bit, that, since all the information was present |
| 474 | in the GPDISP_HI16 reloc. */ |
| 475 | HOWTO (R_ALPHA_GPDISP, /* type */ |
| 476 | 16, /* rightshift */ |
| 477 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 478 | 16, /* bitsize */ |
| 479 | false, /* pc_relative */ |
| 480 | 0, /* bitpos */ |
| 481 | complain_overflow_dont, /* complain_on_overflow */ |
| 482 | elf64_alpha_reloc_gpdisp, /* special_function */ |
| 483 | "GPDISP", /* name */ |
| 484 | false, /* partial_inplace */ |
| 485 | 0xffff, /* src_mask */ |
| 486 | 0xffff, /* dst_mask */ |
| 487 | true), /* pcrel_offset */ |
| 488 | |
| 489 | /* A 21 bit branch. */ |
| 490 | HOWTO (R_ALPHA_BRADDR, /* type */ |
| 491 | 2, /* rightshift */ |
| 492 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 493 | 21, /* bitsize */ |
| 494 | true, /* pc_relative */ |
| 495 | 0, /* bitpos */ |
| 496 | complain_overflow_signed, /* complain_on_overflow */ |
| 497 | 0, /* special_function */ |
| 498 | "BRADDR", /* name */ |
| 499 | false, /* partial_inplace */ |
| 500 | 0x1fffff, /* src_mask */ |
| 501 | 0x1fffff, /* dst_mask */ |
| 502 | true), /* pcrel_offset */ |
| 503 | |
| 504 | /* A hint for a jump to a register. */ |
| 505 | HOWTO (R_ALPHA_HINT, /* type */ |
| 506 | 2, /* rightshift */ |
| 507 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 508 | 14, /* bitsize */ |
| 509 | true, /* pc_relative */ |
| 510 | 0, /* bitpos */ |
| 511 | complain_overflow_dont, /* complain_on_overflow */ |
| 512 | 0, /* special_function */ |
| 513 | "HINT", /* name */ |
| 514 | false, /* partial_inplace */ |
| 515 | 0x3fff, /* src_mask */ |
| 516 | 0x3fff, /* dst_mask */ |
| 517 | true), /* pcrel_offset */ |
| 518 | |
| 519 | /* 16 bit PC relative offset. */ |
| 520 | HOWTO (R_ALPHA_SREL16, /* type */ |
| 521 | 0, /* rightshift */ |
| 522 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 523 | 16, /* bitsize */ |
| 524 | true, /* pc_relative */ |
| 525 | 0, /* bitpos */ |
| 526 | complain_overflow_signed, /* complain_on_overflow */ |
| 527 | 0, /* special_function */ |
| 528 | "SREL16", /* name */ |
| 529 | false, /* partial_inplace */ |
| 530 | 0xffff, /* src_mask */ |
| 531 | 0xffff, /* dst_mask */ |
| 532 | false), /* pcrel_offset */ |
| 533 | |
| 534 | /* 32 bit PC relative offset. */ |
| 535 | HOWTO (R_ALPHA_SREL32, /* type */ |
| 536 | 0, /* rightshift */ |
| 537 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 538 | 32, /* bitsize */ |
| 539 | true, /* pc_relative */ |
| 540 | 0, /* bitpos */ |
| 541 | complain_overflow_signed, /* complain_on_overflow */ |
| 542 | 0, /* special_function */ |
| 543 | "SREL32", /* name */ |
| 544 | false, /* partial_inplace */ |
| 545 | 0xffffffff, /* src_mask */ |
| 546 | 0xffffffff, /* dst_mask */ |
| 547 | false), /* pcrel_offset */ |
| 548 | |
| 549 | /* A 64 bit PC relative offset. */ |
| 550 | HOWTO (R_ALPHA_SREL64, /* type */ |
| 551 | 0, /* rightshift */ |
| 552 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 553 | 64, /* bitsize */ |
| 554 | true, /* pc_relative */ |
| 555 | 0, /* bitpos */ |
| 556 | complain_overflow_signed, /* complain_on_overflow */ |
| 557 | 0, /* special_function */ |
| 558 | "SREL64", /* name */ |
| 559 | false, /* partial_inplace */ |
| 560 | MINUS_ONE, /* src_mask */ |
| 561 | MINUS_ONE, /* dst_mask */ |
| 562 | false), /* pcrel_offset */ |
| 563 | |
| 564 | /* Push a value on the reloc evaluation stack. */ |
| 565 | /* Not implemented -- it's dumb. */ |
| 566 | HOWTO (R_ALPHA_OP_PUSH, /* type */ |
| 567 | 0, /* rightshift */ |
| 568 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 569 | 0, /* bitsize */ |
| 570 | false, /* pc_relative */ |
| 571 | 0, /* bitpos */ |
| 572 | complain_overflow_dont, /* complain_on_overflow */ |
| 573 | elf64_alpha_reloc_bad, /* special_function */ |
| 574 | "OP_PUSH", /* name */ |
| 575 | false, /* partial_inplace */ |
| 576 | 0, /* src_mask */ |
| 577 | 0, /* dst_mask */ |
| 578 | false), /* pcrel_offset */ |
| 579 | |
| 580 | /* Store the value from the stack at the given address. Store it in |
| 581 | a bitfield of size r_size starting at bit position r_offset. */ |
| 582 | /* Not implemented -- it's dumb. */ |
| 583 | HOWTO (R_ALPHA_OP_STORE, /* type */ |
| 584 | 0, /* rightshift */ |
| 585 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 586 | 64, /* bitsize */ |
| 587 | false, /* pc_relative */ |
| 588 | 0, /* bitpos */ |
| 589 | complain_overflow_dont, /* complain_on_overflow */ |
| 590 | elf64_alpha_reloc_bad, /* special_function */ |
| 591 | "OP_STORE", /* name */ |
| 592 | false, /* partial_inplace */ |
| 593 | 0, /* src_mask */ |
| 594 | MINUS_ONE, /* dst_mask */ |
| 595 | false), /* pcrel_offset */ |
| 596 | |
| 597 | /* Subtract the reloc address from the value on the top of the |
| 598 | relocation stack. */ |
| 599 | /* Not implemented -- it's dumb. */ |
| 600 | HOWTO (R_ALPHA_OP_PSUB, /* type */ |
| 601 | 0, /* rightshift */ |
| 602 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 603 | 0, /* bitsize */ |
| 604 | false, /* pc_relative */ |
| 605 | 0, /* bitpos */ |
| 606 | complain_overflow_dont, /* complain_on_overflow */ |
| 607 | elf64_alpha_reloc_bad, /* special_function */ |
| 608 | "OP_PSUB", /* name */ |
| 609 | false, /* partial_inplace */ |
| 610 | 0, /* src_mask */ |
| 611 | 0, /* dst_mask */ |
| 612 | false), /* pcrel_offset */ |
| 613 | |
| 614 | /* Shift the value on the top of the relocation stack right by the |
| 615 | given value. */ |
| 616 | /* Not implemented -- it's dumb. */ |
| 617 | HOWTO (R_ALPHA_OP_PRSHIFT, /* type */ |
| 618 | 0, /* rightshift */ |
| 619 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 620 | 0, /* bitsize */ |
| 621 | false, /* pc_relative */ |
| 622 | 0, /* bitpos */ |
| 623 | complain_overflow_dont, /* complain_on_overflow */ |
| 624 | elf64_alpha_reloc_bad, /* special_function */ |
| 625 | "OP_PRSHIFT", /* name */ |
| 626 | false, /* partial_inplace */ |
| 627 | 0, /* src_mask */ |
| 628 | 0, /* dst_mask */ |
| 629 | false), /* pcrel_offset */ |
| 630 | |
| 631 | /* Change the value of GP used by +r_addend until the next GPVALUE or the |
| 632 | end of the input bfd. */ |
| 633 | /* Not implemented -- it's dumb. */ |
| 634 | HOWTO (R_ALPHA_GPVALUE, |
| 635 | 0, /* rightshift */ |
| 636 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 637 | 0, /* bitsize */ |
| 638 | false, /* pc_relative */ |
| 639 | 0, /* bitpos */ |
| 640 | complain_overflow_dont, /* complain_on_overflow */ |
| 641 | elf64_alpha_reloc_bad, /* special_function */ |
| 642 | "GPVALUE", /* name */ |
| 643 | false, /* partial_inplace */ |
| 644 | 0, /* src_mask */ |
| 645 | 0, /* dst_mask */ |
| 646 | false), /* pcrel_offset */ |
| 647 | |
| 648 | /* The high 16 bits of the displacement from GP to the target. */ |
| 649 | HOWTO (R_ALPHA_GPRELHIGH, |
| 650 | 0, /* rightshift */ |
| 651 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 652 | 16, /* bitsize */ |
| 653 | false, /* pc_relative */ |
| 654 | 0, /* bitpos */ |
| 655 | complain_overflow_signed, /* complain_on_overflow */ |
| 656 | elf64_alpha_reloc_bad, /* special_function */ |
| 657 | "GPRELHIGH", /* name */ |
| 658 | false, /* partial_inplace */ |
| 659 | 0xffff, /* src_mask */ |
| 660 | 0xffff, /* dst_mask */ |
| 661 | false), /* pcrel_offset */ |
| 662 | |
| 663 | /* The low 16 bits of the displacement from GP to the target. */ |
| 664 | HOWTO (R_ALPHA_GPRELLOW, |
| 665 | 0, /* rightshift */ |
| 666 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 667 | 16, /* bitsize */ |
| 668 | false, /* pc_relative */ |
| 669 | 0, /* bitpos */ |
| 670 | complain_overflow_dont, /* complain_on_overflow */ |
| 671 | elf64_alpha_reloc_bad, /* special_function */ |
| 672 | "GPRELLOW", /* name */ |
| 673 | false, /* partial_inplace */ |
| 674 | 0xffff, /* src_mask */ |
| 675 | 0xffff, /* dst_mask */ |
| 676 | false), /* pcrel_offset */ |
| 677 | |
| 678 | /* A 16-bit displacement from the GP to the target. */ |
| 679 | /* XXX: Not implemented. */ |
| 680 | HOWTO (R_ALPHA_IMMED_GP_16, |
| 681 | 0, /* rightshift */ |
| 682 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 683 | 16, /* bitsize */ |
| 684 | false, /* pc_relative */ |
| 685 | 0, /* bitpos */ |
| 686 | complain_overflow_signed, /* complain_on_overflow */ |
| 687 | 0, /* special_function */ |
| 688 | "IMMED_GP_16", /* name */ |
| 689 | false, /* partial_inplace */ |
| 690 | 0xffff, /* src_mask */ |
| 691 | 0xffff, /* dst_mask */ |
| 692 | false), /* pcrel_offset */ |
| 693 | |
| 694 | /* The high bits of a 32-bit displacement from the GP to the target; the |
| 695 | low bits are supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */ |
| 696 | /* XXX: Not implemented. */ |
| 697 | HOWTO (R_ALPHA_IMMED_GP_HI32, |
| 698 | 0, /* rightshift */ |
| 699 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 700 | 0, /* bitsize */ |
| 701 | false, /* pc_relative */ |
| 702 | 0, /* bitpos */ |
| 703 | complain_overflow_dont, /* complain_on_overflow */ |
| 704 | elf64_alpha_reloc_bad, /* special_function */ |
| 705 | "IMMED_GP_HI32", /* name */ |
| 706 | false, /* partial_inplace */ |
| 707 | 0, /* src_mask */ |
| 708 | 0, /* dst_mask */ |
| 709 | false), /* pcrel_offset */ |
| 710 | |
| 711 | /* The high bits of a 32-bit displacement to the starting address of the |
| 712 | current section (the relocation target is ignored); the low bits are |
| 713 | supplied in the subsequent R_ALPHA_IMMED_LO32 relocs. */ |
| 714 | /* XXX: Not implemented. */ |
| 715 | HOWTO (R_ALPHA_IMMED_SCN_HI32, |
| 716 | 0, /* rightshift */ |
| 717 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 718 | 0, /* bitsize */ |
| 719 | false, /* pc_relative */ |
| 720 | 0, /* bitpos */ |
| 721 | complain_overflow_dont, /* complain_on_overflow */ |
| 722 | elf64_alpha_reloc_bad, /* special_function */ |
| 723 | "IMMED_SCN_HI32", /* name */ |
| 724 | false, /* partial_inplace */ |
| 725 | 0, /* src_mask */ |
| 726 | 0, /* dst_mask */ |
| 727 | false), /* pcrel_offset */ |
| 728 | |
| 729 | /* The high bits of a 32-bit displacement from the previous br, bsr, jsr |
| 730 | or jmp insn (as tagged by a BRADDR or HINT reloc) to the target; the |
| 731 | low bits are supplied by subsequent R_ALPHA_IMMED_LO32 relocs. */ |
| 732 | /* XXX: Not implemented. */ |
| 733 | HOWTO (R_ALPHA_IMMED_BR_HI32, |
| 734 | 0, /* rightshift */ |
| 735 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 736 | 0, /* bitsize */ |
| 737 | false, /* pc_relative */ |
| 738 | 0, /* bitpos */ |
| 739 | complain_overflow_dont, /* complain_on_overflow */ |
| 740 | elf64_alpha_reloc_bad, /* special_function */ |
| 741 | "IMMED_BR_HI32", /* name */ |
| 742 | false, /* partial_inplace */ |
| 743 | 0, /* src_mask */ |
| 744 | 0, /* dst_mask */ |
| 745 | false), /* pcrel_offset */ |
| 746 | |
| 747 | /* The low 16 bits of a displacement calculated in a previous HI32 reloc. */ |
| 748 | /* XXX: Not implemented. */ |
| 749 | HOWTO (R_ALPHA_IMMED_LO32, |
| 750 | 0, /* rightshift */ |
| 751 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 752 | 0, /* bitsize */ |
| 753 | false, /* pc_relative */ |
| 754 | 0, /* bitpos */ |
| 755 | complain_overflow_dont, /* complain_on_overflow */ |
| 756 | elf64_alpha_reloc_bad, /* special_function */ |
| 757 | "IMMED_LO32", /* name */ |
| 758 | false, /* partial_inplace */ |
| 759 | 0, /* src_mask */ |
| 760 | 0, /* dst_mask */ |
| 761 | false), /* pcrel_offset */ |
| 762 | |
| 763 | /* Misc ELF relocations. */ |
| 764 | |
| 765 | /* A dynamic relocation to copy the target into our .dynbss section. */ |
| 766 | /* Not generated, as all Alpha objects use PIC, so it is not needed. It |
| 767 | is present because every other ELF has one, but should not be used |
| 768 | because .dynbss is an ugly thing. */ |
| 769 | HOWTO (R_ALPHA_COPY, |
| 770 | 0, |
| 771 | 0, |
| 772 | 0, |
| 773 | false, |
| 774 | 0, |
| 775 | complain_overflow_dont, |
| 776 | bfd_elf_generic_reloc, |
| 777 | "COPY", |
| 778 | false, |
| 779 | 0, |
| 780 | 0, |
| 781 | true), |
| 782 | |
| 783 | /* A dynamic relocation for a .got entry. */ |
| 784 | HOWTO (R_ALPHA_GLOB_DAT, |
| 785 | 0, |
| 786 | 0, |
| 787 | 0, |
| 788 | false, |
| 789 | 0, |
| 790 | complain_overflow_dont, |
| 791 | bfd_elf_generic_reloc, |
| 792 | "GLOB_DAT", |
| 793 | false, |
| 794 | 0, |
| 795 | 0, |
| 796 | true), |
| 797 | |
| 798 | /* A dynamic relocation for a .plt entry. */ |
| 799 | HOWTO (R_ALPHA_JMP_SLOT, |
| 800 | 0, |
| 801 | 0, |
| 802 | 0, |
| 803 | false, |
| 804 | 0, |
| 805 | complain_overflow_dont, |
| 806 | bfd_elf_generic_reloc, |
| 807 | "JMP_SLOT", |
| 808 | false, |
| 809 | 0, |
| 810 | 0, |
| 811 | true), |
| 812 | |
| 813 | /* A dynamic relocation to add the base of the DSO to a 64-bit field. */ |
| 814 | HOWTO (R_ALPHA_RELATIVE, |
| 815 | 0, |
| 816 | 0, |
| 817 | 0, |
| 818 | false, |
| 819 | 0, |
| 820 | complain_overflow_dont, |
| 821 | bfd_elf_generic_reloc, |
| 822 | "RELATIVE", |
| 823 | false, |
| 824 | 0, |
| 825 | 0, |
| 826 | true) |
| 827 | }; |
| 828 | |
| 829 | /* A relocation function which doesn't do anything. */ |
| 830 | |
| 831 | static bfd_reloc_status_type |
| 832 | elf64_alpha_reloc_nil (abfd, reloc, sym, data, sec, output_bfd, error_message) |
| 833 | bfd *abfd; |
| 834 | arelent *reloc; |
| 835 | asymbol *sym; |
| 836 | PTR data; |
| 837 | asection *sec; |
| 838 | bfd *output_bfd; |
| 839 | char **error_message; |
| 840 | { |
| 841 | if (output_bfd) |
| 842 | reloc->address += sec->output_offset; |
| 843 | return bfd_reloc_ok; |
| 844 | } |
| 845 | |
| 846 | /* A relocation function used for an unsupported reloc. */ |
| 847 | |
| 848 | static bfd_reloc_status_type |
| 849 | elf64_alpha_reloc_bad (abfd, reloc, sym, data, sec, output_bfd, error_message) |
| 850 | bfd *abfd; |
| 851 | arelent *reloc; |
| 852 | asymbol *sym; |
| 853 | PTR data; |
| 854 | asection *sec; |
| 855 | bfd *output_bfd; |
| 856 | char **error_message; |
| 857 | { |
| 858 | if (output_bfd) |
| 859 | reloc->address += sec->output_offset; |
| 860 | return bfd_reloc_notsupported; |
| 861 | } |
| 862 | |
| 863 | /* Do the work of the GPDISP relocation. */ |
| 864 | |
| 865 | static bfd_reloc_status_type |
| 866 | elf64_alpha_do_reloc_gpdisp (abfd, gpdisp, p_ldah, p_lda) |
| 867 | bfd *abfd; |
| 868 | bfd_vma gpdisp; |
| 869 | bfd_byte *p_ldah; |
| 870 | bfd_byte *p_lda; |
| 871 | { |
| 872 | bfd_reloc_status_type ret = bfd_reloc_ok; |
| 873 | bfd_vma addend; |
| 874 | unsigned long i_ldah, i_lda; |
| 875 | |
| 876 | i_ldah = bfd_get_32 (abfd, p_ldah); |
| 877 | i_lda = bfd_get_32 (abfd, p_lda); |
| 878 | |
| 879 | /* Complain if the instructions are not correct. */ |
| 880 | if (((i_ldah >> 26) & 0x3f) != 0x09 |
| 881 | || ((i_lda >> 26) & 0x3f) != 0x08) |
| 882 | ret = bfd_reloc_dangerous; |
| 883 | |
| 884 | /* Extract the user-supplied offset, mirroring the sign extensions |
| 885 | that the instructions perform. */ |
| 886 | addend = ((i_ldah & 0xffff) << 16) | (i_lda & 0xffff); |
| 887 | addend = (addend ^ 0x80008000) - 0x80008000; |
| 888 | |
| 889 | gpdisp += addend; |
| 890 | |
| 891 | if ((bfd_signed_vma) gpdisp < -(bfd_signed_vma) 0x80000000 |
| 892 | || (bfd_signed_vma) gpdisp >= (bfd_signed_vma) 0x7fff8000) |
| 893 | ret = bfd_reloc_overflow; |
| 894 | |
| 895 | /* compensate for the sign extension again. */ |
| 896 | i_ldah = ((i_ldah & 0xffff0000) |
| 897 | | (((gpdisp >> 16) + ((gpdisp >> 15) & 1)) & 0xffff)); |
| 898 | i_lda = (i_lda & 0xffff0000) | (gpdisp & 0xffff); |
| 899 | |
| 900 | bfd_put_32 (abfd, i_ldah, p_ldah); |
| 901 | bfd_put_32 (abfd, i_lda, p_lda); |
| 902 | |
| 903 | return ret; |
| 904 | } |
| 905 | |
| 906 | /* The special function for the GPDISP reloc. */ |
| 907 | |
| 908 | static bfd_reloc_status_type |
| 909 | elf64_alpha_reloc_gpdisp (abfd, reloc_entry, sym, data, input_section, |
| 910 | output_bfd, err_msg) |
| 911 | bfd *abfd; |
| 912 | arelent *reloc_entry; |
| 913 | asymbol *sym; |
| 914 | PTR data; |
| 915 | asection *input_section; |
| 916 | bfd *output_bfd; |
| 917 | char **err_msg; |
| 918 | { |
| 919 | bfd_reloc_status_type ret; |
| 920 | bfd_vma gp, relocation; |
| 921 | bfd_byte *p_ldah, *p_lda; |
| 922 | |
| 923 | /* Don't do anything if we're not doing a final link. */ |
| 924 | if (output_bfd) |
| 925 | { |
| 926 | reloc_entry->address += input_section->output_offset; |
| 927 | return bfd_reloc_ok; |
| 928 | } |
| 929 | |
| 930 | if (reloc_entry->address > input_section->_cooked_size || |
| 931 | reloc_entry->address + reloc_entry->addend > input_section->_cooked_size) |
| 932 | return bfd_reloc_outofrange; |
| 933 | |
| 934 | /* The gp used in the portion of the output object to which this |
| 935 | input object belongs is cached on the input bfd. */ |
| 936 | gp = _bfd_get_gp_value (abfd); |
| 937 | |
| 938 | relocation = (input_section->output_section->vma |
| 939 | + input_section->output_offset |
| 940 | + reloc_entry->address); |
| 941 | |
| 942 | p_ldah = (bfd_byte *) data + reloc_entry->address; |
| 943 | p_lda = p_ldah + reloc_entry->addend; |
| 944 | |
| 945 | ret = elf64_alpha_do_reloc_gpdisp (abfd, gp - relocation, p_ldah, p_lda); |
| 946 | |
| 947 | /* Complain if the instructions are not correct. */ |
| 948 | if (ret == bfd_reloc_dangerous) |
| 949 | *err_msg = _("GPDISP relocation did not find ldah and lda instructions"); |
| 950 | |
| 951 | return ret; |
| 952 | } |
| 953 | |
| 954 | /* A mapping from BFD reloc types to Alpha ELF reloc types. */ |
| 955 | |
| 956 | struct elf_reloc_map |
| 957 | { |
| 958 | bfd_reloc_code_real_type bfd_reloc_val; |
| 959 | int elf_reloc_val; |
| 960 | }; |
| 961 | |
| 962 | static const struct elf_reloc_map elf64_alpha_reloc_map[] = |
| 963 | { |
| 964 | {BFD_RELOC_NONE, R_ALPHA_NONE}, |
| 965 | {BFD_RELOC_32, R_ALPHA_REFLONG}, |
| 966 | {BFD_RELOC_64, R_ALPHA_REFQUAD}, |
| 967 | {BFD_RELOC_CTOR, R_ALPHA_REFQUAD}, |
| 968 | {BFD_RELOC_GPREL32, R_ALPHA_GPREL32}, |
| 969 | {BFD_RELOC_ALPHA_ELF_LITERAL, R_ALPHA_LITERAL}, |
| 970 | {BFD_RELOC_ALPHA_LITUSE, R_ALPHA_LITUSE}, |
| 971 | {BFD_RELOC_ALPHA_GPDISP, R_ALPHA_GPDISP}, |
| 972 | {BFD_RELOC_23_PCREL_S2, R_ALPHA_BRADDR}, |
| 973 | {BFD_RELOC_ALPHA_HINT, R_ALPHA_HINT}, |
| 974 | {BFD_RELOC_16_PCREL, R_ALPHA_SREL16}, |
| 975 | {BFD_RELOC_32_PCREL, R_ALPHA_SREL32}, |
| 976 | {BFD_RELOC_64_PCREL, R_ALPHA_SREL64}, |
| 977 | }; |
| 978 | |
| 979 | /* Given a BFD reloc type, return a HOWTO structure. */ |
| 980 | |
| 981 | static reloc_howto_type * |
| 982 | elf64_alpha_bfd_reloc_type_lookup (abfd, code) |
| 983 | bfd *abfd; |
| 984 | bfd_reloc_code_real_type code; |
| 985 | { |
| 986 | const struct elf_reloc_map *i, *e; |
| 987 | i = e = elf64_alpha_reloc_map; |
| 988 | e += sizeof (elf64_alpha_reloc_map) / sizeof (struct elf_reloc_map); |
| 989 | for (; i != e; ++i) |
| 990 | { |
| 991 | if (i->bfd_reloc_val == code) |
| 992 | return &elf64_alpha_howto_table[i->elf_reloc_val]; |
| 993 | } |
| 994 | return 0; |
| 995 | } |
| 996 | |
| 997 | /* Given an Alpha ELF reloc type, fill in an arelent structure. */ |
| 998 | |
| 999 | static void |
| 1000 | elf64_alpha_info_to_howto (abfd, cache_ptr, dst) |
| 1001 | bfd *abfd; |
| 1002 | arelent *cache_ptr; |
| 1003 | Elf64_Internal_Rela *dst; |
| 1004 | { |
| 1005 | unsigned r_type; |
| 1006 | |
| 1007 | r_type = ELF64_R_TYPE(dst->r_info); |
| 1008 | BFD_ASSERT (r_type < (unsigned int) R_ALPHA_max); |
| 1009 | cache_ptr->howto = &elf64_alpha_howto_table[r_type]; |
| 1010 | } |
| 1011 | \f |
| 1012 | /* These functions do relaxation for Alpha ELF. |
| 1013 | |
| 1014 | Currently I'm only handling what I can do with existing compiler |
| 1015 | and assembler support, which means no instructions are removed, |
| 1016 | though some may be nopped. At this time GCC does not emit enough |
| 1017 | information to do all of the relaxing that is possible. It will |
| 1018 | take some not small amount of work for that to happen. |
| 1019 | |
| 1020 | There are a couple of interesting papers that I once read on this |
| 1021 | subject, that I cannot find references to at the moment, that |
| 1022 | related to Alpha in particular. They are by David Wall, then of |
| 1023 | DEC WRL. */ |
| 1024 | |
| 1025 | #define OP_LDA 0x08 |
| 1026 | #define OP_LDAH 0x09 |
| 1027 | #define INSN_JSR 0x68004000 |
| 1028 | #define INSN_JSR_MASK 0xfc00c000 |
| 1029 | #define OP_LDQ 0x29 |
| 1030 | #define OP_BR 0x30 |
| 1031 | #define OP_BSR 0x34 |
| 1032 | #define INSN_UNOP 0x2fe00000 |
| 1033 | |
| 1034 | struct alpha_relax_info |
| 1035 | { |
| 1036 | bfd *abfd; |
| 1037 | asection *sec; |
| 1038 | bfd_byte *contents; |
| 1039 | Elf_Internal_Rela *relocs, *relend; |
| 1040 | struct bfd_link_info *link_info; |
| 1041 | boolean changed_contents; |
| 1042 | boolean changed_relocs; |
| 1043 | bfd_vma gp; |
| 1044 | bfd *gotobj; |
| 1045 | asection *tsec; |
| 1046 | struct alpha_elf_link_hash_entry *h; |
| 1047 | struct alpha_elf_got_entry *gotent; |
| 1048 | unsigned char other; |
| 1049 | }; |
| 1050 | |
| 1051 | static Elf_Internal_Rela * elf64_alpha_relax_with_lituse |
| 1052 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
| 1053 | Elf_Internal_Rela *irel, Elf_Internal_Rela *irelend)); |
| 1054 | |
| 1055 | static boolean elf64_alpha_relax_without_lituse |
| 1056 | PARAMS((struct alpha_relax_info *info, bfd_vma symval, |
| 1057 | Elf_Internal_Rela *irel)); |
| 1058 | |
| 1059 | static bfd_vma elf64_alpha_relax_opt_call |
| 1060 | PARAMS((struct alpha_relax_info *info, bfd_vma symval)); |
| 1061 | |
| 1062 | static boolean elf64_alpha_relax_section |
| 1063 | PARAMS((bfd *abfd, asection *sec, struct bfd_link_info *link_info, |
| 1064 | boolean *again)); |
| 1065 | |
| 1066 | static Elf_Internal_Rela * |
| 1067 | elf64_alpha_find_reloc_at_ofs (rel, relend, offset, type) |
| 1068 | Elf_Internal_Rela *rel, *relend; |
| 1069 | bfd_vma offset; |
| 1070 | int type; |
| 1071 | { |
| 1072 | while (rel < relend) |
| 1073 | { |
| 1074 | if (rel->r_offset == offset && ELF64_R_TYPE (rel->r_info) == type) |
| 1075 | return rel; |
| 1076 | ++rel; |
| 1077 | } |
| 1078 | return NULL; |
| 1079 | } |
| 1080 | |
| 1081 | static Elf_Internal_Rela * |
| 1082 | elf64_alpha_relax_with_lituse (info, symval, irel, irelend) |
| 1083 | struct alpha_relax_info *info; |
| 1084 | bfd_vma symval; |
| 1085 | Elf_Internal_Rela *irel, *irelend; |
| 1086 | { |
| 1087 | Elf_Internal_Rela *urel; |
| 1088 | int flags, count, i; |
| 1089 | bfd_signed_vma disp; |
| 1090 | boolean fits16; |
| 1091 | boolean fits32; |
| 1092 | boolean lit_reused = false; |
| 1093 | boolean all_optimized = true; |
| 1094 | unsigned int lit_insn; |
| 1095 | |
| 1096 | lit_insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
| 1097 | if (lit_insn >> 26 != OP_LDQ) |
| 1098 | { |
| 1099 | ((*_bfd_error_handler) |
| 1100 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", |
| 1101 | bfd_get_filename (info->abfd), info->sec->name, |
| 1102 | (unsigned long)irel->r_offset)); |
| 1103 | return irel; |
| 1104 | } |
| 1105 | |
| 1106 | /* Summarize how this particular LITERAL is used. */ |
| 1107 | for (urel = irel+1, flags = count = 0; urel < irelend; ++urel, ++count) |
| 1108 | { |
| 1109 | if (ELF64_R_TYPE (urel->r_info) != R_ALPHA_LITUSE) |
| 1110 | break; |
| 1111 | if (urel->r_addend >= 0 && urel->r_addend <= 3) |
| 1112 | flags |= 1 << urel->r_addend; |
| 1113 | } |
| 1114 | |
| 1115 | /* A little preparation for the loop... */ |
| 1116 | disp = symval - info->gp; |
| 1117 | fits16 = (disp >= -(bfd_signed_vma)0x8000 && disp < 0x8000); |
| 1118 | fits32 = (disp >= -(bfd_signed_vma)0x80000000 && disp < 0x7fff8000); |
| 1119 | |
| 1120 | for (urel = irel+1, i = 0; i < count; ++i, ++urel) |
| 1121 | { |
| 1122 | unsigned int insn; |
| 1123 | insn = bfd_get_32 (info->abfd, info->contents + urel->r_offset); |
| 1124 | |
| 1125 | switch (urel->r_addend) |
| 1126 | { |
| 1127 | default: /* 0 = ADDRESS FORMAT */ |
| 1128 | /* This type is really just a placeholder to note that all |
| 1129 | uses cannot be optimized, but to still allow some. */ |
| 1130 | all_optimized = false; |
| 1131 | break; |
| 1132 | |
| 1133 | case 1: /* MEM FORMAT */ |
| 1134 | /* We can always optimize 16-bit displacements. */ |
| 1135 | if (fits16) |
| 1136 | { |
| 1137 | /* FIXME: sanity check the insn for mem format with |
| 1138 | zero addend. */ |
| 1139 | |
| 1140 | /* Take the op code and dest from this insn, take the base |
| 1141 | register from the literal insn. Leave the offset alone. */ |
| 1142 | insn = (insn & 0xffe00000) | (lit_insn & 0x001f0000); |
| 1143 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 1144 | R_ALPHA_GPRELLOW); |
| 1145 | urel->r_addend = irel->r_addend; |
| 1146 | info->changed_relocs = true; |
| 1147 | |
| 1148 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); |
| 1149 | info->changed_contents = true; |
| 1150 | } |
| 1151 | |
| 1152 | /* If all mem+byte, we can optimize 32-bit mem displacements. */ |
| 1153 | else if (fits32 && !(flags & ~6)) |
| 1154 | { |
| 1155 | /* FIXME: sanity check that lit insn Ra is mem insn Rb, and |
| 1156 | that mem_insn disp is zero. */ |
| 1157 | |
| 1158 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 1159 | R_ALPHA_GPRELHIGH); |
| 1160 | lit_insn = (OP_LDAH << 26) | (lit_insn & 0x03ff0000); |
| 1161 | bfd_put_32 (info->abfd, lit_insn, |
| 1162 | info->contents + irel->r_offset); |
| 1163 | lit_reused = true; |
| 1164 | info->changed_contents = true; |
| 1165 | |
| 1166 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 1167 | R_ALPHA_GPRELLOW); |
| 1168 | urel->r_addend = irel->r_addend; |
| 1169 | info->changed_relocs = true; |
| 1170 | } |
| 1171 | else |
| 1172 | all_optimized = false; |
| 1173 | break; |
| 1174 | |
| 1175 | case 2: /* BYTE OFFSET FORMAT */ |
| 1176 | /* We can always optimize byte instructions. */ |
| 1177 | |
| 1178 | /* FIXME: sanity check the insn for byte op. Check that the |
| 1179 | literal dest reg is indeed Rb in the byte insn. */ |
| 1180 | |
| 1181 | insn = (insn & ~0x001ff000) | ((symval & 7) << 13) | 0x1000; |
| 1182 | |
| 1183 | urel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
| 1184 | urel->r_addend = 0; |
| 1185 | info->changed_relocs = true; |
| 1186 | |
| 1187 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); |
| 1188 | info->changed_contents = true; |
| 1189 | break; |
| 1190 | |
| 1191 | case 3: /* CALL FORMAT */ |
| 1192 | { |
| 1193 | /* If not zero, place to jump without needing pv. */ |
| 1194 | bfd_vma optdest = elf64_alpha_relax_opt_call (info, symval); |
| 1195 | bfd_vma org = (info->sec->output_section->vma |
| 1196 | + info->sec->output_offset |
| 1197 | + urel->r_offset + 4); |
| 1198 | bfd_signed_vma odisp; |
| 1199 | |
| 1200 | odisp = (optdest ? optdest : symval) - org; |
| 1201 | if (odisp >= -0x400000 && odisp < 0x400000) |
| 1202 | { |
| 1203 | Elf_Internal_Rela *xrel; |
| 1204 | |
| 1205 | /* Preserve branch prediction call stack when possible. */ |
| 1206 | if ((insn & INSN_JSR_MASK) == INSN_JSR) |
| 1207 | insn = (OP_BSR << 26) | (insn & 0x03e00000); |
| 1208 | else |
| 1209 | insn = (OP_BR << 26) | (insn & 0x03e00000); |
| 1210 | |
| 1211 | urel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), |
| 1212 | R_ALPHA_BRADDR); |
| 1213 | urel->r_addend = irel->r_addend; |
| 1214 | |
| 1215 | if (optdest) |
| 1216 | urel->r_addend += optdest - symval; |
| 1217 | else |
| 1218 | all_optimized = false; |
| 1219 | |
| 1220 | bfd_put_32 (info->abfd, insn, info->contents + urel->r_offset); |
| 1221 | |
| 1222 | /* Kill any HINT reloc that might exist for this insn. */ |
| 1223 | xrel = (elf64_alpha_find_reloc_at_ofs |
| 1224 | (info->relocs, info->relend, urel->r_offset, |
| 1225 | R_ALPHA_HINT)); |
| 1226 | if (xrel) |
| 1227 | xrel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
| 1228 | |
| 1229 | info->changed_contents = true; |
| 1230 | info->changed_relocs = true; |
| 1231 | } |
| 1232 | else |
| 1233 | all_optimized = false; |
| 1234 | |
| 1235 | /* ??? If target gp == current gp we can eliminate the gp reload. |
| 1236 | This does depend on every place a gp could be reloaded will |
| 1237 | be, which currently happens for all code produced by gcc, but |
| 1238 | not necessarily by hand-coded assembly, or if sibling calls |
| 1239 | are enabled in gcc. |
| 1240 | |
| 1241 | Perhaps conditionalize this on a flag being set in the target |
| 1242 | object file's header, and have gcc set it? */ |
| 1243 | } |
| 1244 | break; |
| 1245 | } |
| 1246 | } |
| 1247 | |
| 1248 | /* If all cases were optimized, we can reduce the use count on this |
| 1249 | got entry by one, possibly eliminating it. */ |
| 1250 | if (all_optimized) |
| 1251 | { |
| 1252 | info->gotent->use_count -= 1; |
| 1253 | alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; |
| 1254 | if (!info->h) |
| 1255 | alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; |
| 1256 | |
| 1257 | /* If the literal instruction is no longer needed (it may have been |
| 1258 | reused. We can eliminate it. |
| 1259 | ??? For now, I don't want to deal with compacting the section, |
| 1260 | so just nop it out. */ |
| 1261 | if (!lit_reused) |
| 1262 | { |
| 1263 | irel->r_info = ELF64_R_INFO (0, R_ALPHA_NONE); |
| 1264 | info->changed_relocs = true; |
| 1265 | |
| 1266 | bfd_put_32 (info->abfd, INSN_UNOP, info->contents + irel->r_offset); |
| 1267 | info->changed_contents = true; |
| 1268 | } |
| 1269 | } |
| 1270 | |
| 1271 | return irel + count; |
| 1272 | } |
| 1273 | |
| 1274 | static bfd_vma |
| 1275 | elf64_alpha_relax_opt_call (info, symval) |
| 1276 | struct alpha_relax_info *info; |
| 1277 | bfd_vma symval; |
| 1278 | { |
| 1279 | /* If the function has the same gp, and we can identify that the |
| 1280 | function does not use its function pointer, we can eliminate the |
| 1281 | address load. */ |
| 1282 | |
| 1283 | /* If the symbol is marked NOPV, we are being told the function never |
| 1284 | needs its procedure value. */ |
| 1285 | if (info->other == STO_ALPHA_NOPV) |
| 1286 | return symval; |
| 1287 | |
| 1288 | /* If the symbol is marked STD_GP, we are being told the function does |
| 1289 | a normal ldgp in the first two words. */ |
| 1290 | else if (info->other == STO_ALPHA_STD_GPLOAD) |
| 1291 | ; |
| 1292 | |
| 1293 | /* Otherwise, we may be able to identify a GP load in the first two |
| 1294 | words, which we can then skip. */ |
| 1295 | else |
| 1296 | { |
| 1297 | Elf_Internal_Rela *tsec_relocs, *tsec_relend, *tsec_free, *gpdisp; |
| 1298 | bfd_vma ofs; |
| 1299 | |
| 1300 | /* Load the relocations from the section that the target symbol is in. */ |
| 1301 | if (info->sec == info->tsec) |
| 1302 | { |
| 1303 | tsec_relocs = info->relocs; |
| 1304 | tsec_relend = info->relend; |
| 1305 | tsec_free = NULL; |
| 1306 | } |
| 1307 | else |
| 1308 | { |
| 1309 | tsec_relocs = (_bfd_elf64_link_read_relocs |
| 1310 | (info->abfd, info->tsec, (PTR) NULL, |
| 1311 | (Elf_Internal_Rela *) NULL, |
| 1312 | info->link_info->keep_memory)); |
| 1313 | if (tsec_relocs == NULL) |
| 1314 | return 0; |
| 1315 | tsec_relend = tsec_relocs + info->tsec->reloc_count; |
| 1316 | tsec_free = (info->link_info->keep_memory ? NULL : tsec_relocs); |
| 1317 | } |
| 1318 | |
| 1319 | /* Recover the symbol's offset within the section. */ |
| 1320 | ofs = (symval - info->tsec->output_section->vma |
| 1321 | - info->tsec->output_offset); |
| 1322 | |
| 1323 | /* Look for a GPDISP reloc. */ |
| 1324 | gpdisp = (elf64_alpha_find_reloc_at_ofs |
| 1325 | (tsec_relocs, tsec_relend, ofs, R_ALPHA_GPDISP)); |
| 1326 | |
| 1327 | if (!gpdisp || gpdisp->r_addend != 4) |
| 1328 | { |
| 1329 | if (tsec_free) |
| 1330 | free (tsec_free); |
| 1331 | return 0; |
| 1332 | } |
| 1333 | if (tsec_free) |
| 1334 | free (tsec_free); |
| 1335 | } |
| 1336 | |
| 1337 | /* We've now determined that we can skip an initial gp load. Verify |
| 1338 | that the call and the target use the same gp. */ |
| 1339 | if (info->link_info->hash->creator != info->tsec->owner->xvec |
| 1340 | || info->gotobj != alpha_elf_tdata (info->tsec->owner)->gotobj) |
| 1341 | return 0; |
| 1342 | |
| 1343 | return symval + 8; |
| 1344 | } |
| 1345 | |
| 1346 | static boolean |
| 1347 | elf64_alpha_relax_without_lituse (info, symval, irel) |
| 1348 | struct alpha_relax_info *info; |
| 1349 | bfd_vma symval; |
| 1350 | Elf_Internal_Rela *irel; |
| 1351 | { |
| 1352 | unsigned int insn; |
| 1353 | bfd_signed_vma disp; |
| 1354 | |
| 1355 | /* Get the instruction. */ |
| 1356 | insn = bfd_get_32 (info->abfd, info->contents + irel->r_offset); |
| 1357 | |
| 1358 | if (insn >> 26 != OP_LDQ) |
| 1359 | { |
| 1360 | ((*_bfd_error_handler) |
| 1361 | ("%s: %s+0x%lx: warning: LITERAL relocation against unexpected insn", |
| 1362 | bfd_get_filename (info->abfd), info->sec->name, |
| 1363 | (unsigned long) irel->r_offset)); |
| 1364 | return true; |
| 1365 | } |
| 1366 | |
| 1367 | /* So we aren't told much. Do what we can with the address load and |
| 1368 | fake the rest. All of the optimizations here require that the |
| 1369 | offset from the GP fit in 16 bits. */ |
| 1370 | |
| 1371 | disp = symval - info->gp; |
| 1372 | if (disp < -0x8000 || disp >= 0x8000) |
| 1373 | return true; |
| 1374 | |
| 1375 | /* On the LITERAL instruction itself, consider exchanging |
| 1376 | `ldq R,X(gp)' for `lda R,Y(gp)'. */ |
| 1377 | |
| 1378 | insn = (OP_LDA << 26) | (insn & 0x03ff0000); |
| 1379 | bfd_put_32 (info->abfd, insn, info->contents + irel->r_offset); |
| 1380 | info->changed_contents = true; |
| 1381 | |
| 1382 | irel->r_info = ELF64_R_INFO (ELF64_R_SYM (irel->r_info), R_ALPHA_GPRELLOW); |
| 1383 | info->changed_relocs = true; |
| 1384 | |
| 1385 | /* Reduce the use count on this got entry by one, possibly |
| 1386 | eliminating it. */ |
| 1387 | info->gotent->use_count -= 1; |
| 1388 | alpha_elf_tdata (info->gotent->gotobj)->total_got_entries -= 1; |
| 1389 | if (!info->h) |
| 1390 | alpha_elf_tdata (info->gotent->gotobj)->n_local_got_entries -= 1; |
| 1391 | |
| 1392 | /* ??? Search forward through this basic block looking for insns |
| 1393 | that use the target register. Stop after an insn modifying the |
| 1394 | register is seen, or after a branch or call. |
| 1395 | |
| 1396 | Any such memory load insn may be substituted by a load directly |
| 1397 | off the GP. This allows the memory load insn to be issued before |
| 1398 | the calculated GP register would otherwise be ready. |
| 1399 | |
| 1400 | Any such jsr insn can be replaced by a bsr if it is in range. |
| 1401 | |
| 1402 | This would mean that we'd have to _add_ relocations, the pain of |
| 1403 | which gives one pause. */ |
| 1404 | |
| 1405 | return true; |
| 1406 | } |
| 1407 | |
| 1408 | static boolean |
| 1409 | elf64_alpha_relax_section (abfd, sec, link_info, again) |
| 1410 | bfd *abfd; |
| 1411 | asection *sec; |
| 1412 | struct bfd_link_info *link_info; |
| 1413 | boolean *again; |
| 1414 | { |
| 1415 | Elf_Internal_Shdr *symtab_hdr; |
| 1416 | Elf_Internal_Rela *internal_relocs; |
| 1417 | Elf_Internal_Rela *free_relocs = NULL; |
| 1418 | Elf_Internal_Rela *irel, *irelend; |
| 1419 | bfd_byte *free_contents = NULL; |
| 1420 | Elf64_External_Sym *extsyms = NULL; |
| 1421 | Elf64_External_Sym *free_extsyms = NULL; |
| 1422 | struct alpha_elf_got_entry **local_got_entries; |
| 1423 | struct alpha_relax_info info; |
| 1424 | |
| 1425 | /* We are not currently changing any sizes, so only one pass. */ |
| 1426 | *again = false; |
| 1427 | |
| 1428 | if (link_info->relocateable |
| 1429 | || (sec->flags & SEC_RELOC) == 0 |
| 1430 | || sec->reloc_count == 0) |
| 1431 | return true; |
| 1432 | |
| 1433 | /* If this is the first time we have been called for this section, |
| 1434 | initialize the cooked size. */ |
| 1435 | if (sec->_cooked_size == 0) |
| 1436 | sec->_cooked_size = sec->_raw_size; |
| 1437 | |
| 1438 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1439 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
| 1440 | |
| 1441 | /* Load the relocations for this section. */ |
| 1442 | internal_relocs = (_bfd_elf64_link_read_relocs |
| 1443 | (abfd, sec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
| 1444 | link_info->keep_memory)); |
| 1445 | if (internal_relocs == NULL) |
| 1446 | goto error_return; |
| 1447 | if (! link_info->keep_memory) |
| 1448 | free_relocs = internal_relocs; |
| 1449 | |
| 1450 | memset(&info, 0, sizeof(info)); |
| 1451 | info.abfd = abfd; |
| 1452 | info.sec = sec; |
| 1453 | info.link_info = link_info; |
| 1454 | info.relocs = internal_relocs; |
| 1455 | info.relend = irelend = internal_relocs + sec->reloc_count; |
| 1456 | |
| 1457 | /* Find the GP for this object. */ |
| 1458 | info.gotobj = alpha_elf_tdata (abfd)->gotobj; |
| 1459 | if (info.gotobj) |
| 1460 | { |
| 1461 | asection *sgot = alpha_elf_tdata (info.gotobj)->got; |
| 1462 | info.gp = _bfd_get_gp_value (info.gotobj); |
| 1463 | if (info.gp == 0) |
| 1464 | { |
| 1465 | info.gp = (sgot->output_section->vma |
| 1466 | + sgot->output_offset |
| 1467 | + 0x8000); |
| 1468 | _bfd_set_gp_value (info.gotobj, info.gp); |
| 1469 | } |
| 1470 | } |
| 1471 | |
| 1472 | for (irel = internal_relocs; irel < irelend; irel++) |
| 1473 | { |
| 1474 | bfd_vma symval; |
| 1475 | Elf_Internal_Sym isym; |
| 1476 | struct alpha_elf_got_entry *gotent; |
| 1477 | |
| 1478 | if (ELF64_R_TYPE (irel->r_info) != (int) R_ALPHA_LITERAL) |
| 1479 | continue; |
| 1480 | |
| 1481 | /* Get the section contents. */ |
| 1482 | if (info.contents == NULL) |
| 1483 | { |
| 1484 | if (elf_section_data (sec)->this_hdr.contents != NULL) |
| 1485 | info.contents = elf_section_data (sec)->this_hdr.contents; |
| 1486 | else |
| 1487 | { |
| 1488 | info.contents = (bfd_byte *) bfd_malloc (sec->_raw_size); |
| 1489 | if (info.contents == NULL) |
| 1490 | goto error_return; |
| 1491 | free_contents = info.contents; |
| 1492 | |
| 1493 | if (! bfd_get_section_contents (abfd, sec, info.contents, |
| 1494 | (file_ptr) 0, sec->_raw_size)) |
| 1495 | goto error_return; |
| 1496 | } |
| 1497 | } |
| 1498 | |
| 1499 | /* Read this BFD's symbols if we haven't done so already. */ |
| 1500 | if (extsyms == NULL) |
| 1501 | { |
| 1502 | if (symtab_hdr->contents != NULL) |
| 1503 | extsyms = (Elf64_External_Sym *) symtab_hdr->contents; |
| 1504 | else |
| 1505 | { |
| 1506 | extsyms = ((Elf64_External_Sym *) |
| 1507 | bfd_malloc (symtab_hdr->sh_size)); |
| 1508 | if (extsyms == NULL) |
| 1509 | goto error_return; |
| 1510 | free_extsyms = extsyms; |
| 1511 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| 1512 | || (bfd_read (extsyms, 1, symtab_hdr->sh_size, abfd) |
| 1513 | != symtab_hdr->sh_size)) |
| 1514 | goto error_return; |
| 1515 | } |
| 1516 | } |
| 1517 | |
| 1518 | /* Get the value of the symbol referred to by the reloc. */ |
| 1519 | if (ELF64_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 1520 | { |
| 1521 | /* A local symbol. */ |
| 1522 | bfd_elf64_swap_symbol_in (abfd, |
| 1523 | extsyms + ELF64_R_SYM (irel->r_info), |
| 1524 | &isym); |
| 1525 | if (isym.st_shndx == SHN_UNDEF) |
| 1526 | info.tsec = bfd_und_section_ptr; |
| 1527 | else if (isym.st_shndx > 0 && isym.st_shndx < SHN_LORESERVE) |
| 1528 | info.tsec = bfd_section_from_elf_index (abfd, isym.st_shndx); |
| 1529 | else if (isym.st_shndx == SHN_ABS) |
| 1530 | info.tsec = bfd_abs_section_ptr; |
| 1531 | else if (isym.st_shndx == SHN_COMMON) |
| 1532 | info.tsec = bfd_com_section_ptr; |
| 1533 | else |
| 1534 | continue; /* who knows. */ |
| 1535 | |
| 1536 | info.h = NULL; |
| 1537 | info.other = isym.st_other; |
| 1538 | gotent = local_got_entries[ELF64_R_SYM(irel->r_info)]; |
| 1539 | symval = isym.st_value; |
| 1540 | } |
| 1541 | else |
| 1542 | { |
| 1543 | unsigned long indx; |
| 1544 | struct alpha_elf_link_hash_entry *h; |
| 1545 | |
| 1546 | indx = ELF64_R_SYM (irel->r_info) - symtab_hdr->sh_info; |
| 1547 | h = alpha_elf_sym_hashes (abfd)[indx]; |
| 1548 | BFD_ASSERT (h != NULL); |
| 1549 | |
| 1550 | while (h->root.root.type == bfd_link_hash_indirect |
| 1551 | || h->root.root.type == bfd_link_hash_warning) |
| 1552 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
| 1553 | |
| 1554 | /* We can't do anthing with undefined or dynamic symbols. */ |
| 1555 | if (h->root.root.type == bfd_link_hash_undefined |
| 1556 | || h->root.root.type == bfd_link_hash_undefweak |
| 1557 | || alpha_elf_dynamic_symbol_p (&h->root, link_info)) |
| 1558 | continue; |
| 1559 | |
| 1560 | info.h = h; |
| 1561 | info.gotent = gotent; |
| 1562 | info.tsec = h->root.root.u.def.section; |
| 1563 | info.other = h->root.other; |
| 1564 | gotent = h->got_entries; |
| 1565 | symval = h->root.root.u.def.value; |
| 1566 | } |
| 1567 | |
| 1568 | /* Search for the got entry to be used by this relocation. */ |
| 1569 | while (gotent->gotobj != info.gotobj || gotent->addend != irel->r_addend) |
| 1570 | gotent = gotent->next; |
| 1571 | info.gotent = gotent; |
| 1572 | |
| 1573 | symval += info.tsec->output_section->vma + info.tsec->output_offset; |
| 1574 | symval += irel->r_addend; |
| 1575 | |
| 1576 | BFD_ASSERT(info.gotent != NULL); |
| 1577 | |
| 1578 | /* If there exist LITUSE relocations immediately following, this |
| 1579 | opens up all sorts of interesting optimizations, because we |
| 1580 | now know every location that this address load is used. */ |
| 1581 | |
| 1582 | if (irel+1 < irelend && ELF64_R_TYPE (irel[1].r_info) == R_ALPHA_LITUSE) |
| 1583 | { |
| 1584 | irel = elf64_alpha_relax_with_lituse (&info, symval, irel, irelend); |
| 1585 | if (irel == NULL) |
| 1586 | goto error_return; |
| 1587 | } |
| 1588 | else |
| 1589 | { |
| 1590 | if (!elf64_alpha_relax_without_lituse (&info, symval, irel)) |
| 1591 | goto error_return; |
| 1592 | } |
| 1593 | } |
| 1594 | |
| 1595 | if (!elf64_alpha_size_got_sections (abfd, link_info)) |
| 1596 | return false; |
| 1597 | |
| 1598 | if (info.changed_relocs) |
| 1599 | { |
| 1600 | elf_section_data (sec)->relocs = internal_relocs; |
| 1601 | } |
| 1602 | else if (free_relocs != NULL) |
| 1603 | { |
| 1604 | free (free_relocs); |
| 1605 | } |
| 1606 | |
| 1607 | if (info.changed_contents) |
| 1608 | { |
| 1609 | elf_section_data (sec)->this_hdr.contents = info.contents; |
| 1610 | } |
| 1611 | else if (free_contents != NULL) |
| 1612 | { |
| 1613 | if (! link_info->keep_memory) |
| 1614 | free (free_contents); |
| 1615 | else |
| 1616 | { |
| 1617 | /* Cache the section contents for elf_link_input_bfd. */ |
| 1618 | elf_section_data (sec)->this_hdr.contents = info.contents; |
| 1619 | } |
| 1620 | } |
| 1621 | |
| 1622 | if (free_extsyms != NULL) |
| 1623 | { |
| 1624 | if (! link_info->keep_memory) |
| 1625 | free (free_extsyms); |
| 1626 | else |
| 1627 | { |
| 1628 | /* Cache the symbols for elf_link_input_bfd. */ |
| 1629 | symtab_hdr->contents = extsyms; |
| 1630 | } |
| 1631 | } |
| 1632 | |
| 1633 | *again = info.changed_contents || info.changed_relocs; |
| 1634 | |
| 1635 | return true; |
| 1636 | |
| 1637 | error_return: |
| 1638 | if (free_relocs != NULL) |
| 1639 | free (free_relocs); |
| 1640 | if (free_contents != NULL) |
| 1641 | free (free_contents); |
| 1642 | if (free_extsyms != NULL) |
| 1643 | free (free_extsyms); |
| 1644 | return false; |
| 1645 | } |
| 1646 | \f |
| 1647 | /* PLT/GOT Stuff */ |
| 1648 | #define PLT_HEADER_SIZE 32 |
| 1649 | #define PLT_HEADER_WORD1 0xc3600000 /* br $27,.+4 */ |
| 1650 | #define PLT_HEADER_WORD2 0xa77b000c /* ldq $27,12($27) */ |
| 1651 | #define PLT_HEADER_WORD3 0x47ff041f /* nop */ |
| 1652 | #define PLT_HEADER_WORD4 0x6b7b0000 /* jmp $27,($27) */ |
| 1653 | |
| 1654 | #define PLT_ENTRY_SIZE 12 |
| 1655 | #define PLT_ENTRY_WORD1 0xc3800000 /* br $28, plt0 */ |
| 1656 | #define PLT_ENTRY_WORD2 0 |
| 1657 | #define PLT_ENTRY_WORD3 0 |
| 1658 | |
| 1659 | #define MAX_GOT_ENTRIES (64*1024 / 8) |
| 1660 | |
| 1661 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/ld.so" |
| 1662 | \f |
| 1663 | /* Handle an Alpha specific section when reading an object file. This |
| 1664 | is called when elfcode.h finds a section with an unknown type. |
| 1665 | FIXME: We need to handle the SHF_ALPHA_GPREL flag, but I'm not sure |
| 1666 | how to. */ |
| 1667 | |
| 1668 | static boolean |
| 1669 | elf64_alpha_section_from_shdr (abfd, hdr, name) |
| 1670 | bfd *abfd; |
| 1671 | Elf64_Internal_Shdr *hdr; |
| 1672 | char *name; |
| 1673 | { |
| 1674 | asection *newsect; |
| 1675 | |
| 1676 | /* There ought to be a place to keep ELF backend specific flags, but |
| 1677 | at the moment there isn't one. We just keep track of the |
| 1678 | sections by their name, instead. Fortunately, the ABI gives |
| 1679 | suggested names for all the MIPS specific sections, so we will |
| 1680 | probably get away with this. */ |
| 1681 | switch (hdr->sh_type) |
| 1682 | { |
| 1683 | case SHT_ALPHA_DEBUG: |
| 1684 | if (strcmp (name, ".mdebug") != 0) |
| 1685 | return false; |
| 1686 | break; |
| 1687 | #ifdef ERIC_neverdef |
| 1688 | case SHT_ALPHA_REGINFO: |
| 1689 | if (strcmp (name, ".reginfo") != 0 |
| 1690 | || hdr->sh_size != sizeof (Elf64_External_RegInfo)) |
| 1691 | return false; |
| 1692 | break; |
| 1693 | #endif |
| 1694 | default: |
| 1695 | return false; |
| 1696 | } |
| 1697 | |
| 1698 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) |
| 1699 | return false; |
| 1700 | newsect = hdr->bfd_section; |
| 1701 | |
| 1702 | if (hdr->sh_type == SHT_ALPHA_DEBUG) |
| 1703 | { |
| 1704 | if (! bfd_set_section_flags (abfd, newsect, |
| 1705 | (bfd_get_section_flags (abfd, newsect) |
| 1706 | | SEC_DEBUGGING))) |
| 1707 | return false; |
| 1708 | } |
| 1709 | |
| 1710 | #ifdef ERIC_neverdef |
| 1711 | /* For a .reginfo section, set the gp value in the tdata information |
| 1712 | from the contents of this section. We need the gp value while |
| 1713 | processing relocs, so we just get it now. */ |
| 1714 | if (hdr->sh_type == SHT_ALPHA_REGINFO) |
| 1715 | { |
| 1716 | Elf64_External_RegInfo ext; |
| 1717 | Elf64_RegInfo s; |
| 1718 | |
| 1719 | if (! bfd_get_section_contents (abfd, newsect, (PTR) &ext, |
| 1720 | (file_ptr) 0, sizeof ext)) |
| 1721 | return false; |
| 1722 | bfd_alpha_elf64_swap_reginfo_in (abfd, &ext, &s); |
| 1723 | elf_gp (abfd) = s.ri_gp_value; |
| 1724 | } |
| 1725 | #endif |
| 1726 | |
| 1727 | return true; |
| 1728 | } |
| 1729 | |
| 1730 | /* Set the correct type for an Alpha ELF section. We do this by the |
| 1731 | section name, which is a hack, but ought to work. */ |
| 1732 | |
| 1733 | static boolean |
| 1734 | elf64_alpha_fake_sections (abfd, hdr, sec) |
| 1735 | bfd *abfd; |
| 1736 | Elf64_Internal_Shdr *hdr; |
| 1737 | asection *sec; |
| 1738 | { |
| 1739 | register const char *name; |
| 1740 | |
| 1741 | name = bfd_get_section_name (abfd, sec); |
| 1742 | |
| 1743 | if (strcmp (name, ".mdebug") == 0) |
| 1744 | { |
| 1745 | hdr->sh_type = SHT_ALPHA_DEBUG; |
| 1746 | /* In a shared object on Irix 5.3, the .mdebug section has an |
| 1747 | entsize of 0. FIXME: Does this matter? */ |
| 1748 | if ((abfd->flags & DYNAMIC) != 0 ) |
| 1749 | hdr->sh_entsize = 0; |
| 1750 | else |
| 1751 | hdr->sh_entsize = 1; |
| 1752 | } |
| 1753 | #ifdef ERIC_neverdef |
| 1754 | else if (strcmp (name, ".reginfo") == 0) |
| 1755 | { |
| 1756 | hdr->sh_type = SHT_ALPHA_REGINFO; |
| 1757 | /* In a shared object on Irix 5.3, the .reginfo section has an |
| 1758 | entsize of 0x18. FIXME: Does this matter? */ |
| 1759 | if ((abfd->flags & DYNAMIC) != 0) |
| 1760 | hdr->sh_entsize = sizeof (Elf64_External_RegInfo); |
| 1761 | else |
| 1762 | hdr->sh_entsize = 1; |
| 1763 | |
| 1764 | /* Force the section size to the correct value, even if the |
| 1765 | linker thinks it is larger. The link routine below will only |
| 1766 | write out this much data for .reginfo. */ |
| 1767 | hdr->sh_size = sec->_raw_size = sizeof (Elf64_External_RegInfo); |
| 1768 | } |
| 1769 | else if (strcmp (name, ".hash") == 0 |
| 1770 | || strcmp (name, ".dynamic") == 0 |
| 1771 | || strcmp (name, ".dynstr") == 0) |
| 1772 | { |
| 1773 | hdr->sh_entsize = 0; |
| 1774 | hdr->sh_info = SIZEOF_ALPHA_DYNSYM_SECNAMES; |
| 1775 | } |
| 1776 | #endif |
| 1777 | else if (strcmp (name, ".sdata") == 0 |
| 1778 | || strcmp (name, ".sbss") == 0 |
| 1779 | || strcmp (name, ".lit4") == 0 |
| 1780 | || strcmp (name, ".lit8") == 0) |
| 1781 | hdr->sh_flags |= SHF_ALPHA_GPREL; |
| 1782 | |
| 1783 | return true; |
| 1784 | } |
| 1785 | |
| 1786 | /* Hook called by the linker routine which adds symbols from an object |
| 1787 | file. We use it to put .comm items in .sbss, and not .bss. */ |
| 1788 | |
| 1789 | static boolean |
| 1790 | elf64_alpha_add_symbol_hook (abfd, info, sym, namep, flagsp, secp, valp) |
| 1791 | bfd *abfd; |
| 1792 | struct bfd_link_info *info; |
| 1793 | const Elf_Internal_Sym *sym; |
| 1794 | const char **namep; |
| 1795 | flagword *flagsp; |
| 1796 | asection **secp; |
| 1797 | bfd_vma *valp; |
| 1798 | { |
| 1799 | if (sym->st_shndx == SHN_COMMON |
| 1800 | && !info->relocateable |
| 1801 | && sym->st_size <= bfd_get_gp_size (abfd)) |
| 1802 | { |
| 1803 | /* Common symbols less than or equal to -G nn bytes are |
| 1804 | automatically put into .sbss. */ |
| 1805 | |
| 1806 | asection *scomm = bfd_get_section_by_name (abfd, ".scommon"); |
| 1807 | |
| 1808 | if (scomm == NULL) |
| 1809 | { |
| 1810 | scomm = bfd_make_section (abfd, ".scommon"); |
| 1811 | if (scomm == NULL |
| 1812 | || !bfd_set_section_flags (abfd, scomm, (SEC_ALLOC |
| 1813 | | SEC_IS_COMMON |
| 1814 | | SEC_LINKER_CREATED))) |
| 1815 | return false; |
| 1816 | } |
| 1817 | |
| 1818 | *secp = scomm; |
| 1819 | *valp = sym->st_size; |
| 1820 | } |
| 1821 | |
| 1822 | return true; |
| 1823 | } |
| 1824 | |
| 1825 | /* Create the .got section. */ |
| 1826 | |
| 1827 | static boolean |
| 1828 | elf64_alpha_create_got_section(abfd, info) |
| 1829 | bfd *abfd; |
| 1830 | struct bfd_link_info *info; |
| 1831 | { |
| 1832 | asection *s; |
| 1833 | |
| 1834 | if (bfd_get_section_by_name (abfd, ".got")) |
| 1835 | return true; |
| 1836 | |
| 1837 | s = bfd_make_section (abfd, ".got"); |
| 1838 | if (s == NULL |
| 1839 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD |
| 1840 | | SEC_HAS_CONTENTS |
| 1841 | | SEC_IN_MEMORY |
| 1842 | | SEC_LINKER_CREATED)) |
| 1843 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1844 | return false; |
| 1845 | |
| 1846 | alpha_elf_tdata (abfd)->got = s; |
| 1847 | |
| 1848 | return true; |
| 1849 | } |
| 1850 | |
| 1851 | /* Create all the dynamic sections. */ |
| 1852 | |
| 1853 | static boolean |
| 1854 | elf64_alpha_create_dynamic_sections (abfd, info) |
| 1855 | bfd *abfd; |
| 1856 | struct bfd_link_info *info; |
| 1857 | { |
| 1858 | asection *s; |
| 1859 | struct elf_link_hash_entry *h; |
| 1860 | |
| 1861 | /* We need to create .plt, .rela.plt, .got, and .rela.got sections. */ |
| 1862 | |
| 1863 | s = bfd_make_section (abfd, ".plt"); |
| 1864 | if (s == NULL |
| 1865 | || ! bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD |
| 1866 | | SEC_HAS_CONTENTS |
| 1867 | | SEC_IN_MEMORY |
| 1868 | | SEC_LINKER_CREATED |
| 1869 | | SEC_CODE)) |
| 1870 | || ! bfd_set_section_alignment (abfd, s, 3)) |
| 1871 | return false; |
| 1872 | |
| 1873 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 1874 | .plt section. */ |
| 1875 | h = NULL; |
| 1876 | if (! (_bfd_generic_link_add_one_symbol |
| 1877 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, |
| 1878 | (bfd_vma) 0, (const char *) NULL, false, |
| 1879 | get_elf_backend_data (abfd)->collect, |
| 1880 | (struct bfd_link_hash_entry **) &h))) |
| 1881 | return false; |
| 1882 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 1883 | h->type = STT_OBJECT; |
| 1884 | |
| 1885 | if (info->shared |
| 1886 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1887 | return false; |
| 1888 | |
| 1889 | s = bfd_make_section (abfd, ".rela.plt"); |
| 1890 | if (s == NULL |
| 1891 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD |
| 1892 | | SEC_HAS_CONTENTS |
| 1893 | | SEC_IN_MEMORY |
| 1894 | | SEC_LINKER_CREATED |
| 1895 | | SEC_READONLY)) |
| 1896 | || ! bfd_set_section_alignment (abfd, s, 3)) |
| 1897 | return false; |
| 1898 | |
| 1899 | /* We may or may not have created a .got section for this object, but |
| 1900 | we definitely havn't done the rest of the work. */ |
| 1901 | |
| 1902 | if (!elf64_alpha_create_got_section (abfd, info)) |
| 1903 | return false; |
| 1904 | |
| 1905 | s = bfd_make_section(abfd, ".rela.got"); |
| 1906 | if (s == NULL |
| 1907 | || !bfd_set_section_flags (abfd, s, (SEC_ALLOC | SEC_LOAD |
| 1908 | | SEC_HAS_CONTENTS |
| 1909 | | SEC_IN_MEMORY |
| 1910 | | SEC_LINKER_CREATED |
| 1911 | | SEC_READONLY)) |
| 1912 | || !bfd_set_section_alignment (abfd, s, 3)) |
| 1913 | return false; |
| 1914 | |
| 1915 | /* Define the symbol _GLOBAL_OFFSET_TABLE_ at the start of the |
| 1916 | dynobj's .got section. We don't do this in the linker script |
| 1917 | because we don't want to define the symbol if we are not creating |
| 1918 | a global offset table. */ |
| 1919 | h = NULL; |
| 1920 | if (!(_bfd_generic_link_add_one_symbol |
| 1921 | (info, abfd, "_GLOBAL_OFFSET_TABLE_", BSF_GLOBAL, |
| 1922 | alpha_elf_tdata(abfd)->got, (bfd_vma) 0, (const char *) NULL, |
| 1923 | false, get_elf_backend_data (abfd)->collect, |
| 1924 | (struct bfd_link_hash_entry **) &h))) |
| 1925 | return false; |
| 1926 | h->elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 1927 | h->type = STT_OBJECT; |
| 1928 | |
| 1929 | if (info->shared |
| 1930 | && ! _bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1931 | return false; |
| 1932 | |
| 1933 | elf_hash_table (info)->hgot = h; |
| 1934 | |
| 1935 | return true; |
| 1936 | } |
| 1937 | \f |
| 1938 | /* Read ECOFF debugging information from a .mdebug section into a |
| 1939 | ecoff_debug_info structure. */ |
| 1940 | |
| 1941 | static boolean |
| 1942 | elf64_alpha_read_ecoff_info (abfd, section, debug) |
| 1943 | bfd *abfd; |
| 1944 | asection *section; |
| 1945 | struct ecoff_debug_info *debug; |
| 1946 | { |
| 1947 | HDRR *symhdr; |
| 1948 | const struct ecoff_debug_swap *swap; |
| 1949 | char *ext_hdr = NULL; |
| 1950 | |
| 1951 | swap = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| 1952 | memset (debug, 0, sizeof(*debug)); |
| 1953 | |
| 1954 | ext_hdr = (char *) bfd_malloc ((size_t) swap->external_hdr_size); |
| 1955 | if (ext_hdr == NULL && swap->external_hdr_size != 0) |
| 1956 | goto error_return; |
| 1957 | |
| 1958 | if (bfd_get_section_contents (abfd, section, ext_hdr, (file_ptr) 0, |
| 1959 | swap->external_hdr_size) |
| 1960 | == false) |
| 1961 | goto error_return; |
| 1962 | |
| 1963 | symhdr = &debug->symbolic_header; |
| 1964 | (*swap->swap_hdr_in) (abfd, ext_hdr, symhdr); |
| 1965 | |
| 1966 | /* The symbolic header contains absolute file offsets and sizes to |
| 1967 | read. */ |
| 1968 | #define READ(ptr, offset, count, size, type) \ |
| 1969 | if (symhdr->count == 0) \ |
| 1970 | debug->ptr = NULL; \ |
| 1971 | else \ |
| 1972 | { \ |
| 1973 | debug->ptr = (type) bfd_malloc ((size_t) (size * symhdr->count)); \ |
| 1974 | if (debug->ptr == NULL) \ |
| 1975 | goto error_return; \ |
| 1976 | if (bfd_seek (abfd, (file_ptr) symhdr->offset, SEEK_SET) != 0 \ |
| 1977 | || (bfd_read (debug->ptr, size, symhdr->count, \ |
| 1978 | abfd) != size * symhdr->count)) \ |
| 1979 | goto error_return; \ |
| 1980 | } |
| 1981 | |
| 1982 | READ (line, cbLineOffset, cbLine, sizeof (unsigned char), unsigned char *); |
| 1983 | READ (external_dnr, cbDnOffset, idnMax, swap->external_dnr_size, PTR); |
| 1984 | READ (external_pdr, cbPdOffset, ipdMax, swap->external_pdr_size, PTR); |
| 1985 | READ (external_sym, cbSymOffset, isymMax, swap->external_sym_size, PTR); |
| 1986 | READ (external_opt, cbOptOffset, ioptMax, swap->external_opt_size, PTR); |
| 1987 | READ (external_aux, cbAuxOffset, iauxMax, sizeof (union aux_ext), |
| 1988 | union aux_ext *); |
| 1989 | READ (ss, cbSsOffset, issMax, sizeof (char), char *); |
| 1990 | READ (ssext, cbSsExtOffset, issExtMax, sizeof (char), char *); |
| 1991 | READ (external_fdr, cbFdOffset, ifdMax, swap->external_fdr_size, PTR); |
| 1992 | READ (external_rfd, cbRfdOffset, crfd, swap->external_rfd_size, PTR); |
| 1993 | READ (external_ext, cbExtOffset, iextMax, swap->external_ext_size, PTR); |
| 1994 | #undef READ |
| 1995 | |
| 1996 | debug->fdr = NULL; |
| 1997 | debug->adjust = NULL; |
| 1998 | |
| 1999 | return true; |
| 2000 | |
| 2001 | error_return: |
| 2002 | if (ext_hdr != NULL) |
| 2003 | free (ext_hdr); |
| 2004 | if (debug->line != NULL) |
| 2005 | free (debug->line); |
| 2006 | if (debug->external_dnr != NULL) |
| 2007 | free (debug->external_dnr); |
| 2008 | if (debug->external_pdr != NULL) |
| 2009 | free (debug->external_pdr); |
| 2010 | if (debug->external_sym != NULL) |
| 2011 | free (debug->external_sym); |
| 2012 | if (debug->external_opt != NULL) |
| 2013 | free (debug->external_opt); |
| 2014 | if (debug->external_aux != NULL) |
| 2015 | free (debug->external_aux); |
| 2016 | if (debug->ss != NULL) |
| 2017 | free (debug->ss); |
| 2018 | if (debug->ssext != NULL) |
| 2019 | free (debug->ssext); |
| 2020 | if (debug->external_fdr != NULL) |
| 2021 | free (debug->external_fdr); |
| 2022 | if (debug->external_rfd != NULL) |
| 2023 | free (debug->external_rfd); |
| 2024 | if (debug->external_ext != NULL) |
| 2025 | free (debug->external_ext); |
| 2026 | return false; |
| 2027 | } |
| 2028 | |
| 2029 | /* Alpha ELF local labels start with '$'. */ |
| 2030 | |
| 2031 | static boolean |
| 2032 | elf64_alpha_is_local_label_name (abfd, name) |
| 2033 | bfd *abfd; |
| 2034 | const char *name; |
| 2035 | { |
| 2036 | return name[0] == '$'; |
| 2037 | } |
| 2038 | |
| 2039 | /* Alpha ELF follows MIPS ELF in using a special find_nearest_line |
| 2040 | routine in order to handle the ECOFF debugging information. We |
| 2041 | still call this mips_elf_find_line because of the slot |
| 2042 | find_line_info in elf_obj_tdata is declared that way. */ |
| 2043 | |
| 2044 | struct mips_elf_find_line |
| 2045 | { |
| 2046 | struct ecoff_debug_info d; |
| 2047 | struct ecoff_find_line i; |
| 2048 | }; |
| 2049 | |
| 2050 | static boolean |
| 2051 | elf64_alpha_find_nearest_line (abfd, section, symbols, offset, filename_ptr, |
| 2052 | functionname_ptr, line_ptr) |
| 2053 | bfd *abfd; |
| 2054 | asection *section; |
| 2055 | asymbol **symbols; |
| 2056 | bfd_vma offset; |
| 2057 | const char **filename_ptr; |
| 2058 | const char **functionname_ptr; |
| 2059 | unsigned int *line_ptr; |
| 2060 | { |
| 2061 | asection *msec; |
| 2062 | |
| 2063 | msec = bfd_get_section_by_name (abfd, ".mdebug"); |
| 2064 | if (msec != NULL) |
| 2065 | { |
| 2066 | flagword origflags; |
| 2067 | struct mips_elf_find_line *fi; |
| 2068 | const struct ecoff_debug_swap * const swap = |
| 2069 | get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| 2070 | |
| 2071 | /* If we are called during a link, alpha_elf_final_link may have |
| 2072 | cleared the SEC_HAS_CONTENTS field. We force it back on here |
| 2073 | if appropriate (which it normally will be). */ |
| 2074 | origflags = msec->flags; |
| 2075 | if (elf_section_data (msec)->this_hdr.sh_type != SHT_NOBITS) |
| 2076 | msec->flags |= SEC_HAS_CONTENTS; |
| 2077 | |
| 2078 | fi = elf_tdata (abfd)->find_line_info; |
| 2079 | if (fi == NULL) |
| 2080 | { |
| 2081 | bfd_size_type external_fdr_size; |
| 2082 | char *fraw_src; |
| 2083 | char *fraw_end; |
| 2084 | struct fdr *fdr_ptr; |
| 2085 | |
| 2086 | fi = ((struct mips_elf_find_line *) |
| 2087 | bfd_zalloc (abfd, sizeof (struct mips_elf_find_line))); |
| 2088 | if (fi == NULL) |
| 2089 | { |
| 2090 | msec->flags = origflags; |
| 2091 | return false; |
| 2092 | } |
| 2093 | |
| 2094 | if (!elf64_alpha_read_ecoff_info (abfd, msec, &fi->d)) |
| 2095 | { |
| 2096 | msec->flags = origflags; |
| 2097 | return false; |
| 2098 | } |
| 2099 | |
| 2100 | /* Swap in the FDR information. */ |
| 2101 | fi->d.fdr = ((struct fdr *) |
| 2102 | bfd_alloc (abfd, |
| 2103 | (fi->d.symbolic_header.ifdMax * |
| 2104 | sizeof (struct fdr)))); |
| 2105 | if (fi->d.fdr == NULL) |
| 2106 | { |
| 2107 | msec->flags = origflags; |
| 2108 | return false; |
| 2109 | } |
| 2110 | external_fdr_size = swap->external_fdr_size; |
| 2111 | fdr_ptr = fi->d.fdr; |
| 2112 | fraw_src = (char *) fi->d.external_fdr; |
| 2113 | fraw_end = (fraw_src |
| 2114 | + fi->d.symbolic_header.ifdMax * external_fdr_size); |
| 2115 | for (; fraw_src < fraw_end; fraw_src += external_fdr_size, fdr_ptr++) |
| 2116 | (*swap->swap_fdr_in) (abfd, (PTR) fraw_src, fdr_ptr); |
| 2117 | |
| 2118 | elf_tdata (abfd)->find_line_info = fi; |
| 2119 | |
| 2120 | /* Note that we don't bother to ever free this information. |
| 2121 | find_nearest_line is either called all the time, as in |
| 2122 | objdump -l, so the information should be saved, or it is |
| 2123 | rarely called, as in ld error messages, so the memory |
| 2124 | wasted is unimportant. Still, it would probably be a |
| 2125 | good idea for free_cached_info to throw it away. */ |
| 2126 | } |
| 2127 | |
| 2128 | if (_bfd_ecoff_locate_line (abfd, section, offset, &fi->d, swap, |
| 2129 | &fi->i, filename_ptr, functionname_ptr, |
| 2130 | line_ptr)) |
| 2131 | { |
| 2132 | msec->flags = origflags; |
| 2133 | return true; |
| 2134 | } |
| 2135 | |
| 2136 | msec->flags = origflags; |
| 2137 | } |
| 2138 | |
| 2139 | /* Fall back on the generic ELF find_nearest_line routine. */ |
| 2140 | |
| 2141 | return _bfd_elf_find_nearest_line (abfd, section, symbols, offset, |
| 2142 | filename_ptr, functionname_ptr, |
| 2143 | line_ptr); |
| 2144 | } |
| 2145 | \f |
| 2146 | /* Structure used to pass information to alpha_elf_output_extsym. */ |
| 2147 | |
| 2148 | struct extsym_info |
| 2149 | { |
| 2150 | bfd *abfd; |
| 2151 | struct bfd_link_info *info; |
| 2152 | struct ecoff_debug_info *debug; |
| 2153 | const struct ecoff_debug_swap *swap; |
| 2154 | boolean failed; |
| 2155 | }; |
| 2156 | |
| 2157 | static boolean |
| 2158 | elf64_alpha_output_extsym (h, data) |
| 2159 | struct alpha_elf_link_hash_entry *h; |
| 2160 | PTR data; |
| 2161 | { |
| 2162 | struct extsym_info *einfo = (struct extsym_info *) data; |
| 2163 | boolean strip; |
| 2164 | asection *sec, *output_section; |
| 2165 | |
| 2166 | if (h->root.indx == -2) |
| 2167 | strip = false; |
| 2168 | else if (((h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 2169 | || (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_DYNAMIC) != 0) |
| 2170 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR) == 0 |
| 2171 | && (h->root.elf_link_hash_flags & ELF_LINK_HASH_REF_REGULAR) == 0) |
| 2172 | strip = true; |
| 2173 | else if (einfo->info->strip == strip_all |
| 2174 | || (einfo->info->strip == strip_some |
| 2175 | && bfd_hash_lookup (einfo->info->keep_hash, |
| 2176 | h->root.root.root.string, |
| 2177 | false, false) == NULL)) |
| 2178 | strip = true; |
| 2179 | else |
| 2180 | strip = false; |
| 2181 | |
| 2182 | if (strip) |
| 2183 | return true; |
| 2184 | |
| 2185 | if (h->esym.ifd == -2) |
| 2186 | { |
| 2187 | h->esym.jmptbl = 0; |
| 2188 | h->esym.cobol_main = 0; |
| 2189 | h->esym.weakext = 0; |
| 2190 | h->esym.reserved = 0; |
| 2191 | h->esym.ifd = ifdNil; |
| 2192 | h->esym.asym.value = 0; |
| 2193 | h->esym.asym.st = stGlobal; |
| 2194 | |
| 2195 | if (h->root.root.type != bfd_link_hash_defined |
| 2196 | && h->root.root.type != bfd_link_hash_defweak) |
| 2197 | h->esym.asym.sc = scAbs; |
| 2198 | else |
| 2199 | { |
| 2200 | const char *name; |
| 2201 | |
| 2202 | sec = h->root.root.u.def.section; |
| 2203 | output_section = sec->output_section; |
| 2204 | |
| 2205 | /* When making a shared library and symbol h is the one from |
| 2206 | the another shared library, OUTPUT_SECTION may be null. */ |
| 2207 | if (output_section == NULL) |
| 2208 | h->esym.asym.sc = scUndefined; |
| 2209 | else |
| 2210 | { |
| 2211 | name = bfd_section_name (output_section->owner, output_section); |
| 2212 | |
| 2213 | if (strcmp (name, ".text") == 0) |
| 2214 | h->esym.asym.sc = scText; |
| 2215 | else if (strcmp (name, ".data") == 0) |
| 2216 | h->esym.asym.sc = scData; |
| 2217 | else if (strcmp (name, ".sdata") == 0) |
| 2218 | h->esym.asym.sc = scSData; |
| 2219 | else if (strcmp (name, ".rodata") == 0 |
| 2220 | || strcmp (name, ".rdata") == 0) |
| 2221 | h->esym.asym.sc = scRData; |
| 2222 | else if (strcmp (name, ".bss") == 0) |
| 2223 | h->esym.asym.sc = scBss; |
| 2224 | else if (strcmp (name, ".sbss") == 0) |
| 2225 | h->esym.asym.sc = scSBss; |
| 2226 | else if (strcmp (name, ".init") == 0) |
| 2227 | h->esym.asym.sc = scInit; |
| 2228 | else if (strcmp (name, ".fini") == 0) |
| 2229 | h->esym.asym.sc = scFini; |
| 2230 | else |
| 2231 | h->esym.asym.sc = scAbs; |
| 2232 | } |
| 2233 | } |
| 2234 | |
| 2235 | h->esym.asym.reserved = 0; |
| 2236 | h->esym.asym.index = indexNil; |
| 2237 | } |
| 2238 | |
| 2239 | if (h->root.root.type == bfd_link_hash_common) |
| 2240 | h->esym.asym.value = h->root.root.u.c.size; |
| 2241 | else if (h->root.root.type == bfd_link_hash_defined |
| 2242 | || h->root.root.type == bfd_link_hash_defweak) |
| 2243 | { |
| 2244 | if (h->esym.asym.sc == scCommon) |
| 2245 | h->esym.asym.sc = scBss; |
| 2246 | else if (h->esym.asym.sc == scSCommon) |
| 2247 | h->esym.asym.sc = scSBss; |
| 2248 | |
| 2249 | sec = h->root.root.u.def.section; |
| 2250 | output_section = sec->output_section; |
| 2251 | if (output_section != NULL) |
| 2252 | h->esym.asym.value = (h->root.root.u.def.value |
| 2253 | + sec->output_offset |
| 2254 | + output_section->vma); |
| 2255 | else |
| 2256 | h->esym.asym.value = 0; |
| 2257 | } |
| 2258 | else if ((h->root.elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) != 0) |
| 2259 | { |
| 2260 | /* Set type and value for a symbol with a function stub. */ |
| 2261 | h->esym.asym.st = stProc; |
| 2262 | sec = bfd_get_section_by_name (einfo->abfd, ".plt"); |
| 2263 | if (sec == NULL) |
| 2264 | h->esym.asym.value = 0; |
| 2265 | else |
| 2266 | { |
| 2267 | output_section = sec->output_section; |
| 2268 | if (output_section != NULL) |
| 2269 | h->esym.asym.value = (h->root.plt.offset |
| 2270 | + sec->output_offset |
| 2271 | + output_section->vma); |
| 2272 | else |
| 2273 | h->esym.asym.value = 0; |
| 2274 | } |
| 2275 | #if 0 /* FIXME? */ |
| 2276 | h->esym.ifd = 0; |
| 2277 | #endif |
| 2278 | } |
| 2279 | |
| 2280 | if (! bfd_ecoff_debug_one_external (einfo->abfd, einfo->debug, einfo->swap, |
| 2281 | h->root.root.root.string, |
| 2282 | &h->esym)) |
| 2283 | { |
| 2284 | einfo->failed = true; |
| 2285 | return false; |
| 2286 | } |
| 2287 | |
| 2288 | return true; |
| 2289 | } |
| 2290 | |
| 2291 | /* FIXME: Create a runtime procedure table from the .mdebug section. |
| 2292 | |
| 2293 | static boolean |
| 2294 | mips_elf_create_procedure_table (handle, abfd, info, s, debug) |
| 2295 | PTR handle; |
| 2296 | bfd *abfd; |
| 2297 | struct bfd_link_info *info; |
| 2298 | asection *s; |
| 2299 | struct ecoff_debug_info *debug; |
| 2300 | */ |
| 2301 | \f |
| 2302 | /* Handle dynamic relocations when doing an Alpha ELF link. */ |
| 2303 | |
| 2304 | static boolean |
| 2305 | elf64_alpha_check_relocs (abfd, info, sec, relocs) |
| 2306 | bfd *abfd; |
| 2307 | struct bfd_link_info *info; |
| 2308 | asection *sec; |
| 2309 | const Elf_Internal_Rela *relocs; |
| 2310 | { |
| 2311 | bfd *dynobj; |
| 2312 | asection *sreloc; |
| 2313 | const char *rel_sec_name; |
| 2314 | Elf_Internal_Shdr *symtab_hdr; |
| 2315 | struct alpha_elf_link_hash_entry **sym_hashes; |
| 2316 | struct alpha_elf_got_entry **local_got_entries; |
| 2317 | const Elf_Internal_Rela *rel, *relend; |
| 2318 | int got_created; |
| 2319 | |
| 2320 | if (info->relocateable) |
| 2321 | return true; |
| 2322 | |
| 2323 | dynobj = elf_hash_table(info)->dynobj; |
| 2324 | if (dynobj == NULL) |
| 2325 | elf_hash_table(info)->dynobj = dynobj = abfd; |
| 2326 | |
| 2327 | sreloc = NULL; |
| 2328 | rel_sec_name = NULL; |
| 2329 | symtab_hdr = &elf_tdata(abfd)->symtab_hdr; |
| 2330 | sym_hashes = alpha_elf_sym_hashes(abfd); |
| 2331 | local_got_entries = alpha_elf_tdata(abfd)->local_got_entries; |
| 2332 | got_created = 0; |
| 2333 | |
| 2334 | relend = relocs + sec->reloc_count; |
| 2335 | for (rel = relocs; rel < relend; ++rel) |
| 2336 | { |
| 2337 | unsigned long r_symndx, r_type; |
| 2338 | struct alpha_elf_link_hash_entry *h; |
| 2339 | |
| 2340 | r_symndx = ELF64_R_SYM (rel->r_info); |
| 2341 | if (r_symndx < symtab_hdr->sh_info) |
| 2342 | h = NULL; |
| 2343 | else |
| 2344 | { |
| 2345 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 2346 | |
| 2347 | while (h->root.root.type == bfd_link_hash_indirect |
| 2348 | || h->root.root.type == bfd_link_hash_warning) |
| 2349 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
| 2350 | |
| 2351 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_REF_REGULAR; |
| 2352 | } |
| 2353 | r_type = ELF64_R_TYPE (rel->r_info); |
| 2354 | |
| 2355 | switch (r_type) |
| 2356 | { |
| 2357 | case R_ALPHA_LITERAL: |
| 2358 | { |
| 2359 | struct alpha_elf_got_entry *gotent; |
| 2360 | int flags = 0; |
| 2361 | |
| 2362 | if (h) |
| 2363 | { |
| 2364 | /* Search for and possibly create a got entry. */ |
| 2365 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
| 2366 | if (gotent->gotobj == abfd && |
| 2367 | gotent->addend == rel->r_addend) |
| 2368 | break; |
| 2369 | |
| 2370 | if (!gotent) |
| 2371 | { |
| 2372 | gotent = ((struct alpha_elf_got_entry *) |
| 2373 | bfd_alloc (abfd, |
| 2374 | sizeof (struct alpha_elf_got_entry))); |
| 2375 | if (!gotent) |
| 2376 | return false; |
| 2377 | |
| 2378 | gotent->gotobj = abfd; |
| 2379 | gotent->addend = rel->r_addend; |
| 2380 | gotent->got_offset = -1; |
| 2381 | gotent->flags = 0; |
| 2382 | gotent->use_count = 1; |
| 2383 | |
| 2384 | gotent->next = h->got_entries; |
| 2385 | h->got_entries = gotent; |
| 2386 | |
| 2387 | alpha_elf_tdata (abfd)->total_got_entries++; |
| 2388 | } |
| 2389 | else |
| 2390 | gotent->use_count += 1; |
| 2391 | } |
| 2392 | else |
| 2393 | { |
| 2394 | /* This is a local .got entry -- record for merge. */ |
| 2395 | if (!local_got_entries) |
| 2396 | { |
| 2397 | size_t size; |
| 2398 | size = (symtab_hdr->sh_info |
| 2399 | * sizeof (struct alpha_elf_got_entry *)); |
| 2400 | |
| 2401 | local_got_entries = ((struct alpha_elf_got_entry **) |
| 2402 | bfd_alloc (abfd, size)); |
| 2403 | if (!local_got_entries) |
| 2404 | return false; |
| 2405 | |
| 2406 | memset (local_got_entries, 0, size); |
| 2407 | alpha_elf_tdata (abfd)->local_got_entries = |
| 2408 | local_got_entries; |
| 2409 | } |
| 2410 | |
| 2411 | for (gotent = local_got_entries[ELF64_R_SYM(rel->r_info)]; |
| 2412 | gotent != NULL && gotent->addend != rel->r_addend; |
| 2413 | gotent = gotent->next) |
| 2414 | continue; |
| 2415 | if (!gotent) |
| 2416 | { |
| 2417 | gotent = ((struct alpha_elf_got_entry *) |
| 2418 | bfd_alloc (abfd, |
| 2419 | sizeof (struct alpha_elf_got_entry))); |
| 2420 | if (!gotent) |
| 2421 | return false; |
| 2422 | |
| 2423 | gotent->gotobj = abfd; |
| 2424 | gotent->addend = rel->r_addend; |
| 2425 | gotent->got_offset = -1; |
| 2426 | gotent->flags = 0; |
| 2427 | gotent->use_count = 1; |
| 2428 | |
| 2429 | gotent->next = local_got_entries[ELF64_R_SYM(rel->r_info)]; |
| 2430 | local_got_entries[ELF64_R_SYM(rel->r_info)] = gotent; |
| 2431 | |
| 2432 | alpha_elf_tdata(abfd)->total_got_entries++; |
| 2433 | alpha_elf_tdata(abfd)->n_local_got_entries++; |
| 2434 | } |
| 2435 | else |
| 2436 | gotent->use_count += 1; |
| 2437 | } |
| 2438 | |
| 2439 | /* Remember how this literal is used from its LITUSEs. |
| 2440 | This will be important when it comes to decide if we can |
| 2441 | create a .plt entry for a function symbol. */ |
| 2442 | if (rel+1 < relend |
| 2443 | && ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE) |
| 2444 | { |
| 2445 | do |
| 2446 | { |
| 2447 | ++rel; |
| 2448 | if (rel->r_addend >= 1 && rel->r_addend <= 3) |
| 2449 | flags |= 1 << rel->r_addend; |
| 2450 | } |
| 2451 | while (rel+1 < relend && |
| 2452 | ELF64_R_TYPE (rel[1].r_info) == R_ALPHA_LITUSE); |
| 2453 | } |
| 2454 | else |
| 2455 | { |
| 2456 | /* No LITUSEs -- presumably the address is not being |
| 2457 | loaded for nothing. */ |
| 2458 | flags = ALPHA_ELF_LINK_HASH_LU_ADDR; |
| 2459 | } |
| 2460 | |
| 2461 | gotent->flags |= flags; |
| 2462 | if (h) |
| 2463 | { |
| 2464 | /* Make a guess as to whether a .plt entry will be needed. */ |
| 2465 | if ((h->flags |= flags) == ALPHA_ELF_LINK_HASH_LU_FUNC) |
| 2466 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| 2467 | else |
| 2468 | h->root.elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
| 2469 | } |
| 2470 | } |
| 2471 | /* FALLTHRU */ |
| 2472 | |
| 2473 | case R_ALPHA_GPDISP: |
| 2474 | case R_ALPHA_GPREL32: |
| 2475 | case R_ALPHA_GPRELHIGH: |
| 2476 | case R_ALPHA_GPRELLOW: |
| 2477 | /* We don't actually use the .got here, but the sections must |
| 2478 | be created before the linker maps input sections to output |
| 2479 | sections. */ |
| 2480 | if (!got_created) |
| 2481 | { |
| 2482 | if (!elf64_alpha_create_got_section (abfd, info)) |
| 2483 | return false; |
| 2484 | |
| 2485 | /* Make sure the object's gotobj is set to itself so |
| 2486 | that we default to every object with its own .got. |
| 2487 | We'll merge .gots later once we've collected each |
| 2488 | object's info. */ |
| 2489 | alpha_elf_tdata(abfd)->gotobj = abfd; |
| 2490 | |
| 2491 | got_created = 1; |
| 2492 | } |
| 2493 | break; |
| 2494 | |
| 2495 | case R_ALPHA_SREL16: |
| 2496 | case R_ALPHA_SREL32: |
| 2497 | case R_ALPHA_SREL64: |
| 2498 | if (h == NULL) |
| 2499 | break; |
| 2500 | /* FALLTHRU */ |
| 2501 | |
| 2502 | case R_ALPHA_REFLONG: |
| 2503 | case R_ALPHA_REFQUAD: |
| 2504 | if (rel_sec_name == NULL) |
| 2505 | { |
| 2506 | rel_sec_name = (bfd_elf_string_from_elf_section |
| 2507 | (abfd, elf_elfheader(abfd)->e_shstrndx, |
| 2508 | elf_section_data(sec)->rel_hdr.sh_name)); |
| 2509 | if (rel_sec_name == NULL) |
| 2510 | return false; |
| 2511 | |
| 2512 | BFD_ASSERT (strncmp (rel_sec_name, ".rela", 5) == 0 |
| 2513 | && strcmp (bfd_get_section_name (abfd, sec), |
| 2514 | rel_sec_name+5) == 0); |
| 2515 | } |
| 2516 | |
| 2517 | /* We need to create the section here now whether we eventually |
| 2518 | use it or not so that it gets mapped to an output section by |
| 2519 | the linker. If not used, we'll kill it in |
| 2520 | size_dynamic_sections. */ |
| 2521 | if (sreloc == NULL) |
| 2522 | { |
| 2523 | sreloc = bfd_get_section_by_name (dynobj, rel_sec_name); |
| 2524 | if (sreloc == NULL) |
| 2525 | { |
| 2526 | sreloc = bfd_make_section (dynobj, rel_sec_name); |
| 2527 | if (sreloc == NULL |
| 2528 | || !bfd_set_section_flags (dynobj, sreloc, |
| 2529 | (SEC_ALLOC|SEC_LOAD |
| 2530 | | SEC_HAS_CONTENTS |
| 2531 | | SEC_IN_MEMORY |
| 2532 | | SEC_LINKER_CREATED |
| 2533 | | SEC_READONLY)) |
| 2534 | || !bfd_set_section_alignment (dynobj, sreloc, 3)) |
| 2535 | return false; |
| 2536 | } |
| 2537 | } |
| 2538 | |
| 2539 | if (h) |
| 2540 | { |
| 2541 | /* Since we havn't seen all of the input symbols yet, we |
| 2542 | don't know whether we'll actually need a dynamic relocation |
| 2543 | entry for this reloc. So make a record of it. Once we |
| 2544 | find out if this thing needs dynamic relocation we'll |
| 2545 | expand the relocation sections by the appropriate amount. */ |
| 2546 | |
| 2547 | struct alpha_elf_reloc_entry *rent; |
| 2548 | |
| 2549 | for (rent = h->reloc_entries; rent; rent = rent->next) |
| 2550 | if (rent->rtype == r_type && rent->srel == sreloc) |
| 2551 | break; |
| 2552 | |
| 2553 | if (!rent) |
| 2554 | { |
| 2555 | rent = ((struct alpha_elf_reloc_entry *) |
| 2556 | bfd_alloc (abfd, |
| 2557 | sizeof (struct alpha_elf_reloc_entry))); |
| 2558 | if (!rent) |
| 2559 | return false; |
| 2560 | |
| 2561 | rent->srel = sreloc; |
| 2562 | rent->rtype = r_type; |
| 2563 | rent->count = 1; |
| 2564 | |
| 2565 | rent->next = h->reloc_entries; |
| 2566 | h->reloc_entries = rent; |
| 2567 | } |
| 2568 | else |
| 2569 | rent->count++; |
| 2570 | } |
| 2571 | else if (info->shared) |
| 2572 | { |
| 2573 | /* If this is a shared library, we need a RELATIVE reloc. */ |
| 2574 | sreloc->_raw_size += sizeof (Elf64_External_Rela); |
| 2575 | } |
| 2576 | break; |
| 2577 | } |
| 2578 | } |
| 2579 | |
| 2580 | return true; |
| 2581 | } |
| 2582 | |
| 2583 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 2584 | regular object. The current definition is in some section of the |
| 2585 | dynamic object, but we're not including those sections. We have to |
| 2586 | change the definition to something the rest of the link can |
| 2587 | understand. */ |
| 2588 | |
| 2589 | static boolean |
| 2590 | elf64_alpha_adjust_dynamic_symbol (info, h) |
| 2591 | struct bfd_link_info *info; |
| 2592 | struct elf_link_hash_entry *h; |
| 2593 | { |
| 2594 | bfd *dynobj; |
| 2595 | asection *s; |
| 2596 | struct alpha_elf_link_hash_entry *ah; |
| 2597 | |
| 2598 | dynobj = elf_hash_table(info)->dynobj; |
| 2599 | ah = (struct alpha_elf_link_hash_entry *)h; |
| 2600 | |
| 2601 | /* Now that we've seen all of the input symbols, finalize our decision |
| 2602 | about whether this symbol should get a .plt entry. */ |
| 2603 | |
| 2604 | if (h->root.type != bfd_link_hash_undefweak |
| 2605 | && alpha_elf_dynamic_symbol_p (h, info) |
| 2606 | && ((h->type == STT_FUNC |
| 2607 | && !(ah->flags & ALPHA_ELF_LINK_HASH_LU_ADDR)) |
| 2608 | || (h->type == STT_NOTYPE |
| 2609 | && ah->flags == ALPHA_ELF_LINK_HASH_LU_FUNC)) |
| 2610 | /* Don't prevent otherwise valid programs from linking by attempting |
| 2611 | to create a new .got entry somewhere. A Correct Solution would be |
| 2612 | to add a new .got section to a new object file and let it be merged |
| 2613 | somewhere later. But for now don't bother. */ |
| 2614 | && ah->got_entries) |
| 2615 | { |
| 2616 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_PLT; |
| 2617 | |
| 2618 | s = bfd_get_section_by_name(dynobj, ".plt"); |
| 2619 | if (!s && !elf64_alpha_create_dynamic_sections (dynobj, info)) |
| 2620 | return false; |
| 2621 | |
| 2622 | /* The first bit of the .plt is reserved. */ |
| 2623 | if (s->_raw_size == 0) |
| 2624 | s->_raw_size = PLT_HEADER_SIZE; |
| 2625 | |
| 2626 | h->plt.offset = s->_raw_size; |
| 2627 | s->_raw_size += PLT_ENTRY_SIZE; |
| 2628 | |
| 2629 | /* If this symbol is not defined in a regular file, and we are not |
| 2630 | generating a shared library, then set the symbol to the location |
| 2631 | in the .plt. This is required to make function pointers compare |
| 2632 | equal between the normal executable and the shared library. */ |
| 2633 | if (! info->shared |
| 2634 | && h->root.type != bfd_link_hash_defweak) |
| 2635 | { |
| 2636 | h->root.u.def.section = s; |
| 2637 | h->root.u.def.value = h->plt.offset; |
| 2638 | } |
| 2639 | |
| 2640 | /* We also need a JMP_SLOT entry in the .rela.plt section. */ |
| 2641 | s = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 2642 | BFD_ASSERT (s != NULL); |
| 2643 | s->_raw_size += sizeof (Elf64_External_Rela); |
| 2644 | |
| 2645 | return true; |
| 2646 | } |
| 2647 | else |
| 2648 | h->elf_link_hash_flags &= ~ELF_LINK_HASH_NEEDS_PLT; |
| 2649 | |
| 2650 | /* If this is a weak symbol, and there is a real definition, the |
| 2651 | processor independent code will have arranged for us to see the |
| 2652 | real definition first, and we can just use the same value. */ |
| 2653 | if (h->weakdef != NULL) |
| 2654 | { |
| 2655 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 2656 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 2657 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 2658 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 2659 | return true; |
| 2660 | } |
| 2661 | |
| 2662 | /* This is a reference to a symbol defined by a dynamic object which |
| 2663 | is not a function. The Alpha, since it uses .got entries for all |
| 2664 | symbols even in regular objects, does not need the hackery of a |
| 2665 | .dynbss section and COPY dynamic relocations. */ |
| 2666 | |
| 2667 | return true; |
| 2668 | } |
| 2669 | |
| 2670 | /* Symbol versioning can create new symbols, and make our old symbols |
| 2671 | indirect to the new ones. Consolidate the got and reloc information |
| 2672 | in these situations. */ |
| 2673 | |
| 2674 | static boolean |
| 2675 | elf64_alpha_merge_ind_symbols (hi, dummy) |
| 2676 | struct alpha_elf_link_hash_entry *hi; |
| 2677 | PTR dummy; |
| 2678 | { |
| 2679 | struct alpha_elf_link_hash_entry *hs; |
| 2680 | |
| 2681 | if (hi->root.root.type != bfd_link_hash_indirect) |
| 2682 | return true; |
| 2683 | hs = hi; |
| 2684 | do { |
| 2685 | hs = (struct alpha_elf_link_hash_entry *)hs->root.root.u.i.link; |
| 2686 | } while (hs->root.root.type == bfd_link_hash_indirect); |
| 2687 | |
| 2688 | /* Merge the flags. Whee. */ |
| 2689 | |
| 2690 | hs->flags |= hi->flags; |
| 2691 | |
| 2692 | /* Merge the .got entries. Cannibalize the old symbol's list in |
| 2693 | doing so, since we don't need it anymore. */ |
| 2694 | |
| 2695 | if (hs->got_entries == NULL) |
| 2696 | hs->got_entries = hi->got_entries; |
| 2697 | else |
| 2698 | { |
| 2699 | struct alpha_elf_got_entry *gi, *gs, *gin, *gsh; |
| 2700 | |
| 2701 | gsh = hs->got_entries; |
| 2702 | for (gi = hi->got_entries; gi ; gi = gin) |
| 2703 | { |
| 2704 | gin = gi->next; |
| 2705 | for (gs = gsh; gs ; gs = gs->next) |
| 2706 | if (gi->gotobj == gs->gotobj && gi->addend == gs->addend) |
| 2707 | goto got_found; |
| 2708 | gi->next = hs->got_entries; |
| 2709 | hs->got_entries = gi; |
| 2710 | got_found:; |
| 2711 | } |
| 2712 | } |
| 2713 | hi->got_entries = NULL; |
| 2714 | |
| 2715 | /* And similar for the reloc entries. */ |
| 2716 | |
| 2717 | if (hs->reloc_entries == NULL) |
| 2718 | hs->reloc_entries = hi->reloc_entries; |
| 2719 | else |
| 2720 | { |
| 2721 | struct alpha_elf_reloc_entry *ri, *rs, *rin, *rsh; |
| 2722 | |
| 2723 | rsh = hs->reloc_entries; |
| 2724 | for (ri = hi->reloc_entries; ri ; ri = rin) |
| 2725 | { |
| 2726 | rin = ri->next; |
| 2727 | for (rs = rsh; rs ; rs = rs->next) |
| 2728 | if (ri->rtype == rs->rtype) |
| 2729 | { |
| 2730 | rs->count += ri->count; |
| 2731 | goto found_reloc; |
| 2732 | } |
| 2733 | ri->next = hs->reloc_entries; |
| 2734 | hs->reloc_entries = ri; |
| 2735 | found_reloc:; |
| 2736 | } |
| 2737 | } |
| 2738 | hi->reloc_entries = NULL; |
| 2739 | |
| 2740 | return true; |
| 2741 | } |
| 2742 | |
| 2743 | /* Is it possible to merge two object file's .got tables? */ |
| 2744 | |
| 2745 | static boolean |
| 2746 | elf64_alpha_can_merge_gots (a, b) |
| 2747 | bfd *a, *b; |
| 2748 | { |
| 2749 | int total = alpha_elf_tdata (a)->total_got_entries; |
| 2750 | bfd *bsub; |
| 2751 | |
| 2752 | /* Trivial quick fallout test. */ |
| 2753 | if (total + alpha_elf_tdata (b)->total_got_entries <= MAX_GOT_ENTRIES) |
| 2754 | return true; |
| 2755 | |
| 2756 | /* By their nature, local .got entries cannot be merged. */ |
| 2757 | if ((total += alpha_elf_tdata (b)->n_local_got_entries) > MAX_GOT_ENTRIES) |
| 2758 | return false; |
| 2759 | |
| 2760 | /* Failing the common trivial comparison, we must effectively |
| 2761 | perform the merge. Not actually performing the merge means that |
| 2762 | we don't have to store undo information in case we fail. */ |
| 2763 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
| 2764 | { |
| 2765 | struct alpha_elf_link_hash_entry **hashes = alpha_elf_sym_hashes (bsub); |
| 2766 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (bsub)->symtab_hdr; |
| 2767 | int i, n; |
| 2768 | |
| 2769 | n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info; |
| 2770 | for (i = 0; i < n; ++i) |
| 2771 | { |
| 2772 | struct alpha_elf_got_entry *ae, *be; |
| 2773 | struct alpha_elf_link_hash_entry *h; |
| 2774 | |
| 2775 | h = hashes[i]; |
| 2776 | while (h->root.root.type == bfd_link_hash_indirect |
| 2777 | || h->root.root.type == bfd_link_hash_warning) |
| 2778 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
| 2779 | |
| 2780 | for (be = h->got_entries; be ; be = be->next) |
| 2781 | { |
| 2782 | if (be->use_count == 0) |
| 2783 | continue; |
| 2784 | if (be->gotobj != b) |
| 2785 | continue; |
| 2786 | |
| 2787 | for (ae = h->got_entries; ae ; ae = ae->next) |
| 2788 | if (ae->gotobj == a && ae->addend == be->addend) |
| 2789 | goto global_found; |
| 2790 | |
| 2791 | if (++total > MAX_GOT_ENTRIES) |
| 2792 | return false; |
| 2793 | global_found:; |
| 2794 | } |
| 2795 | } |
| 2796 | } |
| 2797 | |
| 2798 | return true; |
| 2799 | } |
| 2800 | |
| 2801 | /* Actually merge two .got tables. */ |
| 2802 | |
| 2803 | static void |
| 2804 | elf64_alpha_merge_gots (a, b) |
| 2805 | bfd *a, *b; |
| 2806 | { |
| 2807 | int total = alpha_elf_tdata (a)->total_got_entries; |
| 2808 | bfd *bsub; |
| 2809 | |
| 2810 | /* Remember local expansion. */ |
| 2811 | { |
| 2812 | int e = alpha_elf_tdata (b)->n_local_got_entries; |
| 2813 | total += e; |
| 2814 | alpha_elf_tdata (a)->n_local_got_entries += e; |
| 2815 | } |
| 2816 | |
| 2817 | for (bsub = b; bsub ; bsub = alpha_elf_tdata (bsub)->in_got_link_next) |
| 2818 | { |
| 2819 | struct alpha_elf_got_entry **local_got_entries; |
| 2820 | struct alpha_elf_link_hash_entry **hashes; |
| 2821 | Elf_Internal_Shdr *symtab_hdr; |
| 2822 | int i, n; |
| 2823 | |
| 2824 | /* Let the local .got entries know they are part of a new subsegment. */ |
| 2825 | local_got_entries = alpha_elf_tdata (bsub)->local_got_entries; |
| 2826 | if (local_got_entries) |
| 2827 | { |
| 2828 | n = elf_tdata (bsub)->symtab_hdr.sh_info; |
| 2829 | for (i = 0; i < n; ++i) |
| 2830 | { |
| 2831 | struct alpha_elf_got_entry *ent; |
| 2832 | for (ent = local_got_entries[i]; ent; ent = ent->next) |
| 2833 | ent->gotobj = a; |
| 2834 | } |
| 2835 | } |
| 2836 | |
| 2837 | /* Merge the global .got entries. */ |
| 2838 | hashes = alpha_elf_sym_hashes (bsub); |
| 2839 | symtab_hdr = &elf_tdata (bsub)->symtab_hdr; |
| 2840 | |
| 2841 | n = symtab_hdr->sh_size / symtab_hdr->sh_entsize - symtab_hdr->sh_info; |
| 2842 | for (i = 0; i < n; ++i) |
| 2843 | { |
| 2844 | struct alpha_elf_got_entry *ae, *be, **pbe, **start; |
| 2845 | struct alpha_elf_link_hash_entry *h; |
| 2846 | |
| 2847 | h = hashes[i]; |
| 2848 | while (h->root.root.type == bfd_link_hash_indirect |
| 2849 | || h->root.root.type == bfd_link_hash_warning) |
| 2850 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
| 2851 | |
| 2852 | start = &h->got_entries; |
| 2853 | for (pbe = start, be = *start; be ; pbe = &be->next, be = be->next) |
| 2854 | { |
| 2855 | if (be->use_count == 0) |
| 2856 | { |
| 2857 | *pbe = be->next; |
| 2858 | continue; |
| 2859 | } |
| 2860 | if (be->gotobj != b) |
| 2861 | continue; |
| 2862 | |
| 2863 | for (ae = *start; ae ; ae = ae->next) |
| 2864 | if (ae->gotobj == a && ae->addend == be->addend) |
| 2865 | { |
| 2866 | ae->flags |= be->flags; |
| 2867 | ae->use_count += be->use_count; |
| 2868 | *pbe = be->next; |
| 2869 | goto global_found; |
| 2870 | } |
| 2871 | be->gotobj = a; |
| 2872 | total += 1; |
| 2873 | |
| 2874 | global_found:; |
| 2875 | } |
| 2876 | } |
| 2877 | |
| 2878 | alpha_elf_tdata (bsub)->gotobj = a; |
| 2879 | } |
| 2880 | alpha_elf_tdata (a)->total_got_entries = total; |
| 2881 | |
| 2882 | /* Merge the two in_got chains. */ |
| 2883 | { |
| 2884 | bfd *next; |
| 2885 | |
| 2886 | bsub = a; |
| 2887 | while ((next = alpha_elf_tdata (bsub)->in_got_link_next) != NULL) |
| 2888 | bsub = next; |
| 2889 | |
| 2890 | alpha_elf_tdata (bsub)->in_got_link_next = b; |
| 2891 | } |
| 2892 | } |
| 2893 | |
| 2894 | /* Calculate the offsets for the got entries. */ |
| 2895 | |
| 2896 | static boolean |
| 2897 | elf64_alpha_calc_got_offsets_for_symbol (h, arg) |
| 2898 | struct alpha_elf_link_hash_entry *h; |
| 2899 | PTR arg; |
| 2900 | { |
| 2901 | struct alpha_elf_got_entry *gotent; |
| 2902 | |
| 2903 | for (gotent = h->got_entries; gotent; gotent = gotent->next) |
| 2904 | if (gotent->use_count > 0) |
| 2905 | { |
| 2906 | bfd_size_type *plge |
| 2907 | = &alpha_elf_tdata (gotent->gotobj)->got->_raw_size; |
| 2908 | |
| 2909 | gotent->got_offset = *plge; |
| 2910 | *plge += 8; |
| 2911 | } |
| 2912 | |
| 2913 | return true; |
| 2914 | } |
| 2915 | |
| 2916 | static void |
| 2917 | elf64_alpha_calc_got_offsets (info) |
| 2918 | struct bfd_link_info *info; |
| 2919 | { |
| 2920 | bfd *i, *got_list = alpha_elf_hash_table(info)->got_list; |
| 2921 | |
| 2922 | /* First, zero out the .got sizes, as we may be recalculating the |
| 2923 | .got after optimizing it. */ |
| 2924 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) |
| 2925 | alpha_elf_tdata(i)->got->_raw_size = 0; |
| 2926 | |
| 2927 | /* Next, fill in the offsets for all the global entries. */ |
| 2928 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
| 2929 | elf64_alpha_calc_got_offsets_for_symbol, |
| 2930 | NULL); |
| 2931 | |
| 2932 | /* Finally, fill in the offsets for the local entries. */ |
| 2933 | for (i = got_list; i ; i = alpha_elf_tdata(i)->got_link_next) |
| 2934 | { |
| 2935 | bfd_size_type got_offset = alpha_elf_tdata(i)->got->_raw_size; |
| 2936 | bfd *j; |
| 2937 | |
| 2938 | for (j = i; j ; j = alpha_elf_tdata(j)->in_got_link_next) |
| 2939 | { |
| 2940 | struct alpha_elf_got_entry **local_got_entries, *gotent; |
| 2941 | int k, n; |
| 2942 | |
| 2943 | local_got_entries = alpha_elf_tdata(j)->local_got_entries; |
| 2944 | if (!local_got_entries) |
| 2945 | continue; |
| 2946 | |
| 2947 | for (k = 0, n = elf_tdata(j)->symtab_hdr.sh_info; k < n; ++k) |
| 2948 | for (gotent = local_got_entries[k]; gotent; gotent = gotent->next) |
| 2949 | if (gotent->use_count > 0) |
| 2950 | { |
| 2951 | gotent->got_offset = got_offset; |
| 2952 | got_offset += 8; |
| 2953 | } |
| 2954 | } |
| 2955 | |
| 2956 | alpha_elf_tdata(i)->got->_raw_size = got_offset; |
| 2957 | alpha_elf_tdata(i)->got->_cooked_size = got_offset; |
| 2958 | } |
| 2959 | } |
| 2960 | |
| 2961 | /* Constructs the gots. */ |
| 2962 | |
| 2963 | static boolean |
| 2964 | elf64_alpha_size_got_sections (output_bfd, info) |
| 2965 | bfd *output_bfd; |
| 2966 | struct bfd_link_info *info; |
| 2967 | { |
| 2968 | bfd *i, *got_list, *cur_got_obj; |
| 2969 | int something_changed = 0; |
| 2970 | |
| 2971 | got_list = alpha_elf_hash_table (info)->got_list; |
| 2972 | |
| 2973 | /* On the first time through, pretend we have an existing got list |
| 2974 | consisting of all of the input files. */ |
| 2975 | if (got_list == NULL) |
| 2976 | { |
| 2977 | for (i = info->input_bfds; i ; i = i->link_next) |
| 2978 | { |
| 2979 | bfd *this_got = alpha_elf_tdata (i)->gotobj; |
| 2980 | if (this_got == NULL) |
| 2981 | continue; |
| 2982 | |
| 2983 | /* We are assuming no merging has yet ocurred. */ |
| 2984 | BFD_ASSERT (this_got == i); |
| 2985 | |
| 2986 | if (alpha_elf_tdata (this_got)->total_got_entries > MAX_GOT_ENTRIES) |
| 2987 | { |
| 2988 | /* Yikes! A single object file has too many entries. */ |
| 2989 | (*_bfd_error_handler) |
| 2990 | (_("%s: .got subsegment exceeds 64K (size %d)"), |
| 2991 | bfd_get_filename (i), |
| 2992 | alpha_elf_tdata (this_got)->total_got_entries * 8); |
| 2993 | return false; |
| 2994 | } |
| 2995 | |
| 2996 | if (got_list == NULL) |
| 2997 | got_list = this_got; |
| 2998 | else |
| 2999 | alpha_elf_tdata(cur_got_obj)->got_link_next = this_got; |
| 3000 | cur_got_obj = this_got; |
| 3001 | } |
| 3002 | |
| 3003 | /* Strange degenerate case of no got references. */ |
| 3004 | if (got_list == NULL) |
| 3005 | return true; |
| 3006 | |
| 3007 | alpha_elf_hash_table (info)->got_list = got_list; |
| 3008 | |
| 3009 | /* Force got offsets to be recalculated. */ |
| 3010 | something_changed = 1; |
| 3011 | } |
| 3012 | |
| 3013 | cur_got_obj = got_list; |
| 3014 | i = alpha_elf_tdata(cur_got_obj)->got_link_next; |
| 3015 | while (i != NULL) |
| 3016 | { |
| 3017 | if (elf64_alpha_can_merge_gots (cur_got_obj, i)) |
| 3018 | { |
| 3019 | elf64_alpha_merge_gots (cur_got_obj, i); |
| 3020 | i = alpha_elf_tdata(i)->got_link_next; |
| 3021 | alpha_elf_tdata(cur_got_obj)->got_link_next = i; |
| 3022 | something_changed = 1; |
| 3023 | } |
| 3024 | else |
| 3025 | { |
| 3026 | cur_got_obj = i; |
| 3027 | i = alpha_elf_tdata(i)->got_link_next; |
| 3028 | } |
| 3029 | } |
| 3030 | |
| 3031 | /* Once the gots have been merged, fill in the got offsets for |
| 3032 | everything therein. */ |
| 3033 | if (1 || something_changed) |
| 3034 | elf64_alpha_calc_got_offsets (info); |
| 3035 | |
| 3036 | return true; |
| 3037 | } |
| 3038 | |
| 3039 | static boolean |
| 3040 | elf64_alpha_always_size_sections (output_bfd, info) |
| 3041 | bfd *output_bfd; |
| 3042 | struct bfd_link_info *info; |
| 3043 | { |
| 3044 | bfd *i; |
| 3045 | |
| 3046 | if (info->relocateable) |
| 3047 | return true; |
| 3048 | |
| 3049 | /* First, take care of the indirect symbols created by versioning. */ |
| 3050 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
| 3051 | elf64_alpha_merge_ind_symbols, |
| 3052 | NULL); |
| 3053 | |
| 3054 | if (!elf64_alpha_size_got_sections (output_bfd, info)) |
| 3055 | return false; |
| 3056 | |
| 3057 | /* Allocate space for all of the .got subsections. */ |
| 3058 | i = alpha_elf_hash_table (info)->got_list; |
| 3059 | for ( ; i ; i = alpha_elf_tdata(i)->got_link_next) |
| 3060 | { |
| 3061 | asection *s = alpha_elf_tdata(i)->got; |
| 3062 | if (s->_raw_size > 0) |
| 3063 | { |
| 3064 | s->contents = (bfd_byte *) bfd_zalloc (i, s->_raw_size); |
| 3065 | if (s->contents == NULL) |
| 3066 | return false; |
| 3067 | } |
| 3068 | } |
| 3069 | |
| 3070 | return true; |
| 3071 | } |
| 3072 | |
| 3073 | /* Work out the sizes of the dynamic relocation entries. */ |
| 3074 | |
| 3075 | static boolean |
| 3076 | elf64_alpha_calc_dynrel_sizes (h, info) |
| 3077 | struct alpha_elf_link_hash_entry *h; |
| 3078 | struct bfd_link_info *info; |
| 3079 | { |
| 3080 | /* If the symbol was defined as a common symbol in a regular object |
| 3081 | file, and there was no definition in any dynamic object, then the |
| 3082 | linker will have allocated space for the symbol in a common |
| 3083 | section but the ELF_LINK_HASH_DEF_REGULAR flag will not have been |
| 3084 | set. This is done for dynamic symbols in |
| 3085 | elf_adjust_dynamic_symbol but this is not done for non-dynamic |
| 3086 | symbols, somehow. */ |
| 3087 | if (((h->root.elf_link_hash_flags |
| 3088 | & (ELF_LINK_HASH_DEF_REGULAR |
| 3089 | | ELF_LINK_HASH_REF_REGULAR |
| 3090 | | ELF_LINK_HASH_DEF_DYNAMIC)) |
| 3091 | == ELF_LINK_HASH_REF_REGULAR) |
| 3092 | && (h->root.root.type == bfd_link_hash_defined |
| 3093 | || h->root.root.type == bfd_link_hash_defweak) |
| 3094 | && !(h->root.root.u.def.section->owner->flags & DYNAMIC)) |
| 3095 | { |
| 3096 | h->root.elf_link_hash_flags |= ELF_LINK_HASH_DEF_REGULAR; |
| 3097 | } |
| 3098 | |
| 3099 | /* If the symbol is dynamic, we'll need all the relocations in their |
| 3100 | natural form. If this is a shared object, and it has been forced |
| 3101 | local, we'll need the same number of RELATIVE relocations. */ |
| 3102 | |
| 3103 | if (alpha_elf_dynamic_symbol_p (&h->root, info) || info->shared) |
| 3104 | { |
| 3105 | struct alpha_elf_reloc_entry *relent; |
| 3106 | bfd *dynobj; |
| 3107 | struct alpha_elf_got_entry *gotent; |
| 3108 | bfd_size_type count; |
| 3109 | asection *srel; |
| 3110 | |
| 3111 | for (relent = h->reloc_entries; relent; relent = relent->next) |
| 3112 | if (relent->rtype == R_ALPHA_REFLONG |
| 3113 | || relent->rtype == R_ALPHA_REFQUAD) |
| 3114 | { |
| 3115 | relent->srel->_raw_size += |
| 3116 | sizeof(Elf64_External_Rela) * relent->count; |
| 3117 | } |
| 3118 | |
| 3119 | dynobj = elf_hash_table(info)->dynobj; |
| 3120 | count = 0; |
| 3121 | |
| 3122 | for (gotent = h->got_entries; gotent ; gotent = gotent->next) |
| 3123 | count++; |
| 3124 | |
| 3125 | /* If we are using a .plt entry, subtract one, as the first |
| 3126 | reference uses a .rela.plt entry instead. */ |
| 3127 | if (h->root.plt.offset != MINUS_ONE) |
| 3128 | count--; |
| 3129 | |
| 3130 | if (count > 0) |
| 3131 | { |
| 3132 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3133 | BFD_ASSERT (srel != NULL); |
| 3134 | srel->_raw_size += sizeof (Elf64_External_Rela) * count; |
| 3135 | } |
| 3136 | } |
| 3137 | |
| 3138 | return true; |
| 3139 | } |
| 3140 | |
| 3141 | /* Set the sizes of the dynamic sections. */ |
| 3142 | |
| 3143 | static boolean |
| 3144 | elf64_alpha_size_dynamic_sections (output_bfd, info) |
| 3145 | bfd *output_bfd; |
| 3146 | struct bfd_link_info *info; |
| 3147 | { |
| 3148 | bfd *dynobj; |
| 3149 | asection *s; |
| 3150 | boolean reltext; |
| 3151 | boolean relplt; |
| 3152 | |
| 3153 | dynobj = elf_hash_table(info)->dynobj; |
| 3154 | BFD_ASSERT(dynobj != NULL); |
| 3155 | |
| 3156 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3157 | { |
| 3158 | /* Set the contents of the .interp section to the interpreter. */ |
| 3159 | if (!info->shared) |
| 3160 | { |
| 3161 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 3162 | BFD_ASSERT (s != NULL); |
| 3163 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 3164 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 3165 | } |
| 3166 | |
| 3167 | /* Now that we've seen all of the input files, we can decide which |
| 3168 | symbols need dynamic relocation entries and which don't. We've |
| 3169 | collected information in check_relocs that we can now apply to |
| 3170 | size the dynamic relocation sections. */ |
| 3171 | alpha_elf_link_hash_traverse (alpha_elf_hash_table (info), |
| 3172 | elf64_alpha_calc_dynrel_sizes, |
| 3173 | info); |
| 3174 | |
| 3175 | /* When building shared libraries, each local .got entry needs a |
| 3176 | RELATIVE reloc. */ |
| 3177 | if (info->shared) |
| 3178 | { |
| 3179 | bfd *i; |
| 3180 | asection *srel; |
| 3181 | bfd_size_type count; |
| 3182 | |
| 3183 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3184 | BFD_ASSERT (srel != NULL); |
| 3185 | |
| 3186 | for (i = alpha_elf_hash_table(info)->got_list, count = 0; |
| 3187 | i != NULL; |
| 3188 | i = alpha_elf_tdata(i)->got_link_next) |
| 3189 | count += alpha_elf_tdata(i)->n_local_got_entries; |
| 3190 | |
| 3191 | srel->_raw_size += count * sizeof(Elf64_External_Rela); |
| 3192 | } |
| 3193 | } |
| 3194 | /* else we're not dynamic and by definition we don't need such things. */ |
| 3195 | |
| 3196 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 3197 | determined the sizes of the various dynamic sections. Allocate |
| 3198 | memory for them. */ |
| 3199 | reltext = false; |
| 3200 | relplt = false; |
| 3201 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 3202 | { |
| 3203 | const char *name; |
| 3204 | boolean strip; |
| 3205 | |
| 3206 | if (!(s->flags & SEC_LINKER_CREATED)) |
| 3207 | continue; |
| 3208 | |
| 3209 | /* It's OK to base decisions on the section name, because none |
| 3210 | of the dynobj section names depend upon the input files. */ |
| 3211 | name = bfd_get_section_name (dynobj, s); |
| 3212 | |
| 3213 | /* If we don't need this section, strip it from the output file. |
| 3214 | This is to handle .rela.bss and .rela.plt. We must create it |
| 3215 | in create_dynamic_sections, because it must be created before |
| 3216 | the linker maps input sections to output sections. The |
| 3217 | linker does that before adjust_dynamic_symbol is called, and |
| 3218 | it is that function which decides whether anything needs to |
| 3219 | go into these sections. */ |
| 3220 | |
| 3221 | strip = false; |
| 3222 | |
| 3223 | if (strncmp (name, ".rela", 5) == 0) |
| 3224 | { |
| 3225 | strip = (s->_raw_size == 0); |
| 3226 | |
| 3227 | if (!strip) |
| 3228 | { |
| 3229 | const char *outname; |
| 3230 | asection *target; |
| 3231 | |
| 3232 | /* If this relocation section applies to a read only |
| 3233 | section, then we probably need a DT_TEXTREL entry. */ |
| 3234 | outname = bfd_get_section_name (output_bfd, |
| 3235 | s->output_section); |
| 3236 | target = bfd_get_section_by_name (output_bfd, outname + 5); |
| 3237 | if (target != NULL |
| 3238 | && (target->flags & SEC_READONLY) != 0 |
| 3239 | && (target->flags & SEC_ALLOC) != 0) |
| 3240 | reltext = true; |
| 3241 | |
| 3242 | if (strcmp(name, ".rela.plt") == 0) |
| 3243 | relplt = true; |
| 3244 | |
| 3245 | /* We use the reloc_count field as a counter if we need |
| 3246 | to copy relocs into the output file. */ |
| 3247 | s->reloc_count = 0; |
| 3248 | } |
| 3249 | } |
| 3250 | else if (strcmp (name, ".plt") != 0) |
| 3251 | { |
| 3252 | /* It's not one of our dynamic sections, so don't allocate space. */ |
| 3253 | continue; |
| 3254 | } |
| 3255 | |
| 3256 | if (strip) |
| 3257 | _bfd_strip_section_from_output (s); |
| 3258 | else |
| 3259 | { |
| 3260 | /* Allocate memory for the section contents. */ |
| 3261 | s->contents = (bfd_byte *) bfd_zalloc(dynobj, s->_raw_size); |
| 3262 | if (s->contents == NULL && s->_raw_size != 0) |
| 3263 | return false; |
| 3264 | } |
| 3265 | } |
| 3266 | |
| 3267 | /* If we are generating a shared library, we generate a section |
| 3268 | symbol for each output section. These are local symbols, which |
| 3269 | means that they must come first in the dynamic symbol table. |
| 3270 | That means we must increment the dynamic symbol index of every |
| 3271 | other dynamic symbol. */ |
| 3272 | if (info->shared) |
| 3273 | { |
| 3274 | long c[2], i; |
| 3275 | asection *p; |
| 3276 | |
| 3277 | c[0] = 0; |
| 3278 | c[1] = bfd_count_sections (output_bfd); |
| 3279 | |
| 3280 | elf_hash_table (info)->dynsymcount += c[1]; |
| 3281 | elf_link_hash_traverse (elf_hash_table(info), |
| 3282 | elf64_alpha_adjust_dynindx, |
| 3283 | (PTR) c); |
| 3284 | |
| 3285 | for (i = 1, p = output_bfd->sections; |
| 3286 | p != NULL; |
| 3287 | p = p->next, i++) |
| 3288 | { |
| 3289 | elf_section_data (p)->dynindx = i; |
| 3290 | /* These symbols will have no names, so we don't need to |
| 3291 | fiddle with dynstr_index. */ |
| 3292 | } |
| 3293 | } |
| 3294 | |
| 3295 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3296 | { |
| 3297 | /* Add some entries to the .dynamic section. We fill in the |
| 3298 | values later, in elf64_alpha_finish_dynamic_sections, but we |
| 3299 | must add the entries now so that we get the correct size for |
| 3300 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 3301 | dynamic linker and used by the debugger. */ |
| 3302 | if (!info->shared) |
| 3303 | { |
| 3304 | if (!bfd_elf64_add_dynamic_entry (info, DT_DEBUG, 0)) |
| 3305 | return false; |
| 3306 | } |
| 3307 | |
| 3308 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTGOT, 0)) |
| 3309 | return false; |
| 3310 | |
| 3311 | if (relplt) |
| 3312 | { |
| 3313 | if (! bfd_elf64_add_dynamic_entry (info, DT_PLTRELSZ, 0) |
| 3314 | || ! bfd_elf64_add_dynamic_entry (info, DT_PLTREL, DT_RELA) |
| 3315 | || ! bfd_elf64_add_dynamic_entry (info, DT_JMPREL, 0)) |
| 3316 | return false; |
| 3317 | } |
| 3318 | |
| 3319 | if (! bfd_elf64_add_dynamic_entry (info, DT_RELA, 0) |
| 3320 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELASZ, 0) |
| 3321 | || ! bfd_elf64_add_dynamic_entry (info, DT_RELAENT, |
| 3322 | sizeof(Elf64_External_Rela))) |
| 3323 | return false; |
| 3324 | |
| 3325 | if (reltext) |
| 3326 | { |
| 3327 | if (! bfd_elf64_add_dynamic_entry (info, DT_TEXTREL, 0)) |
| 3328 | return false; |
| 3329 | } |
| 3330 | } |
| 3331 | |
| 3332 | return true; |
| 3333 | } |
| 3334 | |
| 3335 | /* Increment the index of a dynamic symbol by a given amount. Called |
| 3336 | via elf_link_hash_traverse. */ |
| 3337 | |
| 3338 | static boolean |
| 3339 | elf64_alpha_adjust_dynindx (h, cparg) |
| 3340 | struct elf_link_hash_entry *h; |
| 3341 | PTR cparg; |
| 3342 | { |
| 3343 | long *cp = (long *)cparg; |
| 3344 | |
| 3345 | if (h->dynindx >= cp[0]) |
| 3346 | h->dynindx += cp[1]; |
| 3347 | |
| 3348 | return true; |
| 3349 | } |
| 3350 | |
| 3351 | /* Relocate an Alpha ELF section. */ |
| 3352 | |
| 3353 | static boolean |
| 3354 | elf64_alpha_relocate_section (output_bfd, info, input_bfd, input_section, |
| 3355 | contents, relocs, local_syms, local_sections) |
| 3356 | bfd *output_bfd; |
| 3357 | struct bfd_link_info *info; |
| 3358 | bfd *input_bfd; |
| 3359 | asection *input_section; |
| 3360 | bfd_byte *contents; |
| 3361 | Elf_Internal_Rela *relocs; |
| 3362 | Elf_Internal_Sym *local_syms; |
| 3363 | asection **local_sections; |
| 3364 | { |
| 3365 | Elf_Internal_Shdr *symtab_hdr; |
| 3366 | Elf_Internal_Rela *rel; |
| 3367 | Elf_Internal_Rela *relend; |
| 3368 | asection *sec, *sgot, *srel, *srelgot; |
| 3369 | bfd *dynobj, *gotobj; |
| 3370 | bfd_vma gp; |
| 3371 | |
| 3372 | srelgot = srel = NULL; |
| 3373 | symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 3374 | dynobj = elf_hash_table (info)->dynobj; |
| 3375 | if (dynobj) |
| 3376 | { |
| 3377 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3378 | } |
| 3379 | |
| 3380 | /* Find the gp value for this input bfd. */ |
| 3381 | sgot = NULL; |
| 3382 | gp = 0; |
| 3383 | gotobj = alpha_elf_tdata (input_bfd)->gotobj; |
| 3384 | if (gotobj) |
| 3385 | { |
| 3386 | sgot = alpha_elf_tdata (gotobj)->got; |
| 3387 | gp = _bfd_get_gp_value (gotobj); |
| 3388 | if (gp == 0) |
| 3389 | { |
| 3390 | gp = (sgot->output_section->vma |
| 3391 | + sgot->output_offset |
| 3392 | + 0x8000); |
| 3393 | _bfd_set_gp_value (gotobj, gp); |
| 3394 | } |
| 3395 | } |
| 3396 | |
| 3397 | rel = relocs; |
| 3398 | relend = relocs + input_section->reloc_count; |
| 3399 | for (; rel < relend; rel++) |
| 3400 | { |
| 3401 | int r_type; |
| 3402 | reloc_howto_type *howto; |
| 3403 | unsigned long r_symndx; |
| 3404 | struct alpha_elf_link_hash_entry *h; |
| 3405 | Elf_Internal_Sym *sym; |
| 3406 | bfd_vma relocation; |
| 3407 | bfd_vma addend; |
| 3408 | bfd_reloc_status_type r; |
| 3409 | |
| 3410 | r_type = ELF64_R_TYPE(rel->r_info); |
| 3411 | if (r_type < 0 || r_type >= (int) R_ALPHA_max) |
| 3412 | { |
| 3413 | bfd_set_error (bfd_error_bad_value); |
| 3414 | return false; |
| 3415 | } |
| 3416 | howto = elf64_alpha_howto_table + r_type; |
| 3417 | |
| 3418 | r_symndx = ELF64_R_SYM(rel->r_info); |
| 3419 | |
| 3420 | if (info->relocateable) |
| 3421 | { |
| 3422 | /* This is a relocateable link. We don't have to change |
| 3423 | anything, unless the reloc is against a section symbol, |
| 3424 | in which case we have to adjust according to where the |
| 3425 | section symbol winds up in the output section. */ |
| 3426 | |
| 3427 | /* The symbol associated with GPDISP and LITUSE is |
| 3428 | immaterial. Only the addend is significant. */ |
| 3429 | if (r_type == R_ALPHA_GPDISP || r_type == R_ALPHA_LITUSE) |
| 3430 | continue; |
| 3431 | |
| 3432 | if (r_symndx < symtab_hdr->sh_info) |
| 3433 | { |
| 3434 | sym = local_syms + r_symndx; |
| 3435 | if (ELF_ST_TYPE(sym->st_info) == STT_SECTION) |
| 3436 | { |
| 3437 | sec = local_sections[r_symndx]; |
| 3438 | rel->r_addend += sec->output_offset + sym->st_value; |
| 3439 | } |
| 3440 | } |
| 3441 | |
| 3442 | continue; |
| 3443 | } |
| 3444 | |
| 3445 | /* This is a final link. */ |
| 3446 | |
| 3447 | h = NULL; |
| 3448 | sym = NULL; |
| 3449 | sec = NULL; |
| 3450 | |
| 3451 | if (r_symndx < symtab_hdr->sh_info) |
| 3452 | { |
| 3453 | sym = local_syms + r_symndx; |
| 3454 | sec = local_sections[r_symndx]; |
| 3455 | relocation = (sec->output_section->vma |
| 3456 | + sec->output_offset |
| 3457 | + sym->st_value); |
| 3458 | } |
| 3459 | else |
| 3460 | { |
| 3461 | h = alpha_elf_sym_hashes (input_bfd)[r_symndx - symtab_hdr->sh_info]; |
| 3462 | |
| 3463 | while (h->root.root.type == bfd_link_hash_indirect |
| 3464 | || h->root.root.type == bfd_link_hash_warning) |
| 3465 | h = (struct alpha_elf_link_hash_entry *)h->root.root.u.i.link; |
| 3466 | |
| 3467 | if (h->root.root.type == bfd_link_hash_defined |
| 3468 | || h->root.root.type == bfd_link_hash_defweak) |
| 3469 | { |
| 3470 | sec = h->root.root.u.def.section; |
| 3471 | |
| 3472 | #if rth_notdef |
| 3473 | if ((r_type == R_ALPHA_LITERAL |
| 3474 | && elf_hash_table(info)->dynamic_sections_created |
| 3475 | && (!info->shared |
| 3476 | || !info->symbolic |
| 3477 | || !(h->root.elf_link_hash_flags |
| 3478 | & ELF_LINK_HASH_DEF_REGULAR))) |
| 3479 | || (info->shared |
| 3480 | && (!info->symbolic |
| 3481 | || !(h->root.elf_link_hash_flags |
| 3482 | & ELF_LINK_HASH_DEF_REGULAR)) |
| 3483 | && (input_section->flags & SEC_ALLOC) |
| 3484 | && (r_type == R_ALPHA_REFLONG |
| 3485 | || r_type == R_ALPHA_REFQUAD |
| 3486 | || r_type == R_ALPHA_LITERAL))) |
| 3487 | { |
| 3488 | /* In these cases, we don't need the relocation value. |
| 3489 | We check specially because in some obscure cases |
| 3490 | sec->output_section will be NULL. */ |
| 3491 | relocation = 0; |
| 3492 | } |
| 3493 | #else |
| 3494 | /* FIXME: Are not these obscure cases simply bugs? Let's |
| 3495 | get something working and come back to this. */ |
| 3496 | if (sec->output_section == NULL) |
| 3497 | relocation = 0; |
| 3498 | #endif /* rth_notdef */ |
| 3499 | else |
| 3500 | { |
| 3501 | relocation = (h->root.root.u.def.value |
| 3502 | + sec->output_section->vma |
| 3503 | + sec->output_offset); |
| 3504 | } |
| 3505 | } |
| 3506 | else if (h->root.root.type == bfd_link_hash_undefweak) |
| 3507 | relocation = 0; |
| 3508 | else if (info->shared && !info->symbolic && !info->no_undefined) |
| 3509 | relocation = 0; |
| 3510 | else |
| 3511 | { |
| 3512 | if (!((*info->callbacks->undefined_symbol) |
| 3513 | (info, h->root.root.root.string, input_bfd, |
| 3514 | input_section, rel->r_offset))) |
| 3515 | return false; |
| 3516 | relocation = 0; |
| 3517 | } |
| 3518 | } |
| 3519 | addend = rel->r_addend; |
| 3520 | |
| 3521 | switch (r_type) |
| 3522 | { |
| 3523 | case R_ALPHA_GPDISP: |
| 3524 | { |
| 3525 | bfd_byte *p_ldah, *p_lda; |
| 3526 | |
| 3527 | BFD_ASSERT(gp != 0); |
| 3528 | |
| 3529 | relocation = (input_section->output_section->vma |
| 3530 | + input_section->output_offset |
| 3531 | + rel->r_offset); |
| 3532 | |
| 3533 | p_ldah = contents + rel->r_offset - input_section->vma; |
| 3534 | p_lda = p_ldah + rel->r_addend; |
| 3535 | |
| 3536 | r = elf64_alpha_do_reloc_gpdisp (input_bfd, gp - relocation, |
| 3537 | p_ldah, p_lda); |
| 3538 | } |
| 3539 | break; |
| 3540 | |
| 3541 | case R_ALPHA_OP_PUSH: |
| 3542 | case R_ALPHA_OP_STORE: |
| 3543 | case R_ALPHA_OP_PSUB: |
| 3544 | case R_ALPHA_OP_PRSHIFT: |
| 3545 | /* We hate these silly beasts. */ |
| 3546 | abort(); |
| 3547 | |
| 3548 | case R_ALPHA_LITERAL: |
| 3549 | { |
| 3550 | struct alpha_elf_got_entry *gotent; |
| 3551 | boolean dynamic_symbol; |
| 3552 | |
| 3553 | BFD_ASSERT(sgot != NULL); |
| 3554 | BFD_ASSERT(gp != 0); |
| 3555 | |
| 3556 | if (h != NULL) |
| 3557 | { |
| 3558 | gotent = h->got_entries; |
| 3559 | dynamic_symbol = alpha_elf_dynamic_symbol_p (&h->root, info); |
| 3560 | } |
| 3561 | else |
| 3562 | { |
| 3563 | gotent = (alpha_elf_tdata(input_bfd)-> |
| 3564 | local_got_entries[r_symndx]); |
| 3565 | dynamic_symbol = false; |
| 3566 | } |
| 3567 | |
| 3568 | BFD_ASSERT(gotent != NULL); |
| 3569 | |
| 3570 | while (gotent->gotobj != gotobj || gotent->addend != addend) |
| 3571 | gotent = gotent->next; |
| 3572 | |
| 3573 | BFD_ASSERT(gotent->use_count >= 1); |
| 3574 | |
| 3575 | /* Initialize the .got entry's value. */ |
| 3576 | if (!(gotent->flags & ALPHA_ELF_GOT_ENTRY_RELOCS_DONE)) |
| 3577 | { |
| 3578 | bfd_put_64 (output_bfd, relocation+addend, |
| 3579 | sgot->contents + gotent->got_offset); |
| 3580 | |
| 3581 | /* If the symbol has been forced local, output a |
| 3582 | RELATIVE reloc, otherwise it will be handled in |
| 3583 | finish_dynamic_symbol. */ |
| 3584 | if (info->shared && !dynamic_symbol) |
| 3585 | { |
| 3586 | Elf_Internal_Rela outrel; |
| 3587 | |
| 3588 | BFD_ASSERT(srelgot != NULL); |
| 3589 | |
| 3590 | outrel.r_offset = (sgot->output_section->vma |
| 3591 | + sgot->output_offset |
| 3592 | + gotent->got_offset); |
| 3593 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); |
| 3594 | outrel.r_addend = 0; |
| 3595 | |
| 3596 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 3597 | ((Elf64_External_Rela *) |
| 3598 | srelgot->contents) |
| 3599 | + srelgot->reloc_count++); |
| 3600 | BFD_ASSERT (sizeof(Elf64_External_Rela) |
| 3601 | * srelgot->reloc_count |
| 3602 | <= srelgot->_cooked_size); |
| 3603 | } |
| 3604 | |
| 3605 | gotent->flags |= ALPHA_ELF_GOT_ENTRY_RELOCS_DONE; |
| 3606 | } |
| 3607 | |
| 3608 | /* Figure the gprel relocation. */ |
| 3609 | addend = 0; |
| 3610 | relocation = (sgot->output_section->vma |
| 3611 | + sgot->output_offset |
| 3612 | + gotent->got_offset); |
| 3613 | relocation -= gp; |
| 3614 | } |
| 3615 | /* overflow handled by _bfd_final_link_relocate */ |
| 3616 | goto default_reloc; |
| 3617 | |
| 3618 | case R_ALPHA_GPREL32: |
| 3619 | case R_ALPHA_GPRELLOW: |
| 3620 | BFD_ASSERT(gp != 0); |
| 3621 | relocation -= gp; |
| 3622 | goto default_reloc; |
| 3623 | |
| 3624 | case R_ALPHA_GPRELHIGH: |
| 3625 | BFD_ASSERT(gp != 0); |
| 3626 | relocation -= gp; |
| 3627 | relocation += addend; |
| 3628 | addend = 0; |
| 3629 | relocation = (((bfd_signed_vma) relocation >> 16) |
| 3630 | + ((relocation >> 15) & 1)); |
| 3631 | goto default_reloc; |
| 3632 | |
| 3633 | case R_ALPHA_BRADDR: |
| 3634 | case R_ALPHA_HINT: |
| 3635 | /* The regular PC-relative stuff measures from the start of |
| 3636 | the instruction rather than the end. */ |
| 3637 | addend -= 4; |
| 3638 | goto default_reloc; |
| 3639 | |
| 3640 | case R_ALPHA_REFLONG: |
| 3641 | case R_ALPHA_REFQUAD: |
| 3642 | { |
| 3643 | Elf_Internal_Rela outrel; |
| 3644 | boolean skip; |
| 3645 | |
| 3646 | /* Careful here to remember RELATIVE relocations for global |
| 3647 | variables for symbolic shared objects. */ |
| 3648 | |
| 3649 | if (h && alpha_elf_dynamic_symbol_p (&h->root, info)) |
| 3650 | { |
| 3651 | BFD_ASSERT(h->root.dynindx != -1); |
| 3652 | outrel.r_info = ELF64_R_INFO(h->root.dynindx, r_type); |
| 3653 | outrel.r_addend = addend; |
| 3654 | addend = 0, relocation = 0; |
| 3655 | } |
| 3656 | else if (info->shared) |
| 3657 | { |
| 3658 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); |
| 3659 | outrel.r_addend = 0; |
| 3660 | } |
| 3661 | else |
| 3662 | goto default_reloc; |
| 3663 | |
| 3664 | if (!srel) |
| 3665 | { |
| 3666 | const char *name; |
| 3667 | |
| 3668 | name = (bfd_elf_string_from_elf_section |
| 3669 | (input_bfd, elf_elfheader(input_bfd)->e_shstrndx, |
| 3670 | elf_section_data(input_section)->rel_hdr.sh_name)); |
| 3671 | BFD_ASSERT(name != NULL); |
| 3672 | |
| 3673 | srel = bfd_get_section_by_name (dynobj, name); |
| 3674 | BFD_ASSERT(srel != NULL); |
| 3675 | } |
| 3676 | |
| 3677 | skip = false; |
| 3678 | |
| 3679 | if (elf_section_data (input_section)->stab_info == NULL) |
| 3680 | outrel.r_offset = rel->r_offset; |
| 3681 | else |
| 3682 | { |
| 3683 | bfd_vma off; |
| 3684 | |
| 3685 | off = (_bfd_stab_section_offset |
| 3686 | (output_bfd, &elf_hash_table (info)->stab_info, |
| 3687 | input_section, |
| 3688 | &elf_section_data (input_section)->stab_info, |
| 3689 | rel->r_offset)); |
| 3690 | if (off == (bfd_vma) -1) |
| 3691 | skip = true; |
| 3692 | outrel.r_offset = off; |
| 3693 | } |
| 3694 | |
| 3695 | if (! skip) |
| 3696 | outrel.r_offset += (input_section->output_section->vma |
| 3697 | + input_section->output_offset); |
| 3698 | else |
| 3699 | memset (&outrel, 0, sizeof outrel); |
| 3700 | |
| 3701 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 3702 | ((Elf64_External_Rela *) |
| 3703 | srel->contents) |
| 3704 | + srel->reloc_count++); |
| 3705 | BFD_ASSERT (sizeof(Elf64_External_Rela) * srel->reloc_count |
| 3706 | <= srel->_cooked_size); |
| 3707 | } |
| 3708 | goto default_reloc; |
| 3709 | |
| 3710 | default: |
| 3711 | default_reloc: |
| 3712 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3713 | contents, rel->r_offset, relocation, |
| 3714 | addend); |
| 3715 | break; |
| 3716 | } |
| 3717 | |
| 3718 | switch (r) |
| 3719 | { |
| 3720 | case bfd_reloc_ok: |
| 3721 | break; |
| 3722 | |
| 3723 | case bfd_reloc_overflow: |
| 3724 | { |
| 3725 | const char *name; |
| 3726 | |
| 3727 | if (h != NULL) |
| 3728 | name = h->root.root.root.string; |
| 3729 | else |
| 3730 | { |
| 3731 | name = (bfd_elf_string_from_elf_section |
| 3732 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
| 3733 | if (name == NULL) |
| 3734 | return false; |
| 3735 | if (*name == '\0') |
| 3736 | name = bfd_section_name (input_bfd, sec); |
| 3737 | } |
| 3738 | if (! ((*info->callbacks->reloc_overflow) |
| 3739 | (info, name, howto->name, (bfd_vma) 0, |
| 3740 | input_bfd, input_section, rel->r_offset))) |
| 3741 | return false; |
| 3742 | } |
| 3743 | break; |
| 3744 | |
| 3745 | default: |
| 3746 | case bfd_reloc_outofrange: |
| 3747 | abort (); |
| 3748 | } |
| 3749 | } |
| 3750 | |
| 3751 | return true; |
| 3752 | } |
| 3753 | |
| 3754 | /* Finish up dynamic symbol handling. We set the contents of various |
| 3755 | dynamic sections here. */ |
| 3756 | |
| 3757 | static boolean |
| 3758 | elf64_alpha_finish_dynamic_symbol (output_bfd, info, h, sym) |
| 3759 | bfd *output_bfd; |
| 3760 | struct bfd_link_info *info; |
| 3761 | struct elf_link_hash_entry *h; |
| 3762 | Elf_Internal_Sym *sym; |
| 3763 | { |
| 3764 | bfd *dynobj = elf_hash_table(info)->dynobj; |
| 3765 | |
| 3766 | if (h->plt.offset != MINUS_ONE) |
| 3767 | { |
| 3768 | /* Fill in the .plt entry for this symbol. */ |
| 3769 | asection *splt, *sgot, *srel; |
| 3770 | Elf_Internal_Rela outrel; |
| 3771 | bfd_vma got_addr, plt_addr; |
| 3772 | bfd_vma plt_index; |
| 3773 | struct alpha_elf_got_entry *gotent; |
| 3774 | |
| 3775 | BFD_ASSERT (h->dynindx != -1); |
| 3776 | |
| 3777 | /* The first .got entry will be updated by the .plt with the |
| 3778 | address of the target function. */ |
| 3779 | gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
| 3780 | BFD_ASSERT (gotent && gotent->addend == 0); |
| 3781 | |
| 3782 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 3783 | BFD_ASSERT (splt != NULL); |
| 3784 | srel = bfd_get_section_by_name (dynobj, ".rela.plt"); |
| 3785 | BFD_ASSERT (srel != NULL); |
| 3786 | sgot = alpha_elf_tdata (gotent->gotobj)->got; |
| 3787 | BFD_ASSERT (sgot != NULL); |
| 3788 | |
| 3789 | got_addr = (sgot->output_section->vma |
| 3790 | + sgot->output_offset |
| 3791 | + gotent->got_offset); |
| 3792 | plt_addr = (splt->output_section->vma |
| 3793 | + splt->output_offset |
| 3794 | + h->plt.offset); |
| 3795 | |
| 3796 | plt_index = (h->plt.offset - PLT_HEADER_SIZE) / PLT_ENTRY_SIZE; |
| 3797 | |
| 3798 | /* Fill in the entry in the procedure linkage table. */ |
| 3799 | { |
| 3800 | unsigned insn1, insn2, insn3; |
| 3801 | |
| 3802 | insn1 = PLT_ENTRY_WORD1 | ((-(h->plt.offset + 4) >> 2) & 0x1fffff); |
| 3803 | insn2 = PLT_ENTRY_WORD2; |
| 3804 | insn3 = PLT_ENTRY_WORD3; |
| 3805 | |
| 3806 | bfd_put_32 (output_bfd, insn1, splt->contents + h->plt.offset); |
| 3807 | bfd_put_32 (output_bfd, insn2, splt->contents + h->plt.offset + 4); |
| 3808 | bfd_put_32 (output_bfd, insn3, splt->contents + h->plt.offset + 8); |
| 3809 | } |
| 3810 | |
| 3811 | /* Fill in the entry in the .rela.plt section. */ |
| 3812 | outrel.r_offset = got_addr; |
| 3813 | outrel.r_info = ELF64_R_INFO(h->dynindx, R_ALPHA_JMP_SLOT); |
| 3814 | outrel.r_addend = 0; |
| 3815 | |
| 3816 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 3817 | ((Elf64_External_Rela *)srel->contents |
| 3818 | + plt_index)); |
| 3819 | |
| 3820 | if (!(h->elf_link_hash_flags & ELF_LINK_HASH_DEF_REGULAR)) |
| 3821 | { |
| 3822 | /* Mark the symbol as undefined, rather than as defined in the |
| 3823 | .plt section. Leave the value alone. */ |
| 3824 | sym->st_shndx = SHN_UNDEF; |
| 3825 | } |
| 3826 | |
| 3827 | /* Fill in the entries in the .got. */ |
| 3828 | bfd_put_64 (output_bfd, plt_addr, sgot->contents + gotent->got_offset); |
| 3829 | |
| 3830 | /* Subsequent .got entries will continue to bounce through the .plt. */ |
| 3831 | if (gotent->next) |
| 3832 | { |
| 3833 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3834 | BFD_ASSERT (! info->shared || srel != NULL); |
| 3835 | |
| 3836 | gotent = gotent->next; |
| 3837 | do |
| 3838 | { |
| 3839 | sgot = alpha_elf_tdata(gotent->gotobj)->got; |
| 3840 | BFD_ASSERT(sgot != NULL); |
| 3841 | BFD_ASSERT(gotent->addend == 0); |
| 3842 | |
| 3843 | bfd_put_64 (output_bfd, plt_addr, |
| 3844 | sgot->contents + gotent->got_offset); |
| 3845 | |
| 3846 | if (info->shared) |
| 3847 | { |
| 3848 | outrel.r_offset = (sgot->output_section->vma |
| 3849 | + sgot->output_offset |
| 3850 | + gotent->got_offset); |
| 3851 | outrel.r_info = ELF64_R_INFO(0, R_ALPHA_RELATIVE); |
| 3852 | outrel.r_addend = 0; |
| 3853 | |
| 3854 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 3855 | ((Elf64_External_Rela *) |
| 3856 | srel->contents) |
| 3857 | + srel->reloc_count++); |
| 3858 | BFD_ASSERT (sizeof(Elf64_External_Rela) * srel->reloc_count |
| 3859 | <= srel->_cooked_size); |
| 3860 | } |
| 3861 | |
| 3862 | gotent = gotent->next; |
| 3863 | } |
| 3864 | while (gotent != NULL); |
| 3865 | } |
| 3866 | } |
| 3867 | else if (alpha_elf_dynamic_symbol_p (h, info)) |
| 3868 | { |
| 3869 | /* Fill in the dynamic relocations for this symbol's .got entries. */ |
| 3870 | asection *srel; |
| 3871 | Elf_Internal_Rela outrel; |
| 3872 | struct alpha_elf_got_entry *gotent; |
| 3873 | |
| 3874 | srel = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 3875 | BFD_ASSERT (srel != NULL); |
| 3876 | |
| 3877 | outrel.r_info = ELF64_R_INFO (h->dynindx, R_ALPHA_GLOB_DAT); |
| 3878 | for (gotent = ((struct alpha_elf_link_hash_entry *) h)->got_entries; |
| 3879 | gotent != NULL; |
| 3880 | gotent = gotent->next) |
| 3881 | { |
| 3882 | asection *sgot = alpha_elf_tdata (gotent->gotobj)->got; |
| 3883 | outrel.r_offset = (sgot->output_section->vma |
| 3884 | + sgot->output_offset |
| 3885 | + gotent->got_offset); |
| 3886 | outrel.r_addend = gotent->addend; |
| 3887 | |
| 3888 | bfd_elf64_swap_reloca_out (output_bfd, &outrel, |
| 3889 | ((Elf64_External_Rela *)srel->contents |
| 3890 | + srel->reloc_count++)); |
| 3891 | BFD_ASSERT (sizeof(Elf64_External_Rela) * srel->reloc_count |
| 3892 | <= srel->_cooked_size); |
| 3893 | } |
| 3894 | } |
| 3895 | |
| 3896 | /* Mark some specially defined symbols as absolute. */ |
| 3897 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 3898 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0 |
| 3899 | || strcmp (h->root.root.string, "_PROCEDURE_LINKAGE_TABLE_") == 0) |
| 3900 | sym->st_shndx = SHN_ABS; |
| 3901 | |
| 3902 | return true; |
| 3903 | } |
| 3904 | |
| 3905 | /* Finish up the dynamic sections. */ |
| 3906 | |
| 3907 | static boolean |
| 3908 | elf64_alpha_finish_dynamic_sections (output_bfd, info) |
| 3909 | bfd *output_bfd; |
| 3910 | struct bfd_link_info *info; |
| 3911 | { |
| 3912 | bfd *dynobj; |
| 3913 | asection *sdyn; |
| 3914 | |
| 3915 | dynobj = elf_hash_table (info)->dynobj; |
| 3916 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 3917 | |
| 3918 | if (elf_hash_table (info)->dynamic_sections_created) |
| 3919 | { |
| 3920 | asection *splt; |
| 3921 | Elf64_External_Dyn *dyncon, *dynconend; |
| 3922 | |
| 3923 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 3924 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 3925 | |
| 3926 | dyncon = (Elf64_External_Dyn *) sdyn->contents; |
| 3927 | dynconend = (Elf64_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| 3928 | for (; dyncon < dynconend; dyncon++) |
| 3929 | { |
| 3930 | Elf_Internal_Dyn dyn; |
| 3931 | const char *name; |
| 3932 | asection *s; |
| 3933 | |
| 3934 | bfd_elf64_swap_dyn_in (dynobj, dyncon, &dyn); |
| 3935 | |
| 3936 | switch (dyn.d_tag) |
| 3937 | { |
| 3938 | case DT_PLTGOT: |
| 3939 | name = ".plt"; |
| 3940 | goto get_vma; |
| 3941 | case DT_PLTRELSZ: |
| 3942 | name = ".rela.plt"; |
| 3943 | goto get_size; |
| 3944 | case DT_JMPREL: |
| 3945 | name = ".rela.plt"; |
| 3946 | goto get_vma; |
| 3947 | |
| 3948 | case DT_RELASZ: |
| 3949 | /* My interpretation of the TIS v1.1 ELF document indicates |
| 3950 | that RELASZ should not include JMPREL. This is not what |
| 3951 | the rest of the BFD does. It is, however, what the |
| 3952 | glibc ld.so wants. Do this fixup here until we found |
| 3953 | out who is right. */ |
| 3954 | s = bfd_get_section_by_name (output_bfd, ".rela.plt"); |
| 3955 | if (s) |
| 3956 | { |
| 3957 | dyn.d_un.d_val -= |
| 3958 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); |
| 3959 | } |
| 3960 | break; |
| 3961 | |
| 3962 | get_vma: |
| 3963 | s = bfd_get_section_by_name (output_bfd, name); |
| 3964 | dyn.d_un.d_ptr = (s ? s->vma : 0); |
| 3965 | break; |
| 3966 | |
| 3967 | get_size: |
| 3968 | s = bfd_get_section_by_name (output_bfd, name); |
| 3969 | dyn.d_un.d_val = |
| 3970 | (s->_cooked_size ? s->_cooked_size : s->_raw_size); |
| 3971 | break; |
| 3972 | } |
| 3973 | |
| 3974 | bfd_elf64_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3975 | } |
| 3976 | |
| 3977 | /* Initialize the PLT0 entry */ |
| 3978 | if (splt->_raw_size > 0) |
| 3979 | { |
| 3980 | bfd_put_32 (output_bfd, PLT_HEADER_WORD1, splt->contents); |
| 3981 | bfd_put_32 (output_bfd, PLT_HEADER_WORD2, splt->contents + 4); |
| 3982 | bfd_put_32 (output_bfd, PLT_HEADER_WORD3, splt->contents + 8); |
| 3983 | bfd_put_32 (output_bfd, PLT_HEADER_WORD4, splt->contents + 12); |
| 3984 | |
| 3985 | /* The next two words will be filled in by ld.so */ |
| 3986 | bfd_put_64 (output_bfd, 0, splt->contents + 16); |
| 3987 | bfd_put_64 (output_bfd, 0, splt->contents + 24); |
| 3988 | |
| 3989 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
| 3990 | PLT_HEADER_SIZE; |
| 3991 | } |
| 3992 | } |
| 3993 | |
| 3994 | if (info->shared) |
| 3995 | { |
| 3996 | asection *sdynsym; |
| 3997 | asection *s; |
| 3998 | Elf_Internal_Sym sym; |
| 3999 | |
| 4000 | /* Set up the section symbols for the output sections. */ |
| 4001 | |
| 4002 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 4003 | BFD_ASSERT (sdynsym != NULL); |
| 4004 | |
| 4005 | sym.st_size = 0; |
| 4006 | sym.st_name = 0; |
| 4007 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); |
| 4008 | sym.st_other = 0; |
| 4009 | |
| 4010 | for (s = output_bfd->sections; s != NULL; s = s->next) |
| 4011 | { |
| 4012 | int indx; |
| 4013 | |
| 4014 | sym.st_value = s->vma; |
| 4015 | |
| 4016 | indx = elf_section_data (s)->this_idx; |
| 4017 | BFD_ASSERT (indx > 0); |
| 4018 | sym.st_shndx = indx; |
| 4019 | |
| 4020 | bfd_elf64_swap_symbol_out (output_bfd, &sym, |
| 4021 | (PTR) (((Elf64_External_Sym *) |
| 4022 | sdynsym->contents) |
| 4023 | + elf_section_data (s)->dynindx)); |
| 4024 | } |
| 4025 | |
| 4026 | /* Set the sh_info field of the output .dynsym section to the |
| 4027 | index of the first global symbol. */ |
| 4028 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = |
| 4029 | bfd_count_sections (output_bfd) + 1; |
| 4030 | } |
| 4031 | |
| 4032 | return true; |
| 4033 | } |
| 4034 | |
| 4035 | /* We need to use a special link routine to handle the .reginfo and |
| 4036 | the .mdebug sections. We need to merge all instances of these |
| 4037 | sections together, not write them all out sequentially. */ |
| 4038 | |
| 4039 | static boolean |
| 4040 | elf64_alpha_final_link (abfd, info) |
| 4041 | bfd *abfd; |
| 4042 | struct bfd_link_info *info; |
| 4043 | { |
| 4044 | asection *o; |
| 4045 | struct bfd_link_order *p; |
| 4046 | asection *reginfo_sec, *mdebug_sec, *gptab_data_sec, *gptab_bss_sec; |
| 4047 | struct ecoff_debug_info debug; |
| 4048 | const struct ecoff_debug_swap *swap |
| 4049 | = get_elf_backend_data (abfd)->elf_backend_ecoff_debug_swap; |
| 4050 | HDRR *symhdr = &debug.symbolic_header; |
| 4051 | PTR mdebug_handle = NULL; |
| 4052 | |
| 4053 | #if 0 |
| 4054 | if (++ngots == 2) |
| 4055 | { |
| 4056 | (*info->callbacks->warning) |
| 4057 | (info, _("using multiple gp values"), (char *) NULL, |
| 4058 | output_bfd, (asection *) NULL, (bfd_vma) 0); |
| 4059 | } |
| 4060 | #endif |
| 4061 | |
| 4062 | /* Go through the sections and collect the .reginfo and .mdebug |
| 4063 | information. */ |
| 4064 | reginfo_sec = NULL; |
| 4065 | mdebug_sec = NULL; |
| 4066 | gptab_data_sec = NULL; |
| 4067 | gptab_bss_sec = NULL; |
| 4068 | for (o = abfd->sections; o != (asection *) NULL; o = o->next) |
| 4069 | { |
| 4070 | #ifdef ERIC_neverdef |
| 4071 | if (strcmp (o->name, ".reginfo") == 0) |
| 4072 | { |
| 4073 | memset (®info, 0, sizeof reginfo); |
| 4074 | |
| 4075 | /* We have found the .reginfo section in the output file. |
| 4076 | Look through all the link_orders comprising it and merge |
| 4077 | the information together. */ |
| 4078 | for (p = o->link_order_head; |
| 4079 | p != (struct bfd_link_order *) NULL; |
| 4080 | p = p->next) |
| 4081 | { |
| 4082 | asection *input_section; |
| 4083 | bfd *input_bfd; |
| 4084 | Elf64_External_RegInfo ext; |
| 4085 | Elf64_RegInfo sub; |
| 4086 | |
| 4087 | if (p->type != bfd_indirect_link_order) |
| 4088 | { |
| 4089 | if (p->type == bfd_fill_link_order) |
| 4090 | continue; |
| 4091 | abort (); |
| 4092 | } |
| 4093 | |
| 4094 | input_section = p->u.indirect.section; |
| 4095 | input_bfd = input_section->owner; |
| 4096 | |
| 4097 | /* The linker emulation code has probably clobbered the |
| 4098 | size to be zero bytes. */ |
| 4099 | if (input_section->_raw_size == 0) |
| 4100 | input_section->_raw_size = sizeof (Elf64_External_RegInfo); |
| 4101 | |
| 4102 | if (! bfd_get_section_contents (input_bfd, input_section, |
| 4103 | (PTR) &ext, |
| 4104 | (file_ptr) 0, |
| 4105 | sizeof ext)) |
| 4106 | return false; |
| 4107 | |
| 4108 | bfd_alpha_elf64_swap_reginfo_in (input_bfd, &ext, &sub); |
| 4109 | |
| 4110 | reginfo.ri_gprmask |= sub.ri_gprmask; |
| 4111 | reginfo.ri_cprmask[0] |= sub.ri_cprmask[0]; |
| 4112 | reginfo.ri_cprmask[1] |= sub.ri_cprmask[1]; |
| 4113 | reginfo.ri_cprmask[2] |= sub.ri_cprmask[2]; |
| 4114 | reginfo.ri_cprmask[3] |= sub.ri_cprmask[3]; |
| 4115 | |
| 4116 | /* ri_gp_value is set by the function |
| 4117 | alpha_elf_section_processing when the section is |
| 4118 | finally written out. */ |
| 4119 | |
| 4120 | /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| 4121 | elf_link_input_bfd ignores this section. */ |
| 4122 | input_section->flags &=~ SEC_HAS_CONTENTS; |
| 4123 | } |
| 4124 | |
| 4125 | /* Force the section size to the value we want. */ |
| 4126 | o->_raw_size = sizeof (Elf64_External_RegInfo); |
| 4127 | |
| 4128 | /* Skip this section later on (I don't think this currently |
| 4129 | matters, but someday it might). */ |
| 4130 | o->link_order_head = (struct bfd_link_order *) NULL; |
| 4131 | |
| 4132 | reginfo_sec = o; |
| 4133 | } |
| 4134 | #endif |
| 4135 | |
| 4136 | if (strcmp (o->name, ".mdebug") == 0) |
| 4137 | { |
| 4138 | struct extsym_info einfo; |
| 4139 | |
| 4140 | /* We have found the .mdebug section in the output file. |
| 4141 | Look through all the link_orders comprising it and merge |
| 4142 | the information together. */ |
| 4143 | symhdr->magic = swap->sym_magic; |
| 4144 | /* FIXME: What should the version stamp be? */ |
| 4145 | symhdr->vstamp = 0; |
| 4146 | symhdr->ilineMax = 0; |
| 4147 | symhdr->cbLine = 0; |
| 4148 | symhdr->idnMax = 0; |
| 4149 | symhdr->ipdMax = 0; |
| 4150 | symhdr->isymMax = 0; |
| 4151 | symhdr->ioptMax = 0; |
| 4152 | symhdr->iauxMax = 0; |
| 4153 | symhdr->issMax = 0; |
| 4154 | symhdr->issExtMax = 0; |
| 4155 | symhdr->ifdMax = 0; |
| 4156 | symhdr->crfd = 0; |
| 4157 | symhdr->iextMax = 0; |
| 4158 | |
| 4159 | /* We accumulate the debugging information itself in the |
| 4160 | debug_info structure. */ |
| 4161 | debug.line = NULL; |
| 4162 | debug.external_dnr = NULL; |
| 4163 | debug.external_pdr = NULL; |
| 4164 | debug.external_sym = NULL; |
| 4165 | debug.external_opt = NULL; |
| 4166 | debug.external_aux = NULL; |
| 4167 | debug.ss = NULL; |
| 4168 | debug.ssext = debug.ssext_end = NULL; |
| 4169 | debug.external_fdr = NULL; |
| 4170 | debug.external_rfd = NULL; |
| 4171 | debug.external_ext = debug.external_ext_end = NULL; |
| 4172 | |
| 4173 | mdebug_handle = bfd_ecoff_debug_init (abfd, &debug, swap, info); |
| 4174 | if (mdebug_handle == (PTR) NULL) |
| 4175 | return false; |
| 4176 | |
| 4177 | if (1) |
| 4178 | { |
| 4179 | asection *s; |
| 4180 | EXTR esym; |
| 4181 | bfd_vma last; |
| 4182 | unsigned int i; |
| 4183 | static const char * const name[] = |
| 4184 | { |
| 4185 | ".text", ".init", ".fini", ".data", |
| 4186 | ".rodata", ".sdata", ".sbss", ".bss" |
| 4187 | }; |
| 4188 | static const int sc[] = { scText, scInit, scFini, scData, |
| 4189 | scRData, scSData, scSBss, scBss }; |
| 4190 | |
| 4191 | esym.jmptbl = 0; |
| 4192 | esym.cobol_main = 0; |
| 4193 | esym.weakext = 0; |
| 4194 | esym.reserved = 0; |
| 4195 | esym.ifd = ifdNil; |
| 4196 | esym.asym.iss = issNil; |
| 4197 | esym.asym.st = stLocal; |
| 4198 | esym.asym.reserved = 0; |
| 4199 | esym.asym.index = indexNil; |
| 4200 | for (i = 0; i < 8; i++) |
| 4201 | { |
| 4202 | esym.asym.sc = sc[i]; |
| 4203 | s = bfd_get_section_by_name (abfd, name[i]); |
| 4204 | if (s != NULL) |
| 4205 | { |
| 4206 | esym.asym.value = s->vma; |
| 4207 | last = s->vma + s->_raw_size; |
| 4208 | } |
| 4209 | else |
| 4210 | esym.asym.value = last; |
| 4211 | |
| 4212 | if (! bfd_ecoff_debug_one_external (abfd, &debug, swap, |
| 4213 | name[i], &esym)) |
| 4214 | return false; |
| 4215 | } |
| 4216 | } |
| 4217 | |
| 4218 | for (p = o->link_order_head; |
| 4219 | p != (struct bfd_link_order *) NULL; |
| 4220 | p = p->next) |
| 4221 | { |
| 4222 | asection *input_section; |
| 4223 | bfd *input_bfd; |
| 4224 | const struct ecoff_debug_swap *input_swap; |
| 4225 | struct ecoff_debug_info input_debug; |
| 4226 | char *eraw_src; |
| 4227 | char *eraw_end; |
| 4228 | |
| 4229 | if (p->type != bfd_indirect_link_order) |
| 4230 | { |
| 4231 | if (p->type == bfd_fill_link_order) |
| 4232 | continue; |
| 4233 | abort (); |
| 4234 | } |
| 4235 | |
| 4236 | input_section = p->u.indirect.section; |
| 4237 | input_bfd = input_section->owner; |
| 4238 | |
| 4239 | if (bfd_get_flavour (input_bfd) != bfd_target_elf_flavour |
| 4240 | || (get_elf_backend_data (input_bfd) |
| 4241 | ->elf_backend_ecoff_debug_swap) == NULL) |
| 4242 | { |
| 4243 | /* I don't know what a non ALPHA ELF bfd would be |
| 4244 | doing with a .mdebug section, but I don't really |
| 4245 | want to deal with it. */ |
| 4246 | continue; |
| 4247 | } |
| 4248 | |
| 4249 | input_swap = (get_elf_backend_data (input_bfd) |
| 4250 | ->elf_backend_ecoff_debug_swap); |
| 4251 | |
| 4252 | BFD_ASSERT (p->size == input_section->_raw_size); |
| 4253 | |
| 4254 | /* The ECOFF linking code expects that we have already |
| 4255 | read in the debugging information and set up an |
| 4256 | ecoff_debug_info structure, so we do that now. */ |
| 4257 | if (!elf64_alpha_read_ecoff_info (input_bfd, input_section, |
| 4258 | &input_debug)) |
| 4259 | return false; |
| 4260 | |
| 4261 | if (! (bfd_ecoff_debug_accumulate |
| 4262 | (mdebug_handle, abfd, &debug, swap, input_bfd, |
| 4263 | &input_debug, input_swap, info))) |
| 4264 | return false; |
| 4265 | |
| 4266 | /* Loop through the external symbols. For each one with |
| 4267 | interesting information, try to find the symbol in |
| 4268 | the linker global hash table and save the information |
| 4269 | for the output external symbols. */ |
| 4270 | eraw_src = input_debug.external_ext; |
| 4271 | eraw_end = (eraw_src |
| 4272 | + (input_debug.symbolic_header.iextMax |
| 4273 | * input_swap->external_ext_size)); |
| 4274 | for (; |
| 4275 | eraw_src < eraw_end; |
| 4276 | eraw_src += input_swap->external_ext_size) |
| 4277 | { |
| 4278 | EXTR ext; |
| 4279 | const char *name; |
| 4280 | struct alpha_elf_link_hash_entry *h; |
| 4281 | |
| 4282 | (*input_swap->swap_ext_in) (input_bfd, (PTR) eraw_src, &ext); |
| 4283 | if (ext.asym.sc == scNil |
| 4284 | || ext.asym.sc == scUndefined |
| 4285 | || ext.asym.sc == scSUndefined) |
| 4286 | continue; |
| 4287 | |
| 4288 | name = input_debug.ssext + ext.asym.iss; |
| 4289 | h = alpha_elf_link_hash_lookup (alpha_elf_hash_table (info), |
| 4290 | name, false, false, true); |
| 4291 | if (h == NULL || h->esym.ifd != -2) |
| 4292 | continue; |
| 4293 | |
| 4294 | if (ext.ifd != -1) |
| 4295 | { |
| 4296 | BFD_ASSERT (ext.ifd |
| 4297 | < input_debug.symbolic_header.ifdMax); |
| 4298 | ext.ifd = input_debug.ifdmap[ext.ifd]; |
| 4299 | } |
| 4300 | |
| 4301 | h->esym = ext; |
| 4302 | } |
| 4303 | |
| 4304 | /* Free up the information we just read. */ |
| 4305 | free (input_debug.line); |
| 4306 | free (input_debug.external_dnr); |
| 4307 | free (input_debug.external_pdr); |
| 4308 | free (input_debug.external_sym); |
| 4309 | free (input_debug.external_opt); |
| 4310 | free (input_debug.external_aux); |
| 4311 | free (input_debug.ss); |
| 4312 | free (input_debug.ssext); |
| 4313 | free (input_debug.external_fdr); |
| 4314 | free (input_debug.external_rfd); |
| 4315 | free (input_debug.external_ext); |
| 4316 | |
| 4317 | /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| 4318 | elf_link_input_bfd ignores this section. */ |
| 4319 | input_section->flags &=~ SEC_HAS_CONTENTS; |
| 4320 | } |
| 4321 | |
| 4322 | #ifdef ERIC_neverdef |
| 4323 | if (info->shared) |
| 4324 | { |
| 4325 | /* Create .rtproc section. */ |
| 4326 | rtproc_sec = bfd_get_section_by_name (abfd, ".rtproc"); |
| 4327 | if (rtproc_sec == NULL) |
| 4328 | { |
| 4329 | flagword flags = (SEC_HAS_CONTENTS |
| 4330 | | SEC_IN_MEMORY |
| 4331 | | SEC_LINKER_CREATED |
| 4332 | | SEC_READONLY); |
| 4333 | |
| 4334 | rtproc_sec = bfd_make_section (abfd, ".rtproc"); |
| 4335 | if (rtproc_sec == NULL |
| 4336 | || ! bfd_set_section_flags (abfd, rtproc_sec, flags) |
| 4337 | || ! bfd_set_section_alignment (abfd, rtproc_sec, 12)) |
| 4338 | return false; |
| 4339 | } |
| 4340 | |
| 4341 | if (! alpha_elf_create_procedure_table (mdebug_handle, abfd, |
| 4342 | info, rtproc_sec, &debug)) |
| 4343 | return false; |
| 4344 | } |
| 4345 | #endif |
| 4346 | |
| 4347 | |
| 4348 | /* Build the external symbol information. */ |
| 4349 | einfo.abfd = abfd; |
| 4350 | einfo.info = info; |
| 4351 | einfo.debug = &debug; |
| 4352 | einfo.swap = swap; |
| 4353 | einfo.failed = false; |
| 4354 | elf_link_hash_traverse (elf_hash_table (info), |
| 4355 | elf64_alpha_output_extsym, |
| 4356 | (PTR) &einfo); |
| 4357 | if (einfo.failed) |
| 4358 | return false; |
| 4359 | |
| 4360 | /* Set the size of the .mdebug section. */ |
| 4361 | o->_raw_size = bfd_ecoff_debug_size (abfd, &debug, swap); |
| 4362 | |
| 4363 | /* Skip this section later on (I don't think this currently |
| 4364 | matters, but someday it might). */ |
| 4365 | o->link_order_head = (struct bfd_link_order *) NULL; |
| 4366 | |
| 4367 | mdebug_sec = o; |
| 4368 | } |
| 4369 | |
| 4370 | #ifdef ERIC_neverdef |
| 4371 | if (strncmp (o->name, ".gptab.", sizeof ".gptab." - 1) == 0) |
| 4372 | { |
| 4373 | const char *subname; |
| 4374 | unsigned int c; |
| 4375 | Elf64_gptab *tab; |
| 4376 | Elf64_External_gptab *ext_tab; |
| 4377 | unsigned int i; |
| 4378 | |
| 4379 | /* The .gptab.sdata and .gptab.sbss sections hold |
| 4380 | information describing how the small data area would |
| 4381 | change depending upon the -G switch. These sections |
| 4382 | not used in executables files. */ |
| 4383 | if (! info->relocateable) |
| 4384 | { |
| 4385 | asection **secpp; |
| 4386 | |
| 4387 | for (p = o->link_order_head; |
| 4388 | p != (struct bfd_link_order *) NULL; |
| 4389 | p = p->next) |
| 4390 | { |
| 4391 | asection *input_section; |
| 4392 | |
| 4393 | if (p->type != bfd_indirect_link_order) |
| 4394 | { |
| 4395 | if (p->type == bfd_fill_link_order) |
| 4396 | continue; |
| 4397 | abort (); |
| 4398 | } |
| 4399 | |
| 4400 | input_section = p->u.indirect.section; |
| 4401 | |
| 4402 | /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| 4403 | elf_link_input_bfd ignores this section. */ |
| 4404 | input_section->flags &=~ SEC_HAS_CONTENTS; |
| 4405 | } |
| 4406 | |
| 4407 | /* Skip this section later on (I don't think this |
| 4408 | currently matters, but someday it might). */ |
| 4409 | o->link_order_head = (struct bfd_link_order *) NULL; |
| 4410 | |
| 4411 | /* Really remove the section. */ |
| 4412 | for (secpp = &abfd->sections; |
| 4413 | *secpp != o; |
| 4414 | secpp = &(*secpp)->next) |
| 4415 | ; |
| 4416 | *secpp = (*secpp)->next; |
| 4417 | --abfd->section_count; |
| 4418 | |
| 4419 | continue; |
| 4420 | } |
| 4421 | |
| 4422 | /* There is one gptab for initialized data, and one for |
| 4423 | uninitialized data. */ |
| 4424 | if (strcmp (o->name, ".gptab.sdata") == 0) |
| 4425 | gptab_data_sec = o; |
| 4426 | else if (strcmp (o->name, ".gptab.sbss") == 0) |
| 4427 | gptab_bss_sec = o; |
| 4428 | else |
| 4429 | { |
| 4430 | (*_bfd_error_handler) |
| 4431 | (_("%s: illegal section name `%s'"), |
| 4432 | bfd_get_filename (abfd), o->name); |
| 4433 | bfd_set_error (bfd_error_nonrepresentable_section); |
| 4434 | return false; |
| 4435 | } |
| 4436 | |
| 4437 | /* The linker script always combines .gptab.data and |
| 4438 | .gptab.sdata into .gptab.sdata, and likewise for |
| 4439 | .gptab.bss and .gptab.sbss. It is possible that there is |
| 4440 | no .sdata or .sbss section in the output file, in which |
| 4441 | case we must change the name of the output section. */ |
| 4442 | subname = o->name + sizeof ".gptab" - 1; |
| 4443 | if (bfd_get_section_by_name (abfd, subname) == NULL) |
| 4444 | { |
| 4445 | if (o == gptab_data_sec) |
| 4446 | o->name = ".gptab.data"; |
| 4447 | else |
| 4448 | o->name = ".gptab.bss"; |
| 4449 | subname = o->name + sizeof ".gptab" - 1; |
| 4450 | BFD_ASSERT (bfd_get_section_by_name (abfd, subname) != NULL); |
| 4451 | } |
| 4452 | |
| 4453 | /* Set up the first entry. */ |
| 4454 | c = 1; |
| 4455 | tab = (Elf64_gptab *) bfd_malloc (c * sizeof (Elf64_gptab)); |
| 4456 | if (tab == NULL) |
| 4457 | return false; |
| 4458 | tab[0].gt_header.gt_current_g_value = elf_gp_size (abfd); |
| 4459 | tab[0].gt_header.gt_unused = 0; |
| 4460 | |
| 4461 | /* Combine the input sections. */ |
| 4462 | for (p = o->link_order_head; |
| 4463 | p != (struct bfd_link_order *) NULL; |
| 4464 | p = p->next) |
| 4465 | { |
| 4466 | asection *input_section; |
| 4467 | bfd *input_bfd; |
| 4468 | bfd_size_type size; |
| 4469 | unsigned long last; |
| 4470 | bfd_size_type gpentry; |
| 4471 | |
| 4472 | if (p->type != bfd_indirect_link_order) |
| 4473 | { |
| 4474 | if (p->type == bfd_fill_link_order) |
| 4475 | continue; |
| 4476 | abort (); |
| 4477 | } |
| 4478 | |
| 4479 | input_section = p->u.indirect.section; |
| 4480 | input_bfd = input_section->owner; |
| 4481 | |
| 4482 | /* Combine the gptab entries for this input section one |
| 4483 | by one. We know that the input gptab entries are |
| 4484 | sorted by ascending -G value. */ |
| 4485 | size = bfd_section_size (input_bfd, input_section); |
| 4486 | last = 0; |
| 4487 | for (gpentry = sizeof (Elf64_External_gptab); |
| 4488 | gpentry < size; |
| 4489 | gpentry += sizeof (Elf64_External_gptab)) |
| 4490 | { |
| 4491 | Elf64_External_gptab ext_gptab; |
| 4492 | Elf64_gptab int_gptab; |
| 4493 | unsigned long val; |
| 4494 | unsigned long add; |
| 4495 | boolean exact; |
| 4496 | unsigned int look; |
| 4497 | |
| 4498 | if (! (bfd_get_section_contents |
| 4499 | (input_bfd, input_section, (PTR) &ext_gptab, |
| 4500 | gpentry, sizeof (Elf64_External_gptab)))) |
| 4501 | { |
| 4502 | free (tab); |
| 4503 | return false; |
| 4504 | } |
| 4505 | |
| 4506 | bfd_alpha_elf64_swap_gptab_in (input_bfd, &ext_gptab, |
| 4507 | &int_gptab); |
| 4508 | val = int_gptab.gt_entry.gt_g_value; |
| 4509 | add = int_gptab.gt_entry.gt_bytes - last; |
| 4510 | |
| 4511 | exact = false; |
| 4512 | for (look = 1; look < c; look++) |
| 4513 | { |
| 4514 | if (tab[look].gt_entry.gt_g_value >= val) |
| 4515 | tab[look].gt_entry.gt_bytes += add; |
| 4516 | |
| 4517 | if (tab[look].gt_entry.gt_g_value == val) |
| 4518 | exact = true; |
| 4519 | } |
| 4520 | |
| 4521 | if (! exact) |
| 4522 | { |
| 4523 | Elf64_gptab *new_tab; |
| 4524 | unsigned int max; |
| 4525 | |
| 4526 | /* We need a new table entry. */ |
| 4527 | new_tab = ((Elf64_gptab *) |
| 4528 | bfd_realloc ((PTR) tab, |
| 4529 | (c + 1) * sizeof (Elf64_gptab))); |
| 4530 | if (new_tab == NULL) |
| 4531 | { |
| 4532 | free (tab); |
| 4533 | return false; |
| 4534 | } |
| 4535 | tab = new_tab; |
| 4536 | tab[c].gt_entry.gt_g_value = val; |
| 4537 | tab[c].gt_entry.gt_bytes = add; |
| 4538 | |
| 4539 | /* Merge in the size for the next smallest -G |
| 4540 | value, since that will be implied by this new |
| 4541 | value. */ |
| 4542 | max = 0; |
| 4543 | for (look = 1; look < c; look++) |
| 4544 | { |
| 4545 | if (tab[look].gt_entry.gt_g_value < val |
| 4546 | && (max == 0 |
| 4547 | || (tab[look].gt_entry.gt_g_value |
| 4548 | > tab[max].gt_entry.gt_g_value))) |
| 4549 | max = look; |
| 4550 | } |
| 4551 | if (max != 0) |
| 4552 | tab[c].gt_entry.gt_bytes += |
| 4553 | tab[max].gt_entry.gt_bytes; |
| 4554 | |
| 4555 | ++c; |
| 4556 | } |
| 4557 | |
| 4558 | last = int_gptab.gt_entry.gt_bytes; |
| 4559 | } |
| 4560 | |
| 4561 | /* Hack: reset the SEC_HAS_CONTENTS flag so that |
| 4562 | elf_link_input_bfd ignores this section. */ |
| 4563 | input_section->flags &=~ SEC_HAS_CONTENTS; |
| 4564 | } |
| 4565 | |
| 4566 | /* The table must be sorted by -G value. */ |
| 4567 | if (c > 2) |
| 4568 | qsort (tab + 1, c - 1, sizeof (tab[0]), gptab_compare); |
| 4569 | |
| 4570 | /* Swap out the table. */ |
| 4571 | ext_tab = ((Elf64_External_gptab *) |
| 4572 | bfd_alloc (abfd, c * sizeof (Elf64_External_gptab))); |
| 4573 | if (ext_tab == NULL) |
| 4574 | { |
| 4575 | free (tab); |
| 4576 | return false; |
| 4577 | } |
| 4578 | |
| 4579 | for (i = 0; i < c; i++) |
| 4580 | bfd_alpha_elf64_swap_gptab_out (abfd, tab + i, ext_tab + i); |
| 4581 | free (tab); |
| 4582 | |
| 4583 | o->_raw_size = c * sizeof (Elf64_External_gptab); |
| 4584 | o->contents = (bfd_byte *) ext_tab; |
| 4585 | |
| 4586 | /* Skip this section later on (I don't think this currently |
| 4587 | matters, but someday it might). */ |
| 4588 | o->link_order_head = (struct bfd_link_order *) NULL; |
| 4589 | } |
| 4590 | #endif |
| 4591 | |
| 4592 | } |
| 4593 | |
| 4594 | /* Invoke the regular ELF backend linker to do all the work. */ |
| 4595 | if (! bfd_elf64_bfd_final_link (abfd, info)) |
| 4596 | return false; |
| 4597 | |
| 4598 | /* Now write out the computed sections. */ |
| 4599 | |
| 4600 | /* The .got subsections... */ |
| 4601 | { |
| 4602 | bfd *i, *dynobj = elf_hash_table(info)->dynobj; |
| 4603 | for (i = alpha_elf_hash_table(info)->got_list; |
| 4604 | i != NULL; |
| 4605 | i = alpha_elf_tdata(i)->got_link_next) |
| 4606 | { |
| 4607 | asection *sgot; |
| 4608 | |
| 4609 | /* elf_bfd_final_link already did everything in dynobj. */ |
| 4610 | if (i == dynobj) |
| 4611 | continue; |
| 4612 | |
| 4613 | sgot = alpha_elf_tdata(i)->got; |
| 4614 | if (! bfd_set_section_contents (abfd, sgot->output_section, |
| 4615 | sgot->contents, sgot->output_offset, |
| 4616 | sgot->_raw_size)) |
| 4617 | return false; |
| 4618 | } |
| 4619 | } |
| 4620 | |
| 4621 | #ifdef ERIC_neverdef |
| 4622 | if (reginfo_sec != (asection *) NULL) |
| 4623 | { |
| 4624 | Elf64_External_RegInfo ext; |
| 4625 | |
| 4626 | bfd_alpha_elf64_swap_reginfo_out (abfd, ®info, &ext); |
| 4627 | if (! bfd_set_section_contents (abfd, reginfo_sec, (PTR) &ext, |
| 4628 | (file_ptr) 0, sizeof ext)) |
| 4629 | return false; |
| 4630 | } |
| 4631 | #endif |
| 4632 | |
| 4633 | if (mdebug_sec != (asection *) NULL) |
| 4634 | { |
| 4635 | BFD_ASSERT (abfd->output_has_begun); |
| 4636 | if (! bfd_ecoff_write_accumulated_debug (mdebug_handle, abfd, &debug, |
| 4637 | swap, info, |
| 4638 | mdebug_sec->filepos)) |
| 4639 | return false; |
| 4640 | |
| 4641 | bfd_ecoff_debug_free (mdebug_handle, abfd, &debug, swap, info); |
| 4642 | } |
| 4643 | |
| 4644 | if (gptab_data_sec != (asection *) NULL) |
| 4645 | { |
| 4646 | if (! bfd_set_section_contents (abfd, gptab_data_sec, |
| 4647 | gptab_data_sec->contents, |
| 4648 | (file_ptr) 0, |
| 4649 | gptab_data_sec->_raw_size)) |
| 4650 | return false; |
| 4651 | } |
| 4652 | |
| 4653 | if (gptab_bss_sec != (asection *) NULL) |
| 4654 | { |
| 4655 | if (! bfd_set_section_contents (abfd, gptab_bss_sec, |
| 4656 | gptab_bss_sec->contents, |
| 4657 | (file_ptr) 0, |
| 4658 | gptab_bss_sec->_raw_size)) |
| 4659 | return false; |
| 4660 | } |
| 4661 | |
| 4662 | return true; |
| 4663 | } |
| 4664 | \f |
| 4665 | /* ECOFF swapping routines. These are used when dealing with the |
| 4666 | .mdebug section, which is in the ECOFF debugging format. Copied |
| 4667 | from elf32-mips.c. */ |
| 4668 | static const struct ecoff_debug_swap |
| 4669 | elf64_alpha_ecoff_debug_swap = |
| 4670 | { |
| 4671 | /* Symbol table magic number. */ |
| 4672 | magicSym2, |
| 4673 | /* Alignment of debugging information. E.g., 4. */ |
| 4674 | 8, |
| 4675 | /* Sizes of external symbolic information. */ |
| 4676 | sizeof (struct hdr_ext), |
| 4677 | sizeof (struct dnr_ext), |
| 4678 | sizeof (struct pdr_ext), |
| 4679 | sizeof (struct sym_ext), |
| 4680 | sizeof (struct opt_ext), |
| 4681 | sizeof (struct fdr_ext), |
| 4682 | sizeof (struct rfd_ext), |
| 4683 | sizeof (struct ext_ext), |
| 4684 | /* Functions to swap in external symbolic data. */ |
| 4685 | ecoff_swap_hdr_in, |
| 4686 | ecoff_swap_dnr_in, |
| 4687 | ecoff_swap_pdr_in, |
| 4688 | ecoff_swap_sym_in, |
| 4689 | ecoff_swap_opt_in, |
| 4690 | ecoff_swap_fdr_in, |
| 4691 | ecoff_swap_rfd_in, |
| 4692 | ecoff_swap_ext_in, |
| 4693 | _bfd_ecoff_swap_tir_in, |
| 4694 | _bfd_ecoff_swap_rndx_in, |
| 4695 | /* Functions to swap out external symbolic data. */ |
| 4696 | ecoff_swap_hdr_out, |
| 4697 | ecoff_swap_dnr_out, |
| 4698 | ecoff_swap_pdr_out, |
| 4699 | ecoff_swap_sym_out, |
| 4700 | ecoff_swap_opt_out, |
| 4701 | ecoff_swap_fdr_out, |
| 4702 | ecoff_swap_rfd_out, |
| 4703 | ecoff_swap_ext_out, |
| 4704 | _bfd_ecoff_swap_tir_out, |
| 4705 | _bfd_ecoff_swap_rndx_out, |
| 4706 | /* Function to read in symbolic data. */ |
| 4707 | elf64_alpha_read_ecoff_info |
| 4708 | }; |
| 4709 | \f |
| 4710 | #define TARGET_LITTLE_SYM bfd_elf64_alpha_vec |
| 4711 | #define TARGET_LITTLE_NAME "elf64-alpha" |
| 4712 | #define ELF_ARCH bfd_arch_alpha |
| 4713 | #define ELF_MACHINE_CODE EM_ALPHA |
| 4714 | #define ELF_MAXPAGESIZE 0x10000 |
| 4715 | |
| 4716 | #define bfd_elf64_bfd_link_hash_table_create \ |
| 4717 | elf64_alpha_bfd_link_hash_table_create |
| 4718 | |
| 4719 | #define bfd_elf64_bfd_reloc_type_lookup \ |
| 4720 | elf64_alpha_bfd_reloc_type_lookup |
| 4721 | #define elf_info_to_howto \ |
| 4722 | elf64_alpha_info_to_howto |
| 4723 | |
| 4724 | #define bfd_elf64_mkobject \ |
| 4725 | elf64_alpha_mkobject |
| 4726 | #define elf_backend_object_p \ |
| 4727 | elf64_alpha_object_p |
| 4728 | |
| 4729 | #define elf_backend_section_from_shdr \ |
| 4730 | elf64_alpha_section_from_shdr |
| 4731 | #define elf_backend_fake_sections \ |
| 4732 | elf64_alpha_fake_sections |
| 4733 | |
| 4734 | #define bfd_elf64_bfd_is_local_label_name \ |
| 4735 | elf64_alpha_is_local_label_name |
| 4736 | #define bfd_elf64_find_nearest_line \ |
| 4737 | elf64_alpha_find_nearest_line |
| 4738 | #define bfd_elf64_bfd_relax_section \ |
| 4739 | elf64_alpha_relax_section |
| 4740 | |
| 4741 | #define elf_backend_add_symbol_hook \ |
| 4742 | elf64_alpha_add_symbol_hook |
| 4743 | #define elf_backend_check_relocs \ |
| 4744 | elf64_alpha_check_relocs |
| 4745 | #define elf_backend_create_dynamic_sections \ |
| 4746 | elf64_alpha_create_dynamic_sections |
| 4747 | #define elf_backend_adjust_dynamic_symbol \ |
| 4748 | elf64_alpha_adjust_dynamic_symbol |
| 4749 | #define elf_backend_always_size_sections \ |
| 4750 | elf64_alpha_always_size_sections |
| 4751 | #define elf_backend_size_dynamic_sections \ |
| 4752 | elf64_alpha_size_dynamic_sections |
| 4753 | #define elf_backend_relocate_section \ |
| 4754 | elf64_alpha_relocate_section |
| 4755 | #define elf_backend_finish_dynamic_symbol \ |
| 4756 | elf64_alpha_finish_dynamic_symbol |
| 4757 | #define elf_backend_finish_dynamic_sections \ |
| 4758 | elf64_alpha_finish_dynamic_sections |
| 4759 | #define bfd_elf64_bfd_final_link \ |
| 4760 | elf64_alpha_final_link |
| 4761 | |
| 4762 | #define elf_backend_ecoff_debug_swap \ |
| 4763 | &elf64_alpha_ecoff_debug_swap |
| 4764 | |
| 4765 | /* |
| 4766 | * A few constants that determine how the .plt section is set up. |
| 4767 | */ |
| 4768 | #define elf_backend_want_got_plt 0 |
| 4769 | #define elf_backend_plt_readonly 0 |
| 4770 | #define elf_backend_want_plt_sym 1 |
| 4771 | #define elf_backend_got_header_size 0 |
| 4772 | #define elf_backend_plt_header_size PLT_HEADER_SIZE |
| 4773 | |
| 4774 | #include "elf64-target.h" |