| 1 | /* DLX specific support for 32-bit ELF |
| 2 | Copyright (C) 2002-2015 Free Software Foundation, Inc. |
| 3 | |
| 4 | This file is part of BFD, the Binary File Descriptor library. |
| 5 | |
| 6 | This program is free software; you can redistribute it and/or modify |
| 7 | it under the terms of the GNU General Public License as published by |
| 8 | the Free Software Foundation; either version 3 of the License, or |
| 9 | (at your option) any later version. |
| 10 | |
| 11 | This program is distributed in the hope that it will be useful, |
| 12 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 13 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 14 | GNU General Public License for more details. |
| 15 | |
| 16 | You should have received a copy of the GNU General Public License |
| 17 | along with this program; if not, write to the Free Software |
| 18 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 19 | MA 02110-1301, USA. */ |
| 20 | |
| 21 | #include "sysdep.h" |
| 22 | #include "bfd.h" |
| 23 | #include "libbfd.h" |
| 24 | #include "elf-bfd.h" |
| 25 | #include "elf/dlx.h" |
| 26 | |
| 27 | #define USE_REL 1 |
| 28 | |
| 29 | #define bfd_elf32_bfd_reloc_type_lookup elf32_dlx_reloc_type_lookup |
| 30 | #define bfd_elf32_bfd_reloc_name_lookup elf32_dlx_reloc_name_lookup |
| 31 | #define elf_info_to_howto elf32_dlx_info_to_howto |
| 32 | #define elf_info_to_howto_rel elf32_dlx_info_to_howto_rel |
| 33 | #define elf_backend_check_relocs elf32_dlx_check_relocs |
| 34 | |
| 35 | /* The gas default behavior is not to preform the %hi modifier so that the |
| 36 | GNU assembler can have the lower 16 bits offset placed in the insn, BUT |
| 37 | we do like the gas to indicate it is %hi reloc type so when we in the link |
| 38 | loader phase we can have the corrected hi16 vale replace the buggous lo16 |
| 39 | value that was placed there by gas. */ |
| 40 | |
| 41 | static int skip_dlx_elf_hi16_reloc = 0; |
| 42 | |
| 43 | extern int set_dlx_skip_hi16_flag (int); |
| 44 | |
| 45 | int |
| 46 | set_dlx_skip_hi16_flag (int flag) |
| 47 | { |
| 48 | skip_dlx_elf_hi16_reloc = flag; |
| 49 | return flag; |
| 50 | } |
| 51 | |
| 52 | static bfd_reloc_status_type |
| 53 | _bfd_dlx_elf_hi16_reloc (bfd *abfd, |
| 54 | arelent *reloc_entry, |
| 55 | asymbol *symbol, |
| 56 | void * data, |
| 57 | asection *input_section, |
| 58 | bfd *output_bfd, |
| 59 | char **error_message) |
| 60 | { |
| 61 | bfd_reloc_status_type ret; |
| 62 | bfd_vma relocation; |
| 63 | |
| 64 | /* If the skip flag is set then we simply do the generic relocating, this |
| 65 | is more of a hack for dlx gas/gld, so we do not need to do the %hi/%lo |
| 66 | fixup like mips gld did. */ |
| 67 | if (skip_dlx_elf_hi16_reloc) |
| 68 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 69 | input_section, output_bfd, error_message); |
| 70 | |
| 71 | /* If we're relocating, and this an external symbol, we don't want |
| 72 | to change anything. */ |
| 73 | if (output_bfd != (bfd *) NULL |
| 74 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 75 | && reloc_entry->addend == 0) |
| 76 | { |
| 77 | reloc_entry->address += input_section->output_offset; |
| 78 | return bfd_reloc_ok; |
| 79 | } |
| 80 | |
| 81 | ret = bfd_reloc_ok; |
| 82 | |
| 83 | if (bfd_is_und_section (symbol->section) |
| 84 | && output_bfd == (bfd *) NULL) |
| 85 | ret = bfd_reloc_undefined; |
| 86 | |
| 87 | relocation = (bfd_is_com_section (symbol->section)) ? 0 : symbol->value; |
| 88 | relocation += symbol->section->output_section->vma; |
| 89 | relocation += symbol->section->output_offset; |
| 90 | relocation += reloc_entry->addend; |
| 91 | relocation += bfd_get_16 (abfd, (bfd_byte *)data + reloc_entry->address); |
| 92 | |
| 93 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 94 | return bfd_reloc_outofrange; |
| 95 | |
| 96 | bfd_put_16 (abfd, (short)((relocation >> 16) & 0xFFFF), |
| 97 | (bfd_byte *)data + reloc_entry->address); |
| 98 | |
| 99 | return ret; |
| 100 | } |
| 101 | |
| 102 | /* ELF relocs are against symbols. If we are producing relocatable |
| 103 | output, and the reloc is against an external symbol, and nothing |
| 104 | has given us any additional addend, the resulting reloc will also |
| 105 | be against the same symbol. In such a case, we don't want to |
| 106 | change anything about the way the reloc is handled, since it will |
| 107 | all be done at final link time. Rather than put special case code |
| 108 | into bfd_perform_relocation, all the reloc types use this howto |
| 109 | function. It just short circuits the reloc if producing |
| 110 | relocatable output against an external symbol. */ |
| 111 | |
| 112 | static bfd_reloc_status_type |
| 113 | elf32_dlx_relocate16 (bfd *abfd, |
| 114 | arelent *reloc_entry, |
| 115 | asymbol *symbol, |
| 116 | void * data, |
| 117 | asection *input_section, |
| 118 | bfd *output_bfd, |
| 119 | char **error_message ATTRIBUTE_UNUSED) |
| 120 | { |
| 121 | unsigned long insn, vallo, allignment; |
| 122 | int val; |
| 123 | |
| 124 | /* HACK: I think this first condition is necessary when producing |
| 125 | relocatable output. After the end of HACK, the code is identical |
| 126 | to bfd_elf_generic_reloc(). I would _guess_ the first change |
| 127 | belongs there rather than here. martindo 1998-10-23. */ |
| 128 | |
| 129 | if (skip_dlx_elf_hi16_reloc) |
| 130 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 131 | input_section, output_bfd, error_message); |
| 132 | |
| 133 | /* Check undefined section and undefined symbols. */ |
| 134 | if (bfd_is_und_section (symbol->section) |
| 135 | && output_bfd == (bfd *) NULL) |
| 136 | return bfd_reloc_undefined; |
| 137 | |
| 138 | /* Can not support a long jump to sections other then .text. */ |
| 139 | if (strcmp (input_section->name, symbol->section->output_section->name) != 0) |
| 140 | { |
| 141 | (*_bfd_error_handler) (_("BFD Link Error: branch (PC rel16) to section (%s) not supported"), |
| 142 | symbol->section->output_section->name); |
| 143 | return bfd_reloc_undefined; |
| 144 | } |
| 145 | |
| 146 | insn = bfd_get_32 (abfd, (bfd_byte *)data + reloc_entry->address); |
| 147 | allignment = 1 << (input_section->output_section->alignment_power - 1); |
| 148 | vallo = insn & 0x0000FFFF; |
| 149 | |
| 150 | if (vallo & 0x8000) |
| 151 | vallo = ~(vallo | 0xFFFF0000) + 1; |
| 152 | |
| 153 | /* vallo points to the vma of next instruction. */ |
| 154 | vallo += (((unsigned long)(input_section->output_section->vma + |
| 155 | input_section->output_offset) + |
| 156 | allignment) & ~allignment); |
| 157 | |
| 158 | /* val is the displacement (PC relative to next instruction). */ |
| 159 | val = (symbol->section->output_offset + |
| 160 | symbol->section->output_section->vma + |
| 161 | symbol->value) - vallo; |
| 162 | |
| 163 | if (abs ((int) val) > 0x00007FFF) |
| 164 | return bfd_reloc_outofrange; |
| 165 | |
| 166 | insn = (insn & 0xFFFF0000) | (val & 0x0000FFFF); |
| 167 | |
| 168 | bfd_put_32 (abfd, insn, |
| 169 | (bfd_byte *) data + reloc_entry->address); |
| 170 | |
| 171 | return bfd_reloc_ok; |
| 172 | } |
| 173 | |
| 174 | static bfd_reloc_status_type |
| 175 | elf32_dlx_relocate26 (bfd *abfd, |
| 176 | arelent *reloc_entry, |
| 177 | asymbol *symbol, |
| 178 | void * data, |
| 179 | asection *input_section, |
| 180 | bfd *output_bfd, |
| 181 | char **error_message ATTRIBUTE_UNUSED) |
| 182 | { |
| 183 | unsigned long insn, vallo, allignment; |
| 184 | int val; |
| 185 | |
| 186 | /* HACK: I think this first condition is necessary when producing |
| 187 | relocatable output. After the end of HACK, the code is identical |
| 188 | to bfd_elf_generic_reloc(). I would _guess_ the first change |
| 189 | belongs there rather than here. martindo 1998-10-23. */ |
| 190 | |
| 191 | if (skip_dlx_elf_hi16_reloc) |
| 192 | return bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data, |
| 193 | input_section, output_bfd, error_message); |
| 194 | |
| 195 | /* Check undefined section and undefined symbols. */ |
| 196 | if (bfd_is_und_section (symbol->section) |
| 197 | && output_bfd == (bfd *) NULL) |
| 198 | return bfd_reloc_undefined; |
| 199 | |
| 200 | /* Can not support a long jump to sections other then .text */ |
| 201 | if (strcmp (input_section->name, symbol->section->output_section->name) != 0) |
| 202 | { |
| 203 | (*_bfd_error_handler) (_("BFD Link Error: jump (PC rel26) to section (%s) not supported"), |
| 204 | symbol->section->output_section->name); |
| 205 | return bfd_reloc_undefined; |
| 206 | } |
| 207 | |
| 208 | insn = bfd_get_32 (abfd, (bfd_byte *)data + reloc_entry->address); |
| 209 | allignment = 1 << (input_section->output_section->alignment_power - 1); |
| 210 | vallo = insn & 0x03FFFFFF; |
| 211 | |
| 212 | if (vallo & 0x03000000) |
| 213 | vallo = ~(vallo | 0xFC000000) + 1; |
| 214 | |
| 215 | /* vallo is the vma for the next instruction. */ |
| 216 | vallo += (((unsigned long) (input_section->output_section->vma + |
| 217 | input_section->output_offset) + |
| 218 | allignment) & ~allignment); |
| 219 | |
| 220 | /* val is the displacement (PC relative to next instruction). */ |
| 221 | val = (symbol->section->output_offset + |
| 222 | symbol->section->output_section->vma + symbol->value) |
| 223 | - vallo; |
| 224 | |
| 225 | if (abs ((int) val) > 0x01FFFFFF) |
| 226 | return bfd_reloc_outofrange; |
| 227 | |
| 228 | insn = (insn & 0xFC000000) | (val & 0x03FFFFFF); |
| 229 | bfd_put_32 (abfd, insn, |
| 230 | (bfd_byte *) data + reloc_entry->address); |
| 231 | |
| 232 | return bfd_reloc_ok; |
| 233 | } |
| 234 | |
| 235 | static reloc_howto_type dlx_elf_howto_table[]= |
| 236 | { |
| 237 | /* No relocation. */ |
| 238 | HOWTO (R_DLX_NONE, /* Type. */ |
| 239 | 0, /* Rightshift. */ |
| 240 | 3, /* size (0 = byte, 1 = short, 2 = long). */ |
| 241 | 0, /* Bitsize. */ |
| 242 | FALSE, /* PC_relative. */ |
| 243 | 0, /* Bitpos. */ |
| 244 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 245 | bfd_elf_generic_reloc, /* Special_function. */ |
| 246 | "R_DLX_NONE", /* Name. */ |
| 247 | FALSE, /* Partial_inplace. */ |
| 248 | 0, /* Src_mask. */ |
| 249 | 0, /* Dst_mask. */ |
| 250 | FALSE), /* PCrel_offset. */ |
| 251 | |
| 252 | /* 8 bit relocation. */ |
| 253 | HOWTO (R_DLX_RELOC_8, /* Type. */ |
| 254 | 0, /* Rightshift. */ |
| 255 | 0, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 256 | 8, /* Bitsize. */ |
| 257 | FALSE, /* PC_relative. */ |
| 258 | 0, /* Bitpos. */ |
| 259 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 260 | bfd_elf_generic_reloc, /* Special_function. */ |
| 261 | "R_DLX_RELOC_8", /* Name. */ |
| 262 | TRUE, /* Partial_inplace. */ |
| 263 | 0xff, /* Src_mask. */ |
| 264 | 0xff, /* Dst_mask. */ |
| 265 | FALSE), /* PCrel_offset. */ |
| 266 | |
| 267 | /* 16 bit relocation. */ |
| 268 | HOWTO (R_DLX_RELOC_16, /* Type. */ |
| 269 | 0, /* Rightshift. */ |
| 270 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 271 | 16, /* Bitsize. */ |
| 272 | FALSE, /* PC_relative. */ |
| 273 | 0, /* Bitpos. */ |
| 274 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 275 | bfd_elf_generic_reloc, /* Special_function. */ |
| 276 | "R_DLX_RELOC_16", /* Name. */ |
| 277 | TRUE, /* Partial_inplace. */ |
| 278 | 0xffff, /* Src_mask. */ |
| 279 | 0xffff, /* Dst_mask. */ |
| 280 | FALSE), /* PCrel_offset. */ |
| 281 | |
| 282 | /* 32 bit relocation. */ |
| 283 | HOWTO (R_DLX_RELOC_32, /* Type. */ |
| 284 | 0, /* Rightshift. */ |
| 285 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 286 | 32, /* Bitsize. */ |
| 287 | FALSE, /* PC_relative. */ |
| 288 | 0, /* Bitpos. */ |
| 289 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 290 | bfd_elf_generic_reloc, /* Special_function. */ |
| 291 | "R_DLX_RELOC_32", /* Name. */ |
| 292 | TRUE, /* Partial_inplace. */ |
| 293 | 0xffffffff, /* Src_mask. */ |
| 294 | 0xffffffff, /* Dst_mask. */ |
| 295 | FALSE), /* PCrel_offset. */ |
| 296 | |
| 297 | /* GNU extension to record C++ vtable hierarchy. */ |
| 298 | HOWTO (R_DLX_GNU_VTINHERIT, /* Type. */ |
| 299 | 0, /* Rightshift. */ |
| 300 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 301 | 0, /* Bitsize. */ |
| 302 | FALSE, /* PC_relative. */ |
| 303 | 0, /* Bitpos. */ |
| 304 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 305 | NULL, /* Special_function. */ |
| 306 | "R_DLX_GNU_VTINHERIT", /* Name. */ |
| 307 | FALSE, /* Partial_inplace. */ |
| 308 | 0, /* Src_mask. */ |
| 309 | 0, /* Dst_mask. */ |
| 310 | FALSE), /* PCrel_offset. */ |
| 311 | |
| 312 | /* GNU extension to record C++ vtable member usage. */ |
| 313 | HOWTO (R_DLX_GNU_VTENTRY, /* Type. */ |
| 314 | 0, /* Rightshift. */ |
| 315 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 316 | 0, /* Bitsize. */ |
| 317 | FALSE, /* PC_relative. */ |
| 318 | 0, /* Bitpos. */ |
| 319 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 320 | _bfd_elf_rel_vtable_reloc_fn,/* Special_function. */ |
| 321 | "R_DLX_GNU_VTENTRY", /* Name. */ |
| 322 | FALSE, /* Partial_inplace. */ |
| 323 | 0, /* Src_mask. */ |
| 324 | 0, /* Dst_mask. */ |
| 325 | FALSE) /* PCrel_offset. */ |
| 326 | }; |
| 327 | |
| 328 | /* 16 bit offset for pc-relative branches. */ |
| 329 | static reloc_howto_type elf_dlx_gnu_rel16_s2 = |
| 330 | HOWTO (R_DLX_RELOC_16_PCREL, /* Type. */ |
| 331 | 0, /* Rightshift. */ |
| 332 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 333 | 16, /* Bitsize. */ |
| 334 | TRUE, /* PC_relative. */ |
| 335 | 0, /* Bitpos. */ |
| 336 | complain_overflow_signed, /* Complain_on_overflow. */ |
| 337 | elf32_dlx_relocate16, /* Special_function. */ |
| 338 | "R_DLX_RELOC_16_PCREL",/* Name. */ |
| 339 | TRUE, /* Partial_inplace. */ |
| 340 | 0xffff, /* Src_mask. */ |
| 341 | 0xffff, /* Dst_mask. */ |
| 342 | TRUE); /* PCrel_offset. */ |
| 343 | |
| 344 | /* 26 bit offset for pc-relative branches. */ |
| 345 | static reloc_howto_type elf_dlx_gnu_rel26_s2 = |
| 346 | HOWTO (R_DLX_RELOC_26_PCREL, /* Type. */ |
| 347 | 0, /* Rightshift. */ |
| 348 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 349 | 26, /* Bitsize. */ |
| 350 | TRUE, /* PC_relative. */ |
| 351 | 0, /* Bitpos. */ |
| 352 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 353 | elf32_dlx_relocate26, /* Special_function. */ |
| 354 | "R_DLX_RELOC_26_PCREL",/* Name. */ |
| 355 | TRUE, /* Partial_inplace. */ |
| 356 | 0xffff, /* Src_mask. */ |
| 357 | 0xffff, /* Dst_mask. */ |
| 358 | TRUE); /* PCrel_offset. */ |
| 359 | |
| 360 | /* High 16 bits of symbol value. */ |
| 361 | static reloc_howto_type elf_dlx_reloc_16_hi = |
| 362 | HOWTO (R_DLX_RELOC_16_HI, /* Type. */ |
| 363 | 16, /* Rightshift. */ |
| 364 | 2, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 365 | 32, /* Bitsize. */ |
| 366 | FALSE, /* PC_relative. */ |
| 367 | 0, /* Bitpos. */ |
| 368 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 369 | _bfd_dlx_elf_hi16_reloc,/* Special_function. */ |
| 370 | "R_DLX_RELOC_16_HI", /* Name. */ |
| 371 | TRUE, /* Partial_inplace. */ |
| 372 | 0xFFFF, /* Src_mask. */ |
| 373 | 0xffff, /* Dst_mask. */ |
| 374 | FALSE); /* PCrel_offset. */ |
| 375 | |
| 376 | /* Low 16 bits of symbol value. */ |
| 377 | static reloc_howto_type elf_dlx_reloc_16_lo = |
| 378 | HOWTO (R_DLX_RELOC_16_LO, /* Type. */ |
| 379 | 0, /* Rightshift. */ |
| 380 | 1, /* Size (0 = byte, 1 = short, 2 = long). */ |
| 381 | 16, /* Bitsize. */ |
| 382 | FALSE, /* PC_relative. */ |
| 383 | 0, /* Bitpos. */ |
| 384 | complain_overflow_dont,/* Complain_on_overflow. */ |
| 385 | bfd_elf_generic_reloc, /* Special_function. */ |
| 386 | "R_DLX_RELOC_16_LO", /* Name. */ |
| 387 | TRUE, /* Partial_inplace. */ |
| 388 | 0xffff, /* Src_mask. */ |
| 389 | 0xffff, /* Dst_mask. */ |
| 390 | FALSE); /* PCrel_offset. */ |
| 391 | |
| 392 | /* A mapping from BFD reloc types to DLX ELF reloc types. |
| 393 | Stolen from elf32-mips.c. |
| 394 | |
| 395 | More about this table - for dlx elf relocation we do not really |
| 396 | need this table, if we have a rtype defined in this table will |
| 397 | caused tc_gen_relocate confused and die on us, but if we remove |
| 398 | this table it will caused more problem, so for now simple solution |
| 399 | is to remove those entries which may cause problem. */ |
| 400 | struct elf_reloc_map |
| 401 | { |
| 402 | bfd_reloc_code_real_type bfd_reloc_val; |
| 403 | enum elf_dlx_reloc_type elf_reloc_val; |
| 404 | }; |
| 405 | |
| 406 | static const struct elf_reloc_map dlx_reloc_map[] = |
| 407 | { |
| 408 | { BFD_RELOC_NONE, R_DLX_NONE }, |
| 409 | { BFD_RELOC_16, R_DLX_RELOC_16 }, |
| 410 | { BFD_RELOC_32, R_DLX_RELOC_32 }, |
| 411 | { BFD_RELOC_DLX_HI16_S, R_DLX_RELOC_16_HI }, |
| 412 | { BFD_RELOC_DLX_LO16, R_DLX_RELOC_16_LO }, |
| 413 | { BFD_RELOC_VTABLE_INHERIT, R_DLX_GNU_VTINHERIT }, |
| 414 | { BFD_RELOC_VTABLE_ENTRY, R_DLX_GNU_VTENTRY } |
| 415 | }; |
| 416 | |
| 417 | /* Look through the relocs for a section during the first phase. |
| 418 | Since we don't do .gots or .plts, we just need to consider the |
| 419 | virtual table relocs for gc. */ |
| 420 | |
| 421 | static bfd_boolean |
| 422 | elf32_dlx_check_relocs (bfd *abfd, |
| 423 | struct bfd_link_info *info, |
| 424 | asection *sec, |
| 425 | const Elf_Internal_Rela *relocs) |
| 426 | { |
| 427 | Elf_Internal_Shdr *symtab_hdr; |
| 428 | struct elf_link_hash_entry **sym_hashes; |
| 429 | const Elf_Internal_Rela *rel; |
| 430 | const Elf_Internal_Rela *rel_end; |
| 431 | |
| 432 | if (info->relocatable) |
| 433 | return TRUE; |
| 434 | |
| 435 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 436 | sym_hashes = elf_sym_hashes (abfd); |
| 437 | |
| 438 | rel_end = relocs + sec->reloc_count; |
| 439 | for (rel = relocs; rel < rel_end; rel++) |
| 440 | { |
| 441 | struct elf_link_hash_entry *h; |
| 442 | unsigned long r_symndx; |
| 443 | |
| 444 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 445 | if (r_symndx < symtab_hdr->sh_info) |
| 446 | h = NULL; |
| 447 | else |
| 448 | { |
| 449 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 450 | while (h->root.type == bfd_link_hash_indirect |
| 451 | || h->root.type == bfd_link_hash_warning) |
| 452 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 453 | |
| 454 | /* PR15323, ref flags aren't set for references in the same |
| 455 | object. */ |
| 456 | h->root.non_ir_ref = 1; |
| 457 | } |
| 458 | |
| 459 | switch (ELF32_R_TYPE (rel->r_info)) |
| 460 | { |
| 461 | /* This relocation describes the C++ object vtable hierarchy. |
| 462 | Reconstruct it for later use during GC. */ |
| 463 | case R_DLX_GNU_VTINHERIT: |
| 464 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 465 | return FALSE; |
| 466 | break; |
| 467 | |
| 468 | /* This relocation describes which C++ vtable entries are actually |
| 469 | used. Record for later use during GC. */ |
| 470 | case R_DLX_GNU_VTENTRY: |
| 471 | BFD_ASSERT (h != NULL); |
| 472 | if (h != NULL |
| 473 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 474 | return FALSE; |
| 475 | break; |
| 476 | } |
| 477 | } |
| 478 | |
| 479 | return TRUE; |
| 480 | } |
| 481 | |
| 482 | /* Given a BFD reloc type, return a howto structure. */ |
| 483 | |
| 484 | static reloc_howto_type * |
| 485 | elf32_dlx_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 486 | bfd_reloc_code_real_type code) |
| 487 | { |
| 488 | unsigned int i; |
| 489 | |
| 490 | for (i = 0; i < sizeof (dlx_reloc_map) / sizeof (struct elf_reloc_map); i++) |
| 491 | if (dlx_reloc_map[i].bfd_reloc_val == code) |
| 492 | return &dlx_elf_howto_table[(int) dlx_reloc_map[i].elf_reloc_val]; |
| 493 | |
| 494 | switch (code) |
| 495 | { |
| 496 | default: |
| 497 | bfd_set_error (bfd_error_bad_value); |
| 498 | return NULL; |
| 499 | case BFD_RELOC_16_PCREL_S2: |
| 500 | return &elf_dlx_gnu_rel16_s2; |
| 501 | case BFD_RELOC_DLX_JMP26: |
| 502 | return &elf_dlx_gnu_rel26_s2; |
| 503 | case BFD_RELOC_HI16_S: |
| 504 | return &elf_dlx_reloc_16_hi; |
| 505 | case BFD_RELOC_LO16: |
| 506 | return &elf_dlx_reloc_16_lo; |
| 507 | } |
| 508 | } |
| 509 | |
| 510 | static reloc_howto_type * |
| 511 | elf32_dlx_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 512 | const char *r_name) |
| 513 | { |
| 514 | unsigned int i; |
| 515 | |
| 516 | for (i = 0; |
| 517 | i < sizeof (dlx_elf_howto_table) / sizeof (dlx_elf_howto_table[0]); |
| 518 | i++) |
| 519 | if (dlx_elf_howto_table[i].name != NULL |
| 520 | && strcasecmp (dlx_elf_howto_table[i].name, r_name) == 0) |
| 521 | return &dlx_elf_howto_table[i]; |
| 522 | |
| 523 | if (strcasecmp (elf_dlx_gnu_rel16_s2.name, r_name) == 0) |
| 524 | return &elf_dlx_gnu_rel16_s2; |
| 525 | if (strcasecmp (elf_dlx_gnu_rel26_s2.name, r_name) == 0) |
| 526 | return &elf_dlx_gnu_rel26_s2; |
| 527 | if (strcasecmp (elf_dlx_reloc_16_hi.name, r_name) == 0) |
| 528 | return &elf_dlx_reloc_16_hi; |
| 529 | if (strcasecmp (elf_dlx_reloc_16_lo.name, r_name) == 0) |
| 530 | return &elf_dlx_reloc_16_lo; |
| 531 | |
| 532 | return NULL; |
| 533 | } |
| 534 | |
| 535 | static reloc_howto_type * |
| 536 | dlx_rtype_to_howto (unsigned int r_type) |
| 537 | { |
| 538 | switch (r_type) |
| 539 | { |
| 540 | case R_DLX_RELOC_16_PCREL: |
| 541 | return & elf_dlx_gnu_rel16_s2; |
| 542 | case R_DLX_RELOC_26_PCREL: |
| 543 | return & elf_dlx_gnu_rel26_s2; |
| 544 | case R_DLX_RELOC_16_HI: |
| 545 | return & elf_dlx_reloc_16_hi; |
| 546 | case R_DLX_RELOC_16_LO: |
| 547 | return & elf_dlx_reloc_16_lo; |
| 548 | default: |
| 549 | if (r_type >= (unsigned int) R_DLX_max) |
| 550 | { |
| 551 | _bfd_error_handler (_("Invalid DLX reloc number: %d"), r_type); |
| 552 | r_type = 0; |
| 553 | } |
| 554 | return & dlx_elf_howto_table[r_type]; |
| 555 | } |
| 556 | } |
| 557 | |
| 558 | static void |
| 559 | elf32_dlx_info_to_howto (bfd * abfd ATTRIBUTE_UNUSED, |
| 560 | arelent * cache_ptr ATTRIBUTE_UNUSED, |
| 561 | Elf_Internal_Rela * dst ATTRIBUTE_UNUSED) |
| 562 | { |
| 563 | abort (); |
| 564 | } |
| 565 | |
| 566 | static void |
| 567 | elf32_dlx_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
| 568 | arelent *cache_ptr, |
| 569 | Elf_Internal_Rela *dst) |
| 570 | { |
| 571 | unsigned int r_type; |
| 572 | |
| 573 | r_type = ELF32_R_TYPE (dst->r_info); |
| 574 | cache_ptr->howto = dlx_rtype_to_howto (r_type); |
| 575 | return; |
| 576 | } |
| 577 | |
| 578 | #define TARGET_BIG_SYM dlx_elf32_be_vec |
| 579 | #define TARGET_BIG_NAME "elf32-dlx" |
| 580 | #define ELF_ARCH bfd_arch_dlx |
| 581 | #define ELF_MACHINE_CODE EM_DLX |
| 582 | #define ELF_MAXPAGESIZE 1 /* FIXME: This number is wrong, It should be the page size in bytes. */ |
| 583 | |
| 584 | #include "elf32-target.h" |