| 1 | /* MIPS-specific support for 32-bit ELF |
| 2 | Copyright 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002 |
| 3 | Free Software Foundation, Inc. |
| 4 | |
| 5 | Most of the information added by Ian Lance Taylor, Cygnus Support, |
| 6 | <ian@cygnus.com>. |
| 7 | N32/64 ABI support added by Mark Mitchell, CodeSourcery, LLC. |
| 8 | <mark@codesourcery.com> |
| 9 | Traditional MIPS targets support added by Koundinya.K, Dansk Data |
| 10 | Elektronik & Operations Research Group. <kk@ddeorg.soft.net> |
| 11 | |
| 12 | This file is part of BFD, the Binary File Descriptor library. |
| 13 | |
| 14 | This program is free software; you can redistribute it and/or modify |
| 15 | it under the terms of the GNU General Public License as published by |
| 16 | the Free Software Foundation; either version 2 of the License, or |
| 17 | (at your option) any later version. |
| 18 | |
| 19 | This program is distributed in the hope that it will be useful, |
| 20 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 21 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 22 | GNU General Public License for more details. |
| 23 | |
| 24 | You should have received a copy of the GNU General Public License |
| 25 | along with this program; if not, write to the Free Software |
| 26 | Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ |
| 27 | |
| 28 | /* This file handles MIPS ELF targets. SGI Irix 5 uses a slightly |
| 29 | different MIPS ELF from other targets. This matters when linking. |
| 30 | This file supports both, switching at runtime. */ |
| 31 | |
| 32 | #include "bfd.h" |
| 33 | #include "sysdep.h" |
| 34 | #include "libbfd.h" |
| 35 | #include "bfdlink.h" |
| 36 | #include "genlink.h" |
| 37 | #include "elf-bfd.h" |
| 38 | #include "elfxx-mips.h" |
| 39 | #include "elf/mips.h" |
| 40 | |
| 41 | /* Get the ECOFF swapping routines. */ |
| 42 | #include "coff/sym.h" |
| 43 | #include "coff/symconst.h" |
| 44 | #include "coff/internal.h" |
| 45 | #include "coff/ecoff.h" |
| 46 | #include "coff/mips.h" |
| 47 | #define ECOFF_SIGNED_32 |
| 48 | #include "ecoffswap.h" |
| 49 | |
| 50 | static bfd_reloc_status_type mips_elf_hi16_reloc |
| 51 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 52 | static bfd_reloc_status_type mips_elf_lo16_reloc |
| 53 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 54 | static bfd_reloc_status_type mips_elf_got16_reloc |
| 55 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 56 | static bfd_reloc_status_type mips_elf_gprel32_reloc |
| 57 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 58 | static bfd_reloc_status_type mips32_64bit_reloc |
| 59 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 60 | static reloc_howto_type *bfd_elf32_bfd_reloc_type_lookup |
| 61 | PARAMS ((bfd *, bfd_reloc_code_real_type)); |
| 62 | static reloc_howto_type *mips_elf32_rtype_to_howto |
| 63 | PARAMS ((unsigned int, boolean)); |
| 64 | static void mips_info_to_howto_rel |
| 65 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rel *)); |
| 66 | static void mips_info_to_howto_rela |
| 67 | PARAMS ((bfd *, arelent *, Elf32_Internal_Rela *)); |
| 68 | static boolean mips_elf_sym_is_global PARAMS ((bfd *, asymbol *)); |
| 69 | static boolean mips_elf32_object_p PARAMS ((bfd *)); |
| 70 | static boolean mips_elf_is_local_label_name |
| 71 | PARAMS ((bfd *, const char *)); |
| 72 | static bfd_reloc_status_type mips16_jump_reloc |
| 73 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 74 | static bfd_reloc_status_type mips16_gprel_reloc |
| 75 | PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **)); |
| 76 | static bfd_reloc_status_type mips_elf_final_gp |
| 77 | PARAMS ((bfd *, asymbol *, boolean, char **, bfd_vma *)); |
| 78 | static boolean mips_elf_assign_gp PARAMS ((bfd *, bfd_vma *)); |
| 79 | static boolean elf32_mips_grok_prstatus |
| 80 | PARAMS ((bfd *, Elf_Internal_Note *)); |
| 81 | static boolean elf32_mips_grok_psinfo |
| 82 | PARAMS ((bfd *, Elf_Internal_Note *)); |
| 83 | static boolean elf32_mips_discard_info |
| 84 | PARAMS ((bfd *, struct elf_reloc_cookie *, struct bfd_link_info *)); |
| 85 | static boolean elf32_mips_write_section |
| 86 | PARAMS ((bfd *, asection *, bfd_byte *)); |
| 87 | static irix_compat_t elf32_mips_irix_compat |
| 88 | PARAMS ((bfd *)); |
| 89 | |
| 90 | extern const bfd_target bfd_elf32_bigmips_vec; |
| 91 | extern const bfd_target bfd_elf32_littlemips_vec; |
| 92 | |
| 93 | /* Nonzero if ABFD is using the N32 ABI. */ |
| 94 | #define ABI_N32_P(abfd) \ |
| 95 | ((elf_elfheader (abfd)->e_flags & EF_MIPS_ABI2) != 0) |
| 96 | |
| 97 | /* Whether we are trying to be compatible with IRIX at all. */ |
| 98 | #define SGI_COMPAT(abfd) \ |
| 99 | (elf32_mips_irix_compat (abfd) != ict_none) |
| 100 | |
| 101 | /* The number of local .got entries we reserve. */ |
| 102 | #define MIPS_RESERVED_GOTNO (2) |
| 103 | |
| 104 | /* In case we're on a 32-bit machine, construct a 64-bit "-1" value |
| 105 | from smaller values. Start with zero, widen, *then* decrement. */ |
| 106 | #define MINUS_ONE (((bfd_vma)0) - 1) |
| 107 | |
| 108 | /* The relocation table used for SHT_REL sections. */ |
| 109 | |
| 110 | static reloc_howto_type elf_mips_howto_table_rel[] = |
| 111 | { |
| 112 | /* No relocation. */ |
| 113 | HOWTO (R_MIPS_NONE, /* type */ |
| 114 | 0, /* rightshift */ |
| 115 | 0, /* size (0 = byte, 1 = short, 2 = long) */ |
| 116 | 0, /* bitsize */ |
| 117 | false, /* pc_relative */ |
| 118 | 0, /* bitpos */ |
| 119 | complain_overflow_dont, /* complain_on_overflow */ |
| 120 | bfd_elf_generic_reloc, /* special_function */ |
| 121 | "R_MIPS_NONE", /* name */ |
| 122 | false, /* partial_inplace */ |
| 123 | 0, /* src_mask */ |
| 124 | 0, /* dst_mask */ |
| 125 | false), /* pcrel_offset */ |
| 126 | |
| 127 | /* 16 bit relocation. */ |
| 128 | HOWTO (R_MIPS_16, /* type */ |
| 129 | 0, /* rightshift */ |
| 130 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 131 | 16, /* bitsize */ |
| 132 | false, /* pc_relative */ |
| 133 | 0, /* bitpos */ |
| 134 | complain_overflow_signed, /* complain_on_overflow */ |
| 135 | bfd_elf_generic_reloc, /* special_function */ |
| 136 | "R_MIPS_16", /* name */ |
| 137 | true, /* partial_inplace */ |
| 138 | 0x0000ffff, /* src_mask */ |
| 139 | 0x0000ffff, /* dst_mask */ |
| 140 | false), /* pcrel_offset */ |
| 141 | |
| 142 | /* 32 bit relocation. */ |
| 143 | HOWTO (R_MIPS_32, /* type */ |
| 144 | 0, /* rightshift */ |
| 145 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 146 | 32, /* bitsize */ |
| 147 | false, /* pc_relative */ |
| 148 | 0, /* bitpos */ |
| 149 | complain_overflow_dont, /* complain_on_overflow */ |
| 150 | bfd_elf_generic_reloc, /* special_function */ |
| 151 | "R_MIPS_32", /* name */ |
| 152 | true, /* partial_inplace */ |
| 153 | 0xffffffff, /* src_mask */ |
| 154 | 0xffffffff, /* dst_mask */ |
| 155 | false), /* pcrel_offset */ |
| 156 | |
| 157 | /* 32 bit symbol relative relocation. */ |
| 158 | HOWTO (R_MIPS_REL32, /* type */ |
| 159 | 0, /* rightshift */ |
| 160 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 161 | 32, /* bitsize */ |
| 162 | false, /* pc_relative */ |
| 163 | 0, /* bitpos */ |
| 164 | complain_overflow_dont, /* complain_on_overflow */ |
| 165 | bfd_elf_generic_reloc, /* special_function */ |
| 166 | "R_MIPS_REL32", /* name */ |
| 167 | true, /* partial_inplace */ |
| 168 | 0xffffffff, /* src_mask */ |
| 169 | 0xffffffff, /* dst_mask */ |
| 170 | false), /* pcrel_offset */ |
| 171 | |
| 172 | /* 26 bit jump address. */ |
| 173 | HOWTO (R_MIPS_26, /* type */ |
| 174 | 2, /* rightshift */ |
| 175 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 176 | 26, /* bitsize */ |
| 177 | false, /* pc_relative */ |
| 178 | 0, /* bitpos */ |
| 179 | complain_overflow_dont, /* complain_on_overflow */ |
| 180 | /* This needs complex overflow |
| 181 | detection, because the upper four |
| 182 | bits must match the PC + 4. */ |
| 183 | bfd_elf_generic_reloc, /* special_function */ |
| 184 | "R_MIPS_26", /* name */ |
| 185 | true, /* partial_inplace */ |
| 186 | 0x03ffffff, /* src_mask */ |
| 187 | 0x03ffffff, /* dst_mask */ |
| 188 | false), /* pcrel_offset */ |
| 189 | |
| 190 | /* High 16 bits of symbol value. */ |
| 191 | HOWTO (R_MIPS_HI16, /* type */ |
| 192 | 0, /* rightshift */ |
| 193 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 194 | 16, /* bitsize */ |
| 195 | false, /* pc_relative */ |
| 196 | 0, /* bitpos */ |
| 197 | complain_overflow_dont, /* complain_on_overflow */ |
| 198 | mips_elf_hi16_reloc, /* special_function */ |
| 199 | "R_MIPS_HI16", /* name */ |
| 200 | true, /* partial_inplace */ |
| 201 | 0x0000ffff, /* src_mask */ |
| 202 | 0x0000ffff, /* dst_mask */ |
| 203 | false), /* pcrel_offset */ |
| 204 | |
| 205 | /* Low 16 bits of symbol value. */ |
| 206 | HOWTO (R_MIPS_LO16, /* type */ |
| 207 | 0, /* rightshift */ |
| 208 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 209 | 16, /* bitsize */ |
| 210 | false, /* pc_relative */ |
| 211 | 0, /* bitpos */ |
| 212 | complain_overflow_dont, /* complain_on_overflow */ |
| 213 | mips_elf_lo16_reloc, /* special_function */ |
| 214 | "R_MIPS_LO16", /* name */ |
| 215 | true, /* partial_inplace */ |
| 216 | 0x0000ffff, /* src_mask */ |
| 217 | 0x0000ffff, /* dst_mask */ |
| 218 | false), /* pcrel_offset */ |
| 219 | |
| 220 | /* GP relative reference. */ |
| 221 | HOWTO (R_MIPS_GPREL16, /* type */ |
| 222 | 0, /* rightshift */ |
| 223 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 224 | 16, /* bitsize */ |
| 225 | false, /* pc_relative */ |
| 226 | 0, /* bitpos */ |
| 227 | complain_overflow_signed, /* complain_on_overflow */ |
| 228 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
| 229 | "R_MIPS_GPREL16", /* name */ |
| 230 | true, /* partial_inplace */ |
| 231 | 0x0000ffff, /* src_mask */ |
| 232 | 0x0000ffff, /* dst_mask */ |
| 233 | false), /* pcrel_offset */ |
| 234 | |
| 235 | /* Reference to literal section. */ |
| 236 | HOWTO (R_MIPS_LITERAL, /* type */ |
| 237 | 0, /* rightshift */ |
| 238 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 239 | 16, /* bitsize */ |
| 240 | false, /* pc_relative */ |
| 241 | 0, /* bitpos */ |
| 242 | complain_overflow_signed, /* complain_on_overflow */ |
| 243 | _bfd_mips_elf32_gprel16_reloc, /* special_function */ |
| 244 | "R_MIPS_LITERAL", /* name */ |
| 245 | true, /* partial_inplace */ |
| 246 | 0x0000ffff, /* src_mask */ |
| 247 | 0x0000ffff, /* dst_mask */ |
| 248 | false), /* pcrel_offset */ |
| 249 | |
| 250 | /* Reference to global offset table. */ |
| 251 | HOWTO (R_MIPS_GOT16, /* type */ |
| 252 | 0, /* rightshift */ |
| 253 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 254 | 16, /* bitsize */ |
| 255 | false, /* pc_relative */ |
| 256 | 0, /* bitpos */ |
| 257 | complain_overflow_signed, /* complain_on_overflow */ |
| 258 | mips_elf_got16_reloc, /* special_function */ |
| 259 | "R_MIPS_GOT16", /* name */ |
| 260 | true, /* partial_inplace */ |
| 261 | 0x0000ffff, /* src_mask */ |
| 262 | 0x0000ffff, /* dst_mask */ |
| 263 | false), /* pcrel_offset */ |
| 264 | |
| 265 | /* 16 bit PC relative reference. */ |
| 266 | HOWTO (R_MIPS_PC16, /* type */ |
| 267 | 0, /* rightshift */ |
| 268 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 269 | 16, /* bitsize */ |
| 270 | true, /* pc_relative */ |
| 271 | 0, /* bitpos */ |
| 272 | complain_overflow_signed, /* complain_on_overflow */ |
| 273 | bfd_elf_generic_reloc, /* special_function */ |
| 274 | "R_MIPS_PC16", /* name */ |
| 275 | true, /* partial_inplace */ |
| 276 | 0x0000ffff, /* src_mask */ |
| 277 | 0x0000ffff, /* dst_mask */ |
| 278 | true), /* pcrel_offset */ |
| 279 | |
| 280 | /* 16 bit call through global offset table. */ |
| 281 | HOWTO (R_MIPS_CALL16, /* type */ |
| 282 | 0, /* rightshift */ |
| 283 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 284 | 16, /* bitsize */ |
| 285 | false, /* pc_relative */ |
| 286 | 0, /* bitpos */ |
| 287 | complain_overflow_signed, /* complain_on_overflow */ |
| 288 | bfd_elf_generic_reloc, /* special_function */ |
| 289 | "R_MIPS_CALL16", /* name */ |
| 290 | true, /* partial_inplace */ |
| 291 | 0x0000ffff, /* src_mask */ |
| 292 | 0x0000ffff, /* dst_mask */ |
| 293 | false), /* pcrel_offset */ |
| 294 | |
| 295 | /* 32 bit GP relative reference. */ |
| 296 | HOWTO (R_MIPS_GPREL32, /* type */ |
| 297 | 0, /* rightshift */ |
| 298 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 299 | 32, /* bitsize */ |
| 300 | false, /* pc_relative */ |
| 301 | 0, /* bitpos */ |
| 302 | complain_overflow_dont, /* complain_on_overflow */ |
| 303 | mips_elf_gprel32_reloc, /* special_function */ |
| 304 | "R_MIPS_GPREL32", /* name */ |
| 305 | true, /* partial_inplace */ |
| 306 | 0xffffffff, /* src_mask */ |
| 307 | 0xffffffff, /* dst_mask */ |
| 308 | false), /* pcrel_offset */ |
| 309 | |
| 310 | /* The remaining relocs are defined on Irix 5, although they are |
| 311 | not defined by the ABI. */ |
| 312 | EMPTY_HOWTO (13), |
| 313 | EMPTY_HOWTO (14), |
| 314 | EMPTY_HOWTO (15), |
| 315 | |
| 316 | /* A 5 bit shift field. */ |
| 317 | HOWTO (R_MIPS_SHIFT5, /* type */ |
| 318 | 0, /* rightshift */ |
| 319 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 320 | 5, /* bitsize */ |
| 321 | false, /* pc_relative */ |
| 322 | 6, /* bitpos */ |
| 323 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 324 | bfd_elf_generic_reloc, /* special_function */ |
| 325 | "R_MIPS_SHIFT5", /* name */ |
| 326 | true, /* partial_inplace */ |
| 327 | 0x000007c0, /* src_mask */ |
| 328 | 0x000007c0, /* dst_mask */ |
| 329 | false), /* pcrel_offset */ |
| 330 | |
| 331 | /* A 6 bit shift field. */ |
| 332 | /* FIXME: This is not handled correctly; a special function is |
| 333 | needed to put the most significant bit in the right place. */ |
| 334 | HOWTO (R_MIPS_SHIFT6, /* type */ |
| 335 | 0, /* rightshift */ |
| 336 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 337 | 6, /* bitsize */ |
| 338 | false, /* pc_relative */ |
| 339 | 6, /* bitpos */ |
| 340 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 341 | bfd_elf_generic_reloc, /* special_function */ |
| 342 | "R_MIPS_SHIFT6", /* name */ |
| 343 | true, /* partial_inplace */ |
| 344 | 0x000007c4, /* src_mask */ |
| 345 | 0x000007c4, /* dst_mask */ |
| 346 | false), /* pcrel_offset */ |
| 347 | |
| 348 | /* A 64 bit relocation. */ |
| 349 | HOWTO (R_MIPS_64, /* type */ |
| 350 | 0, /* rightshift */ |
| 351 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 352 | 64, /* bitsize */ |
| 353 | false, /* pc_relative */ |
| 354 | 0, /* bitpos */ |
| 355 | complain_overflow_dont, /* complain_on_overflow */ |
| 356 | mips32_64bit_reloc, /* special_function */ |
| 357 | "R_MIPS_64", /* name */ |
| 358 | true, /* partial_inplace */ |
| 359 | MINUS_ONE, /* src_mask */ |
| 360 | MINUS_ONE, /* dst_mask */ |
| 361 | false), /* pcrel_offset */ |
| 362 | |
| 363 | /* Displacement in the global offset table. */ |
| 364 | HOWTO (R_MIPS_GOT_DISP, /* type */ |
| 365 | 0, /* rightshift */ |
| 366 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 367 | 16, /* bitsize */ |
| 368 | false, /* pc_relative */ |
| 369 | 0, /* bitpos */ |
| 370 | complain_overflow_signed, /* complain_on_overflow */ |
| 371 | bfd_elf_generic_reloc, /* special_function */ |
| 372 | "R_MIPS_GOT_DISP", /* name */ |
| 373 | true, /* partial_inplace */ |
| 374 | 0x0000ffff, /* src_mask */ |
| 375 | 0x0000ffff, /* dst_mask */ |
| 376 | false), /* pcrel_offset */ |
| 377 | |
| 378 | /* Displacement to page pointer in the global offset table. */ |
| 379 | HOWTO (R_MIPS_GOT_PAGE, /* type */ |
| 380 | 0, /* rightshift */ |
| 381 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 382 | 16, /* bitsize */ |
| 383 | false, /* pc_relative */ |
| 384 | 0, /* bitpos */ |
| 385 | complain_overflow_signed, /* complain_on_overflow */ |
| 386 | bfd_elf_generic_reloc, /* special_function */ |
| 387 | "R_MIPS_GOT_PAGE", /* name */ |
| 388 | true, /* partial_inplace */ |
| 389 | 0x0000ffff, /* src_mask */ |
| 390 | 0x0000ffff, /* dst_mask */ |
| 391 | false), /* pcrel_offset */ |
| 392 | |
| 393 | /* Offset from page pointer in the global offset table. */ |
| 394 | HOWTO (R_MIPS_GOT_OFST, /* type */ |
| 395 | 0, /* rightshift */ |
| 396 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 397 | 16, /* bitsize */ |
| 398 | false, /* pc_relative */ |
| 399 | 0, /* bitpos */ |
| 400 | complain_overflow_signed, /* complain_on_overflow */ |
| 401 | bfd_elf_generic_reloc, /* special_function */ |
| 402 | "R_MIPS_GOT_OFST", /* name */ |
| 403 | true, /* partial_inplace */ |
| 404 | 0x0000ffff, /* src_mask */ |
| 405 | 0x0000ffff, /* dst_mask */ |
| 406 | false), /* pcrel_offset */ |
| 407 | |
| 408 | /* High 16 bits of displacement in global offset table. */ |
| 409 | HOWTO (R_MIPS_GOT_HI16, /* type */ |
| 410 | 0, /* rightshift */ |
| 411 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 412 | 16, /* bitsize */ |
| 413 | false, /* pc_relative */ |
| 414 | 0, /* bitpos */ |
| 415 | complain_overflow_dont, /* complain_on_overflow */ |
| 416 | bfd_elf_generic_reloc, /* special_function */ |
| 417 | "R_MIPS_GOT_HI16", /* name */ |
| 418 | true, /* partial_inplace */ |
| 419 | 0x0000ffff, /* src_mask */ |
| 420 | 0x0000ffff, /* dst_mask */ |
| 421 | false), /* pcrel_offset */ |
| 422 | |
| 423 | /* Low 16 bits of displacement in global offset table. */ |
| 424 | HOWTO (R_MIPS_GOT_LO16, /* 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_dont, /* complain_on_overflow */ |
| 431 | bfd_elf_generic_reloc, /* special_function */ |
| 432 | "R_MIPS_GOT_LO16", /* name */ |
| 433 | true, /* partial_inplace */ |
| 434 | 0x0000ffff, /* src_mask */ |
| 435 | 0x0000ffff, /* dst_mask */ |
| 436 | false), /* pcrel_offset */ |
| 437 | |
| 438 | /* 64 bit subtraction. Used in the N32 ABI. */ |
| 439 | HOWTO (R_MIPS_SUB, /* type */ |
| 440 | 0, /* rightshift */ |
| 441 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 442 | 64, /* bitsize */ |
| 443 | false, /* pc_relative */ |
| 444 | 0, /* bitpos */ |
| 445 | complain_overflow_dont, /* complain_on_overflow */ |
| 446 | bfd_elf_generic_reloc, /* special_function */ |
| 447 | "R_MIPS_SUB", /* name */ |
| 448 | true, /* partial_inplace */ |
| 449 | MINUS_ONE, /* src_mask */ |
| 450 | MINUS_ONE, /* dst_mask */ |
| 451 | false), /* pcrel_offset */ |
| 452 | |
| 453 | /* Used to cause the linker to insert and delete instructions? */ |
| 454 | EMPTY_HOWTO (R_MIPS_INSERT_A), |
| 455 | EMPTY_HOWTO (R_MIPS_INSERT_B), |
| 456 | EMPTY_HOWTO (R_MIPS_DELETE), |
| 457 | |
| 458 | /* Get the higher value of a 64 bit addend. */ |
| 459 | HOWTO (R_MIPS_HIGHER, /* type */ |
| 460 | 0, /* rightshift */ |
| 461 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 462 | 16, /* bitsize */ |
| 463 | false, /* pc_relative */ |
| 464 | 0, /* bitpos */ |
| 465 | complain_overflow_dont, /* complain_on_overflow */ |
| 466 | bfd_elf_generic_reloc, /* special_function */ |
| 467 | "R_MIPS_HIGHER", /* name */ |
| 468 | true, /* partial_inplace */ |
| 469 | 0x0000ffff, /* src_mask */ |
| 470 | 0x0000ffff, /* dst_mask */ |
| 471 | false), /* pcrel_offset */ |
| 472 | |
| 473 | /* Get the highest value of a 64 bit addend. */ |
| 474 | HOWTO (R_MIPS_HIGHEST, /* type */ |
| 475 | 0, /* rightshift */ |
| 476 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 477 | 16, /* bitsize */ |
| 478 | false, /* pc_relative */ |
| 479 | 0, /* bitpos */ |
| 480 | complain_overflow_dont, /* complain_on_overflow */ |
| 481 | bfd_elf_generic_reloc, /* special_function */ |
| 482 | "R_MIPS_HIGHEST", /* name */ |
| 483 | true, /* partial_inplace */ |
| 484 | 0x0000ffff, /* src_mask */ |
| 485 | 0x0000ffff, /* dst_mask */ |
| 486 | false), /* pcrel_offset */ |
| 487 | |
| 488 | /* High 16 bits of displacement in global offset table. */ |
| 489 | HOWTO (R_MIPS_CALL_HI16, /* type */ |
| 490 | 0, /* rightshift */ |
| 491 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 492 | 16, /* bitsize */ |
| 493 | false, /* pc_relative */ |
| 494 | 0, /* bitpos */ |
| 495 | complain_overflow_dont, /* complain_on_overflow */ |
| 496 | bfd_elf_generic_reloc, /* special_function */ |
| 497 | "R_MIPS_CALL_HI16", /* name */ |
| 498 | true, /* partial_inplace */ |
| 499 | 0x0000ffff, /* src_mask */ |
| 500 | 0x0000ffff, /* dst_mask */ |
| 501 | false), /* pcrel_offset */ |
| 502 | |
| 503 | /* Low 16 bits of displacement in global offset table. */ |
| 504 | HOWTO (R_MIPS_CALL_LO16, /* type */ |
| 505 | 0, /* rightshift */ |
| 506 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 507 | 16, /* bitsize */ |
| 508 | false, /* pc_relative */ |
| 509 | 0, /* bitpos */ |
| 510 | complain_overflow_dont, /* complain_on_overflow */ |
| 511 | bfd_elf_generic_reloc, /* special_function */ |
| 512 | "R_MIPS_CALL_LO16", /* name */ |
| 513 | true, /* partial_inplace */ |
| 514 | 0x0000ffff, /* src_mask */ |
| 515 | 0x0000ffff, /* dst_mask */ |
| 516 | false), /* pcrel_offset */ |
| 517 | |
| 518 | /* Section displacement. */ |
| 519 | HOWTO (R_MIPS_SCN_DISP, /* type */ |
| 520 | 0, /* rightshift */ |
| 521 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 522 | 32, /* bitsize */ |
| 523 | false, /* pc_relative */ |
| 524 | 0, /* bitpos */ |
| 525 | complain_overflow_dont, /* complain_on_overflow */ |
| 526 | bfd_elf_generic_reloc, /* special_function */ |
| 527 | "R_MIPS_SCN_DISP", /* name */ |
| 528 | true, /* partial_inplace */ |
| 529 | 0xffffffff, /* src_mask */ |
| 530 | 0xffffffff, /* dst_mask */ |
| 531 | false), /* pcrel_offset */ |
| 532 | |
| 533 | EMPTY_HOWTO (R_MIPS_REL16), |
| 534 | EMPTY_HOWTO (R_MIPS_ADD_IMMEDIATE), |
| 535 | EMPTY_HOWTO (R_MIPS_PJUMP), |
| 536 | EMPTY_HOWTO (R_MIPS_RELGOT), |
| 537 | |
| 538 | /* Protected jump conversion. This is an optimization hint. No |
| 539 | relocation is required for correctness. */ |
| 540 | HOWTO (R_MIPS_JALR, /* type */ |
| 541 | 0, /* rightshift */ |
| 542 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 543 | 32, /* bitsize */ |
| 544 | false, /* pc_relative */ |
| 545 | 0, /* bitpos */ |
| 546 | complain_overflow_dont, /* complain_on_overflow */ |
| 547 | bfd_elf_generic_reloc, /* special_function */ |
| 548 | "R_MIPS_JALR", /* name */ |
| 549 | false, /* partial_inplace */ |
| 550 | 0x00000000, /* src_mask */ |
| 551 | 0x00000000, /* dst_mask */ |
| 552 | false), /* pcrel_offset */ |
| 553 | }; |
| 554 | |
| 555 | /* The reloc used for BFD_RELOC_CTOR when doing a 64 bit link. This |
| 556 | is a hack to make the linker think that we need 64 bit values. */ |
| 557 | static reloc_howto_type elf_mips_ctor64_howto = |
| 558 | HOWTO (R_MIPS_64, /* type */ |
| 559 | 0, /* rightshift */ |
| 560 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 561 | 32, /* bitsize */ |
| 562 | false, /* pc_relative */ |
| 563 | 0, /* bitpos */ |
| 564 | complain_overflow_signed, /* complain_on_overflow */ |
| 565 | mips32_64bit_reloc, /* special_function */ |
| 566 | "R_MIPS_64", /* name */ |
| 567 | true, /* partial_inplace */ |
| 568 | 0xffffffff, /* src_mask */ |
| 569 | 0xffffffff, /* dst_mask */ |
| 570 | false); /* pcrel_offset */ |
| 571 | |
| 572 | /* The reloc used for the mips16 jump instruction. */ |
| 573 | static reloc_howto_type elf_mips16_jump_howto = |
| 574 | HOWTO (R_MIPS16_26, /* type */ |
| 575 | 2, /* rightshift */ |
| 576 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 577 | 26, /* bitsize */ |
| 578 | false, /* pc_relative */ |
| 579 | 0, /* bitpos */ |
| 580 | complain_overflow_dont, /* complain_on_overflow */ |
| 581 | /* This needs complex overflow |
| 582 | detection, because the upper four |
| 583 | bits must match the PC. */ |
| 584 | mips16_jump_reloc, /* special_function */ |
| 585 | "R_MIPS16_26", /* name */ |
| 586 | true, /* partial_inplace */ |
| 587 | 0x3ffffff, /* src_mask */ |
| 588 | 0x3ffffff, /* dst_mask */ |
| 589 | false); /* pcrel_offset */ |
| 590 | |
| 591 | /* The reloc used for the mips16 gprel instruction. */ |
| 592 | static reloc_howto_type elf_mips16_gprel_howto = |
| 593 | HOWTO (R_MIPS16_GPREL, /* type */ |
| 594 | 0, /* rightshift */ |
| 595 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 596 | 16, /* bitsize */ |
| 597 | false, /* pc_relative */ |
| 598 | 0, /* bitpos */ |
| 599 | complain_overflow_signed, /* complain_on_overflow */ |
| 600 | mips16_gprel_reloc, /* special_function */ |
| 601 | "R_MIPS16_GPREL", /* name */ |
| 602 | true, /* partial_inplace */ |
| 603 | 0x07ff001f, /* src_mask */ |
| 604 | 0x07ff001f, /* dst_mask */ |
| 605 | false); /* pcrel_offset */ |
| 606 | |
| 607 | /* GNU extensions for embedded-pic. */ |
| 608 | /* High 16 bits of symbol value, pc-relative. */ |
| 609 | static reloc_howto_type elf_mips_gnu_rel_hi16 = |
| 610 | HOWTO (R_MIPS_GNU_REL_HI16, /* type */ |
| 611 | 0, /* rightshift */ |
| 612 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 613 | 16, /* bitsize */ |
| 614 | true, /* pc_relative */ |
| 615 | 0, /* bitpos */ |
| 616 | complain_overflow_dont, /* complain_on_overflow */ |
| 617 | mips_elf_hi16_reloc, /* special_function */ |
| 618 | "R_MIPS_GNU_REL_HI16", /* name */ |
| 619 | true, /* partial_inplace */ |
| 620 | 0xffff, /* src_mask */ |
| 621 | 0xffff, /* dst_mask */ |
| 622 | true); /* pcrel_offset */ |
| 623 | |
| 624 | /* Low 16 bits of symbol value, pc-relative. */ |
| 625 | static reloc_howto_type elf_mips_gnu_rel_lo16 = |
| 626 | HOWTO (R_MIPS_GNU_REL_LO16, /* type */ |
| 627 | 0, /* rightshift */ |
| 628 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 629 | 16, /* bitsize */ |
| 630 | true, /* pc_relative */ |
| 631 | 0, /* bitpos */ |
| 632 | complain_overflow_dont, /* complain_on_overflow */ |
| 633 | mips_elf_lo16_reloc, /* special_function */ |
| 634 | "R_MIPS_GNU_REL_LO16", /* name */ |
| 635 | true, /* partial_inplace */ |
| 636 | 0xffff, /* src_mask */ |
| 637 | 0xffff, /* dst_mask */ |
| 638 | true); /* pcrel_offset */ |
| 639 | |
| 640 | /* 16 bit offset for pc-relative branches. */ |
| 641 | static reloc_howto_type elf_mips_gnu_rel16_s2 = |
| 642 | HOWTO (R_MIPS_GNU_REL16_S2, /* type */ |
| 643 | 2, /* rightshift */ |
| 644 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 645 | 16, /* bitsize */ |
| 646 | true, /* pc_relative */ |
| 647 | 0, /* bitpos */ |
| 648 | complain_overflow_signed, /* complain_on_overflow */ |
| 649 | bfd_elf_generic_reloc, /* special_function */ |
| 650 | "R_MIPS_GNU_REL16_S2", /* name */ |
| 651 | true, /* partial_inplace */ |
| 652 | 0xffff, /* src_mask */ |
| 653 | 0xffff, /* dst_mask */ |
| 654 | true); /* pcrel_offset */ |
| 655 | |
| 656 | /* 64 bit pc-relative. */ |
| 657 | static reloc_howto_type elf_mips_gnu_pcrel64 = |
| 658 | HOWTO (R_MIPS_PC64, /* type */ |
| 659 | 0, /* rightshift */ |
| 660 | 4, /* size (0 = byte, 1 = short, 2 = long) */ |
| 661 | 64, /* bitsize */ |
| 662 | true, /* pc_relative */ |
| 663 | 0, /* bitpos */ |
| 664 | complain_overflow_signed, /* complain_on_overflow */ |
| 665 | bfd_elf_generic_reloc, /* special_function */ |
| 666 | "R_MIPS_PC64", /* name */ |
| 667 | true, /* partial_inplace */ |
| 668 | MINUS_ONE, /* src_mask */ |
| 669 | MINUS_ONE, /* dst_mask */ |
| 670 | true); /* pcrel_offset */ |
| 671 | |
| 672 | /* 32 bit pc-relative. */ |
| 673 | static reloc_howto_type elf_mips_gnu_pcrel32 = |
| 674 | HOWTO (R_MIPS_PC32, /* type */ |
| 675 | 0, /* rightshift */ |
| 676 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 677 | 32, /* bitsize */ |
| 678 | true, /* pc_relative */ |
| 679 | 0, /* bitpos */ |
| 680 | complain_overflow_signed, /* complain_on_overflow */ |
| 681 | bfd_elf_generic_reloc, /* special_function */ |
| 682 | "R_MIPS_PC32", /* name */ |
| 683 | true, /* partial_inplace */ |
| 684 | 0xffffffff, /* src_mask */ |
| 685 | 0xffffffff, /* dst_mask */ |
| 686 | true); /* pcrel_offset */ |
| 687 | |
| 688 | /* GNU extension to record C++ vtable hierarchy */ |
| 689 | static reloc_howto_type elf_mips_gnu_vtinherit_howto = |
| 690 | HOWTO (R_MIPS_GNU_VTINHERIT, /* type */ |
| 691 | 0, /* rightshift */ |
| 692 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 693 | 0, /* bitsize */ |
| 694 | false, /* pc_relative */ |
| 695 | 0, /* bitpos */ |
| 696 | complain_overflow_dont, /* complain_on_overflow */ |
| 697 | NULL, /* special_function */ |
| 698 | "R_MIPS_GNU_VTINHERIT", /* name */ |
| 699 | false, /* partial_inplace */ |
| 700 | 0, /* src_mask */ |
| 701 | 0, /* dst_mask */ |
| 702 | false); /* pcrel_offset */ |
| 703 | |
| 704 | /* GNU extension to record C++ vtable member usage */ |
| 705 | static reloc_howto_type elf_mips_gnu_vtentry_howto = |
| 706 | HOWTO (R_MIPS_GNU_VTENTRY, /* type */ |
| 707 | 0, /* rightshift */ |
| 708 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 709 | 0, /* bitsize */ |
| 710 | false, /* pc_relative */ |
| 711 | 0, /* bitpos */ |
| 712 | complain_overflow_dont, /* complain_on_overflow */ |
| 713 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 714 | "R_MIPS_GNU_VTENTRY", /* name */ |
| 715 | false, /* partial_inplace */ |
| 716 | 0, /* src_mask */ |
| 717 | 0, /* dst_mask */ |
| 718 | false); /* pcrel_offset */ |
| 719 | |
| 720 | /* Do a R_MIPS_HI16 relocation. This has to be done in combination |
| 721 | with a R_MIPS_LO16 reloc, because there is a carry from the LO16 to |
| 722 | the HI16. Here we just save the information we need; we do the |
| 723 | actual relocation when we see the LO16. |
| 724 | |
| 725 | MIPS ELF requires that the LO16 immediately follow the HI16. As a |
| 726 | GNU extension, for non-pc-relative relocations, we permit an |
| 727 | arbitrary number of HI16 relocs to be associated with a single LO16 |
| 728 | reloc. This extension permits gcc to output the HI and LO relocs |
| 729 | itself. |
| 730 | |
| 731 | This cannot be done for PC-relative relocations because both the HI16 |
| 732 | and LO16 parts of the relocations must be done relative to the LO16 |
| 733 | part, and there can be carry to or borrow from the HI16 part. */ |
| 734 | |
| 735 | struct mips_hi16 |
| 736 | { |
| 737 | struct mips_hi16 *next; |
| 738 | bfd_byte *addr; |
| 739 | bfd_vma addend; |
| 740 | }; |
| 741 | |
| 742 | /* FIXME: This should not be a static variable. */ |
| 743 | |
| 744 | static struct mips_hi16 *mips_hi16_list; |
| 745 | |
| 746 | static bfd_reloc_status_type |
| 747 | mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 748 | output_bfd, error_message) |
| 749 | bfd *abfd ATTRIBUTE_UNUSED; |
| 750 | arelent *reloc_entry; |
| 751 | asymbol *symbol; |
| 752 | PTR data; |
| 753 | asection *input_section; |
| 754 | bfd *output_bfd; |
| 755 | char **error_message; |
| 756 | { |
| 757 | bfd_reloc_status_type ret; |
| 758 | bfd_vma relocation; |
| 759 | struct mips_hi16 *n; |
| 760 | |
| 761 | /* If we're relocating, and this is an external symbol, we don't want |
| 762 | to change anything. */ |
| 763 | if (output_bfd != (bfd *) NULL |
| 764 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 765 | && reloc_entry->addend == 0) |
| 766 | { |
| 767 | reloc_entry->address += input_section->output_offset; |
| 768 | return bfd_reloc_ok; |
| 769 | } |
| 770 | |
| 771 | ret = bfd_reloc_ok; |
| 772 | |
| 773 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
| 774 | { |
| 775 | boolean relocateable; |
| 776 | bfd_vma gp; |
| 777 | |
| 778 | if (ret == bfd_reloc_undefined) |
| 779 | abort (); |
| 780 | |
| 781 | if (output_bfd != NULL) |
| 782 | relocateable = true; |
| 783 | else |
| 784 | { |
| 785 | relocateable = false; |
| 786 | output_bfd = symbol->section->output_section->owner; |
| 787 | } |
| 788 | |
| 789 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
| 790 | error_message, &gp); |
| 791 | if (ret != bfd_reloc_ok) |
| 792 | return ret; |
| 793 | |
| 794 | relocation = gp - reloc_entry->address; |
| 795 | } |
| 796 | else |
| 797 | { |
| 798 | if (bfd_is_und_section (symbol->section) |
| 799 | && output_bfd == (bfd *) NULL) |
| 800 | ret = bfd_reloc_undefined; |
| 801 | |
| 802 | if (bfd_is_com_section (symbol->section)) |
| 803 | relocation = 0; |
| 804 | else |
| 805 | relocation = symbol->value; |
| 806 | } |
| 807 | |
| 808 | relocation += symbol->section->output_section->vma; |
| 809 | relocation += symbol->section->output_offset; |
| 810 | relocation += reloc_entry->addend; |
| 811 | |
| 812 | if (reloc_entry->address > input_section->_cooked_size) |
| 813 | return bfd_reloc_outofrange; |
| 814 | |
| 815 | /* Save the information, and let LO16 do the actual relocation. */ |
| 816 | n = (struct mips_hi16 *) bfd_malloc ((bfd_size_type) sizeof *n); |
| 817 | if (n == NULL) |
| 818 | return bfd_reloc_outofrange; |
| 819 | n->addr = (bfd_byte *) data + reloc_entry->address; |
| 820 | n->addend = relocation; |
| 821 | n->next = mips_hi16_list; |
| 822 | mips_hi16_list = n; |
| 823 | |
| 824 | if (output_bfd != (bfd *) NULL) |
| 825 | reloc_entry->address += input_section->output_offset; |
| 826 | |
| 827 | return ret; |
| 828 | } |
| 829 | |
| 830 | /* Do a R_MIPS_LO16 relocation. This is a straightforward 16 bit |
| 831 | inplace relocation; this function exists in order to do the |
| 832 | R_MIPS_HI16 relocation described above. */ |
| 833 | |
| 834 | static bfd_reloc_status_type |
| 835 | mips_elf_lo16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 836 | output_bfd, error_message) |
| 837 | bfd *abfd; |
| 838 | arelent *reloc_entry; |
| 839 | asymbol *symbol; |
| 840 | PTR data; |
| 841 | asection *input_section; |
| 842 | bfd *output_bfd; |
| 843 | char **error_message; |
| 844 | { |
| 845 | arelent gp_disp_relent; |
| 846 | |
| 847 | if (mips_hi16_list != NULL) |
| 848 | { |
| 849 | struct mips_hi16 *l; |
| 850 | |
| 851 | l = mips_hi16_list; |
| 852 | while (l != NULL) |
| 853 | { |
| 854 | unsigned long insn; |
| 855 | unsigned long val; |
| 856 | unsigned long vallo; |
| 857 | struct mips_hi16 *next; |
| 858 | |
| 859 | /* Do the HI16 relocation. Note that we actually don't need |
| 860 | to know anything about the LO16 itself, except where to |
| 861 | find the low 16 bits of the addend needed by the LO16. */ |
| 862 | insn = bfd_get_32 (abfd, l->addr); |
| 863 | vallo = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 864 | |
| 865 | /* The low order 16 bits are always treated as a signed |
| 866 | value. */ |
| 867 | vallo = ((vallo & 0xffff) ^ 0x8000) - 0x8000; |
| 868 | val = ((insn & 0xffff) << 16) + vallo; |
| 869 | val += l->addend; |
| 870 | |
| 871 | /* If PC-relative, we need to subtract out the address of the LO |
| 872 | half of the HI/LO. (The actual relocation is relative |
| 873 | to that instruction.) */ |
| 874 | if (reloc_entry->howto->pc_relative) |
| 875 | val -= reloc_entry->address; |
| 876 | |
| 877 | /* At this point, "val" has the value of the combined HI/LO |
| 878 | pair. If the low order 16 bits (which will be used for |
| 879 | the LO16 insn) are negative, then we will need an |
| 880 | adjustment for the high order 16 bits. */ |
| 881 | val += 0x8000; |
| 882 | val = (val >> 16) & 0xffff; |
| 883 | |
| 884 | insn &= ~ (bfd_vma) 0xffff; |
| 885 | insn |= val; |
| 886 | bfd_put_32 (abfd, (bfd_vma) insn, l->addr); |
| 887 | |
| 888 | if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
| 889 | { |
| 890 | gp_disp_relent = *reloc_entry; |
| 891 | reloc_entry = &gp_disp_relent; |
| 892 | reloc_entry->addend = l->addend; |
| 893 | } |
| 894 | |
| 895 | next = l->next; |
| 896 | free (l); |
| 897 | l = next; |
| 898 | } |
| 899 | |
| 900 | mips_hi16_list = NULL; |
| 901 | } |
| 902 | else if (strcmp (bfd_asymbol_name (symbol), "_gp_disp") == 0) |
| 903 | { |
| 904 | bfd_reloc_status_type ret; |
| 905 | bfd_vma gp, relocation; |
| 906 | |
| 907 | /* FIXME: Does this case ever occur? */ |
| 908 | |
| 909 | ret = mips_elf_final_gp (output_bfd, symbol, true, error_message, &gp); |
| 910 | if (ret != bfd_reloc_ok) |
| 911 | return ret; |
| 912 | |
| 913 | relocation = gp - reloc_entry->address; |
| 914 | relocation += symbol->section->output_section->vma; |
| 915 | relocation += symbol->section->output_offset; |
| 916 | relocation += reloc_entry->addend; |
| 917 | |
| 918 | if (reloc_entry->address > input_section->_cooked_size) |
| 919 | return bfd_reloc_outofrange; |
| 920 | |
| 921 | gp_disp_relent = *reloc_entry; |
| 922 | reloc_entry = &gp_disp_relent; |
| 923 | reloc_entry->addend = relocation - 4; |
| 924 | } |
| 925 | |
| 926 | /* Now do the LO16 reloc in the usual way. */ |
| 927 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 928 | input_section, output_bfd, error_message); |
| 929 | } |
| 930 | |
| 931 | /* Do a R_MIPS_GOT16 reloc. This is a reloc against the global offset |
| 932 | table used for PIC code. If the symbol is an external symbol, the |
| 933 | instruction is modified to contain the offset of the appropriate |
| 934 | entry in the global offset table. If the symbol is a section |
| 935 | symbol, the next reloc is a R_MIPS_LO16 reloc. The two 16 bit |
| 936 | addends are combined to form the real addend against the section |
| 937 | symbol; the GOT16 is modified to contain the offset of an entry in |
| 938 | the global offset table, and the LO16 is modified to offset it |
| 939 | appropriately. Thus an offset larger than 16 bits requires a |
| 940 | modified value in the global offset table. |
| 941 | |
| 942 | This implementation suffices for the assembler, but the linker does |
| 943 | not yet know how to create global offset tables. */ |
| 944 | |
| 945 | static bfd_reloc_status_type |
| 946 | mips_elf_got16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 947 | output_bfd, error_message) |
| 948 | bfd *abfd; |
| 949 | arelent *reloc_entry; |
| 950 | asymbol *symbol; |
| 951 | PTR data; |
| 952 | asection *input_section; |
| 953 | bfd *output_bfd; |
| 954 | char **error_message; |
| 955 | { |
| 956 | /* If we're relocating, and this is an external symbol, we don't want |
| 957 | to change anything. */ |
| 958 | if (output_bfd != (bfd *) NULL |
| 959 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 960 | && reloc_entry->addend == 0) |
| 961 | { |
| 962 | reloc_entry->address += input_section->output_offset; |
| 963 | return bfd_reloc_ok; |
| 964 | } |
| 965 | |
| 966 | /* If we're relocating, and this is a local symbol, we can handle it |
| 967 | just like HI16. */ |
| 968 | if (output_bfd != (bfd *) NULL |
| 969 | && (symbol->flags & BSF_SECTION_SYM) != 0) |
| 970 | return mips_elf_hi16_reloc (abfd, reloc_entry, symbol, data, |
| 971 | input_section, output_bfd, error_message); |
| 972 | |
| 973 | abort (); |
| 974 | } |
| 975 | |
| 976 | /* Set the GP value for OUTPUT_BFD. Returns false if this is a |
| 977 | dangerous relocation. */ |
| 978 | |
| 979 | static boolean |
| 980 | mips_elf_assign_gp (output_bfd, pgp) |
| 981 | bfd *output_bfd; |
| 982 | bfd_vma *pgp; |
| 983 | { |
| 984 | unsigned int count; |
| 985 | asymbol **sym; |
| 986 | unsigned int i; |
| 987 | |
| 988 | /* If we've already figured out what GP will be, just return it. */ |
| 989 | *pgp = _bfd_get_gp_value (output_bfd); |
| 990 | if (*pgp) |
| 991 | return true; |
| 992 | |
| 993 | count = bfd_get_symcount (output_bfd); |
| 994 | sym = bfd_get_outsymbols (output_bfd); |
| 995 | |
| 996 | /* The linker script will have created a symbol named `_gp' with the |
| 997 | appropriate value. */ |
| 998 | if (sym == (asymbol **) NULL) |
| 999 | i = count; |
| 1000 | else |
| 1001 | { |
| 1002 | for (i = 0; i < count; i++, sym++) |
| 1003 | { |
| 1004 | register const char *name; |
| 1005 | |
| 1006 | name = bfd_asymbol_name (*sym); |
| 1007 | if (*name == '_' && strcmp (name, "_gp") == 0) |
| 1008 | { |
| 1009 | *pgp = bfd_asymbol_value (*sym); |
| 1010 | _bfd_set_gp_value (output_bfd, *pgp); |
| 1011 | break; |
| 1012 | } |
| 1013 | } |
| 1014 | } |
| 1015 | |
| 1016 | if (i >= count) |
| 1017 | { |
| 1018 | /* Only get the error once. */ |
| 1019 | *pgp = 4; |
| 1020 | _bfd_set_gp_value (output_bfd, *pgp); |
| 1021 | return false; |
| 1022 | } |
| 1023 | |
| 1024 | return true; |
| 1025 | } |
| 1026 | |
| 1027 | /* We have to figure out the gp value, so that we can adjust the |
| 1028 | symbol value correctly. We look up the symbol _gp in the output |
| 1029 | BFD. If we can't find it, we're stuck. We cache it in the ELF |
| 1030 | target data. We don't need to adjust the symbol value for an |
| 1031 | external symbol if we are producing relocateable output. */ |
| 1032 | |
| 1033 | static bfd_reloc_status_type |
| 1034 | mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, pgp) |
| 1035 | bfd *output_bfd; |
| 1036 | asymbol *symbol; |
| 1037 | boolean relocateable; |
| 1038 | char **error_message; |
| 1039 | bfd_vma *pgp; |
| 1040 | { |
| 1041 | if (bfd_is_und_section (symbol->section) |
| 1042 | && ! relocateable) |
| 1043 | { |
| 1044 | *pgp = 0; |
| 1045 | return bfd_reloc_undefined; |
| 1046 | } |
| 1047 | |
| 1048 | *pgp = _bfd_get_gp_value (output_bfd); |
| 1049 | if (*pgp == 0 |
| 1050 | && (! relocateable |
| 1051 | || (symbol->flags & BSF_SECTION_SYM) != 0)) |
| 1052 | { |
| 1053 | if (relocateable) |
| 1054 | { |
| 1055 | /* Make up a value. */ |
| 1056 | *pgp = symbol->section->output_section->vma + 0x4000; |
| 1057 | _bfd_set_gp_value (output_bfd, *pgp); |
| 1058 | } |
| 1059 | else if (!mips_elf_assign_gp (output_bfd, pgp)) |
| 1060 | { |
| 1061 | *error_message = |
| 1062 | (char *) _("GP relative relocation when _gp not defined"); |
| 1063 | return bfd_reloc_dangerous; |
| 1064 | } |
| 1065 | } |
| 1066 | |
| 1067 | return bfd_reloc_ok; |
| 1068 | } |
| 1069 | |
| 1070 | /* Do a R_MIPS_GPREL16 relocation. This is a 16 bit value which must |
| 1071 | become the offset from the gp register. This function also handles |
| 1072 | R_MIPS_LITERAL relocations, although those can be handled more |
| 1073 | cleverly because the entries in the .lit8 and .lit4 sections can be |
| 1074 | merged. */ |
| 1075 | |
| 1076 | bfd_reloc_status_type |
| 1077 | _bfd_mips_elf32_gprel16_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 1078 | output_bfd, error_message) |
| 1079 | bfd *abfd; |
| 1080 | arelent *reloc_entry; |
| 1081 | asymbol *symbol; |
| 1082 | PTR data; |
| 1083 | asection *input_section; |
| 1084 | bfd *output_bfd; |
| 1085 | char **error_message; |
| 1086 | { |
| 1087 | boolean relocateable; |
| 1088 | bfd_reloc_status_type ret; |
| 1089 | bfd_vma gp; |
| 1090 | |
| 1091 | /* If we're relocating, and this is an external symbol with no |
| 1092 | addend, we don't want to change anything. We will only have an |
| 1093 | addend if this is a newly created reloc, not read from an ELF |
| 1094 | file. */ |
| 1095 | if (output_bfd != (bfd *) NULL |
| 1096 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1097 | && reloc_entry->addend == 0) |
| 1098 | { |
| 1099 | reloc_entry->address += input_section->output_offset; |
| 1100 | return bfd_reloc_ok; |
| 1101 | } |
| 1102 | |
| 1103 | if (output_bfd != (bfd *) NULL) |
| 1104 | relocateable = true; |
| 1105 | else |
| 1106 | { |
| 1107 | relocateable = false; |
| 1108 | output_bfd = symbol->section->output_section->owner; |
| 1109 | } |
| 1110 | |
| 1111 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
| 1112 | &gp); |
| 1113 | if (ret != bfd_reloc_ok) |
| 1114 | return ret; |
| 1115 | |
| 1116 | return _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
| 1117 | input_section, relocateable, |
| 1118 | data, gp); |
| 1119 | } |
| 1120 | |
| 1121 | /* Do a R_MIPS_GPREL32 relocation. This is a 32 bit value which must |
| 1122 | become the offset from the gp register. */ |
| 1123 | |
| 1124 | static bfd_reloc_status_type gprel32_with_gp PARAMS ((bfd *, asymbol *, |
| 1125 | arelent *, asection *, |
| 1126 | boolean, PTR, bfd_vma)); |
| 1127 | |
| 1128 | static bfd_reloc_status_type |
| 1129 | mips_elf_gprel32_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 1130 | output_bfd, error_message) |
| 1131 | bfd *abfd; |
| 1132 | arelent *reloc_entry; |
| 1133 | asymbol *symbol; |
| 1134 | PTR data; |
| 1135 | asection *input_section; |
| 1136 | bfd *output_bfd; |
| 1137 | char **error_message; |
| 1138 | { |
| 1139 | boolean relocateable; |
| 1140 | bfd_reloc_status_type ret; |
| 1141 | bfd_vma gp; |
| 1142 | |
| 1143 | /* If we're relocating, and this is an external symbol with no |
| 1144 | addend, we don't want to change anything. We will only have an |
| 1145 | addend if this is a newly created reloc, not read from an ELF |
| 1146 | file. */ |
| 1147 | if (output_bfd != (bfd *) NULL |
| 1148 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1149 | && reloc_entry->addend == 0) |
| 1150 | { |
| 1151 | *error_message = (char *) |
| 1152 | _("32bits gp relative relocation occurs for an external symbol"); |
| 1153 | return bfd_reloc_outofrange; |
| 1154 | } |
| 1155 | |
| 1156 | if (output_bfd != (bfd *) NULL) |
| 1157 | { |
| 1158 | relocateable = true; |
| 1159 | gp = _bfd_get_gp_value (output_bfd); |
| 1160 | } |
| 1161 | else |
| 1162 | { |
| 1163 | relocateable = false; |
| 1164 | output_bfd = symbol->section->output_section->owner; |
| 1165 | |
| 1166 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, |
| 1167 | error_message, &gp); |
| 1168 | if (ret != bfd_reloc_ok) |
| 1169 | return ret; |
| 1170 | } |
| 1171 | |
| 1172 | return gprel32_with_gp (abfd, symbol, reloc_entry, input_section, |
| 1173 | relocateable, data, gp); |
| 1174 | } |
| 1175 | |
| 1176 | static bfd_reloc_status_type |
| 1177 | gprel32_with_gp (abfd, symbol, reloc_entry, input_section, relocateable, data, |
| 1178 | gp) |
| 1179 | bfd *abfd; |
| 1180 | asymbol *symbol; |
| 1181 | arelent *reloc_entry; |
| 1182 | asection *input_section; |
| 1183 | boolean relocateable; |
| 1184 | PTR data; |
| 1185 | bfd_vma gp; |
| 1186 | { |
| 1187 | bfd_vma relocation; |
| 1188 | unsigned long val; |
| 1189 | |
| 1190 | if (bfd_is_com_section (symbol->section)) |
| 1191 | relocation = 0; |
| 1192 | else |
| 1193 | relocation = symbol->value; |
| 1194 | |
| 1195 | relocation += symbol->section->output_section->vma; |
| 1196 | relocation += symbol->section->output_offset; |
| 1197 | |
| 1198 | if (reloc_entry->address > input_section->_cooked_size) |
| 1199 | return bfd_reloc_outofrange; |
| 1200 | |
| 1201 | if (reloc_entry->howto->src_mask == 0) |
| 1202 | { |
| 1203 | /* This case arises with the 64-bit MIPS ELF ABI. */ |
| 1204 | val = 0; |
| 1205 | } |
| 1206 | else |
| 1207 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 1208 | |
| 1209 | /* Set val to the offset into the section or symbol. */ |
| 1210 | val += reloc_entry->addend; |
| 1211 | |
| 1212 | /* Adjust val for the final section location and GP value. If we |
| 1213 | are producing relocateable output, we don't want to do this for |
| 1214 | an external symbol. */ |
| 1215 | if (! relocateable |
| 1216 | || (symbol->flags & BSF_SECTION_SYM) != 0) |
| 1217 | val += relocation - gp; |
| 1218 | |
| 1219 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + reloc_entry->address); |
| 1220 | |
| 1221 | if (relocateable) |
| 1222 | reloc_entry->address += input_section->output_offset; |
| 1223 | |
| 1224 | return bfd_reloc_ok; |
| 1225 | } |
| 1226 | |
| 1227 | /* Handle a 64 bit reloc in a 32 bit MIPS ELF file. These are |
| 1228 | generated when addresses are 64 bits. The upper 32 bits are a simple |
| 1229 | sign extension. */ |
| 1230 | |
| 1231 | static bfd_reloc_status_type |
| 1232 | mips32_64bit_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 1233 | output_bfd, error_message) |
| 1234 | bfd *abfd; |
| 1235 | arelent *reloc_entry; |
| 1236 | asymbol *symbol; |
| 1237 | PTR data; |
| 1238 | asection *input_section; |
| 1239 | bfd *output_bfd; |
| 1240 | char **error_message; |
| 1241 | { |
| 1242 | bfd_reloc_status_type r; |
| 1243 | arelent reloc32; |
| 1244 | unsigned long val; |
| 1245 | bfd_size_type addr; |
| 1246 | |
| 1247 | r = bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 1248 | input_section, output_bfd, error_message); |
| 1249 | if (r != bfd_reloc_continue) |
| 1250 | return r; |
| 1251 | |
| 1252 | /* Do a normal 32 bit relocation on the lower 32 bits. */ |
| 1253 | reloc32 = *reloc_entry; |
| 1254 | if (bfd_big_endian (abfd)) |
| 1255 | reloc32.address += 4; |
| 1256 | reloc32.howto = &elf_mips_howto_table_rel[R_MIPS_32]; |
| 1257 | r = bfd_perform_relocation (abfd, &reloc32, data, input_section, |
| 1258 | output_bfd, error_message); |
| 1259 | |
| 1260 | /* Sign extend into the upper 32 bits. */ |
| 1261 | val = bfd_get_32 (abfd, (bfd_byte *) data + reloc32.address); |
| 1262 | if ((val & 0x80000000) != 0) |
| 1263 | val = 0xffffffff; |
| 1264 | else |
| 1265 | val = 0; |
| 1266 | addr = reloc_entry->address; |
| 1267 | if (bfd_little_endian (abfd)) |
| 1268 | addr += 4; |
| 1269 | bfd_put_32 (abfd, (bfd_vma) val, (bfd_byte *) data + addr); |
| 1270 | |
| 1271 | return r; |
| 1272 | } |
| 1273 | |
| 1274 | /* Handle a mips16 jump. */ |
| 1275 | |
| 1276 | static bfd_reloc_status_type |
| 1277 | mips16_jump_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 1278 | output_bfd, error_message) |
| 1279 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1280 | arelent *reloc_entry; |
| 1281 | asymbol *symbol; |
| 1282 | PTR data ATTRIBUTE_UNUSED; |
| 1283 | asection *input_section; |
| 1284 | bfd *output_bfd; |
| 1285 | char **error_message ATTRIBUTE_UNUSED; |
| 1286 | { |
| 1287 | if (output_bfd != (bfd *) NULL |
| 1288 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1289 | && reloc_entry->addend == 0) |
| 1290 | { |
| 1291 | reloc_entry->address += input_section->output_offset; |
| 1292 | return bfd_reloc_ok; |
| 1293 | } |
| 1294 | |
| 1295 | /* FIXME. */ |
| 1296 | { |
| 1297 | static boolean warned; |
| 1298 | |
| 1299 | if (! warned) |
| 1300 | (*_bfd_error_handler) |
| 1301 | (_("Linking mips16 objects into %s format is not supported"), |
| 1302 | bfd_get_target (input_section->output_section->owner)); |
| 1303 | warned = true; |
| 1304 | } |
| 1305 | |
| 1306 | return bfd_reloc_undefined; |
| 1307 | } |
| 1308 | |
| 1309 | /* Handle a mips16 GP relative reloc. */ |
| 1310 | |
| 1311 | static bfd_reloc_status_type |
| 1312 | mips16_gprel_reloc (abfd, reloc_entry, symbol, data, input_section, |
| 1313 | output_bfd, error_message) |
| 1314 | bfd *abfd; |
| 1315 | arelent *reloc_entry; |
| 1316 | asymbol *symbol; |
| 1317 | PTR data; |
| 1318 | asection *input_section; |
| 1319 | bfd *output_bfd; |
| 1320 | char **error_message; |
| 1321 | { |
| 1322 | boolean relocateable; |
| 1323 | bfd_reloc_status_type ret; |
| 1324 | bfd_vma gp; |
| 1325 | unsigned short extend, insn; |
| 1326 | unsigned long final; |
| 1327 | |
| 1328 | /* If we're relocating, and this is an external symbol with no |
| 1329 | addend, we don't want to change anything. We will only have an |
| 1330 | addend if this is a newly created reloc, not read from an ELF |
| 1331 | file. */ |
| 1332 | if (output_bfd != NULL |
| 1333 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 1334 | && reloc_entry->addend == 0) |
| 1335 | { |
| 1336 | reloc_entry->address += input_section->output_offset; |
| 1337 | return bfd_reloc_ok; |
| 1338 | } |
| 1339 | |
| 1340 | if (output_bfd != NULL) |
| 1341 | relocateable = true; |
| 1342 | else |
| 1343 | { |
| 1344 | relocateable = false; |
| 1345 | output_bfd = symbol->section->output_section->owner; |
| 1346 | } |
| 1347 | |
| 1348 | ret = mips_elf_final_gp (output_bfd, symbol, relocateable, error_message, |
| 1349 | &gp); |
| 1350 | if (ret != bfd_reloc_ok) |
| 1351 | return ret; |
| 1352 | |
| 1353 | if (reloc_entry->address > input_section->_cooked_size) |
| 1354 | return bfd_reloc_outofrange; |
| 1355 | |
| 1356 | /* Pick up the mips16 extend instruction and the real instruction. */ |
| 1357 | extend = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 1358 | insn = bfd_get_16 (abfd, (bfd_byte *) data + reloc_entry->address + 2); |
| 1359 | |
| 1360 | /* Stuff the current addend back as a 32 bit value, do the usual |
| 1361 | relocation, and then clean up. */ |
| 1362 | bfd_put_32 (abfd, |
| 1363 | (bfd_vma) (((extend & 0x1f) << 11) |
| 1364 | | (extend & 0x7e0) |
| 1365 | | (insn & 0x1f)), |
| 1366 | (bfd_byte *) data + reloc_entry->address); |
| 1367 | |
| 1368 | ret = _bfd_mips_elf_gprel16_with_gp (abfd, symbol, reloc_entry, |
| 1369 | input_section, relocateable, data, gp); |
| 1370 | |
| 1371 | final = bfd_get_32 (abfd, (bfd_byte *) data + reloc_entry->address); |
| 1372 | bfd_put_16 (abfd, |
| 1373 | (bfd_vma) ((extend & 0xf800) |
| 1374 | | ((final >> 11) & 0x1f) |
| 1375 | | (final & 0x7e0)), |
| 1376 | (bfd_byte *) data + reloc_entry->address); |
| 1377 | bfd_put_16 (abfd, |
| 1378 | (bfd_vma) ((insn & 0xffe0) |
| 1379 | | (final & 0x1f)), |
| 1380 | (bfd_byte *) data + reloc_entry->address + 2); |
| 1381 | |
| 1382 | return ret; |
| 1383 | } |
| 1384 | |
| 1385 | /* A mapping from BFD reloc types to MIPS ELF reloc types. */ |
| 1386 | |
| 1387 | struct elf_reloc_map { |
| 1388 | bfd_reloc_code_real_type bfd_val; |
| 1389 | enum elf_mips_reloc_type elf_val; |
| 1390 | }; |
| 1391 | |
| 1392 | static const struct elf_reloc_map mips_reloc_map[] = |
| 1393 | { |
| 1394 | { BFD_RELOC_NONE, R_MIPS_NONE, }, |
| 1395 | { BFD_RELOC_16, R_MIPS_16 }, |
| 1396 | { BFD_RELOC_32, R_MIPS_32 }, |
| 1397 | /* There is no BFD reloc for R_MIPS_REL32. */ |
| 1398 | { BFD_RELOC_64, R_MIPS_64 }, |
| 1399 | { BFD_RELOC_MIPS_JMP, R_MIPS_26 }, |
| 1400 | { BFD_RELOC_HI16_S, R_MIPS_HI16 }, |
| 1401 | { BFD_RELOC_LO16, R_MIPS_LO16 }, |
| 1402 | { BFD_RELOC_GPREL16, R_MIPS_GPREL16 }, |
| 1403 | { BFD_RELOC_MIPS_LITERAL, R_MIPS_LITERAL }, |
| 1404 | { BFD_RELOC_MIPS_GOT16, R_MIPS_GOT16 }, |
| 1405 | { BFD_RELOC_16_PCREL, R_MIPS_PC16 }, |
| 1406 | { BFD_RELOC_MIPS_CALL16, R_MIPS_CALL16 }, |
| 1407 | { BFD_RELOC_GPREL32, R_MIPS_GPREL32 }, |
| 1408 | { BFD_RELOC_MIPS_GOT_HI16, R_MIPS_GOT_HI16 }, |
| 1409 | { BFD_RELOC_MIPS_GOT_LO16, R_MIPS_GOT_LO16 }, |
| 1410 | { BFD_RELOC_MIPS_CALL_HI16, R_MIPS_CALL_HI16 }, |
| 1411 | { BFD_RELOC_MIPS_CALL_LO16, R_MIPS_CALL_LO16 }, |
| 1412 | { BFD_RELOC_MIPS_SUB, R_MIPS_SUB }, |
| 1413 | { BFD_RELOC_MIPS_GOT_PAGE, R_MIPS_GOT_PAGE }, |
| 1414 | { BFD_RELOC_MIPS_GOT_OFST, R_MIPS_GOT_OFST }, |
| 1415 | { BFD_RELOC_MIPS_GOT_DISP, R_MIPS_GOT_DISP } |
| 1416 | }; |
| 1417 | |
| 1418 | /* Given a BFD reloc type, return a howto structure. */ |
| 1419 | |
| 1420 | static reloc_howto_type * |
| 1421 | bfd_elf32_bfd_reloc_type_lookup (abfd, code) |
| 1422 | bfd *abfd; |
| 1423 | bfd_reloc_code_real_type code; |
| 1424 | { |
| 1425 | unsigned int i; |
| 1426 | reloc_howto_type *howto_table = elf_mips_howto_table_rel; |
| 1427 | |
| 1428 | for (i = 0; i < sizeof (mips_reloc_map) / sizeof (struct elf_reloc_map); |
| 1429 | i++) |
| 1430 | { |
| 1431 | if (mips_reloc_map[i].bfd_val == code) |
| 1432 | return &howto_table[(int) mips_reloc_map[i].elf_val]; |
| 1433 | } |
| 1434 | |
| 1435 | switch (code) |
| 1436 | { |
| 1437 | default: |
| 1438 | bfd_set_error (bfd_error_bad_value); |
| 1439 | return NULL; |
| 1440 | |
| 1441 | case BFD_RELOC_CTOR: |
| 1442 | /* We need to handle BFD_RELOC_CTOR specially. |
| 1443 | Select the right relocation (R_MIPS_32 or R_MIPS_64) based on the |
| 1444 | size of addresses on this architecture. */ |
| 1445 | if (bfd_arch_bits_per_address (abfd) == 32) |
| 1446 | return &howto_table[(int) R_MIPS_32]; |
| 1447 | else |
| 1448 | return &elf_mips_ctor64_howto; |
| 1449 | |
| 1450 | case BFD_RELOC_MIPS16_JMP: |
| 1451 | return &elf_mips16_jump_howto; |
| 1452 | case BFD_RELOC_MIPS16_GPREL: |
| 1453 | return &elf_mips16_gprel_howto; |
| 1454 | case BFD_RELOC_VTABLE_INHERIT: |
| 1455 | return &elf_mips_gnu_vtinherit_howto; |
| 1456 | case BFD_RELOC_VTABLE_ENTRY: |
| 1457 | return &elf_mips_gnu_vtentry_howto; |
| 1458 | case BFD_RELOC_PCREL_HI16_S: |
| 1459 | return &elf_mips_gnu_rel_hi16; |
| 1460 | case BFD_RELOC_PCREL_LO16: |
| 1461 | return &elf_mips_gnu_rel_lo16; |
| 1462 | case BFD_RELOC_16_PCREL_S2: |
| 1463 | return &elf_mips_gnu_rel16_s2; |
| 1464 | case BFD_RELOC_64_PCREL: |
| 1465 | return &elf_mips_gnu_pcrel64; |
| 1466 | case BFD_RELOC_32_PCREL: |
| 1467 | return &elf_mips_gnu_pcrel32; |
| 1468 | } |
| 1469 | } |
| 1470 | |
| 1471 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ |
| 1472 | |
| 1473 | static reloc_howto_type * |
| 1474 | mips_elf32_rtype_to_howto (r_type, rela_p) |
| 1475 | unsigned int r_type; |
| 1476 | boolean rela_p ATTRIBUTE_UNUSED; |
| 1477 | { |
| 1478 | switch (r_type) |
| 1479 | { |
| 1480 | case R_MIPS16_26: |
| 1481 | return &elf_mips16_jump_howto; |
| 1482 | case R_MIPS16_GPREL: |
| 1483 | return &elf_mips16_gprel_howto; |
| 1484 | case R_MIPS_GNU_VTINHERIT: |
| 1485 | return &elf_mips_gnu_vtinherit_howto; |
| 1486 | case R_MIPS_GNU_VTENTRY: |
| 1487 | return &elf_mips_gnu_vtentry_howto; |
| 1488 | case R_MIPS_GNU_REL_HI16: |
| 1489 | return &elf_mips_gnu_rel_hi16; |
| 1490 | case R_MIPS_GNU_REL_LO16: |
| 1491 | return &elf_mips_gnu_rel_lo16; |
| 1492 | case R_MIPS_GNU_REL16_S2: |
| 1493 | return &elf_mips_gnu_rel16_s2; |
| 1494 | case R_MIPS_PC64: |
| 1495 | return &elf_mips_gnu_pcrel64; |
| 1496 | case R_MIPS_PC32: |
| 1497 | return &elf_mips_gnu_pcrel32; |
| 1498 | default: |
| 1499 | BFD_ASSERT (r_type < (unsigned int) R_MIPS_max); |
| 1500 | return &elf_mips_howto_table_rel[r_type]; |
| 1501 | } |
| 1502 | } |
| 1503 | |
| 1504 | /* Given a MIPS Elf32_Internal_Rel, fill in an arelent structure. */ |
| 1505 | |
| 1506 | static void |
| 1507 | mips_info_to_howto_rel (abfd, cache_ptr, dst) |
| 1508 | bfd *abfd; |
| 1509 | arelent *cache_ptr; |
| 1510 | Elf32_Internal_Rel *dst; |
| 1511 | { |
| 1512 | unsigned int r_type; |
| 1513 | |
| 1514 | r_type = ELF32_R_TYPE (dst->r_info); |
| 1515 | cache_ptr->howto = mips_elf32_rtype_to_howto (r_type, false); |
| 1516 | |
| 1517 | /* The addend for a GPREL16 or LITERAL relocation comes from the GP |
| 1518 | value for the object file. We get the addend now, rather than |
| 1519 | when we do the relocation, because the symbol manipulations done |
| 1520 | by the linker may cause us to lose track of the input BFD. */ |
| 1521 | if (((*cache_ptr->sym_ptr_ptr)->flags & BSF_SECTION_SYM) != 0 |
| 1522 | && (r_type == (unsigned int) R_MIPS_GPREL16 |
| 1523 | || r_type == (unsigned int) R_MIPS_LITERAL)) |
| 1524 | cache_ptr->addend = elf_gp (abfd); |
| 1525 | } |
| 1526 | |
| 1527 | /* Given a MIPS Elf32_Internal_Rela, fill in an arelent structure. */ |
| 1528 | |
| 1529 | static void |
| 1530 | mips_info_to_howto_rela (abfd, cache_ptr, dst) |
| 1531 | bfd *abfd; |
| 1532 | arelent *cache_ptr; |
| 1533 | Elf32_Internal_Rela *dst; |
| 1534 | { |
| 1535 | /* Since an Elf32_Internal_Rel is an initial prefix of an |
| 1536 | Elf32_Internal_Rela, we can just use mips_info_to_howto_rel |
| 1537 | above. */ |
| 1538 | mips_info_to_howto_rel (abfd, cache_ptr, (Elf32_Internal_Rel *) dst); |
| 1539 | |
| 1540 | /* If we ever need to do any extra processing with dst->r_addend |
| 1541 | (the field omitted in an Elf32_Internal_Rel) we can do it here. */ |
| 1542 | } |
| 1543 | \f |
| 1544 | /* Determine whether a symbol is global for the purposes of splitting |
| 1545 | the symbol table into global symbols and local symbols. At least |
| 1546 | on Irix 5, this split must be between section symbols and all other |
| 1547 | symbols. On most ELF targets the split is between static symbols |
| 1548 | and externally visible symbols. */ |
| 1549 | |
| 1550 | static boolean |
| 1551 | mips_elf_sym_is_global (abfd, sym) |
| 1552 | bfd *abfd ATTRIBUTE_UNUSED; |
| 1553 | asymbol *sym; |
| 1554 | { |
| 1555 | if (SGI_COMPAT (abfd)) |
| 1556 | return (sym->flags & BSF_SECTION_SYM) == 0; |
| 1557 | else |
| 1558 | return ((sym->flags & (BSF_GLOBAL | BSF_WEAK)) != 0 |
| 1559 | || bfd_is_und_section (bfd_get_section (sym)) |
| 1560 | || bfd_is_com_section (bfd_get_section (sym))); |
| 1561 | } |
| 1562 | \f |
| 1563 | /* Set the right machine number for a MIPS ELF file. */ |
| 1564 | |
| 1565 | static boolean |
| 1566 | mips_elf32_object_p (abfd) |
| 1567 | bfd *abfd; |
| 1568 | { |
| 1569 | unsigned long mach; |
| 1570 | |
| 1571 | /* Irix 5 and 6 are broken. Object file symbol tables are not always |
| 1572 | sorted correctly such that local symbols precede global symbols, |
| 1573 | and the sh_info field in the symbol table is not always right. */ |
| 1574 | if (SGI_COMPAT (abfd)) |
| 1575 | elf_bad_symtab (abfd) = true; |
| 1576 | |
| 1577 | mach = _bfd_elf_mips_mach (elf_elfheader (abfd)->e_flags); |
| 1578 | bfd_default_set_arch_mach (abfd, bfd_arch_mips, mach); |
| 1579 | |
| 1580 | return true; |
| 1581 | } |
| 1582 | \f |
| 1583 | /* MIPS ELF local labels start with '$', not 'L'. */ |
| 1584 | |
| 1585 | static boolean |
| 1586 | mips_elf_is_local_label_name (abfd, name) |
| 1587 | bfd *abfd; |
| 1588 | const char *name; |
| 1589 | { |
| 1590 | if (name[0] == '$') |
| 1591 | return true; |
| 1592 | |
| 1593 | /* On Irix 6, the labels go back to starting with '.', so we accept |
| 1594 | the generic ELF local label syntax as well. */ |
| 1595 | return _bfd_elf_is_local_label_name (abfd, name); |
| 1596 | } |
| 1597 | \f |
| 1598 | /* Support for core dump NOTE sections. */ |
| 1599 | static boolean |
| 1600 | elf32_mips_grok_prstatus (abfd, note) |
| 1601 | bfd *abfd; |
| 1602 | Elf_Internal_Note *note; |
| 1603 | { |
| 1604 | int offset; |
| 1605 | unsigned int raw_size; |
| 1606 | |
| 1607 | switch (note->descsz) |
| 1608 | { |
| 1609 | default: |
| 1610 | return false; |
| 1611 | |
| 1612 | case 256: /* Linux/MIPS */ |
| 1613 | /* pr_cursig */ |
| 1614 | elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12); |
| 1615 | |
| 1616 | /* pr_pid */ |
| 1617 | elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 24); |
| 1618 | |
| 1619 | /* pr_reg */ |
| 1620 | offset = 72; |
| 1621 | raw_size = 180; |
| 1622 | |
| 1623 | break; |
| 1624 | } |
| 1625 | |
| 1626 | /* Make a ".reg/999" section. */ |
| 1627 | return _bfd_elfcore_make_pseudosection (abfd, ".reg", |
| 1628 | raw_size, note->descpos + offset); |
| 1629 | } |
| 1630 | |
| 1631 | static boolean |
| 1632 | elf32_mips_grok_psinfo (abfd, note) |
| 1633 | bfd *abfd; |
| 1634 | Elf_Internal_Note *note; |
| 1635 | { |
| 1636 | switch (note->descsz) |
| 1637 | { |
| 1638 | default: |
| 1639 | return false; |
| 1640 | |
| 1641 | case 128: /* Linux/MIPS elf_prpsinfo */ |
| 1642 | elf_tdata (abfd)->core_program |
| 1643 | = _bfd_elfcore_strndup (abfd, note->descdata + 32, 16); |
| 1644 | elf_tdata (abfd)->core_command |
| 1645 | = _bfd_elfcore_strndup (abfd, note->descdata + 48, 80); |
| 1646 | } |
| 1647 | |
| 1648 | /* Note that for some reason, a spurious space is tacked |
| 1649 | onto the end of the args in some (at least one anyway) |
| 1650 | implementations, so strip it off if it exists. */ |
| 1651 | |
| 1652 | { |
| 1653 | char *command = elf_tdata (abfd)->core_command; |
| 1654 | int n = strlen (command); |
| 1655 | |
| 1656 | if (0 < n && command[n - 1] == ' ') |
| 1657 | command[n - 1] = '\0'; |
| 1658 | } |
| 1659 | |
| 1660 | return true; |
| 1661 | } |
| 1662 | \f |
| 1663 | #define PDR_SIZE 32 |
| 1664 | |
| 1665 | static boolean |
| 1666 | elf32_mips_discard_info (abfd, cookie, info) |
| 1667 | bfd *abfd; |
| 1668 | struct elf_reloc_cookie *cookie; |
| 1669 | struct bfd_link_info *info; |
| 1670 | { |
| 1671 | asection *o; |
| 1672 | boolean ret = false; |
| 1673 | unsigned char *tdata; |
| 1674 | size_t i, skip; |
| 1675 | |
| 1676 | o = bfd_get_section_by_name (abfd, ".pdr"); |
| 1677 | if (! o) |
| 1678 | return false; |
| 1679 | if (o->_raw_size == 0) |
| 1680 | return false; |
| 1681 | if (o->_raw_size % PDR_SIZE != 0) |
| 1682 | return false; |
| 1683 | if (o->output_section != NULL |
| 1684 | && bfd_is_abs_section (o->output_section)) |
| 1685 | return false; |
| 1686 | |
| 1687 | tdata = bfd_zmalloc (o->_raw_size / PDR_SIZE); |
| 1688 | if (! tdata) |
| 1689 | return false; |
| 1690 | |
| 1691 | cookie->rels = _bfd_elf32_link_read_relocs (abfd, o, (PTR) NULL, |
| 1692 | (Elf_Internal_Rela *) NULL, |
| 1693 | info->keep_memory); |
| 1694 | if (!cookie->rels) |
| 1695 | { |
| 1696 | free (tdata); |
| 1697 | return false; |
| 1698 | } |
| 1699 | |
| 1700 | cookie->rel = cookie->rels; |
| 1701 | cookie->relend = cookie->rels + o->reloc_count; |
| 1702 | |
| 1703 | for (i = 0, skip = 0; i < o->_raw_size; i ++) |
| 1704 | { |
| 1705 | if (_bfd_elf32_reloc_symbol_deleted_p (i * PDR_SIZE, cookie)) |
| 1706 | { |
| 1707 | tdata[i] = 1; |
| 1708 | skip ++; |
| 1709 | } |
| 1710 | } |
| 1711 | |
| 1712 | if (skip != 0) |
| 1713 | { |
| 1714 | elf_section_data (o)->tdata = tdata; |
| 1715 | o->_cooked_size = o->_raw_size - skip * PDR_SIZE; |
| 1716 | ret = true; |
| 1717 | } |
| 1718 | else |
| 1719 | free (tdata); |
| 1720 | |
| 1721 | if (! info->keep_memory) |
| 1722 | free (cookie->rels); |
| 1723 | |
| 1724 | return ret; |
| 1725 | } |
| 1726 | |
| 1727 | static boolean |
| 1728 | elf32_mips_write_section (output_bfd, sec, contents) |
| 1729 | bfd *output_bfd; |
| 1730 | asection *sec; |
| 1731 | bfd_byte *contents; |
| 1732 | { |
| 1733 | bfd_byte *to, *from, *end; |
| 1734 | int i; |
| 1735 | |
| 1736 | if (strcmp (sec->name, ".pdr") != 0) |
| 1737 | return false; |
| 1738 | |
| 1739 | if (elf_section_data (sec)->tdata == NULL) |
| 1740 | return false; |
| 1741 | |
| 1742 | to = contents; |
| 1743 | end = contents + sec->_raw_size; |
| 1744 | for (from = contents, i = 0; |
| 1745 | from < end; |
| 1746 | from += PDR_SIZE, i++) |
| 1747 | { |
| 1748 | if (((unsigned char *)elf_section_data (sec)->tdata)[i] == 1) |
| 1749 | continue; |
| 1750 | if (to != from) |
| 1751 | memcpy (to, from, PDR_SIZE); |
| 1752 | to += PDR_SIZE; |
| 1753 | } |
| 1754 | bfd_set_section_contents (output_bfd, sec->output_section, contents, |
| 1755 | (file_ptr) sec->output_offset, |
| 1756 | sec->_cooked_size); |
| 1757 | return true; |
| 1758 | } |
| 1759 | |
| 1760 | /* Depending on the target vector we generate some version of Irix |
| 1761 | executables or "normal" MIPS ELF ABI executables. */ |
| 1762 | static irix_compat_t |
| 1763 | elf32_mips_irix_compat (abfd) |
| 1764 | bfd *abfd; |
| 1765 | { |
| 1766 | if ((abfd->xvec == &bfd_elf32_bigmips_vec) |
| 1767 | || (abfd->xvec == &bfd_elf32_littlemips_vec)) |
| 1768 | return ict_irix5; |
| 1769 | else |
| 1770 | return ict_none; |
| 1771 | } |
| 1772 | \f |
| 1773 | /* Given a data section and an in-memory embedded reloc section, store |
| 1774 | relocation information into the embedded reloc section which can be |
| 1775 | used at runtime to relocate the data section. This is called by the |
| 1776 | linker when the --embedded-relocs switch is used. This is called |
| 1777 | after the add_symbols entry point has been called for all the |
| 1778 | objects, and before the final_link entry point is called. */ |
| 1779 | |
| 1780 | boolean |
| 1781 | bfd_mips_elf32_create_embedded_relocs (abfd, info, datasec, relsec, errmsg) |
| 1782 | bfd *abfd; |
| 1783 | struct bfd_link_info *info; |
| 1784 | asection *datasec; |
| 1785 | asection *relsec; |
| 1786 | char **errmsg; |
| 1787 | { |
| 1788 | Elf_Internal_Shdr *symtab_hdr; |
| 1789 | Elf_Internal_Shdr *shndx_hdr; |
| 1790 | Elf32_External_Sym *extsyms; |
| 1791 | Elf32_External_Sym *free_extsyms = NULL; |
| 1792 | Elf_External_Sym_Shndx *shndx_buf = NULL; |
| 1793 | Elf_Internal_Rela *internal_relocs; |
| 1794 | Elf_Internal_Rela *free_relocs = NULL; |
| 1795 | Elf_Internal_Rela *irel, *irelend; |
| 1796 | bfd_byte *p; |
| 1797 | bfd_size_type amt; |
| 1798 | |
| 1799 | BFD_ASSERT (! info->relocateable); |
| 1800 | |
| 1801 | *errmsg = NULL; |
| 1802 | |
| 1803 | if (datasec->reloc_count == 0) |
| 1804 | return true; |
| 1805 | |
| 1806 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 1807 | /* Read this BFD's symbols if we haven't done so already, or get the cached |
| 1808 | copy if it exists. */ |
| 1809 | if (symtab_hdr->contents != NULL) |
| 1810 | extsyms = (Elf32_External_Sym *) symtab_hdr->contents; |
| 1811 | else |
| 1812 | { |
| 1813 | /* Go get them off disk. */ |
| 1814 | if (info->keep_memory) |
| 1815 | extsyms = ((Elf32_External_Sym *) |
| 1816 | bfd_alloc (abfd, symtab_hdr->sh_size)); |
| 1817 | else |
| 1818 | extsyms = ((Elf32_External_Sym *) |
| 1819 | bfd_malloc (symtab_hdr->sh_size)); |
| 1820 | if (extsyms == NULL) |
| 1821 | goto error_return; |
| 1822 | if (! info->keep_memory) |
| 1823 | free_extsyms = extsyms; |
| 1824 | if (bfd_seek (abfd, symtab_hdr->sh_offset, SEEK_SET) != 0 |
| 1825 | || (bfd_bread (extsyms, symtab_hdr->sh_size, abfd) |
| 1826 | != symtab_hdr->sh_size)) |
| 1827 | goto error_return; |
| 1828 | if (info->keep_memory) |
| 1829 | symtab_hdr->contents = (unsigned char *) extsyms; |
| 1830 | } |
| 1831 | |
| 1832 | shndx_hdr = &elf_tdata (abfd)->symtab_shndx_hdr; |
| 1833 | if (shndx_hdr->sh_size != 0) |
| 1834 | { |
| 1835 | amt = symtab_hdr->sh_info * sizeof (Elf_External_Sym_Shndx); |
| 1836 | shndx_buf = (Elf_External_Sym_Shndx *) bfd_malloc (amt); |
| 1837 | if (shndx_buf == NULL) |
| 1838 | goto error_return; |
| 1839 | if (bfd_seek (abfd, shndx_hdr->sh_offset, SEEK_SET) != 0 |
| 1840 | || bfd_bread ((PTR) shndx_buf, amt, abfd) != amt) |
| 1841 | goto error_return; |
| 1842 | } |
| 1843 | |
| 1844 | /* Get a copy of the native relocations. */ |
| 1845 | internal_relocs = (_bfd_elf32_link_read_relocs |
| 1846 | (abfd, datasec, (PTR) NULL, (Elf_Internal_Rela *) NULL, |
| 1847 | info->keep_memory)); |
| 1848 | if (internal_relocs == NULL) |
| 1849 | goto error_return; |
| 1850 | if (! info->keep_memory) |
| 1851 | free_relocs = internal_relocs; |
| 1852 | |
| 1853 | relsec->contents = (bfd_byte *) bfd_alloc (abfd, datasec->reloc_count * 12); |
| 1854 | if (relsec->contents == NULL) |
| 1855 | goto error_return; |
| 1856 | |
| 1857 | p = relsec->contents; |
| 1858 | |
| 1859 | irelend = internal_relocs + datasec->reloc_count; |
| 1860 | |
| 1861 | for (irel = internal_relocs; irel < irelend; irel++, p += 12) |
| 1862 | { |
| 1863 | asection *targetsec; |
| 1864 | |
| 1865 | /* We are going to write a four byte longword into the runtime |
| 1866 | reloc section. The longword will be the address in the data |
| 1867 | section which must be relocated. It is followed by the name |
| 1868 | of the target section NUL-padded or truncated to 8 |
| 1869 | characters. */ |
| 1870 | |
| 1871 | /* We can only relocate absolute longword relocs at run time. */ |
| 1872 | if ((ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_32) && |
| 1873 | (ELF32_R_TYPE (irel->r_info) != (int) R_MIPS_64)) |
| 1874 | { |
| 1875 | *errmsg = _("unsupported reloc type"); |
| 1876 | bfd_set_error (bfd_error_bad_value); |
| 1877 | goto error_return; |
| 1878 | } |
| 1879 | /* Get the target section referred to by the reloc. */ |
| 1880 | if (ELF32_R_SYM (irel->r_info) < symtab_hdr->sh_info) |
| 1881 | { |
| 1882 | Elf32_External_Sym *esym; |
| 1883 | Elf_External_Sym_Shndx *shndx; |
| 1884 | Elf_Internal_Sym isym; |
| 1885 | |
| 1886 | /* A local symbol. */ |
| 1887 | esym = extsyms + ELF32_R_SYM (irel->r_info); |
| 1888 | shndx = shndx_buf + (shndx_buf ? ELF32_R_SYM (irel->r_info) : 0); |
| 1889 | bfd_elf32_swap_symbol_in (abfd, (const PTR) esym, (const PTR) shndx, |
| 1890 | &isym); |
| 1891 | |
| 1892 | targetsec = bfd_section_from_elf_index (abfd, isym.st_shndx); |
| 1893 | } |
| 1894 | else |
| 1895 | { |
| 1896 | unsigned long indx; |
| 1897 | struct elf_link_hash_entry *h; |
| 1898 | |
| 1899 | /* An external symbol. */ |
| 1900 | indx = ELF32_R_SYM (irel->r_info); |
| 1901 | h = elf_sym_hashes (abfd)[indx]; |
| 1902 | targetsec = NULL; |
| 1903 | /* |
| 1904 | For some reason, in certain programs, the symbol will |
| 1905 | not be in the hash table. It seems to happen when you |
| 1906 | declare a static table of pointers to const external structures. |
| 1907 | In this case, the relocs are relative to data, not |
| 1908 | text, so just treating it like an undefined link |
| 1909 | should be sufficient. */ |
| 1910 | BFD_ASSERT(h != NULL); |
| 1911 | if (h->root.type == bfd_link_hash_defined |
| 1912 | || h->root.type == bfd_link_hash_defweak) |
| 1913 | targetsec = h->root.u.def.section; |
| 1914 | } |
| 1915 | |
| 1916 | |
| 1917 | /* |
| 1918 | Set the low bit of the relocation offset if it's a MIPS64 reloc. |
| 1919 | Relocations will always be on (at least) 32-bit boundaries. */ |
| 1920 | |
| 1921 | bfd_put_32 (abfd, ((irel->r_offset + datasec->output_offset) + |
| 1922 | ((ELF32_R_TYPE (irel->r_info) == (int) R_MIPS_64) ? 1 : 0)), |
| 1923 | p); |
| 1924 | memset (p + 4, 0, 8); |
| 1925 | if (targetsec != NULL) |
| 1926 | strncpy (p + 4, targetsec->output_section->name, 8); |
| 1927 | } |
| 1928 | |
| 1929 | if (shndx_buf != NULL) |
| 1930 | free (shndx_buf); |
| 1931 | if (free_extsyms != NULL) |
| 1932 | free (free_extsyms); |
| 1933 | if (free_relocs != NULL) |
| 1934 | free (free_relocs); |
| 1935 | return true; |
| 1936 | |
| 1937 | error_return: |
| 1938 | if (shndx_buf != NULL) |
| 1939 | free (shndx_buf); |
| 1940 | if (free_extsyms != NULL) |
| 1941 | free (free_extsyms); |
| 1942 | if (free_relocs != NULL) |
| 1943 | free (free_relocs); |
| 1944 | return false; |
| 1945 | } |
| 1946 | \f |
| 1947 | /* ECOFF swapping routines. These are used when dealing with the |
| 1948 | .mdebug section, which is in the ECOFF debugging format. */ |
| 1949 | static const struct ecoff_debug_swap mips_elf32_ecoff_debug_swap = { |
| 1950 | /* Symbol table magic number. */ |
| 1951 | magicSym, |
| 1952 | /* Alignment of debugging information. E.g., 4. */ |
| 1953 | 4, |
| 1954 | /* Sizes of external symbolic information. */ |
| 1955 | sizeof (struct hdr_ext), |
| 1956 | sizeof (struct dnr_ext), |
| 1957 | sizeof (struct pdr_ext), |
| 1958 | sizeof (struct sym_ext), |
| 1959 | sizeof (struct opt_ext), |
| 1960 | sizeof (struct fdr_ext), |
| 1961 | sizeof (struct rfd_ext), |
| 1962 | sizeof (struct ext_ext), |
| 1963 | /* Functions to swap in external symbolic data. */ |
| 1964 | ecoff_swap_hdr_in, |
| 1965 | ecoff_swap_dnr_in, |
| 1966 | ecoff_swap_pdr_in, |
| 1967 | ecoff_swap_sym_in, |
| 1968 | ecoff_swap_opt_in, |
| 1969 | ecoff_swap_fdr_in, |
| 1970 | ecoff_swap_rfd_in, |
| 1971 | ecoff_swap_ext_in, |
| 1972 | _bfd_ecoff_swap_tir_in, |
| 1973 | _bfd_ecoff_swap_rndx_in, |
| 1974 | /* Functions to swap out external symbolic data. */ |
| 1975 | ecoff_swap_hdr_out, |
| 1976 | ecoff_swap_dnr_out, |
| 1977 | ecoff_swap_pdr_out, |
| 1978 | ecoff_swap_sym_out, |
| 1979 | ecoff_swap_opt_out, |
| 1980 | ecoff_swap_fdr_out, |
| 1981 | ecoff_swap_rfd_out, |
| 1982 | ecoff_swap_ext_out, |
| 1983 | _bfd_ecoff_swap_tir_out, |
| 1984 | _bfd_ecoff_swap_rndx_out, |
| 1985 | /* Function to read in symbolic data. */ |
| 1986 | _bfd_mips_elf_read_ecoff_info |
| 1987 | }; |
| 1988 | \f |
| 1989 | #define ELF_ARCH bfd_arch_mips |
| 1990 | #define ELF_MACHINE_CODE EM_MIPS |
| 1991 | |
| 1992 | /* The SVR4 MIPS ABI says that this should be 0x10000, but Irix 5 uses |
| 1993 | a value of 0x1000, and we are compatible. */ |
| 1994 | #define ELF_MAXPAGESIZE 0x1000 |
| 1995 | |
| 1996 | #define elf_backend_collect true |
| 1997 | #define elf_backend_type_change_ok true |
| 1998 | #define elf_backend_can_gc_sections true |
| 1999 | #define elf_info_to_howto mips_info_to_howto_rela |
| 2000 | #define elf_info_to_howto_rel mips_info_to_howto_rel |
| 2001 | #define elf_backend_sym_is_global mips_elf_sym_is_global |
| 2002 | #define elf_backend_object_p mips_elf32_object_p |
| 2003 | #define elf_backend_symbol_processing _bfd_mips_elf_symbol_processing |
| 2004 | #define elf_backend_section_processing _bfd_mips_elf_section_processing |
| 2005 | #define elf_backend_section_from_shdr _bfd_mips_elf_section_from_shdr |
| 2006 | #define elf_backend_fake_sections _bfd_mips_elf_fake_sections |
| 2007 | #define elf_backend_section_from_bfd_section \ |
| 2008 | _bfd_mips_elf_section_from_bfd_section |
| 2009 | #define elf_backend_add_symbol_hook _bfd_mips_elf_add_symbol_hook |
| 2010 | #define elf_backend_link_output_symbol_hook \ |
| 2011 | _bfd_mips_elf_link_output_symbol_hook |
| 2012 | #define elf_backend_create_dynamic_sections \ |
| 2013 | _bfd_mips_elf_create_dynamic_sections |
| 2014 | #define elf_backend_check_relocs _bfd_mips_elf_check_relocs |
| 2015 | #define elf_backend_adjust_dynamic_symbol \ |
| 2016 | _bfd_mips_elf_adjust_dynamic_symbol |
| 2017 | #define elf_backend_always_size_sections \ |
| 2018 | _bfd_mips_elf_always_size_sections |
| 2019 | #define elf_backend_size_dynamic_sections \ |
| 2020 | _bfd_mips_elf_size_dynamic_sections |
| 2021 | #define elf_backend_relocate_section _bfd_mips_elf_relocate_section |
| 2022 | #define elf_backend_finish_dynamic_symbol \ |
| 2023 | _bfd_mips_elf_finish_dynamic_symbol |
| 2024 | #define elf_backend_finish_dynamic_sections \ |
| 2025 | _bfd_mips_elf_finish_dynamic_sections |
| 2026 | #define elf_backend_final_write_processing \ |
| 2027 | _bfd_mips_elf_final_write_processing |
| 2028 | #define elf_backend_additional_program_headers \ |
| 2029 | _bfd_mips_elf_additional_program_headers |
| 2030 | #define elf_backend_modify_segment_map _bfd_mips_elf_modify_segment_map |
| 2031 | #define elf_backend_gc_mark_hook _bfd_mips_elf_gc_mark_hook |
| 2032 | #define elf_backend_gc_sweep_hook _bfd_mips_elf_gc_sweep_hook |
| 2033 | #define elf_backend_copy_indirect_symbol \ |
| 2034 | _bfd_mips_elf_copy_indirect_symbol |
| 2035 | #define elf_backend_hide_symbol _bfd_mips_elf_hide_symbol |
| 2036 | #define elf_backend_grok_prstatus elf32_mips_grok_prstatus |
| 2037 | #define elf_backend_grok_psinfo elf32_mips_grok_psinfo |
| 2038 | #define elf_backend_ecoff_debug_swap &mips_elf32_ecoff_debug_swap |
| 2039 | |
| 2040 | #define elf_backend_got_header_size (4 * MIPS_RESERVED_GOTNO) |
| 2041 | #define elf_backend_plt_header_size 0 |
| 2042 | #define elf_backend_may_use_rel_p 1 |
| 2043 | #define elf_backend_may_use_rela_p 0 |
| 2044 | #define elf_backend_default_use_rela_p 0 |
| 2045 | #define elf_backend_sign_extend_vma true |
| 2046 | |
| 2047 | #define elf_backend_discard_info elf32_mips_discard_info |
| 2048 | #define elf_backend_ignore_discarded_relocs \ |
| 2049 | _bfd_mips_elf_ignore_discarded_relocs |
| 2050 | #define elf_backend_write_section elf32_mips_write_section |
| 2051 | #define elf_backend_mips_irix_compat elf32_mips_irix_compat |
| 2052 | #define elf_backend_mips_rtype_to_howto mips_elf32_rtype_to_howto |
| 2053 | #define bfd_elf32_bfd_is_local_label_name \ |
| 2054 | mips_elf_is_local_label_name |
| 2055 | #define bfd_elf32_find_nearest_line _bfd_mips_elf_find_nearest_line |
| 2056 | #define bfd_elf32_set_section_contents _bfd_mips_elf_set_section_contents |
| 2057 | #define bfd_elf32_bfd_get_relocated_section_contents \ |
| 2058 | _bfd_elf_mips_get_relocated_section_contents |
| 2059 | #define bfd_elf32_bfd_link_hash_table_create \ |
| 2060 | _bfd_mips_elf_link_hash_table_create |
| 2061 | #define bfd_elf32_bfd_final_link _bfd_mips_elf_final_link |
| 2062 | #define bfd_elf32_bfd_merge_private_bfd_data \ |
| 2063 | _bfd_mips_elf_merge_private_bfd_data |
| 2064 | #define bfd_elf32_bfd_set_private_flags _bfd_mips_elf_set_private_flags |
| 2065 | #define bfd_elf32_bfd_print_private_bfd_data \ |
| 2066 | _bfd_mips_elf_print_private_bfd_data |
| 2067 | |
| 2068 | /* Support for SGI-ish mips targets. */ |
| 2069 | #define TARGET_LITTLE_SYM bfd_elf32_littlemips_vec |
| 2070 | #define TARGET_LITTLE_NAME "elf32-littlemips" |
| 2071 | #define TARGET_BIG_SYM bfd_elf32_bigmips_vec |
| 2072 | #define TARGET_BIG_NAME "elf32-bigmips" |
| 2073 | |
| 2074 | #include "elf32-target.h" |
| 2075 | |
| 2076 | /* Support for traditional mips targets. */ |
| 2077 | #define INCLUDED_TARGET_FILE /* More a type of flag. */ |
| 2078 | |
| 2079 | #undef TARGET_LITTLE_SYM |
| 2080 | #undef TARGET_LITTLE_NAME |
| 2081 | #undef TARGET_BIG_SYM |
| 2082 | #undef TARGET_BIG_NAME |
| 2083 | |
| 2084 | #define TARGET_LITTLE_SYM bfd_elf32_tradlittlemips_vec |
| 2085 | #define TARGET_LITTLE_NAME "elf32-tradlittlemips" |
| 2086 | #define TARGET_BIG_SYM bfd_elf32_tradbigmips_vec |
| 2087 | #define TARGET_BIG_NAME "elf32-tradbigmips" |
| 2088 | |
| 2089 | /* Include the target file again for this target. */ |
| 2090 | #include "elf32-target.h" |