| 1 | /* i370-specific support for 32-bit ELF |
| 2 | Copyright 1994, 1995, 1996, 1997, 1998, 2000, 2001, 2002 |
| 3 | Free Software Foundation, Inc. |
| 4 | Written by Ian Lance Taylor, Cygnus Support. |
| 5 | Hacked by Linas Vepstas for i370 linas@linas.org |
| 6 | |
| 7 | This file is part of BFD, the Binary File Descriptor library. |
| 8 | |
| 9 | This program is free software; you can redistribute it and/or modify |
| 10 | it under the terms of the GNU General Public License as published by |
| 11 | the Free Software Foundation; either version 2 of the License, or |
| 12 | (at your option) any later version. |
| 13 | |
| 14 | This program is distributed in the hope that it will be useful, |
| 15 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | GNU General Public License for more details. |
| 18 | |
| 19 | You should have received a copy of the GNU General Public License |
| 20 | along with this program; if not, write to the Free Software |
| 21 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 22 | |
| 23 | /* This file is based on a preliminary PowerPC ELF ABI. |
| 24 | But its been hacked on for the IBM 360/370 architectures. |
| 25 | Basically, the 31bit relocation works, and just about everything |
| 26 | else is a wild card. In particular, don't expect shared libs or |
| 27 | dynamic loading to work ... its never been tested ... |
| 28 | */ |
| 29 | |
| 30 | #include "bfd.h" |
| 31 | #include "sysdep.h" |
| 32 | #include "bfdlink.h" |
| 33 | #include "libbfd.h" |
| 34 | #include "elf-bfd.h" |
| 35 | #include "elf/i370.h" |
| 36 | |
| 37 | static reloc_howto_type *i370_elf_howto_table[ (int)R_I370_max ]; |
| 38 | |
| 39 | static reloc_howto_type i370_elf_howto_raw[] = |
| 40 | { |
| 41 | /* This reloc does nothing. */ |
| 42 | HOWTO (R_I370_NONE, /* type */ |
| 43 | 0, /* rightshift */ |
| 44 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 45 | 32, /* bitsize */ |
| 46 | FALSE, /* pc_relative */ |
| 47 | 0, /* bitpos */ |
| 48 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 49 | bfd_elf_generic_reloc, /* special_function */ |
| 50 | "R_I370_NONE", /* name */ |
| 51 | FALSE, /* partial_inplace */ |
| 52 | 0, /* src_mask */ |
| 53 | 0, /* dst_mask */ |
| 54 | FALSE), /* pcrel_offset */ |
| 55 | |
| 56 | /* A standard 31 bit relocation. */ |
| 57 | HOWTO (R_I370_ADDR31, /* type */ |
| 58 | 0, /* rightshift */ |
| 59 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 60 | 31, /* bitsize */ |
| 61 | FALSE, /* pc_relative */ |
| 62 | 0, /* bitpos */ |
| 63 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 64 | bfd_elf_generic_reloc, /* special_function */ |
| 65 | "R_I370_ADDR31", /* name */ |
| 66 | FALSE, /* partial_inplace */ |
| 67 | 0, /* src_mask */ |
| 68 | 0x7fffffff, /* dst_mask */ |
| 69 | FALSE), /* pcrel_offset */ |
| 70 | |
| 71 | /* A standard 32 bit relocation. */ |
| 72 | HOWTO (R_I370_ADDR32, /* type */ |
| 73 | 0, /* rightshift */ |
| 74 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 75 | 32, /* bitsize */ |
| 76 | FALSE, /* pc_relative */ |
| 77 | 0, /* bitpos */ |
| 78 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 79 | bfd_elf_generic_reloc, /* special_function */ |
| 80 | "R_I370_ADDR32", /* name */ |
| 81 | FALSE, /* partial_inplace */ |
| 82 | 0, /* src_mask */ |
| 83 | 0xffffffff, /* dst_mask */ |
| 84 | FALSE), /* pcrel_offset */ |
| 85 | |
| 86 | /* A standard 16 bit relocation. */ |
| 87 | HOWTO (R_I370_ADDR16, /* type */ |
| 88 | 0, /* rightshift */ |
| 89 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 90 | 16, /* bitsize */ |
| 91 | FALSE, /* pc_relative */ |
| 92 | 0, /* bitpos */ |
| 93 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 94 | bfd_elf_generic_reloc, /* special_function */ |
| 95 | "R_I370_ADDR16", /* name */ |
| 96 | FALSE, /* partial_inplace */ |
| 97 | 0, /* src_mask */ |
| 98 | 0xffff, /* dst_mask */ |
| 99 | FALSE), /* pcrel_offset */ |
| 100 | |
| 101 | /* 31-bit PC relative */ |
| 102 | HOWTO (R_I370_REL31, /* type */ |
| 103 | 0, /* rightshift */ |
| 104 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 105 | 31, /* bitsize */ |
| 106 | TRUE, /* pc_relative */ |
| 107 | 0, /* bitpos */ |
| 108 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 109 | bfd_elf_generic_reloc, /* special_function */ |
| 110 | "R_I370_REL31", /* name */ |
| 111 | FALSE, /* partial_inplace */ |
| 112 | 0, /* src_mask */ |
| 113 | 0x7fffffff, /* dst_mask */ |
| 114 | TRUE), /* pcrel_offset */ |
| 115 | |
| 116 | /* 32-bit PC relative */ |
| 117 | HOWTO (R_I370_REL32, /* type */ |
| 118 | 0, /* rightshift */ |
| 119 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 120 | 32, /* bitsize */ |
| 121 | TRUE, /* pc_relative */ |
| 122 | 0, /* bitpos */ |
| 123 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 124 | bfd_elf_generic_reloc, /* special_function */ |
| 125 | "R_I370_REL32", /* name */ |
| 126 | FALSE, /* partial_inplace */ |
| 127 | 0, /* src_mask */ |
| 128 | 0xffffffff, /* dst_mask */ |
| 129 | TRUE), /* pcrel_offset */ |
| 130 | |
| 131 | /* A standard 12 bit relocation. */ |
| 132 | HOWTO (R_I370_ADDR12, /* type */ |
| 133 | 0, /* rightshift */ |
| 134 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 135 | 12, /* bitsize */ |
| 136 | FALSE, /* pc_relative */ |
| 137 | 0, /* bitpos */ |
| 138 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 139 | bfd_elf_generic_reloc, /* special_function */ |
| 140 | "R_I370_ADDR12", /* name */ |
| 141 | FALSE, /* partial_inplace */ |
| 142 | 0, /* src_mask */ |
| 143 | 0xfff, /* dst_mask */ |
| 144 | FALSE), /* pcrel_offset */ |
| 145 | |
| 146 | /* 12-bit PC relative */ |
| 147 | HOWTO (R_I370_REL12, /* type */ |
| 148 | 0, /* rightshift */ |
| 149 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 150 | 12, /* bitsize */ |
| 151 | TRUE, /* pc_relative */ |
| 152 | 0, /* bitpos */ |
| 153 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 154 | bfd_elf_generic_reloc, /* special_function */ |
| 155 | "R_I370_REL12", /* name */ |
| 156 | FALSE, /* partial_inplace */ |
| 157 | 0, /* src_mask */ |
| 158 | 0xfff, /* dst_mask */ |
| 159 | TRUE), /* pcrel_offset */ |
| 160 | |
| 161 | /* A standard 8 bit relocation. */ |
| 162 | HOWTO (R_I370_ADDR8, /* type */ |
| 163 | 0, /* rightshift */ |
| 164 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 165 | 8, /* bitsize */ |
| 166 | FALSE, /* pc_relative */ |
| 167 | 0, /* bitpos */ |
| 168 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 169 | bfd_elf_generic_reloc, /* special_function */ |
| 170 | "R_I370_ADDR8", /* name */ |
| 171 | FALSE, /* partial_inplace */ |
| 172 | 0, /* src_mask */ |
| 173 | 0xff, /* dst_mask */ |
| 174 | FALSE), /* pcrel_offset */ |
| 175 | |
| 176 | /* 8-bit PC relative */ |
| 177 | HOWTO (R_I370_REL8, /* type */ |
| 178 | 0, /* rightshift */ |
| 179 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 180 | 8, /* bitsize */ |
| 181 | TRUE, /* pc_relative */ |
| 182 | 0, /* bitpos */ |
| 183 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 184 | bfd_elf_generic_reloc, /* special_function */ |
| 185 | "R_I370_REL8", /* name */ |
| 186 | FALSE, /* partial_inplace */ |
| 187 | 0, /* src_mask */ |
| 188 | 0xff, /* dst_mask */ |
| 189 | TRUE), /* pcrel_offset */ |
| 190 | |
| 191 | /* This is used only by the dynamic linker. The symbol should exist |
| 192 | both in the object being run and in some shared library. The |
| 193 | dynamic linker copies the data addressed by the symbol from the |
| 194 | shared library into the object, because the object being |
| 195 | run has to have the data at some particular address. */ |
| 196 | HOWTO (R_I370_COPY, /* type */ |
| 197 | 0, /* rightshift */ |
| 198 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 199 | 32, /* bitsize */ |
| 200 | FALSE, /* pc_relative */ |
| 201 | 0, /* bitpos */ |
| 202 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 203 | bfd_elf_generic_reloc, /* special_function */ |
| 204 | "R_I370_COPY", /* name */ |
| 205 | FALSE, /* partial_inplace */ |
| 206 | 0, /* src_mask */ |
| 207 | 0, /* dst_mask */ |
| 208 | FALSE), /* pcrel_offset */ |
| 209 | |
| 210 | /* Used only by the dynamic linker. When the object is run, this |
| 211 | longword is set to the load address of the object, plus the |
| 212 | addend. */ |
| 213 | HOWTO (R_I370_RELATIVE, /* type */ |
| 214 | 0, /* rightshift */ |
| 215 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 216 | 32, /* bitsize */ |
| 217 | FALSE, /* pc_relative */ |
| 218 | 0, /* bitpos */ |
| 219 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 220 | bfd_elf_generic_reloc, /* special_function */ |
| 221 | "R_I370_RELATIVE", /* name */ |
| 222 | FALSE, /* partial_inplace */ |
| 223 | 0, /* src_mask */ |
| 224 | 0xffffffff, /* dst_mask */ |
| 225 | FALSE), /* pcrel_offset */ |
| 226 | |
| 227 | }; |
| 228 | \f |
| 229 | static void i370_elf_howto_init |
| 230 | PARAMS ((void)); |
| 231 | static reloc_howto_type *i370_elf_reloc_type_lookup |
| 232 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 233 | static void i370_elf_info_to_howto |
| 234 | PARAMS ((bfd *abfd, arelent *cache_ptr, Elf_Internal_Rela *dst)); |
| 235 | static bfd_boolean i370_elf_set_private_flags |
| 236 | PARAMS ((bfd *, flagword)); |
| 237 | \f |
| 238 | /* Initialize the i370_elf_howto_table, so that linear accesses can be done. */ |
| 239 | |
| 240 | static void |
| 241 | i370_elf_howto_init () |
| 242 | { |
| 243 | unsigned int i, type; |
| 244 | |
| 245 | for (i = 0; i < sizeof (i370_elf_howto_raw) / sizeof (i370_elf_howto_raw[0]); i++) |
| 246 | { |
| 247 | type = i370_elf_howto_raw[i].type; |
| 248 | BFD_ASSERT (type < sizeof (i370_elf_howto_table) / sizeof (i370_elf_howto_table[0])); |
| 249 | i370_elf_howto_table[type] = &i370_elf_howto_raw[i]; |
| 250 | } |
| 251 | } |
| 252 | \f |
| 253 | static reloc_howto_type * |
| 254 | i370_elf_reloc_type_lookup (abfd, code) |
| 255 | bfd *abfd ATTRIBUTE_UNUSED; |
| 256 | bfd_reloc_code_real_type code; |
| 257 | { |
| 258 | enum i370_reloc_type i370_reloc = R_I370_NONE; |
| 259 | |
| 260 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ |
| 261 | i370_elf_howto_init (); |
| 262 | |
| 263 | switch ((int)code) |
| 264 | { |
| 265 | default: |
| 266 | return (reloc_howto_type *)NULL; |
| 267 | |
| 268 | case BFD_RELOC_NONE: i370_reloc = R_I370_NONE; break; |
| 269 | case BFD_RELOC_32: i370_reloc = R_I370_ADDR31; break; |
| 270 | case BFD_RELOC_16: i370_reloc = R_I370_ADDR16; break; |
| 271 | case BFD_RELOC_32_PCREL: i370_reloc = R_I370_REL31; break; |
| 272 | case BFD_RELOC_CTOR: i370_reloc = R_I370_ADDR31; break; |
| 273 | case BFD_RELOC_I370_D12: i370_reloc = R_I370_ADDR12; break; |
| 274 | } |
| 275 | |
| 276 | return i370_elf_howto_table[ (int)i370_reloc ]; |
| 277 | }; |
| 278 | |
| 279 | static bfd_boolean i370_elf_merge_private_bfd_data |
| 280 | PARAMS ((bfd *, bfd *)); |
| 281 | static bfd_boolean i370_elf_relocate_section |
| 282 | PARAMS ((bfd *, struct bfd_link_info *info, bfd *, asection *, bfd_byte *, |
| 283 | Elf_Internal_Rela *relocs, Elf_Internal_Sym *local_syms, |
| 284 | asection **)); |
| 285 | static void i370_elf_post_process_headers |
| 286 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 287 | static bfd_boolean i370_elf_create_dynamic_sections |
| 288 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 289 | static bfd_boolean i370_elf_section_from_shdr |
| 290 | PARAMS ((bfd *, Elf_Internal_Shdr *, const char *)); |
| 291 | static bfd_boolean i370_elf_fake_sections |
| 292 | PARAMS ((bfd *, Elf_Internal_Shdr *, asection *)); |
| 293 | #if 0 |
| 294 | static elf_linker_section_t *i370_elf_create_linker_section |
| 295 | PARAMS ((bfd *abfd, struct bfd_link_info *info, |
| 296 | enum elf_linker_section_enum)); |
| 297 | #endif |
| 298 | static bfd_boolean i370_elf_check_relocs |
| 299 | PARAMS ((bfd *, struct bfd_link_info *, asection *, |
| 300 | const Elf_Internal_Rela *)); |
| 301 | static bfd_boolean i370_elf_adjust_dynamic_symbol |
| 302 | PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *)); |
| 303 | static bfd_boolean i370_elf_adjust_dynindx |
| 304 | PARAMS ((struct elf_link_hash_entry *, PTR)); |
| 305 | static bfd_boolean i370_elf_size_dynamic_sections |
| 306 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 307 | static bfd_boolean i370_elf_finish_dynamic_sections |
| 308 | PARAMS ((bfd *, struct bfd_link_info *)); |
| 309 | |
| 310 | /* The name of the dynamic interpreter. This is put in the .interp |
| 311 | section. */ |
| 312 | |
| 313 | #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so" |
| 314 | |
| 315 | /* Set the howto pointer for an i370 ELF reloc. */ |
| 316 | |
| 317 | static void |
| 318 | i370_elf_info_to_howto (abfd, cache_ptr, dst) |
| 319 | bfd *abfd ATTRIBUTE_UNUSED; |
| 320 | arelent *cache_ptr; |
| 321 | Elf_Internal_Rela *dst; |
| 322 | { |
| 323 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table */ |
| 324 | i370_elf_howto_init (); |
| 325 | |
| 326 | BFD_ASSERT (ELF32_R_TYPE (dst->r_info) < (unsigned int) R_I370_max); |
| 327 | cache_ptr->howto = i370_elf_howto_table[ELF32_R_TYPE (dst->r_info)]; |
| 328 | } |
| 329 | |
| 330 | /* hack alert -- the following several routines look generic to me ... |
| 331 | * why are we bothering with them ??? |
| 332 | */ |
| 333 | /* Function to set whether a module needs the -mrelocatable bit set. */ |
| 334 | static bfd_boolean |
| 335 | i370_elf_set_private_flags (abfd, flags) |
| 336 | bfd *abfd; |
| 337 | flagword flags; |
| 338 | { |
| 339 | BFD_ASSERT (!elf_flags_init (abfd) |
| 340 | || elf_elfheader (abfd)->e_flags == flags); |
| 341 | |
| 342 | elf_elfheader (abfd)->e_flags = flags; |
| 343 | elf_flags_init (abfd) = TRUE; |
| 344 | return TRUE; |
| 345 | } |
| 346 | |
| 347 | /* Merge backend specific data from an object file to the output |
| 348 | object file when linking */ |
| 349 | static bfd_boolean |
| 350 | i370_elf_merge_private_bfd_data (ibfd, obfd) |
| 351 | bfd *ibfd; |
| 352 | bfd *obfd; |
| 353 | { |
| 354 | flagword old_flags; |
| 355 | flagword new_flags; |
| 356 | |
| 357 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 358 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 359 | return TRUE; |
| 360 | |
| 361 | new_flags = elf_elfheader (ibfd)->e_flags; |
| 362 | old_flags = elf_elfheader (obfd)->e_flags; |
| 363 | if (!elf_flags_init (obfd)) /* First call, no flags set */ |
| 364 | { |
| 365 | elf_flags_init (obfd) = TRUE; |
| 366 | elf_elfheader (obfd)->e_flags = new_flags; |
| 367 | } |
| 368 | |
| 369 | else if (new_flags == old_flags) /* Compatible flags are ok */ |
| 370 | ; |
| 371 | |
| 372 | else /* Incompatible flags */ |
| 373 | { |
| 374 | (*_bfd_error_handler) |
| 375 | ("%s: uses different e_flags (0x%lx) fields than previous modules (0x%lx)", |
| 376 | bfd_archive_filename (ibfd), (long) new_flags, (long) old_flags); |
| 377 | |
| 378 | bfd_set_error (bfd_error_bad_value); |
| 379 | return FALSE; |
| 380 | } |
| 381 | |
| 382 | return TRUE; |
| 383 | } |
| 384 | \f |
| 385 | /* Handle an i370 specific section when reading an object file. This |
| 386 | is called when elfcode.h finds a section with an unknown type. */ |
| 387 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 388 | * certainly does the wrong thing. Its here simply because it does |
| 389 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 390 | */ |
| 391 | |
| 392 | static bfd_boolean |
| 393 | i370_elf_section_from_shdr (abfd, hdr, name) |
| 394 | bfd *abfd; |
| 395 | Elf_Internal_Shdr *hdr; |
| 396 | const char *name; |
| 397 | { |
| 398 | asection *newsect; |
| 399 | flagword flags; |
| 400 | |
| 401 | if (! _bfd_elf_make_section_from_shdr (abfd, hdr, name)) |
| 402 | return FALSE; |
| 403 | |
| 404 | newsect = hdr->bfd_section; |
| 405 | flags = bfd_get_section_flags (abfd, newsect); |
| 406 | if (hdr->sh_flags & SHF_EXCLUDE) |
| 407 | flags |= SEC_EXCLUDE; |
| 408 | |
| 409 | if (hdr->sh_type == SHT_ORDERED) |
| 410 | flags |= SEC_SORT_ENTRIES; |
| 411 | |
| 412 | bfd_set_section_flags (abfd, newsect, flags); |
| 413 | return TRUE; |
| 414 | } |
| 415 | \f |
| 416 | /* Set up any other section flags and such that may be necessary. */ |
| 417 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 418 | * certainly does the wrong thing. Its here simply because it does |
| 419 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 420 | */ |
| 421 | |
| 422 | static bfd_boolean |
| 423 | i370_elf_fake_sections (abfd, shdr, asect) |
| 424 | bfd *abfd ATTRIBUTE_UNUSED; |
| 425 | Elf_Internal_Shdr *shdr; |
| 426 | asection *asect; |
| 427 | { |
| 428 | if ((asect->flags & SEC_EXCLUDE) != 0) |
| 429 | shdr->sh_flags |= SHF_EXCLUDE; |
| 430 | |
| 431 | if ((asect->flags & SEC_SORT_ENTRIES) != 0) |
| 432 | shdr->sh_type = SHT_ORDERED; |
| 433 | |
| 434 | return TRUE; |
| 435 | } |
| 436 | \f |
| 437 | #if 0 |
| 438 | /* Create a special linker section */ |
| 439 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 440 | * certainly does the wrong thing. Its here simply because it does |
| 441 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 442 | */ |
| 443 | |
| 444 | static elf_linker_section_t * |
| 445 | i370_elf_create_linker_section (abfd, info, which) |
| 446 | bfd *abfd; |
| 447 | struct bfd_link_info *info; |
| 448 | enum elf_linker_section_enum which; |
| 449 | { |
| 450 | bfd *dynobj = elf_hash_table (info)->dynobj; |
| 451 | elf_linker_section_t *lsect; |
| 452 | |
| 453 | /* Record the first bfd section that needs the special section */ |
| 454 | if (!dynobj) |
| 455 | dynobj = elf_hash_table (info)->dynobj = abfd; |
| 456 | |
| 457 | /* If this is the first time, create the section */ |
| 458 | lsect = elf_linker_section (dynobj, which); |
| 459 | if (!lsect) |
| 460 | { |
| 461 | elf_linker_section_t defaults; |
| 462 | static elf_linker_section_t zero_section; |
| 463 | |
| 464 | defaults = zero_section; |
| 465 | defaults.which = which; |
| 466 | defaults.hole_written_p = FALSE; |
| 467 | defaults.alignment = 2; |
| 468 | |
| 469 | /* Both of these sections are (technically) created by the user |
| 470 | putting data in them, so they shouldn't be marked |
| 471 | SEC_LINKER_CREATED. |
| 472 | |
| 473 | The linker creates them so it has somewhere to attach their |
| 474 | respective symbols. In fact, if they were empty it would |
| 475 | be OK to leave the symbol set to 0 (or any random number), because |
| 476 | the appropriate register should never be used. */ |
| 477 | defaults.flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 478 | | SEC_IN_MEMORY); |
| 479 | |
| 480 | switch (which) |
| 481 | { |
| 482 | default: |
| 483 | (*_bfd_error_handler) ("%s: Unknown special linker type %d", |
| 484 | bfd_archive_filename (abfd), |
| 485 | (int) which); |
| 486 | |
| 487 | bfd_set_error (bfd_error_bad_value); |
| 488 | return (elf_linker_section_t *)0; |
| 489 | |
| 490 | case LINKER_SECTION_SDATA: /* .sdata/.sbss section */ |
| 491 | defaults.name = ".sdata"; |
| 492 | defaults.rel_name = ".rela.sdata"; |
| 493 | defaults.bss_name = ".sbss"; |
| 494 | defaults.sym_name = "_SDA_BASE_"; |
| 495 | defaults.sym_offset = 32768; |
| 496 | break; |
| 497 | |
| 498 | case LINKER_SECTION_SDATA2: /* .sdata2/.sbss2 section */ |
| 499 | defaults.name = ".sdata2"; |
| 500 | defaults.rel_name = ".rela.sdata2"; |
| 501 | defaults.bss_name = ".sbss2"; |
| 502 | defaults.sym_name = "_SDA2_BASE_"; |
| 503 | defaults.sym_offset = 32768; |
| 504 | defaults.flags |= SEC_READONLY; |
| 505 | break; |
| 506 | } |
| 507 | |
| 508 | lsect = _bfd_elf_create_linker_section (abfd, info, which, &defaults); |
| 509 | } |
| 510 | |
| 511 | return lsect; |
| 512 | } |
| 513 | #endif |
| 514 | \f |
| 515 | /* We have to create .dynsbss and .rela.sbss here so that they get mapped |
| 516 | to output sections (just like _bfd_elf_create_dynamic_sections has |
| 517 | to create .dynbss and .rela.bss). */ |
| 518 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 519 | * certainly does the wrong thing. Its here simply because it does |
| 520 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 521 | */ |
| 522 | |
| 523 | static bfd_boolean |
| 524 | i370_elf_create_dynamic_sections (abfd, info) |
| 525 | bfd *abfd; |
| 526 | struct bfd_link_info *info; |
| 527 | { |
| 528 | register asection *s; |
| 529 | flagword flags; |
| 530 | |
| 531 | if (!_bfd_elf_create_dynamic_sections(abfd, info)) |
| 532 | return FALSE; |
| 533 | |
| 534 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 535 | | SEC_LINKER_CREATED); |
| 536 | |
| 537 | s = bfd_make_section (abfd, ".dynsbss"); |
| 538 | if (s == NULL |
| 539 | || ! bfd_set_section_flags (abfd, s, SEC_ALLOC)) |
| 540 | return FALSE; |
| 541 | |
| 542 | if (! info->shared) |
| 543 | { |
| 544 | s = bfd_make_section (abfd, ".rela.sbss"); |
| 545 | if (s == NULL |
| 546 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 547 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 548 | return FALSE; |
| 549 | } |
| 550 | |
| 551 | /* xxx beats me, seem to need a rela.text ... */ |
| 552 | s = bfd_make_section (abfd, ".rela.text"); |
| 553 | if (s == NULL |
| 554 | || ! bfd_set_section_flags (abfd, s, flags | SEC_READONLY) |
| 555 | || ! bfd_set_section_alignment (abfd, s, 2)) |
| 556 | return FALSE; |
| 557 | return TRUE; |
| 558 | } |
| 559 | |
| 560 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 561 | regular object. The current definition is in some section of the |
| 562 | dynamic object, but we're not including those sections. We have to |
| 563 | change the definition to something the rest of the link can |
| 564 | understand. */ |
| 565 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 566 | * certainly does the wrong thing. Its here simply because it does |
| 567 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 568 | */ |
| 569 | |
| 570 | static bfd_boolean |
| 571 | i370_elf_adjust_dynamic_symbol (info, h) |
| 572 | struct bfd_link_info *info; |
| 573 | struct elf_link_hash_entry *h; |
| 574 | { |
| 575 | bfd *dynobj = elf_hash_table (info)->dynobj; |
| 576 | asection *s; |
| 577 | unsigned int power_of_two; |
| 578 | |
| 579 | #ifdef DEBUG |
| 580 | fprintf (stderr, "i370_elf_adjust_dynamic_symbol called for %s\n", |
| 581 | h->root.root.string); |
| 582 | #endif |
| 583 | |
| 584 | /* Make sure we know what is going on here. */ |
| 585 | BFD_ASSERT (dynobj != NULL |
| 586 | && ((h->elf_link_hash_flags & ELF_LINK_HASH_NEEDS_PLT) |
| 587 | || h->weakdef != NULL |
| 588 | || ((h->elf_link_hash_flags |
| 589 | & ELF_LINK_HASH_DEF_DYNAMIC) != 0 |
| 590 | && (h->elf_link_hash_flags |
| 591 | & ELF_LINK_HASH_REF_REGULAR) != 0 |
| 592 | && (h->elf_link_hash_flags |
| 593 | & ELF_LINK_HASH_DEF_REGULAR) == 0))); |
| 594 | |
| 595 | s = bfd_get_section_by_name (dynobj, ".rela.text"); |
| 596 | BFD_ASSERT (s != NULL); |
| 597 | s->_raw_size += sizeof (Elf32_External_Rela); |
| 598 | |
| 599 | /* If this is a weak symbol, and there is a real definition, the |
| 600 | processor independent code will have arranged for us to see the |
| 601 | real definition first, and we can just use the same value. */ |
| 602 | if (h->weakdef != NULL) |
| 603 | { |
| 604 | BFD_ASSERT (h->weakdef->root.type == bfd_link_hash_defined |
| 605 | || h->weakdef->root.type == bfd_link_hash_defweak); |
| 606 | h->root.u.def.section = h->weakdef->root.u.def.section; |
| 607 | h->root.u.def.value = h->weakdef->root.u.def.value; |
| 608 | return TRUE; |
| 609 | } |
| 610 | |
| 611 | /* This is a reference to a symbol defined by a dynamic object which |
| 612 | is not a function. */ |
| 613 | |
| 614 | /* If we are creating a shared library, we must presume that the |
| 615 | only references to the symbol are via the global offset table. |
| 616 | For such cases we need not do anything here; the relocations will |
| 617 | be handled correctly by relocate_section. */ |
| 618 | if (info->shared) |
| 619 | return TRUE; |
| 620 | |
| 621 | /* We must allocate the symbol in our .dynbss section, which will |
| 622 | become part of the .bss section of the executable. There will be |
| 623 | an entry for this symbol in the .dynsym section. The dynamic |
| 624 | object will contain position independent code, so all references |
| 625 | from the dynamic object to this symbol will go through the global |
| 626 | offset table. The dynamic linker will use the .dynsym entry to |
| 627 | determine the address it must put in the global offset table, so |
| 628 | both the dynamic object and the regular object will refer to the |
| 629 | same memory location for the variable. |
| 630 | |
| 631 | Of course, if the symbol is sufficiently small, we must instead |
| 632 | allocate it in .sbss. FIXME: It would be better to do this if and |
| 633 | only if there were actually SDAREL relocs for that symbol. */ |
| 634 | |
| 635 | if (h->size <= elf_gp_size (dynobj)) |
| 636 | s = bfd_get_section_by_name (dynobj, ".dynsbss"); |
| 637 | else |
| 638 | s = bfd_get_section_by_name (dynobj, ".dynbss"); |
| 639 | BFD_ASSERT (s != NULL); |
| 640 | |
| 641 | /* We must generate a R_I370_COPY reloc to tell the dynamic linker to |
| 642 | copy the initial value out of the dynamic object and into the |
| 643 | runtime process image. We need to remember the offset into the |
| 644 | .rela.bss section we are going to use. */ |
| 645 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 646 | { |
| 647 | asection *srel; |
| 648 | |
| 649 | if (h->size <= elf_gp_size (dynobj)) |
| 650 | srel = bfd_get_section_by_name (dynobj, ".rela.sbss"); |
| 651 | else |
| 652 | srel = bfd_get_section_by_name (dynobj, ".rela.bss"); |
| 653 | BFD_ASSERT (srel != NULL); |
| 654 | srel->_raw_size += sizeof (Elf32_External_Rela); |
| 655 | h->elf_link_hash_flags |= ELF_LINK_HASH_NEEDS_COPY; |
| 656 | } |
| 657 | |
| 658 | /* We need to figure out the alignment required for this symbol. I |
| 659 | have no idea how ELF linkers handle this. */ |
| 660 | power_of_two = bfd_log2 (h->size); |
| 661 | if (power_of_two > 4) |
| 662 | power_of_two = 4; |
| 663 | |
| 664 | /* Apply the required alignment. */ |
| 665 | s->_raw_size = BFD_ALIGN (s->_raw_size, |
| 666 | (bfd_size_type) (1 << power_of_two)); |
| 667 | if (power_of_two > bfd_get_section_alignment (dynobj, s)) |
| 668 | { |
| 669 | if (! bfd_set_section_alignment (dynobj, s, power_of_two)) |
| 670 | return FALSE; |
| 671 | } |
| 672 | |
| 673 | /* Define the symbol as being at this point in the section. */ |
| 674 | h->root.u.def.section = s; |
| 675 | h->root.u.def.value = s->_raw_size; |
| 676 | |
| 677 | /* Increment the section size to make room for the symbol. */ |
| 678 | s->_raw_size += h->size; |
| 679 | |
| 680 | return TRUE; |
| 681 | } |
| 682 | \f |
| 683 | /* Increment the index of a dynamic symbol by a given amount. Called |
| 684 | via elf_link_hash_traverse. */ |
| 685 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 686 | * certainly does the wrong thing. Its here simply because it does |
| 687 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 688 | */ |
| 689 | |
| 690 | static bfd_boolean |
| 691 | i370_elf_adjust_dynindx (h, cparg) |
| 692 | struct elf_link_hash_entry *h; |
| 693 | PTR cparg; |
| 694 | { |
| 695 | int *cp = (int *) cparg; |
| 696 | |
| 697 | #ifdef DEBUG |
| 698 | fprintf (stderr, |
| 699 | "i370_elf_adjust_dynindx called, h->dynindx = %d, *cp = %d\n", |
| 700 | h->dynindx, *cp); |
| 701 | #endif |
| 702 | |
| 703 | if (h->root.type == bfd_link_hash_warning) |
| 704 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 705 | |
| 706 | if (h->dynindx != -1) |
| 707 | h->dynindx += *cp; |
| 708 | |
| 709 | return TRUE; |
| 710 | } |
| 711 | \f |
| 712 | /* Set the sizes of the dynamic sections. */ |
| 713 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 714 | * certainly does the wrong thing. Its here simply because it does |
| 715 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 716 | */ |
| 717 | |
| 718 | static bfd_boolean |
| 719 | i370_elf_size_dynamic_sections (output_bfd, info) |
| 720 | bfd *output_bfd; |
| 721 | struct bfd_link_info *info; |
| 722 | { |
| 723 | bfd *dynobj; |
| 724 | asection *s; |
| 725 | bfd_boolean plt; |
| 726 | bfd_boolean relocs; |
| 727 | bfd_boolean reltext; |
| 728 | |
| 729 | #ifdef DEBUG |
| 730 | fprintf (stderr, "i370_elf_size_dynamic_sections called\n"); |
| 731 | #endif |
| 732 | |
| 733 | dynobj = elf_hash_table (info)->dynobj; |
| 734 | BFD_ASSERT (dynobj != NULL); |
| 735 | |
| 736 | if (elf_hash_table (info)->dynamic_sections_created) |
| 737 | { |
| 738 | /* Set the contents of the .interp section to the interpreter. */ |
| 739 | if (! info->shared) |
| 740 | { |
| 741 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 742 | BFD_ASSERT (s != NULL); |
| 743 | s->_raw_size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 744 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 745 | } |
| 746 | } |
| 747 | else |
| 748 | { |
| 749 | /* We may have created entries in the .rela.got, .rela.sdata, and |
| 750 | .rela.sdata2 sections. However, if we are not creating the |
| 751 | dynamic sections, we will not actually use these entries. Reset |
| 752 | the size of .rela.got, et al, which will cause it to get |
| 753 | stripped from the output file below. */ |
| 754 | static char *rela_sections[] = { ".rela.got", ".rela.sdata", |
| 755 | ".rela.sdata2", ".rela.sbss", |
| 756 | (char *)0 }; |
| 757 | char **p; |
| 758 | |
| 759 | for (p = rela_sections; *p != (char *)0; p++) |
| 760 | { |
| 761 | s = bfd_get_section_by_name (dynobj, *p); |
| 762 | if (s != NULL) |
| 763 | s->_raw_size = 0; |
| 764 | } |
| 765 | } |
| 766 | |
| 767 | /* The check_relocs and adjust_dynamic_symbol entry points have |
| 768 | determined the sizes of the various dynamic sections. Allocate |
| 769 | memory for them. */ |
| 770 | plt = FALSE; |
| 771 | relocs = FALSE; |
| 772 | reltext = FALSE; |
| 773 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 774 | { |
| 775 | const char *name; |
| 776 | bfd_boolean strip; |
| 777 | |
| 778 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 779 | continue; |
| 780 | |
| 781 | /* It's OK to base decisions on the section name, because none |
| 782 | of the dynobj section names depend upon the input files. */ |
| 783 | name = bfd_get_section_name (dynobj, s); |
| 784 | strip = FALSE; |
| 785 | |
| 786 | if (strcmp (name, ".plt") == 0) |
| 787 | { |
| 788 | if (s->_raw_size == 0) |
| 789 | { |
| 790 | /* Strip this section if we don't need it; see the |
| 791 | comment below. */ |
| 792 | strip = TRUE; |
| 793 | } |
| 794 | else |
| 795 | { |
| 796 | /* Remember whether there is a PLT. */ |
| 797 | plt = TRUE; |
| 798 | } |
| 799 | } |
| 800 | else if (strncmp (name, ".rela", 5) == 0) |
| 801 | { |
| 802 | if (s->_raw_size == 0) |
| 803 | { |
| 804 | /* If we don't need this section, strip it from the |
| 805 | output file. This is mostly to handle .rela.bss and |
| 806 | .rela.plt. We must create both sections in |
| 807 | create_dynamic_sections, because they must be created |
| 808 | before the linker maps input sections to output |
| 809 | sections. The linker does that before |
| 810 | adjust_dynamic_symbol is called, and it is that |
| 811 | function which decides whether anything needs to go |
| 812 | into these sections. */ |
| 813 | strip = TRUE; |
| 814 | } |
| 815 | else |
| 816 | { |
| 817 | asection *target; |
| 818 | const char *outname; |
| 819 | |
| 820 | /* Remember whether there are any relocation sections. */ |
| 821 | relocs = TRUE; |
| 822 | |
| 823 | /* If this relocation section applies to a read only |
| 824 | section, then we probably need a DT_TEXTREL entry. */ |
| 825 | outname = bfd_get_section_name (output_bfd, |
| 826 | s->output_section); |
| 827 | target = bfd_get_section_by_name (output_bfd, outname + 5); |
| 828 | if (target != NULL |
| 829 | && (target->flags & SEC_READONLY) != 0 |
| 830 | && (target->flags & SEC_ALLOC) != 0) |
| 831 | reltext = TRUE; |
| 832 | |
| 833 | /* We use the reloc_count field as a counter if we need |
| 834 | to copy relocs into the output file. */ |
| 835 | s->reloc_count = 0; |
| 836 | } |
| 837 | } |
| 838 | else if (strcmp (name, ".got") != 0 |
| 839 | && strcmp (name, ".sdata") != 0 |
| 840 | && strcmp (name, ".sdata2") != 0) |
| 841 | { |
| 842 | /* It's not one of our sections, so don't allocate space. */ |
| 843 | continue; |
| 844 | } |
| 845 | |
| 846 | if (strip) |
| 847 | { |
| 848 | asection **spp; |
| 849 | |
| 850 | for (spp = &s->output_section->owner->sections; |
| 851 | *spp != NULL; |
| 852 | spp = &(*spp)->next) |
| 853 | { |
| 854 | if (*spp == s->output_section) |
| 855 | { |
| 856 | bfd_section_list_remove (s->output_section->owner, spp); |
| 857 | --s->output_section->owner->section_count; |
| 858 | break; |
| 859 | } |
| 860 | } |
| 861 | continue; |
| 862 | } |
| 863 | /* Allocate memory for the section contents. */ |
| 864 | s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->_raw_size); |
| 865 | if (s->contents == NULL && s->_raw_size != 0) |
| 866 | return FALSE; |
| 867 | } |
| 868 | |
| 869 | if (elf_hash_table (info)->dynamic_sections_created) |
| 870 | { |
| 871 | /* Add some entries to the .dynamic section. We fill in the |
| 872 | values later, in i370_elf_finish_dynamic_sections, but we |
| 873 | must add the entries now so that we get the correct size for |
| 874 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 875 | dynamic linker and used by the debugger. */ |
| 876 | #define add_dynamic_entry(TAG, VAL) \ |
| 877 | bfd_elf32_add_dynamic_entry (info, (bfd_vma) (TAG), (bfd_vma) (VAL)) |
| 878 | |
| 879 | if (!info->shared) |
| 880 | { |
| 881 | if (!add_dynamic_entry (DT_DEBUG, 0)) |
| 882 | return FALSE; |
| 883 | } |
| 884 | |
| 885 | if (plt) |
| 886 | { |
| 887 | if (!add_dynamic_entry (DT_PLTGOT, 0) |
| 888 | || !add_dynamic_entry (DT_PLTRELSZ, 0) |
| 889 | || !add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 890 | || !add_dynamic_entry (DT_JMPREL, 0)) |
| 891 | return FALSE; |
| 892 | } |
| 893 | |
| 894 | if (relocs) |
| 895 | { |
| 896 | if (!add_dynamic_entry (DT_RELA, 0) |
| 897 | || !add_dynamic_entry (DT_RELASZ, 0) |
| 898 | || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela))) |
| 899 | return FALSE; |
| 900 | } |
| 901 | |
| 902 | if (reltext) |
| 903 | { |
| 904 | if (!add_dynamic_entry (DT_TEXTREL, 0)) |
| 905 | return FALSE; |
| 906 | info->flags |= DF_TEXTREL; |
| 907 | } |
| 908 | } |
| 909 | #undef add_dynamic_entry |
| 910 | |
| 911 | /* If we are generating a shared library, we generate a section |
| 912 | symbol for each output section. These are local symbols, which |
| 913 | means that they must come first in the dynamic symbol table. |
| 914 | That means we must increment the dynamic symbol index of every |
| 915 | other dynamic symbol. |
| 916 | |
| 917 | FIXME: We assume that there will never be relocations to |
| 918 | locations in linker-created sections that do not have |
| 919 | externally-visible names. Instead, we should work out precisely |
| 920 | which sections relocations are targetted at. */ |
| 921 | if (info->shared) |
| 922 | { |
| 923 | int c; |
| 924 | |
| 925 | for (c = 0, s = output_bfd->sections; s != NULL; s = s->next) |
| 926 | { |
| 927 | if ((s->flags & SEC_LINKER_CREATED) != 0 |
| 928 | || (s->flags & SEC_ALLOC) == 0) |
| 929 | { |
| 930 | elf_section_data (s)->dynindx = -1; |
| 931 | continue; |
| 932 | } |
| 933 | |
| 934 | /* These symbols will have no names, so we don't need to |
| 935 | fiddle with dynstr_index. */ |
| 936 | |
| 937 | elf_section_data (s)->dynindx = c + 1; |
| 938 | |
| 939 | c++; |
| 940 | } |
| 941 | |
| 942 | elf_link_hash_traverse (elf_hash_table (info), |
| 943 | i370_elf_adjust_dynindx, |
| 944 | (PTR) &c); |
| 945 | elf_hash_table (info)->dynsymcount += c; |
| 946 | } |
| 947 | |
| 948 | return TRUE; |
| 949 | } |
| 950 | \f |
| 951 | /* Look through the relocs for a section during the first phase, and |
| 952 | allocate space in the global offset table or procedure linkage |
| 953 | table. */ |
| 954 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 955 | * certainly does the wrong thing. Its here simply because it does |
| 956 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 957 | */ |
| 958 | |
| 959 | static bfd_boolean |
| 960 | i370_elf_check_relocs (abfd, info, sec, relocs) |
| 961 | bfd *abfd; |
| 962 | struct bfd_link_info *info; |
| 963 | asection *sec; |
| 964 | const Elf_Internal_Rela *relocs; |
| 965 | { |
| 966 | bfd *dynobj; |
| 967 | Elf_Internal_Shdr *symtab_hdr; |
| 968 | struct elf_link_hash_entry **sym_hashes; |
| 969 | const Elf_Internal_Rela *rel; |
| 970 | const Elf_Internal_Rela *rel_end; |
| 971 | bfd_vma *local_got_offsets; |
| 972 | asection *sreloc; |
| 973 | |
| 974 | if (info->relocateable) |
| 975 | return TRUE; |
| 976 | |
| 977 | #ifdef DEBUG |
| 978 | fprintf (stderr, "i370_elf_check_relocs called for section %s in %s\n", |
| 979 | bfd_get_section_name (abfd, sec), |
| 980 | bfd_archive_filename (abfd)); |
| 981 | #endif |
| 982 | |
| 983 | dynobj = elf_hash_table (info)->dynobj; |
| 984 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 985 | sym_hashes = elf_sym_hashes (abfd); |
| 986 | local_got_offsets = elf_local_got_offsets (abfd); |
| 987 | |
| 988 | sreloc = NULL; |
| 989 | |
| 990 | rel_end = relocs + sec->reloc_count; |
| 991 | for (rel = relocs; rel < rel_end; rel++) |
| 992 | { |
| 993 | unsigned long r_symndx; |
| 994 | struct elf_link_hash_entry *h; |
| 995 | |
| 996 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 997 | if (r_symndx < symtab_hdr->sh_info) |
| 998 | h = NULL; |
| 999 | else |
| 1000 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1001 | |
| 1002 | if (info->shared) |
| 1003 | { |
| 1004 | #ifdef DEBUG |
| 1005 | fprintf (stderr, |
| 1006 | "i370_elf_check_relocs needs to create relocation for %s\n", |
| 1007 | (h && h->root.root.string) |
| 1008 | ? h->root.root.string : "<unknown>"); |
| 1009 | #endif |
| 1010 | if (sreloc == NULL) |
| 1011 | { |
| 1012 | const char *name; |
| 1013 | |
| 1014 | name = (bfd_elf_string_from_elf_section |
| 1015 | (abfd, |
| 1016 | elf_elfheader (abfd)->e_shstrndx, |
| 1017 | elf_section_data (sec)->rel_hdr.sh_name)); |
| 1018 | if (name == NULL) |
| 1019 | return FALSE; |
| 1020 | |
| 1021 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 1022 | && strcmp (bfd_get_section_name (abfd, sec), name + 5) == 0); |
| 1023 | |
| 1024 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 1025 | if (sreloc == NULL) |
| 1026 | { |
| 1027 | flagword flags; |
| 1028 | |
| 1029 | sreloc = bfd_make_section (dynobj, name); |
| 1030 | flags = (SEC_HAS_CONTENTS | SEC_READONLY |
| 1031 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 1032 | if ((sec->flags & SEC_ALLOC) != 0) |
| 1033 | flags |= SEC_ALLOC | SEC_LOAD; |
| 1034 | if (sreloc == NULL |
| 1035 | || ! bfd_set_section_flags (dynobj, sreloc, flags) |
| 1036 | || ! bfd_set_section_alignment (dynobj, sreloc, 2)) |
| 1037 | return FALSE; |
| 1038 | } |
| 1039 | } |
| 1040 | |
| 1041 | sreloc->_raw_size += sizeof (Elf32_External_Rela); |
| 1042 | |
| 1043 | /* FIXME: We should here do what the m68k and i386 |
| 1044 | backends do: if the reloc is pc-relative, record it |
| 1045 | in case it turns out that the reloc is unnecessary |
| 1046 | because the symbol is forced local by versioning or |
| 1047 | we are linking with -Bdynamic. Fortunately this |
| 1048 | case is not frequent. */ |
| 1049 | } |
| 1050 | } |
| 1051 | |
| 1052 | return TRUE; |
| 1053 | } |
| 1054 | \f |
| 1055 | /* Finish up the dynamic sections. */ |
| 1056 | /* XXX hack alert bogus This routine is mostly all junk and almost |
| 1057 | * certainly does the wrong thing. Its here simply because it does |
| 1058 | * just enough to allow glibc-2.1 ld.so to compile & link. |
| 1059 | */ |
| 1060 | |
| 1061 | static bfd_boolean |
| 1062 | i370_elf_finish_dynamic_sections (output_bfd, info) |
| 1063 | bfd *output_bfd; |
| 1064 | struct bfd_link_info *info; |
| 1065 | { |
| 1066 | asection *sdyn; |
| 1067 | bfd *dynobj = elf_hash_table (info)->dynobj; |
| 1068 | asection *sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1069 | |
| 1070 | #ifdef DEBUG |
| 1071 | fprintf (stderr, "i370_elf_finish_dynamic_sections called\n"); |
| 1072 | #endif |
| 1073 | |
| 1074 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 1075 | |
| 1076 | if (elf_hash_table (info)->dynamic_sections_created) |
| 1077 | { |
| 1078 | asection *splt; |
| 1079 | Elf32_External_Dyn *dyncon, *dynconend; |
| 1080 | |
| 1081 | splt = bfd_get_section_by_name (dynobj, ".plt"); |
| 1082 | BFD_ASSERT (splt != NULL && sdyn != NULL); |
| 1083 | |
| 1084 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 1085 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->_raw_size); |
| 1086 | for (; dyncon < dynconend; dyncon++) |
| 1087 | { |
| 1088 | Elf_Internal_Dyn dyn; |
| 1089 | const char *name; |
| 1090 | bfd_boolean size; |
| 1091 | |
| 1092 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 1093 | |
| 1094 | switch (dyn.d_tag) |
| 1095 | { |
| 1096 | case DT_PLTGOT: name = ".plt"; size = FALSE; break; |
| 1097 | case DT_PLTRELSZ: name = ".rela.plt"; size = TRUE; break; |
| 1098 | case DT_JMPREL: name = ".rela.plt"; size = FALSE; break; |
| 1099 | default: name = NULL; size = FALSE; break; |
| 1100 | } |
| 1101 | |
| 1102 | if (name != NULL) |
| 1103 | { |
| 1104 | asection *s; |
| 1105 | |
| 1106 | s = bfd_get_section_by_name (output_bfd, name); |
| 1107 | if (s == NULL) |
| 1108 | dyn.d_un.d_val = 0; |
| 1109 | else |
| 1110 | { |
| 1111 | if (! size) |
| 1112 | dyn.d_un.d_ptr = s->vma; |
| 1113 | else |
| 1114 | { |
| 1115 | if (s->_cooked_size != 0) |
| 1116 | dyn.d_un.d_val = s->_cooked_size; |
| 1117 | else |
| 1118 | dyn.d_un.d_val = s->_raw_size; |
| 1119 | } |
| 1120 | } |
| 1121 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 1122 | } |
| 1123 | } |
| 1124 | } |
| 1125 | |
| 1126 | /* Add a blrl instruction at _GLOBAL_OFFSET_TABLE_-4 so that a function can |
| 1127 | easily find the address of the _GLOBAL_OFFSET_TABLE_. */ |
| 1128 | /* XXX this is clearly very wrong for the 370 arch */ |
| 1129 | if (sgot) |
| 1130 | { |
| 1131 | unsigned char *contents = sgot->contents; |
| 1132 | bfd_put_32 (output_bfd, (bfd_vma) 0x4e800021 /* blrl */, contents); |
| 1133 | |
| 1134 | if (sdyn == NULL) |
| 1135 | bfd_put_32 (output_bfd, (bfd_vma) 0, contents+4); |
| 1136 | else |
| 1137 | bfd_put_32 (output_bfd, |
| 1138 | sdyn->output_section->vma + sdyn->output_offset, |
| 1139 | contents+4); |
| 1140 | |
| 1141 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| 1142 | } |
| 1143 | |
| 1144 | if (info->shared) |
| 1145 | { |
| 1146 | asection *sdynsym; |
| 1147 | asection *s; |
| 1148 | Elf_Internal_Sym sym; |
| 1149 | int maxdindx = 0; |
| 1150 | |
| 1151 | /* Set up the section symbols for the output sections. */ |
| 1152 | |
| 1153 | sdynsym = bfd_get_section_by_name (dynobj, ".dynsym"); |
| 1154 | BFD_ASSERT (sdynsym != NULL); |
| 1155 | |
| 1156 | sym.st_size = 0; |
| 1157 | sym.st_name = 0; |
| 1158 | sym.st_info = ELF_ST_INFO (STB_LOCAL, STT_SECTION); |
| 1159 | sym.st_other = 0; |
| 1160 | |
| 1161 | for (s = output_bfd->sections; s != NULL; s = s->next) |
| 1162 | { |
| 1163 | int indx, dindx; |
| 1164 | Elf32_External_Sym *esym; |
| 1165 | |
| 1166 | sym.st_value = s->vma; |
| 1167 | |
| 1168 | indx = elf_section_data (s)->this_idx; |
| 1169 | dindx = elf_section_data (s)->dynindx; |
| 1170 | if (dindx != -1) |
| 1171 | { |
| 1172 | BFD_ASSERT(indx > 0); |
| 1173 | BFD_ASSERT(dindx > 0); |
| 1174 | |
| 1175 | if (dindx > maxdindx) |
| 1176 | maxdindx = dindx; |
| 1177 | |
| 1178 | sym.st_shndx = indx; |
| 1179 | |
| 1180 | esym = (Elf32_External_Sym *) sdynsym->contents + dindx; |
| 1181 | bfd_elf32_swap_symbol_out (output_bfd, &sym, (PTR) esym, (PTR) 0); |
| 1182 | } |
| 1183 | } |
| 1184 | |
| 1185 | /* Set the sh_info field of the output .dynsym section to the |
| 1186 | index of the first global symbol. */ |
| 1187 | elf_section_data (sdynsym->output_section)->this_hdr.sh_info = |
| 1188 | maxdindx + 1; |
| 1189 | } |
| 1190 | |
| 1191 | return TRUE; |
| 1192 | } |
| 1193 | \f |
| 1194 | /* The RELOCATE_SECTION function is called by the ELF backend linker |
| 1195 | to handle the relocations for a section. |
| 1196 | |
| 1197 | The relocs are always passed as Rela structures; if the section |
| 1198 | actually uses Rel structures, the r_addend field will always be |
| 1199 | zero. |
| 1200 | |
| 1201 | This function is responsible for adjust the section contents as |
| 1202 | necessary, and (if using Rela relocs and generating a |
| 1203 | relocateable output file) adjusting the reloc addend as |
| 1204 | necessary. |
| 1205 | |
| 1206 | This function does not have to worry about setting the reloc |
| 1207 | address or the reloc symbol index. |
| 1208 | |
| 1209 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 1210 | |
| 1211 | LOCAL_SECTIONS is an array giving the section in the input file |
| 1212 | corresponding to the st_shndx field of each local symbol. |
| 1213 | |
| 1214 | The global hash table entry for the global symbols can be found |
| 1215 | via elf_sym_hashes (input_bfd). |
| 1216 | |
| 1217 | When generating relocateable output, this function must handle |
| 1218 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 1219 | going to be the section symbol corresponding to the output |
| 1220 | section, which means that the addend must be adjusted |
| 1221 | accordingly. */ |
| 1222 | |
| 1223 | static bfd_boolean |
| 1224 | i370_elf_relocate_section (output_bfd, info, input_bfd, input_section, |
| 1225 | contents, relocs, local_syms, local_sections) |
| 1226 | bfd *output_bfd; |
| 1227 | struct bfd_link_info *info; |
| 1228 | bfd *input_bfd; |
| 1229 | asection *input_section; |
| 1230 | bfd_byte *contents; |
| 1231 | Elf_Internal_Rela *relocs; |
| 1232 | Elf_Internal_Sym *local_syms; |
| 1233 | asection **local_sections; |
| 1234 | { |
| 1235 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 1236 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
| 1237 | bfd *dynobj = elf_hash_table (info)->dynobj; |
| 1238 | Elf_Internal_Rela *rel = relocs; |
| 1239 | Elf_Internal_Rela *relend = relocs + input_section->reloc_count; |
| 1240 | asection *sreloc = NULL; |
| 1241 | bfd_vma *local_got_offsets; |
| 1242 | bfd_boolean ret = TRUE; |
| 1243 | |
| 1244 | if (info->relocateable) |
| 1245 | return TRUE; |
| 1246 | |
| 1247 | #ifdef DEBUG |
| 1248 | fprintf (stderr, "i370_elf_relocate_section called for %s section %s, %ld relocations%s\n", |
| 1249 | bfd_archive_filename (input_bfd), |
| 1250 | bfd_section_name(input_bfd, input_section), |
| 1251 | (long) input_section->reloc_count, |
| 1252 | (info->relocateable) ? " (relocatable)" : ""); |
| 1253 | #endif |
| 1254 | |
| 1255 | if (!i370_elf_howto_table[ R_I370_ADDR31 ]) /* Initialize howto table if needed */ |
| 1256 | i370_elf_howto_init (); |
| 1257 | |
| 1258 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 1259 | |
| 1260 | for (; rel < relend; rel++) |
| 1261 | { |
| 1262 | enum i370_reloc_type r_type = (enum i370_reloc_type)ELF32_R_TYPE (rel->r_info); |
| 1263 | bfd_vma offset = rel->r_offset; |
| 1264 | bfd_vma addend = rel->r_addend; |
| 1265 | bfd_reloc_status_type r = bfd_reloc_other; |
| 1266 | Elf_Internal_Sym *sym = (Elf_Internal_Sym *)0; |
| 1267 | asection *sec = (asection *)0; |
| 1268 | struct elf_link_hash_entry *h = (struct elf_link_hash_entry *)0; |
| 1269 | const char *sym_name = (const char *)0; |
| 1270 | reloc_howto_type *howto; |
| 1271 | unsigned long r_symndx; |
| 1272 | bfd_vma relocation; |
| 1273 | |
| 1274 | /* Unknown relocation handling */ |
| 1275 | if ((unsigned)r_type >= (unsigned)R_I370_max |
| 1276 | || !i370_elf_howto_table[(int)r_type]) |
| 1277 | { |
| 1278 | (*_bfd_error_handler) ("%s: unknown relocation type %d", |
| 1279 | bfd_archive_filename (input_bfd), |
| 1280 | (int) r_type); |
| 1281 | |
| 1282 | bfd_set_error (bfd_error_bad_value); |
| 1283 | ret = FALSE; |
| 1284 | continue; |
| 1285 | } |
| 1286 | |
| 1287 | howto = i370_elf_howto_table[(int)r_type]; |
| 1288 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 1289 | |
| 1290 | if (r_symndx < symtab_hdr->sh_info) |
| 1291 | { |
| 1292 | sym = local_syms + r_symndx; |
| 1293 | sec = local_sections[r_symndx]; |
| 1294 | sym_name = "<local symbol>"; |
| 1295 | |
| 1296 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, sec, rel); |
| 1297 | addend = rel->r_addend; |
| 1298 | } |
| 1299 | else |
| 1300 | { |
| 1301 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 1302 | while (h->root.type == bfd_link_hash_indirect |
| 1303 | || h->root.type == bfd_link_hash_warning) |
| 1304 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1305 | sym_name = h->root.root.string; |
| 1306 | if (h->root.type == bfd_link_hash_defined |
| 1307 | || h->root.type == bfd_link_hash_defweak) |
| 1308 | { |
| 1309 | sec = h->root.u.def.section; |
| 1310 | if (info->shared |
| 1311 | && ((! info->symbolic && h->dynindx != -1) |
| 1312 | || (h->elf_link_hash_flags |
| 1313 | & ELF_LINK_HASH_DEF_REGULAR) == 0) |
| 1314 | && (input_section->flags & SEC_ALLOC) != 0 |
| 1315 | && (r_type == R_I370_ADDR31 |
| 1316 | || r_type == R_I370_COPY |
| 1317 | || r_type == R_I370_ADDR16 |
| 1318 | || r_type == R_I370_RELATIVE)) |
| 1319 | { |
| 1320 | /* In these cases, we don't need the relocation |
| 1321 | value. We check specially because in some |
| 1322 | obscure cases sec->output_section will be NULL. */ |
| 1323 | relocation = 0; |
| 1324 | } |
| 1325 | else |
| 1326 | relocation = (h->root.u.def.value |
| 1327 | + sec->output_section->vma |
| 1328 | + sec->output_offset); |
| 1329 | } |
| 1330 | else if (h->root.type == bfd_link_hash_undefweak) |
| 1331 | relocation = 0; |
| 1332 | else if (info->shared |
| 1333 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 1334 | relocation = 0; |
| 1335 | else |
| 1336 | { |
| 1337 | (*info->callbacks->undefined_symbol) (info, |
| 1338 | h->root.root.string, |
| 1339 | input_bfd, |
| 1340 | input_section, |
| 1341 | rel->r_offset, |
| 1342 | TRUE); |
| 1343 | ret = FALSE; |
| 1344 | continue; |
| 1345 | } |
| 1346 | } |
| 1347 | |
| 1348 | switch ((int) r_type) |
| 1349 | { |
| 1350 | default: |
| 1351 | (*_bfd_error_handler) |
| 1352 | ("%s: unknown relocation type %d for symbol %s", |
| 1353 | bfd_archive_filename (input_bfd), |
| 1354 | (int) r_type, sym_name); |
| 1355 | |
| 1356 | bfd_set_error (bfd_error_bad_value); |
| 1357 | ret = FALSE; |
| 1358 | continue; |
| 1359 | |
| 1360 | case (int)R_I370_NONE: |
| 1361 | continue; |
| 1362 | |
| 1363 | /* Relocations that may need to be propagated if this is a shared |
| 1364 | object. */ |
| 1365 | case (int)R_I370_REL31: |
| 1366 | /* If these relocations are not to a named symbol, they can be |
| 1367 | handled right here, no need to bother the dynamic linker. */ |
| 1368 | if (h == NULL |
| 1369 | || strcmp (h->root.root.string, "_GLOBAL_OFFSET_TABLE_") == 0) |
| 1370 | break; |
| 1371 | /* fall through */ |
| 1372 | |
| 1373 | /* Relocations that always need to be propagated if this is a shared |
| 1374 | object. */ |
| 1375 | case (int)R_I370_ADDR31: |
| 1376 | case (int)R_I370_ADDR16: |
| 1377 | if (info->shared |
| 1378 | && r_symndx != 0) |
| 1379 | { |
| 1380 | Elf_Internal_Rela outrel; |
| 1381 | bfd_byte *loc; |
| 1382 | int skip; |
| 1383 | |
| 1384 | #ifdef DEBUG |
| 1385 | fprintf (stderr, |
| 1386 | "i370_elf_relocate_section needs to create relocation for %s\n", |
| 1387 | (h && h->root.root.string) ? h->root.root.string : "<unknown>"); |
| 1388 | #endif |
| 1389 | |
| 1390 | /* When generating a shared object, these relocations |
| 1391 | are copied into the output file to be resolved at run |
| 1392 | time. */ |
| 1393 | |
| 1394 | if (sreloc == NULL) |
| 1395 | { |
| 1396 | const char *name; |
| 1397 | |
| 1398 | name = (bfd_elf_string_from_elf_section |
| 1399 | (input_bfd, |
| 1400 | elf_elfheader (input_bfd)->e_shstrndx, |
| 1401 | elf_section_data (input_section)->rel_hdr.sh_name)); |
| 1402 | if (name == NULL) |
| 1403 | return FALSE; |
| 1404 | |
| 1405 | BFD_ASSERT (strncmp (name, ".rela", 5) == 0 |
| 1406 | && strcmp (bfd_get_section_name (input_bfd, |
| 1407 | input_section), |
| 1408 | name + 5) == 0); |
| 1409 | |
| 1410 | sreloc = bfd_get_section_by_name (dynobj, name); |
| 1411 | BFD_ASSERT (sreloc != NULL); |
| 1412 | } |
| 1413 | |
| 1414 | skip = 0; |
| 1415 | |
| 1416 | outrel.r_offset = |
| 1417 | _bfd_elf_section_offset (output_bfd, info, input_section, |
| 1418 | rel->r_offset); |
| 1419 | if (outrel.r_offset == (bfd_vma) -1 |
| 1420 | || outrel.r_offset == (bfd_vma) -2) |
| 1421 | skip = (int) outrel.r_offset; |
| 1422 | outrel.r_offset += (input_section->output_section->vma |
| 1423 | + input_section->output_offset); |
| 1424 | |
| 1425 | if (skip) |
| 1426 | memset (&outrel, 0, sizeof outrel); |
| 1427 | /* h->dynindx may be -1 if this symbol was marked to |
| 1428 | become local. */ |
| 1429 | else if (h != NULL |
| 1430 | && ((! info->symbolic && h->dynindx != -1) |
| 1431 | || (h->elf_link_hash_flags |
| 1432 | & ELF_LINK_HASH_DEF_REGULAR) == 0)) |
| 1433 | { |
| 1434 | BFD_ASSERT (h->dynindx != -1); |
| 1435 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 1436 | outrel.r_addend = rel->r_addend; |
| 1437 | } |
| 1438 | else |
| 1439 | { |
| 1440 | if (r_type == R_I370_ADDR31) |
| 1441 | { |
| 1442 | outrel.r_info = ELF32_R_INFO (0, R_I370_RELATIVE); |
| 1443 | outrel.r_addend = relocation + rel->r_addend; |
| 1444 | } |
| 1445 | else |
| 1446 | { |
| 1447 | long indx; |
| 1448 | |
| 1449 | if (h == NULL) |
| 1450 | sec = local_sections[r_symndx]; |
| 1451 | else |
| 1452 | { |
| 1453 | BFD_ASSERT (h->root.type == bfd_link_hash_defined |
| 1454 | || (h->root.type |
| 1455 | == bfd_link_hash_defweak)); |
| 1456 | sec = h->root.u.def.section; |
| 1457 | } |
| 1458 | if (sec != NULL && bfd_is_abs_section (sec)) |
| 1459 | indx = 0; |
| 1460 | else if (sec == NULL || sec->owner == NULL) |
| 1461 | { |
| 1462 | bfd_set_error (bfd_error_bad_value); |
| 1463 | return FALSE; |
| 1464 | } |
| 1465 | else |
| 1466 | { |
| 1467 | asection *osec; |
| 1468 | |
| 1469 | osec = sec->output_section; |
| 1470 | indx = elf_section_data (osec)->dynindx; |
| 1471 | BFD_ASSERT(indx > 0); |
| 1472 | #ifdef DEBUG |
| 1473 | if (indx <= 0) |
| 1474 | { |
| 1475 | printf ("indx=%d section=%s flags=%08x name=%s\n", |
| 1476 | indx, osec->name, osec->flags, |
| 1477 | h->root.root.string); |
| 1478 | } |
| 1479 | #endif |
| 1480 | } |
| 1481 | |
| 1482 | outrel.r_info = ELF32_R_INFO (indx, r_type); |
| 1483 | outrel.r_addend = relocation + rel->r_addend; |
| 1484 | } |
| 1485 | } |
| 1486 | |
| 1487 | loc = sreloc->contents; |
| 1488 | loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela); |
| 1489 | bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc); |
| 1490 | |
| 1491 | /* This reloc will be computed at runtime, so there's no |
| 1492 | need to do anything now, unless this is a RELATIVE |
| 1493 | reloc in an unallocated section. */ |
| 1494 | if (skip == -1 |
| 1495 | || (input_section->flags & SEC_ALLOC) != 0 |
| 1496 | || ELF32_R_TYPE (outrel.r_info) != R_I370_RELATIVE) |
| 1497 | continue; |
| 1498 | } |
| 1499 | break; |
| 1500 | |
| 1501 | case (int)R_I370_COPY: |
| 1502 | case (int)R_I370_RELATIVE: |
| 1503 | (*_bfd_error_handler) |
| 1504 | ("%s: Relocation %s is not yet supported for symbol %s.", |
| 1505 | bfd_archive_filename (input_bfd), |
| 1506 | i370_elf_howto_table[(int) r_type]->name, |
| 1507 | sym_name); |
| 1508 | |
| 1509 | bfd_set_error (bfd_error_invalid_operation); |
| 1510 | ret = FALSE; |
| 1511 | continue; |
| 1512 | } |
| 1513 | |
| 1514 | #ifdef DEBUG |
| 1515 | fprintf (stderr, "\ttype = %s (%d), name = %s, symbol index = %ld, offset = %ld, addend = %ld\n", |
| 1516 | howto->name, |
| 1517 | (int)r_type, |
| 1518 | sym_name, |
| 1519 | r_symndx, |
| 1520 | (long)offset, |
| 1521 | (long)addend); |
| 1522 | #endif |
| 1523 | |
| 1524 | r = _bfd_final_link_relocate (howto, |
| 1525 | input_bfd, |
| 1526 | input_section, |
| 1527 | contents, |
| 1528 | offset, |
| 1529 | relocation, |
| 1530 | addend); |
| 1531 | |
| 1532 | if (r != bfd_reloc_ok) |
| 1533 | { |
| 1534 | ret = FALSE; |
| 1535 | switch (r) |
| 1536 | { |
| 1537 | default: |
| 1538 | break; |
| 1539 | |
| 1540 | case bfd_reloc_overflow: |
| 1541 | { |
| 1542 | const char *name; |
| 1543 | |
| 1544 | if (h != NULL) |
| 1545 | name = h->root.root.string; |
| 1546 | else |
| 1547 | { |
| 1548 | name = bfd_elf_string_from_elf_section (input_bfd, |
| 1549 | symtab_hdr->sh_link, |
| 1550 | sym->st_name); |
| 1551 | if (name == NULL) |
| 1552 | break; |
| 1553 | |
| 1554 | if (*name == '\0') |
| 1555 | name = bfd_section_name (input_bfd, sec); |
| 1556 | } |
| 1557 | |
| 1558 | (*info->callbacks->reloc_overflow) (info, |
| 1559 | name, |
| 1560 | howto->name, |
| 1561 | (bfd_vma) 0, |
| 1562 | input_bfd, |
| 1563 | input_section, |
| 1564 | offset); |
| 1565 | } |
| 1566 | break; |
| 1567 | |
| 1568 | } |
| 1569 | } |
| 1570 | } |
| 1571 | |
| 1572 | #ifdef DEBUG |
| 1573 | fprintf (stderr, "\n"); |
| 1574 | #endif |
| 1575 | |
| 1576 | return ret; |
| 1577 | } |
| 1578 | |
| 1579 | static void |
| 1580 | i370_elf_post_process_headers (abfd, link_info) |
| 1581 | bfd * abfd; |
| 1582 | struct bfd_link_info * link_info ATTRIBUTE_UNUSED; |
| 1583 | { |
| 1584 | Elf_Internal_Ehdr * i_ehdrp; /* Elf file header, internal form */ |
| 1585 | |
| 1586 | i_ehdrp = elf_elfheader (abfd); |
| 1587 | i_ehdrp->e_ident[EI_OSABI] = ELFOSABI_LINUX; |
| 1588 | } |
| 1589 | \f |
| 1590 | #define TARGET_BIG_SYM bfd_elf32_i370_vec |
| 1591 | #define TARGET_BIG_NAME "elf32-i370" |
| 1592 | #define ELF_ARCH bfd_arch_i370 |
| 1593 | #define ELF_MACHINE_CODE EM_S370 |
| 1594 | #ifdef EM_I370_OLD |
| 1595 | #define ELF_MACHINE_ALT1 EM_I370_OLD |
| 1596 | #endif |
| 1597 | #define ELF_MAXPAGESIZE 0x1000 |
| 1598 | #define elf_info_to_howto i370_elf_info_to_howto |
| 1599 | |
| 1600 | #define elf_backend_plt_not_loaded 1 |
| 1601 | #define elf_backend_got_symbol_offset 4 |
| 1602 | #define elf_backend_rela_normal 1 |
| 1603 | |
| 1604 | #define bfd_elf32_bfd_reloc_type_lookup i370_elf_reloc_type_lookup |
| 1605 | #define bfd_elf32_bfd_set_private_flags i370_elf_set_private_flags |
| 1606 | #define bfd_elf32_bfd_merge_private_bfd_data i370_elf_merge_private_bfd_data |
| 1607 | #define elf_backend_relocate_section i370_elf_relocate_section |
| 1608 | |
| 1609 | /* dynamic loader support is mostly broken; just enough here to be able to |
| 1610 | * link glibc's ld.so without errors. |
| 1611 | */ |
| 1612 | #define elf_backend_create_dynamic_sections i370_elf_create_dynamic_sections |
| 1613 | #define elf_backend_size_dynamic_sections i370_elf_size_dynamic_sections |
| 1614 | #define elf_backend_finish_dynamic_sections i370_elf_finish_dynamic_sections |
| 1615 | #define elf_backend_fake_sections i370_elf_fake_sections |
| 1616 | #define elf_backend_section_from_shdr i370_elf_section_from_shdr |
| 1617 | #define elf_backend_adjust_dynamic_symbol i370_elf_adjust_dynamic_symbol |
| 1618 | #define elf_backend_check_relocs i370_elf_check_relocs |
| 1619 | |
| 1620 | /* |
| 1621 | #define elf_backend_add_symbol_hook i370_elf_add_symbol_hook |
| 1622 | #define elf_backend_finish_dynamic_symbol i370_elf_finish_dynamic_symbol |
| 1623 | #define elf_backend_additional_program_headers i370_elf_additional_program_headers |
| 1624 | #define elf_backend_modify_segment_map i370_elf_modify_segment_map |
| 1625 | */ |
| 1626 | |
| 1627 | #define elf_backend_post_process_headers i370_elf_post_process_headers |
| 1628 | |
| 1629 | static int i370_noop |
| 1630 | PARAMS ((void)); |
| 1631 | |
| 1632 | static int i370_noop () |
| 1633 | { |
| 1634 | return 1; |
| 1635 | } |
| 1636 | |
| 1637 | /* we need to define these at least as no-ops to link glibc ld.so */ |
| 1638 | |
| 1639 | #define elf_backend_add_symbol_hook \ |
| 1640 | (bfd_boolean (*) \ |
| 1641 | PARAMS ((bfd *, struct bfd_link_info *, const Elf_Internal_Sym *, \ |
| 1642 | const char **, flagword *, asection **, bfd_vma *))) i370_noop |
| 1643 | #define elf_backend_finish_dynamic_symbol \ |
| 1644 | (bfd_boolean (*) \ |
| 1645 | PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *, \ |
| 1646 | Elf_Internal_Sym *))) i370_noop |
| 1647 | #define elf_backend_additional_program_headers \ |
| 1648 | (int (*) PARAMS ((bfd *))) i370_noop |
| 1649 | #define elf_backend_modify_segment_map \ |
| 1650 | (bfd_boolean (*) PARAMS ((bfd *))) i370_noop |
| 1651 | |
| 1652 | #include "elf32-target.h" |