| 1 | /* M32R-specific support for 32-bit ELF. |
| 2 | Copyright 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, |
| 3 | 2006, 2007, 2008 Free Software Foundation, Inc. |
| 4 | |
| 5 | This file is part of BFD, the Binary File Descriptor library. |
| 6 | |
| 7 | This program is free software; you can redistribute it and/or modify |
| 8 | it under the terms of the GNU General Public License as published by |
| 9 | the Free Software Foundation; either version 3 of the License, or |
| 10 | (at your option) any later version. |
| 11 | |
| 12 | This program is distributed in the hope that it will be useful, |
| 13 | but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | GNU General Public License for more details. |
| 16 | |
| 17 | You should have received a copy of the GNU General Public License |
| 18 | along with this program; if not, write to the Free Software |
| 19 | Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston, |
| 20 | MA 02110-1301, USA. */ |
| 21 | |
| 22 | #include "sysdep.h" |
| 23 | #include "bfd.h" |
| 24 | #include "libbfd.h" |
| 25 | #include "elf-bfd.h" |
| 26 | #include "elf/m32r.h" |
| 27 | |
| 28 | #define NOP_INSN 0x7000 |
| 29 | #define MAKE_PARALLEL(insn) ((insn) | 0x8000) |
| 30 | |
| 31 | /* Use REL instead of RELA to save space. |
| 32 | This only saves space in libraries and object files, but perhaps |
| 33 | relocs will be put in ROM? All in all though, REL relocs are a pain |
| 34 | to work with. */ |
| 35 | /* #define USE_REL 1 |
| 36 | |
| 37 | #ifndef USE_REL |
| 38 | #define USE_REL 0 |
| 39 | #endif */ |
| 40 | /* Use RELA. But use REL to link old objects for backwords compatibility. */ |
| 41 | |
| 42 | /* Functions for the M32R ELF linker. */ |
| 43 | |
| 44 | /* The name of the dynamic interpreter. This is put in the .interp |
| 45 | section. */ |
| 46 | |
| 47 | #define ELF_DYNAMIC_INTERPRETER "/usr/lib/libc.so.1" |
| 48 | |
| 49 | /* The nop opcode we use. */ |
| 50 | |
| 51 | #define M32R_NOP 0x7000f000 |
| 52 | |
| 53 | #define PLT_EMPTY 0x10101010 /* RIE -> RIE */ |
| 54 | |
| 55 | /* The size in bytes of an entry in the procedure linkage table. */ |
| 56 | |
| 57 | #define PLT_ENTRY_SIZE 20 |
| 58 | #define PLT_HEADER_SIZE 20 |
| 59 | |
| 60 | /* The first one entries in a procedure linkage table are reserved, |
| 61 | and the initial contents are unimportant (we zero them out). |
| 62 | Subsequent entries look like this. */ |
| 63 | |
| 64 | #define PLT0_ENTRY_WORD0 0xd6c00000 /* seth r6, #high(.got+4) */ |
| 65 | #define PLT0_ENTRY_WORD1 0x86e60000 /* or3 r6, r6, #low(.got)+4) */ |
| 66 | #define PLT0_ENTRY_WORD2 0x24e626c6 /* ld r4, @r6+ -> ld r6, @r6 */ |
| 67 | #define PLT0_ENTRY_WORD3 0x1fc6f000 /* jmp r6 || pnop */ |
| 68 | #define PLT0_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ |
| 69 | |
| 70 | #define PLT0_PIC_ENTRY_WORD0 0xa4cc0004 /* ld r4, @(4,r12) */ |
| 71 | #define PLT0_PIC_ENTRY_WORD1 0xa6cc0008 /* ld r6, @(8,r12) */ |
| 72 | #define PLT0_PIC_ENTRY_WORD2 0x1fc6f000 /* jmp r6 || nop */ |
| 73 | #define PLT0_PIC_ENTRY_WORD3 PLT_EMPTY /* RIE -> RIE */ |
| 74 | #define PLT0_PIC_ENTRY_WORD4 PLT_EMPTY /* RIE -> RIE */ |
| 75 | |
| 76 | #define PLT_ENTRY_WORD0 0xe6000000 /* ld24 r6, .name_in_GOT */ |
| 77 | #define PLT_ENTRY_WORD1 0x06acf000 /* add r6, r12 || nop */ |
| 78 | #define PLT_ENTRY_WORD0b 0xd6c00000 /* seth r6, #high(.name_in_GOT) */ |
| 79 | #define PLT_ENTRY_WORD1b 0x86e60000 /* or3 r6, r6, #low(.name_in_GOT) */ |
| 80 | #define PLT_ENTRY_WORD2 0x26c61fc6 /* ld r6, @r6 -> jmp r6 */ |
| 81 | #define PLT_ENTRY_WORD3 0xe5000000 /* ld24 r5, $offset */ |
| 82 | #define PLT_ENTRY_WORD4 0xff000000 /* bra .plt0. */ |
| 83 | |
| 84 | |
| 85 | /* Utility to actually perform an R_M32R_10_PCREL reloc. */ |
| 86 | |
| 87 | static bfd_reloc_status_type |
| 88 | m32r_elf_do_10_pcrel_reloc (bfd *abfd, |
| 89 | reloc_howto_type *howto, |
| 90 | asection *input_section, |
| 91 | bfd_byte *data, |
| 92 | bfd_vma offset, |
| 93 | asection *symbol_section ATTRIBUTE_UNUSED, |
| 94 | bfd_vma symbol_value, |
| 95 | bfd_vma addend) |
| 96 | { |
| 97 | bfd_signed_vma relocation; |
| 98 | unsigned long x; |
| 99 | bfd_reloc_status_type status; |
| 100 | |
| 101 | /* Sanity check the address (offset in section). */ |
| 102 | if (offset > bfd_get_section_limit (abfd, input_section)) |
| 103 | return bfd_reloc_outofrange; |
| 104 | |
| 105 | relocation = symbol_value + addend; |
| 106 | /* Make it pc relative. */ |
| 107 | relocation -= (input_section->output_section->vma |
| 108 | + input_section->output_offset); |
| 109 | /* These jumps mask off the lower two bits of the current address |
| 110 | before doing pcrel calculations. */ |
| 111 | relocation -= (offset & -(bfd_vma) 4); |
| 112 | |
| 113 | if (relocation < -0x200 || relocation > 0x1ff) |
| 114 | status = bfd_reloc_overflow; |
| 115 | else |
| 116 | status = bfd_reloc_ok; |
| 117 | |
| 118 | x = bfd_get_16 (abfd, data + offset); |
| 119 | relocation >>= howto->rightshift; |
| 120 | relocation <<= howto->bitpos; |
| 121 | x = (x & ~howto->dst_mask) | (((x & howto->src_mask) + relocation) & howto->dst_mask); |
| 122 | bfd_put_16 (abfd, (bfd_vma) x, data + offset); |
| 123 | |
| 124 | return status; |
| 125 | } |
| 126 | |
| 127 | /* Handle the R_M32R_10_PCREL reloc. */ |
| 128 | |
| 129 | static bfd_reloc_status_type |
| 130 | m32r_elf_10_pcrel_reloc (bfd * abfd, |
| 131 | arelent * reloc_entry, |
| 132 | asymbol * symbol, |
| 133 | void * data, |
| 134 | asection * input_section, |
| 135 | bfd * output_bfd, |
| 136 | char ** error_message ATTRIBUTE_UNUSED) |
| 137 | { |
| 138 | /* This part is from bfd_elf_generic_reloc. */ |
| 139 | if (output_bfd != NULL |
| 140 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 141 | && (! reloc_entry->howto->partial_inplace |
| 142 | || reloc_entry->addend == 0)) |
| 143 | { |
| 144 | reloc_entry->address += input_section->output_offset; |
| 145 | return bfd_reloc_ok; |
| 146 | } |
| 147 | |
| 148 | if (output_bfd != NULL) |
| 149 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 150 | return bfd_reloc_continue; |
| 151 | |
| 152 | return m32r_elf_do_10_pcrel_reloc (abfd, reloc_entry->howto, |
| 153 | input_section, |
| 154 | data, reloc_entry->address, |
| 155 | symbol->section, |
| 156 | (symbol->value |
| 157 | + symbol->section->output_section->vma |
| 158 | + symbol->section->output_offset), |
| 159 | reloc_entry->addend); |
| 160 | } |
| 161 | |
| 162 | /* Do generic partial_inplace relocation. |
| 163 | This is a local replacement for bfd_elf_generic_reloc. */ |
| 164 | |
| 165 | static bfd_reloc_status_type |
| 166 | m32r_elf_generic_reloc (bfd *input_bfd, |
| 167 | arelent *reloc_entry, |
| 168 | asymbol *symbol, |
| 169 | void * data, |
| 170 | asection *input_section, |
| 171 | bfd *output_bfd, |
| 172 | char **error_message ATTRIBUTE_UNUSED) |
| 173 | { |
| 174 | bfd_reloc_status_type ret; |
| 175 | bfd_vma relocation; |
| 176 | bfd_byte *inplace_address; |
| 177 | |
| 178 | /* This part is from bfd_elf_generic_reloc. |
| 179 | If we're relocating, and this an external symbol, we don't want |
| 180 | to change anything. */ |
| 181 | if (output_bfd != NULL |
| 182 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 183 | && reloc_entry->addend == 0) |
| 184 | { |
| 185 | reloc_entry->address += input_section->output_offset; |
| 186 | return bfd_reloc_ok; |
| 187 | } |
| 188 | |
| 189 | /* Now do the reloc in the usual way. |
| 190 | ??? It would be nice to call bfd_elf_generic_reloc here, |
| 191 | but we have partial_inplace set. bfd_elf_generic_reloc will |
| 192 | pass the handling back to bfd_install_relocation which will install |
| 193 | a section relative addend which is wrong. */ |
| 194 | |
| 195 | /* Sanity check the address (offset in section). */ |
| 196 | if (reloc_entry->address > bfd_get_section_limit (input_bfd, input_section)) |
| 197 | return bfd_reloc_outofrange; |
| 198 | |
| 199 | ret = bfd_reloc_ok; |
| 200 | if (bfd_is_und_section (symbol->section) |
| 201 | && output_bfd == NULL) |
| 202 | ret = bfd_reloc_undefined; |
| 203 | |
| 204 | if (bfd_is_com_section (symbol->section) |
| 205 | || output_bfd != NULL) |
| 206 | relocation = 0; |
| 207 | else |
| 208 | relocation = symbol->value; |
| 209 | |
| 210 | /* Only do this for a final link. */ |
| 211 | if (output_bfd == NULL) |
| 212 | { |
| 213 | relocation += symbol->section->output_section->vma; |
| 214 | relocation += symbol->section->output_offset; |
| 215 | } |
| 216 | |
| 217 | relocation += reloc_entry->addend; |
| 218 | inplace_address = (bfd_byte *) data + reloc_entry->address; |
| 219 | |
| 220 | #define DOIT(x) \ |
| 221 | x = ( (x & ~reloc_entry->howto->dst_mask) | \ |
| 222 | (((x & reloc_entry->howto->src_mask) + relocation) & \ |
| 223 | reloc_entry->howto->dst_mask)) |
| 224 | |
| 225 | switch (reloc_entry->howto->size) |
| 226 | { |
| 227 | case 1: |
| 228 | { |
| 229 | short x = bfd_get_16 (input_bfd, inplace_address); |
| 230 | DOIT (x); |
| 231 | bfd_put_16 (input_bfd, (bfd_vma) x, inplace_address); |
| 232 | } |
| 233 | break; |
| 234 | case 2: |
| 235 | { |
| 236 | unsigned long x = bfd_get_32 (input_bfd, inplace_address); |
| 237 | DOIT (x); |
| 238 | bfd_put_32 (input_bfd, (bfd_vma)x , inplace_address); |
| 239 | } |
| 240 | break; |
| 241 | default: |
| 242 | BFD_ASSERT (0); |
| 243 | } |
| 244 | |
| 245 | if (output_bfd != NULL) |
| 246 | reloc_entry->address += input_section->output_offset; |
| 247 | |
| 248 | return ret; |
| 249 | } |
| 250 | |
| 251 | /* Handle the R_M32R_SDA16 reloc. |
| 252 | This reloc is used to compute the address of objects in the small data area |
| 253 | and to perform loads and stores from that area. |
| 254 | The lower 16 bits are sign extended and added to the register specified |
| 255 | in the instruction, which is assumed to point to _SDA_BASE_. */ |
| 256 | |
| 257 | static bfd_reloc_status_type |
| 258 | m32r_elf_sda16_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
| 259 | arelent *reloc_entry, |
| 260 | asymbol *symbol, |
| 261 | void * data ATTRIBUTE_UNUSED, |
| 262 | asection *input_section, |
| 263 | bfd *output_bfd, |
| 264 | char **error_message ATTRIBUTE_UNUSED) |
| 265 | { |
| 266 | /* This part is from bfd_elf_generic_reloc. */ |
| 267 | if (output_bfd != NULL |
| 268 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 269 | && (! reloc_entry->howto->partial_inplace |
| 270 | || reloc_entry->addend == 0)) |
| 271 | { |
| 272 | reloc_entry->address += input_section->output_offset; |
| 273 | return bfd_reloc_ok; |
| 274 | } |
| 275 | |
| 276 | if (output_bfd != NULL) |
| 277 | /* FIXME: See bfd_perform_relocation. Is this right? */ |
| 278 | return bfd_reloc_continue; |
| 279 | |
| 280 | /* FIXME: not sure what to do here yet. But then again, the linker |
| 281 | may never call us. */ |
| 282 | abort (); |
| 283 | } |
| 284 | |
| 285 | \f |
| 286 | /* Handle the R_M32R_HI16_[SU]LO relocs. |
| 287 | HI16_SLO is for the add3 and load/store with displacement instructions. |
| 288 | HI16_ULO is for the or3 instruction. |
| 289 | For R_M32R_HI16_SLO, the lower 16 bits are sign extended when added to |
| 290 | the high 16 bytes so if the lower 16 bits are negative (bit 15 == 1) then |
| 291 | we must add one to the high 16 bytes (which will get subtracted off when |
| 292 | the low 16 bits are added). |
| 293 | These relocs have to be done in combination with an R_M32R_LO16 reloc |
| 294 | because there is a carry from the LO16 to the HI16. Here we just save |
| 295 | the information we need; we do the actual relocation when we see the LO16. |
| 296 | This code is copied from the elf32-mips.c. We also support an arbitrary |
| 297 | number of HI16 relocs to be associated with a single LO16 reloc. The |
| 298 | assembler sorts the relocs to ensure each HI16 immediately precedes its |
| 299 | LO16. However if there are multiple copies, the assembler may not find |
| 300 | the real LO16 so it picks the first one it finds. */ |
| 301 | |
| 302 | struct m32r_hi16 |
| 303 | { |
| 304 | struct m32r_hi16 *next; |
| 305 | bfd_byte *addr; |
| 306 | bfd_vma addend; |
| 307 | }; |
| 308 | |
| 309 | /* FIXME: This should not be a static variable. */ |
| 310 | |
| 311 | static struct m32r_hi16 *m32r_hi16_list; |
| 312 | |
| 313 | static bfd_reloc_status_type |
| 314 | m32r_elf_hi16_reloc (bfd *abfd ATTRIBUTE_UNUSED, |
| 315 | arelent *reloc_entry, |
| 316 | asymbol *symbol, |
| 317 | void * data, |
| 318 | asection *input_section, |
| 319 | bfd *output_bfd, |
| 320 | char **error_message ATTRIBUTE_UNUSED) |
| 321 | { |
| 322 | bfd_reloc_status_type ret; |
| 323 | bfd_vma relocation; |
| 324 | struct m32r_hi16 *n; |
| 325 | |
| 326 | /* This part is from bfd_elf_generic_reloc. |
| 327 | If we're relocating, and this an external symbol, we don't want |
| 328 | to change anything. */ |
| 329 | if (output_bfd != NULL |
| 330 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 331 | && reloc_entry->addend == 0) |
| 332 | { |
| 333 | reloc_entry->address += input_section->output_offset; |
| 334 | return bfd_reloc_ok; |
| 335 | } |
| 336 | |
| 337 | /* Sanity check the address (offset in section). */ |
| 338 | if (reloc_entry->address > bfd_get_section_limit (abfd, input_section)) |
| 339 | return bfd_reloc_outofrange; |
| 340 | |
| 341 | ret = bfd_reloc_ok; |
| 342 | if (bfd_is_und_section (symbol->section) |
| 343 | && output_bfd == NULL) |
| 344 | ret = bfd_reloc_undefined; |
| 345 | |
| 346 | if (bfd_is_com_section (symbol->section)) |
| 347 | relocation = 0; |
| 348 | else |
| 349 | relocation = symbol->value; |
| 350 | |
| 351 | relocation += symbol->section->output_section->vma; |
| 352 | relocation += symbol->section->output_offset; |
| 353 | relocation += reloc_entry->addend; |
| 354 | |
| 355 | /* Save the information, and let LO16 do the actual relocation. */ |
| 356 | n = bfd_malloc ((bfd_size_type) sizeof *n); |
| 357 | if (n == NULL) |
| 358 | return bfd_reloc_outofrange; |
| 359 | n->addr = (bfd_byte *) data + reloc_entry->address; |
| 360 | n->addend = relocation; |
| 361 | n->next = m32r_hi16_list; |
| 362 | m32r_hi16_list = n; |
| 363 | |
| 364 | if (output_bfd != NULL) |
| 365 | reloc_entry->address += input_section->output_offset; |
| 366 | |
| 367 | return ret; |
| 368 | } |
| 369 | |
| 370 | /* Handle an M32R ELF HI16 reloc. */ |
| 371 | |
| 372 | static void |
| 373 | m32r_elf_relocate_hi16 (bfd *input_bfd, |
| 374 | int type, |
| 375 | Elf_Internal_Rela *relhi, |
| 376 | Elf_Internal_Rela *rello, |
| 377 | bfd_byte *contents, |
| 378 | bfd_vma addend) |
| 379 | { |
| 380 | unsigned long insn; |
| 381 | bfd_vma addlo; |
| 382 | |
| 383 | insn = bfd_get_32 (input_bfd, contents + relhi->r_offset); |
| 384 | |
| 385 | addlo = bfd_get_32 (input_bfd, contents + rello->r_offset); |
| 386 | if (type == R_M32R_HI16_SLO) |
| 387 | addlo = ((addlo & 0xffff) ^ 0x8000) - 0x8000; |
| 388 | else |
| 389 | addlo &= 0xffff; |
| 390 | |
| 391 | addend += ((insn & 0xffff) << 16) + addlo; |
| 392 | |
| 393 | /* Reaccount for sign extension of low part. */ |
| 394 | if (type == R_M32R_HI16_SLO |
| 395 | && (addend & 0x8000) != 0) |
| 396 | addend += 0x10000; |
| 397 | |
| 398 | bfd_put_32 (input_bfd, |
| 399 | (insn & 0xffff0000) | ((addend >> 16) & 0xffff), |
| 400 | contents + relhi->r_offset); |
| 401 | } |
| 402 | |
| 403 | /* Do an R_M32R_LO16 relocation. This is a straightforward 16 bit |
| 404 | inplace relocation; this function exists in order to do the |
| 405 | R_M32R_HI16_[SU]LO relocation described above. */ |
| 406 | |
| 407 | static bfd_reloc_status_type |
| 408 | m32r_elf_lo16_reloc (bfd *input_bfd, |
| 409 | arelent *reloc_entry, |
| 410 | asymbol *symbol, |
| 411 | void * data, |
| 412 | asection *input_section, |
| 413 | bfd *output_bfd, |
| 414 | char **error_message) |
| 415 | { |
| 416 | /* This part is from bfd_elf_generic_reloc. |
| 417 | If we're relocating, and this an external symbol, we don't want |
| 418 | to change anything. */ |
| 419 | if (output_bfd != NULL |
| 420 | && (symbol->flags & BSF_SECTION_SYM) == 0 |
| 421 | && reloc_entry->addend == 0) |
| 422 | { |
| 423 | reloc_entry->address += input_section->output_offset; |
| 424 | return bfd_reloc_ok; |
| 425 | } |
| 426 | |
| 427 | if (m32r_hi16_list != NULL) |
| 428 | { |
| 429 | struct m32r_hi16 *l; |
| 430 | |
| 431 | l = m32r_hi16_list; |
| 432 | while (l != NULL) |
| 433 | { |
| 434 | unsigned long insn; |
| 435 | unsigned long val; |
| 436 | unsigned long vallo; |
| 437 | struct m32r_hi16 *next; |
| 438 | |
| 439 | /* Do the HI16 relocation. Note that we actually don't need |
| 440 | to know anything about the LO16 itself, except where to |
| 441 | find the low 16 bits of the addend needed by the LO16. */ |
| 442 | insn = bfd_get_32 (input_bfd, l->addr); |
| 443 | vallo = ((bfd_get_32 (input_bfd, (bfd_byte *) data + reloc_entry->address) |
| 444 | & 0xffff) ^ 0x8000) - 0x8000; |
| 445 | val = ((insn & 0xffff) << 16) + vallo; |
| 446 | val += l->addend; |
| 447 | |
| 448 | /* Reaccount for sign extension of low part. */ |
| 449 | if ((val & 0x8000) != 0) |
| 450 | val += 0x10000; |
| 451 | |
| 452 | insn = (insn &~ (bfd_vma) 0xffff) | ((val >> 16) & 0xffff); |
| 453 | bfd_put_32 (input_bfd, (bfd_vma) insn, l->addr); |
| 454 | |
| 455 | next = l->next; |
| 456 | free (l); |
| 457 | l = next; |
| 458 | } |
| 459 | |
| 460 | m32r_hi16_list = NULL; |
| 461 | } |
| 462 | |
| 463 | /* Now do the LO16 reloc in the usual way. |
| 464 | ??? It would be nice to call bfd_elf_generic_reloc here, |
| 465 | but we have partial_inplace set. bfd_elf_generic_reloc will |
| 466 | pass the handling back to bfd_install_relocation which will install |
| 467 | a section relative addend which is wrong. */ |
| 468 | return m32r_elf_generic_reloc (input_bfd, reloc_entry, symbol, data, |
| 469 | input_section, output_bfd, error_message); |
| 470 | } |
| 471 | |
| 472 | \f |
| 473 | static reloc_howto_type m32r_elf_howto_table[] = |
| 474 | { |
| 475 | /* This reloc does nothing. */ |
| 476 | HOWTO (R_M32R_NONE, /* type */ |
| 477 | 0, /* rightshift */ |
| 478 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 479 | 32, /* bitsize */ |
| 480 | FALSE, /* pc_relative */ |
| 481 | 0, /* bitpos */ |
| 482 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 483 | bfd_elf_generic_reloc, /* special_function */ |
| 484 | "R_M32R_NONE", /* name */ |
| 485 | FALSE, /* partial_inplace */ |
| 486 | 0, /* src_mask */ |
| 487 | 0, /* dst_mask */ |
| 488 | FALSE), /* pcrel_offset */ |
| 489 | |
| 490 | /* A 16 bit absolute relocation. */ |
| 491 | HOWTO (R_M32R_16, /* type */ |
| 492 | 0, /* rightshift */ |
| 493 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 494 | 16, /* bitsize */ |
| 495 | FALSE, /* pc_relative */ |
| 496 | 0, /* bitpos */ |
| 497 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 498 | m32r_elf_generic_reloc,/* special_function */ |
| 499 | "R_M32R_16", /* name */ |
| 500 | TRUE, /* partial_inplace */ |
| 501 | 0xffff, /* src_mask */ |
| 502 | 0xffff, /* dst_mask */ |
| 503 | FALSE), /* pcrel_offset */ |
| 504 | |
| 505 | /* A 32 bit absolute relocation. */ |
| 506 | HOWTO (R_M32R_32, /* type */ |
| 507 | 0, /* rightshift */ |
| 508 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 509 | 32, /* bitsize */ |
| 510 | FALSE, /* pc_relative */ |
| 511 | 0, /* bitpos */ |
| 512 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 513 | m32r_elf_generic_reloc,/* special_function */ |
| 514 | "R_M32R_32", /* name */ |
| 515 | TRUE, /* partial_inplace */ |
| 516 | 0xffffffff, /* src_mask */ |
| 517 | 0xffffffff, /* dst_mask */ |
| 518 | FALSE), /* pcrel_offset */ |
| 519 | |
| 520 | /* A 24 bit address. */ |
| 521 | HOWTO (R_M32R_24, /* type */ |
| 522 | 0, /* rightshift */ |
| 523 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 524 | 24, /* bitsize */ |
| 525 | FALSE, /* pc_relative */ |
| 526 | 0, /* bitpos */ |
| 527 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 528 | m32r_elf_generic_reloc,/* special_function */ |
| 529 | "R_M32R_24", /* name */ |
| 530 | TRUE, /* partial_inplace */ |
| 531 | 0xffffff, /* src_mask */ |
| 532 | 0xffffff, /* dst_mask */ |
| 533 | FALSE), /* pcrel_offset */ |
| 534 | |
| 535 | /* An PC Relative 10-bit relocation, shifted by 2. |
| 536 | This reloc is complicated because relocations are relative to pc & -4. |
| 537 | i.e. branches in the right insn slot use the address of the left insn |
| 538 | slot for pc. */ |
| 539 | /* ??? It's not clear whether this should have partial_inplace set or not. |
| 540 | Branch relaxing in the assembler can store the addend in the insn, |
| 541 | and if bfd_install_relocation gets called the addend may get added |
| 542 | again. */ |
| 543 | HOWTO (R_M32R_10_PCREL, /* type */ |
| 544 | 2, /* rightshift */ |
| 545 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 546 | 10, /* bitsize */ |
| 547 | TRUE, /* pc_relative */ |
| 548 | 0, /* bitpos */ |
| 549 | complain_overflow_signed, /* complain_on_overflow */ |
| 550 | m32r_elf_10_pcrel_reloc, /* special_function */ |
| 551 | "R_M32R_10_PCREL", /* name */ |
| 552 | FALSE, /* partial_inplace */ |
| 553 | 0xff, /* src_mask */ |
| 554 | 0xff, /* dst_mask */ |
| 555 | TRUE), /* pcrel_offset */ |
| 556 | |
| 557 | /* A relative 18 bit relocation, right shifted by 2. */ |
| 558 | HOWTO (R_M32R_18_PCREL, /* type */ |
| 559 | 2, /* rightshift */ |
| 560 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 561 | 16, /* bitsize */ |
| 562 | TRUE, /* pc_relative */ |
| 563 | 0, /* bitpos */ |
| 564 | complain_overflow_signed, /* complain_on_overflow */ |
| 565 | bfd_elf_generic_reloc, /* special_function */ |
| 566 | "R_M32R_18_PCREL", /* name */ |
| 567 | FALSE, /* partial_inplace */ |
| 568 | 0xffff, /* src_mask */ |
| 569 | 0xffff, /* dst_mask */ |
| 570 | TRUE), /* pcrel_offset */ |
| 571 | |
| 572 | /* A relative 26 bit relocation, right shifted by 2. */ |
| 573 | /* ??? It's not clear whether this should have partial_inplace set or not. |
| 574 | Branch relaxing in the assembler can store the addend in the insn, |
| 575 | and if bfd_install_relocation gets called the addend may get added |
| 576 | again. */ |
| 577 | HOWTO (R_M32R_26_PCREL, /* type */ |
| 578 | 2, /* rightshift */ |
| 579 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 580 | 26, /* bitsize */ |
| 581 | TRUE, /* pc_relative */ |
| 582 | 0, /* bitpos */ |
| 583 | complain_overflow_signed, /* complain_on_overflow */ |
| 584 | bfd_elf_generic_reloc, /* special_function */ |
| 585 | "R_M32R_26_PCREL", /* name */ |
| 586 | FALSE, /* partial_inplace */ |
| 587 | 0xffffff, /* src_mask */ |
| 588 | 0xffffff, /* dst_mask */ |
| 589 | TRUE), /* pcrel_offset */ |
| 590 | |
| 591 | /* High 16 bits of address when lower 16 is or'd in. */ |
| 592 | HOWTO (R_M32R_HI16_ULO, /* type */ |
| 593 | 16, /* rightshift */ |
| 594 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 595 | 16, /* bitsize */ |
| 596 | FALSE, /* pc_relative */ |
| 597 | 0, /* bitpos */ |
| 598 | complain_overflow_dont, /* complain_on_overflow */ |
| 599 | m32r_elf_hi16_reloc, /* special_function */ |
| 600 | "R_M32R_HI16_ULO", /* name */ |
| 601 | TRUE, /* partial_inplace */ |
| 602 | 0x0000ffff, /* src_mask */ |
| 603 | 0x0000ffff, /* dst_mask */ |
| 604 | FALSE), /* pcrel_offset */ |
| 605 | |
| 606 | /* High 16 bits of address when lower 16 is added in. */ |
| 607 | HOWTO (R_M32R_HI16_SLO, /* type */ |
| 608 | 16, /* rightshift */ |
| 609 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 610 | 16, /* bitsize */ |
| 611 | FALSE, /* pc_relative */ |
| 612 | 0, /* bitpos */ |
| 613 | complain_overflow_dont, /* complain_on_overflow */ |
| 614 | m32r_elf_hi16_reloc, /* special_function */ |
| 615 | "R_M32R_HI16_SLO", /* name */ |
| 616 | TRUE, /* partial_inplace */ |
| 617 | 0x0000ffff, /* src_mask */ |
| 618 | 0x0000ffff, /* dst_mask */ |
| 619 | FALSE), /* pcrel_offset */ |
| 620 | |
| 621 | /* Lower 16 bits of address. */ |
| 622 | HOWTO (R_M32R_LO16, /* type */ |
| 623 | 0, /* rightshift */ |
| 624 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 625 | 16, /* bitsize */ |
| 626 | FALSE, /* pc_relative */ |
| 627 | 0, /* bitpos */ |
| 628 | complain_overflow_dont, /* complain_on_overflow */ |
| 629 | m32r_elf_lo16_reloc, /* special_function */ |
| 630 | "R_M32R_LO16", /* name */ |
| 631 | TRUE, /* partial_inplace */ |
| 632 | 0x0000ffff, /* src_mask */ |
| 633 | 0x0000ffff, /* dst_mask */ |
| 634 | FALSE), /* pcrel_offset */ |
| 635 | |
| 636 | /* Small data area 16 bits offset. */ |
| 637 | HOWTO (R_M32R_SDA16, /* type */ |
| 638 | 0, /* rightshift */ |
| 639 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 640 | 16, /* bitsize */ |
| 641 | FALSE, /* pc_relative */ |
| 642 | 0, /* bitpos */ |
| 643 | complain_overflow_signed, /* complain_on_overflow */ |
| 644 | m32r_elf_sda16_reloc, /* special_function */ |
| 645 | "R_M32R_SDA16", /* name */ |
| 646 | TRUE, /* partial_inplace */ /* FIXME: correct? */ |
| 647 | 0x0000ffff, /* src_mask */ |
| 648 | 0x0000ffff, /* dst_mask */ |
| 649 | FALSE), /* pcrel_offset */ |
| 650 | |
| 651 | /* GNU extension to record C++ vtable hierarchy. */ |
| 652 | HOWTO (R_M32R_GNU_VTINHERIT, /* type */ |
| 653 | 0, /* rightshift */ |
| 654 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 655 | 0, /* bitsize */ |
| 656 | FALSE, /* pc_relative */ |
| 657 | 0, /* bitpos */ |
| 658 | complain_overflow_dont, /* complain_on_overflow */ |
| 659 | NULL, /* special_function */ |
| 660 | "R_M32R_GNU_VTINHERIT", /* name */ |
| 661 | FALSE, /* partial_inplace */ |
| 662 | 0, /* src_mask */ |
| 663 | 0, /* dst_mask */ |
| 664 | FALSE), /* pcrel_offset */ |
| 665 | |
| 666 | /* GNU extension to record C++ vtable member usage. */ |
| 667 | HOWTO (R_M32R_GNU_VTENTRY, /* type */ |
| 668 | 0, /* rightshift */ |
| 669 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 670 | 0, /* bitsize */ |
| 671 | FALSE, /* pc_relative */ |
| 672 | 0, /* bitpos */ |
| 673 | complain_overflow_dont, /* complain_on_overflow */ |
| 674 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 675 | "R_M32R_GNU_VTENTRY", /* name */ |
| 676 | FALSE, /* partial_inplace */ |
| 677 | 0, /* src_mask */ |
| 678 | 0, /* dst_mask */ |
| 679 | FALSE), /* pcrel_offset */ |
| 680 | |
| 681 | EMPTY_HOWTO (13), |
| 682 | EMPTY_HOWTO (14), |
| 683 | EMPTY_HOWTO (15), |
| 684 | EMPTY_HOWTO (16), |
| 685 | EMPTY_HOWTO (17), |
| 686 | EMPTY_HOWTO (18), |
| 687 | EMPTY_HOWTO (19), |
| 688 | EMPTY_HOWTO (20), |
| 689 | EMPTY_HOWTO (21), |
| 690 | EMPTY_HOWTO (22), |
| 691 | EMPTY_HOWTO (23), |
| 692 | EMPTY_HOWTO (24), |
| 693 | EMPTY_HOWTO (25), |
| 694 | EMPTY_HOWTO (26), |
| 695 | EMPTY_HOWTO (27), |
| 696 | EMPTY_HOWTO (28), |
| 697 | EMPTY_HOWTO (29), |
| 698 | EMPTY_HOWTO (30), |
| 699 | EMPTY_HOWTO (31), |
| 700 | EMPTY_HOWTO (32), |
| 701 | |
| 702 | /* A 16 bit absolute relocation. */ |
| 703 | HOWTO (R_M32R_16_RELA, /* type */ |
| 704 | 0, /* rightshift */ |
| 705 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 706 | 16, /* bitsize */ |
| 707 | FALSE, /* pc_relative */ |
| 708 | 0, /* bitpos */ |
| 709 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 710 | bfd_elf_generic_reloc, /* special_function */ |
| 711 | "R_M32R_16_RELA", /* name */ |
| 712 | FALSE, /* partial_inplace */ |
| 713 | 0xffff, /* src_mask */ |
| 714 | 0xffff, /* dst_mask */ |
| 715 | FALSE), /* pcrel_offset */ |
| 716 | |
| 717 | /* A 32 bit absolute relocation. */ |
| 718 | HOWTO (R_M32R_32_RELA, /* type */ |
| 719 | 0, /* rightshift */ |
| 720 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 721 | 32, /* bitsize */ |
| 722 | FALSE, /* pc_relative */ |
| 723 | 0, /* bitpos */ |
| 724 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 725 | bfd_elf_generic_reloc,/* special_function */ |
| 726 | "R_M32R_32_RELA", /* name */ |
| 727 | FALSE, /* partial_inplace */ |
| 728 | 0xffffffff, /* src_mask */ |
| 729 | 0xffffffff, /* dst_mask */ |
| 730 | FALSE), /* pcrel_offset */ |
| 731 | |
| 732 | /* A 24 bit address. */ |
| 733 | HOWTO (R_M32R_24_RELA, /* type */ |
| 734 | 0, /* rightshift */ |
| 735 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 736 | 24, /* bitsize */ |
| 737 | FALSE, /* pc_relative */ |
| 738 | 0, /* bitpos */ |
| 739 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 740 | bfd_elf_generic_reloc,/* special_function */ |
| 741 | "R_M32R_24_RELA", /* name */ |
| 742 | FALSE, /* partial_inplace */ |
| 743 | 0xffffff, /* src_mask */ |
| 744 | 0xffffff, /* dst_mask */ |
| 745 | FALSE), /* pcrel_offset */ |
| 746 | |
| 747 | HOWTO (R_M32R_10_PCREL_RELA, /* type */ |
| 748 | 2, /* rightshift */ |
| 749 | 1, /* size (0 = byte, 1 = short, 2 = long) */ |
| 750 | 10, /* bitsize */ |
| 751 | TRUE, /* pc_relative */ |
| 752 | 0, /* bitpos */ |
| 753 | complain_overflow_signed, /* complain_on_overflow */ |
| 754 | m32r_elf_10_pcrel_reloc, /* special_function */ |
| 755 | "R_M32R_10_PCREL_RELA",/* name */ |
| 756 | FALSE, /* partial_inplace */ |
| 757 | 0xff, /* src_mask */ |
| 758 | 0xff, /* dst_mask */ |
| 759 | TRUE), /* pcrel_offset */ |
| 760 | |
| 761 | /* A relative 18 bit relocation, right shifted by 2. */ |
| 762 | HOWTO (R_M32R_18_PCREL_RELA, /* type */ |
| 763 | 2, /* rightshift */ |
| 764 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 765 | 16, /* bitsize */ |
| 766 | TRUE, /* pc_relative */ |
| 767 | 0, /* bitpos */ |
| 768 | complain_overflow_signed, /* complain_on_overflow */ |
| 769 | bfd_elf_generic_reloc, /* special_function */ |
| 770 | "R_M32R_18_PCREL_RELA",/* name */ |
| 771 | FALSE, /* partial_inplace */ |
| 772 | 0xffff, /* src_mask */ |
| 773 | 0xffff, /* dst_mask */ |
| 774 | TRUE), /* pcrel_offset */ |
| 775 | |
| 776 | /* A relative 26 bit relocation, right shifted by 2. */ |
| 777 | HOWTO (R_M32R_26_PCREL_RELA, /* type */ |
| 778 | 2, /* rightshift */ |
| 779 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 780 | 26, /* bitsize */ |
| 781 | TRUE, /* pc_relative */ |
| 782 | 0, /* bitpos */ |
| 783 | complain_overflow_signed, /* complain_on_overflow */ |
| 784 | bfd_elf_generic_reloc, /* special_function */ |
| 785 | "R_M32R_26_PCREL_RELA",/* name */ |
| 786 | FALSE, /* partial_inplace */ |
| 787 | 0xffffff, /* src_mask */ |
| 788 | 0xffffff, /* dst_mask */ |
| 789 | TRUE), /* pcrel_offset */ |
| 790 | |
| 791 | /* High 16 bits of address when lower 16 is or'd in. */ |
| 792 | HOWTO (R_M32R_HI16_ULO_RELA, /* type */ |
| 793 | 16, /* rightshift */ |
| 794 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 795 | 16, /* bitsize */ |
| 796 | FALSE, /* pc_relative */ |
| 797 | 0, /* bitpos */ |
| 798 | complain_overflow_dont, /* complain_on_overflow */ |
| 799 | bfd_elf_generic_reloc, /* special_function */ |
| 800 | "R_M32R_HI16_ULO_RELA",/* name */ |
| 801 | FALSE, /* partial_inplace */ |
| 802 | 0x0000ffff, /* src_mask */ |
| 803 | 0x0000ffff, /* dst_mask */ |
| 804 | FALSE), /* pcrel_offset */ |
| 805 | |
| 806 | /* High 16 bits of address when lower 16 is added in. */ |
| 807 | HOWTO (R_M32R_HI16_SLO_RELA, /* type */ |
| 808 | 16, /* rightshift */ |
| 809 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 810 | 16, /* bitsize */ |
| 811 | FALSE, /* pc_relative */ |
| 812 | 0, /* bitpos */ |
| 813 | complain_overflow_dont, /* complain_on_overflow */ |
| 814 | bfd_elf_generic_reloc, /* special_function */ |
| 815 | "R_M32R_HI16_SLO_RELA",/* name */ |
| 816 | FALSE, /* partial_inplace */ |
| 817 | 0x0000ffff, /* src_mask */ |
| 818 | 0x0000ffff, /* dst_mask */ |
| 819 | FALSE), /* pcrel_offset */ |
| 820 | |
| 821 | /* Lower 16 bits of address. */ |
| 822 | HOWTO (R_M32R_LO16_RELA, /* type */ |
| 823 | 0, /* rightshift */ |
| 824 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 825 | 16, /* bitsize */ |
| 826 | FALSE, /* pc_relative */ |
| 827 | 0, /* bitpos */ |
| 828 | complain_overflow_dont, /* complain_on_overflow */ |
| 829 | bfd_elf_generic_reloc, /* special_function */ |
| 830 | "R_M32R_LO16_RELA", /* name */ |
| 831 | FALSE, /* partial_inplace */ |
| 832 | 0x0000ffff, /* src_mask */ |
| 833 | 0x0000ffff, /* dst_mask */ |
| 834 | FALSE), /* pcrel_offset */ |
| 835 | |
| 836 | /* Small data area 16 bits offset. */ |
| 837 | HOWTO (R_M32R_SDA16_RELA, /* type */ |
| 838 | 0, /* rightshift */ |
| 839 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 840 | 16, /* bitsize */ |
| 841 | FALSE, /* pc_relative */ |
| 842 | 0, /* bitpos */ |
| 843 | complain_overflow_signed, /* complain_on_overflow */ |
| 844 | bfd_elf_generic_reloc, /* special_function */ |
| 845 | "R_M32R_SDA16_RELA", /* name */ |
| 846 | TRUE, /* partial_inplace */ /* FIXME: correct? */ |
| 847 | 0x0000ffff, /* src_mask */ |
| 848 | 0x0000ffff, /* dst_mask */ |
| 849 | FALSE), /* pcrel_offset */ |
| 850 | |
| 851 | /* GNU extension to record C++ vtable hierarchy. */ |
| 852 | HOWTO (R_M32R_RELA_GNU_VTINHERIT, /* type */ |
| 853 | 0, /* rightshift */ |
| 854 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 855 | 0, /* bitsize */ |
| 856 | FALSE, /* pc_relative */ |
| 857 | 0, /* bitpos */ |
| 858 | complain_overflow_dont, /* complain_on_overflow */ |
| 859 | NULL, /* special_function */ |
| 860 | "R_M32R_RELA_GNU_VTINHERIT", /* name */ |
| 861 | FALSE, /* partial_inplace */ |
| 862 | 0, /* src_mask */ |
| 863 | 0, /* dst_mask */ |
| 864 | FALSE), /* pcrel_offset */ |
| 865 | |
| 866 | /* GNU extension to record C++ vtable member usage. */ |
| 867 | HOWTO (R_M32R_RELA_GNU_VTENTRY, /* type */ |
| 868 | 0, /* rightshift */ |
| 869 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 870 | 0, /* bitsize */ |
| 871 | FALSE, /* pc_relative */ |
| 872 | 0, /* bitpos */ |
| 873 | complain_overflow_dont, /* complain_on_overflow */ |
| 874 | _bfd_elf_rel_vtable_reloc_fn, /* special_function */ |
| 875 | "R_M32R_RELA_GNU_VTENTRY", /* name */ |
| 876 | FALSE, /* partial_inplace */ |
| 877 | 0, /* src_mask */ |
| 878 | 0, /* dst_mask */ |
| 879 | FALSE), /* pcrel_offset */ |
| 880 | |
| 881 | /* A 32 bit PC relative relocation. */ |
| 882 | HOWTO (R_M32R_REL32, /* type */ |
| 883 | 0, /* rightshift */ |
| 884 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 885 | 32, /* bitsize */ |
| 886 | TRUE, /* pc_relative */ |
| 887 | 0, /* bitpos */ |
| 888 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 889 | bfd_elf_generic_reloc,/* special_function */ |
| 890 | "R_M32R_REL32", /* name */ |
| 891 | FALSE, /* partial_inplace */ |
| 892 | 0xffffffff, /* src_mask */ |
| 893 | 0xffffffff, /* dst_mask */ |
| 894 | TRUE), /* pcrel_offset */ |
| 895 | |
| 896 | EMPTY_HOWTO (46), |
| 897 | EMPTY_HOWTO (47), |
| 898 | |
| 899 | /* Like R_M32R_24, but referring to the GOT table entry for |
| 900 | the symbol. */ |
| 901 | HOWTO (R_M32R_GOT24, /* type */ |
| 902 | 0, /* rightshift */ |
| 903 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 904 | 24, /* bitsize */ |
| 905 | FALSE, /* pc_relative */ |
| 906 | 0, /* bitpos */ |
| 907 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 908 | bfd_elf_generic_reloc, /* special_function */ |
| 909 | "R_M32R_GOT24", /* name */ |
| 910 | FALSE, /* partial_inplace */ |
| 911 | 0xffffff, /* src_mask */ |
| 912 | 0xffffff, /* dst_mask */ |
| 913 | FALSE), /* pcrel_offset */ |
| 914 | |
| 915 | /* Like R_M32R_PCREL, but referring to the procedure linkage table |
| 916 | entry for the symbol. */ |
| 917 | HOWTO (R_M32R_26_PLTREL, /* type */ |
| 918 | 2, /* rightshift */ |
| 919 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 920 | 24, /* bitsize */ |
| 921 | TRUE, /* pc_relative */ |
| 922 | 0, /* bitpos */ |
| 923 | complain_overflow_signed, /* complain_on_overflow */ |
| 924 | bfd_elf_generic_reloc, /* special_function */ |
| 925 | "R_M32R_26_PLTREL", /* name */ |
| 926 | FALSE, /* partial_inplace */ |
| 927 | 0xffffff, /* src_mask */ |
| 928 | 0xffffff, /* dst_mask */ |
| 929 | TRUE), /* pcrel_offset */ |
| 930 | |
| 931 | /* This is used only by the dynamic linker. The symbol should exist |
| 932 | both in the object being run and in some shared library. The |
| 933 | dynamic linker copies the data addressed by the symbol from the |
| 934 | shared library into the object, because the object being |
| 935 | run has to have the data at some particular address. */ |
| 936 | HOWTO (R_M32R_COPY, /* type */ |
| 937 | 0, /* rightshift */ |
| 938 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 939 | 32, /* bitsize */ |
| 940 | FALSE, /* pc_relative */ |
| 941 | 0, /* bitpos */ |
| 942 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 943 | bfd_elf_generic_reloc, /* special_function */ |
| 944 | "R_M32R_COPY", /* name */ |
| 945 | FALSE, /* partial_inplace */ |
| 946 | 0xffffffff, /* src_mask */ |
| 947 | 0xffffffff, /* dst_mask */ |
| 948 | FALSE), /* pcrel_offset */ |
| 949 | |
| 950 | /* Like R_M32R_24, but used when setting global offset table |
| 951 | entries. */ |
| 952 | HOWTO (R_M32R_GLOB_DAT, /* type */ |
| 953 | 0, /* rightshift */ |
| 954 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 955 | 32, /* bitsize */ |
| 956 | FALSE, /* pc_relative */ |
| 957 | 0, /* bitpos */ |
| 958 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 959 | bfd_elf_generic_reloc, /* special_function */ |
| 960 | "R_M32R_GLOB_DAT", /* name */ |
| 961 | FALSE, /* partial_inplace */ |
| 962 | 0xffffffff, /* src_mask */ |
| 963 | 0xffffffff, /* dst_mask */ |
| 964 | FALSE), /* pcrel_offset */ |
| 965 | |
| 966 | /* Marks a procedure linkage table entry for a symbol. */ |
| 967 | HOWTO (R_M32R_JMP_SLOT, /* type */ |
| 968 | 0, /* rightshift */ |
| 969 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 970 | 32, /* bitsize */ |
| 971 | FALSE, /* pc_relative */ |
| 972 | 0, /* bitpos */ |
| 973 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 974 | bfd_elf_generic_reloc, /* special_function */ |
| 975 | "R_M32R_JMP_SLOT", /* name */ |
| 976 | FALSE, /* partial_inplace */ |
| 977 | 0xffffffff, /* src_mask */ |
| 978 | 0xffffffff, /* dst_mask */ |
| 979 | FALSE), /* pcrel_offset */ |
| 980 | |
| 981 | /* Used only by the dynamic linker. When the object is run, this |
| 982 | longword is set to the load address of the object, plus the |
| 983 | addend. */ |
| 984 | HOWTO (R_M32R_RELATIVE, /* type */ |
| 985 | 0, /* rightshift */ |
| 986 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 987 | 32, /* bitsize */ |
| 988 | FALSE, /* pc_relative */ |
| 989 | 0, /* bitpos */ |
| 990 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 991 | bfd_elf_generic_reloc, /* special_function */ |
| 992 | "R_M32R_RELATIVE", /* name */ |
| 993 | FALSE, /* partial_inplace */ |
| 994 | 0xffffffff, /* src_mask */ |
| 995 | 0xffffffff, /* dst_mask */ |
| 996 | FALSE), /* pcrel_offset */ |
| 997 | |
| 998 | HOWTO (R_M32R_GOTOFF, /* type */ |
| 999 | 0, /* rightshift */ |
| 1000 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1001 | 24, /* bitsize */ |
| 1002 | FALSE, /* pc_relative */ |
| 1003 | 0, /* bitpos */ |
| 1004 | complain_overflow_bitfield, /* complain_on_overflow */ |
| 1005 | bfd_elf_generic_reloc, /* special_function */ |
| 1006 | "R_M32R_GOTOFF", /* name */ |
| 1007 | FALSE, /* partial_inplace */ |
| 1008 | 0xffffff, /* src_mask */ |
| 1009 | 0xffffff, /* dst_mask */ |
| 1010 | FALSE), /* pcrel_offset */ |
| 1011 | |
| 1012 | /* An PC Relative 24-bit relocation used when setting PIC offset |
| 1013 | table register. */ |
| 1014 | HOWTO (R_M32R_GOTPC24, /* type */ |
| 1015 | 0, /* rightshift */ |
| 1016 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1017 | 24, /* bitsize */ |
| 1018 | TRUE, /* pc_relative */ |
| 1019 | 0, /* bitpos */ |
| 1020 | complain_overflow_unsigned, /* complain_on_overflow */ |
| 1021 | bfd_elf_generic_reloc, /* special_function */ |
| 1022 | "R_M32R_GOTPC24", /* name */ |
| 1023 | FALSE, /* partial_inplace */ |
| 1024 | 0xffffff, /* src_mask */ |
| 1025 | 0xffffff, /* dst_mask */ |
| 1026 | TRUE), /* pcrel_offset */ |
| 1027 | |
| 1028 | /* Like R_M32R_HI16_ULO, but referring to the GOT table entry for |
| 1029 | the symbol. */ |
| 1030 | HOWTO (R_M32R_GOT16_HI_ULO, /* type */ |
| 1031 | 16, /* rightshift */ |
| 1032 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1033 | 16, /* bitsize */ |
| 1034 | FALSE, /* pc_relative */ |
| 1035 | 0, /* bitpos */ |
| 1036 | complain_overflow_dont, /* complain_on_overflow */ |
| 1037 | bfd_elf_generic_reloc, /* special_function */ |
| 1038 | "R_M32R_GOT16_HI_ULO", /* name */ |
| 1039 | FALSE, /* partial_inplace */ |
| 1040 | 0x0000ffff, /* src_mask */ |
| 1041 | 0x0000ffff, /* dst_mask */ |
| 1042 | FALSE), /* pcrel_offset */ |
| 1043 | |
| 1044 | /* Like R_M32R_HI16_SLO, but referring to the GOT table entry for |
| 1045 | the symbol. */ |
| 1046 | HOWTO (R_M32R_GOT16_HI_SLO, /* type */ |
| 1047 | 16, /* rightshift */ |
| 1048 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1049 | 16, /* bitsize */ |
| 1050 | FALSE, /* pc_relative */ |
| 1051 | 0, /* bitpos */ |
| 1052 | complain_overflow_dont, /* complain_on_overflow */ |
| 1053 | bfd_elf_generic_reloc, /* special_function */ |
| 1054 | "R_M32R_GOT16_HI_SLO", /* name */ |
| 1055 | FALSE, /* partial_inplace */ |
| 1056 | 0x0000ffff, /* src_mask */ |
| 1057 | 0x0000ffff, /* dst_mask */ |
| 1058 | FALSE), /* pcrel_offset */ |
| 1059 | |
| 1060 | /* Like R_M32R_LO16, but referring to the GOT table entry for |
| 1061 | the symbol. */ |
| 1062 | HOWTO (R_M32R_GOT16_LO, /* type */ |
| 1063 | 0, /* rightshift */ |
| 1064 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1065 | 16, /* bitsize */ |
| 1066 | FALSE, /* pc_relative */ |
| 1067 | 0, /* bitpos */ |
| 1068 | complain_overflow_dont, /* complain_on_overflow */ |
| 1069 | bfd_elf_generic_reloc, /* special_function */ |
| 1070 | "R_M32R_GOT16_LO", /* name */ |
| 1071 | FALSE, /* partial_inplace */ |
| 1072 | 0x0000ffff, /* src_mask */ |
| 1073 | 0x0000ffff, /* dst_mask */ |
| 1074 | FALSE), /* pcrel_offset */ |
| 1075 | |
| 1076 | /* An PC Relative relocation used when setting PIC offset table register. |
| 1077 | Like R_M32R_HI16_ULO, but referring to the GOT table entry for |
| 1078 | the symbol. */ |
| 1079 | HOWTO (R_M32R_GOTPC_HI_ULO, /* type */ |
| 1080 | 16, /* rightshift */ |
| 1081 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1082 | 16, /* bitsize */ |
| 1083 | FALSE, /* pc_relative */ |
| 1084 | 0, /* bitpos */ |
| 1085 | complain_overflow_dont, /* complain_on_overflow */ |
| 1086 | bfd_elf_generic_reloc, /* special_function */ |
| 1087 | "R_M32R_GOTPC_HI_ULO", /* name */ |
| 1088 | FALSE, /* partial_inplace */ |
| 1089 | 0x0000ffff, /* src_mask */ |
| 1090 | 0x0000ffff, /* dst_mask */ |
| 1091 | TRUE), /* pcrel_offset */ |
| 1092 | |
| 1093 | /* An PC Relative relocation used when setting PIC offset table register. |
| 1094 | Like R_M32R_HI16_SLO, but referring to the GOT table entry for |
| 1095 | the symbol. */ |
| 1096 | HOWTO (R_M32R_GOTPC_HI_SLO, /* type */ |
| 1097 | 16, /* rightshift */ |
| 1098 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1099 | 16, /* bitsize */ |
| 1100 | FALSE, /* pc_relative */ |
| 1101 | 0, /* bitpos */ |
| 1102 | complain_overflow_dont, /* complain_on_overflow */ |
| 1103 | bfd_elf_generic_reloc, /* special_function */ |
| 1104 | "R_M32R_GOTPC_HI_SLO", /* name */ |
| 1105 | FALSE, /* partial_inplace */ |
| 1106 | 0x0000ffff, /* src_mask */ |
| 1107 | 0x0000ffff, /* dst_mask */ |
| 1108 | TRUE), /* pcrel_offset */ |
| 1109 | |
| 1110 | /* An PC Relative relocation used when setting PIC offset table register. |
| 1111 | Like R_M32R_LO16, but referring to the GOT table entry for |
| 1112 | the symbol. */ |
| 1113 | HOWTO (R_M32R_GOTPC_LO, /* type */ |
| 1114 | 0, /* rightshift */ |
| 1115 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1116 | 16, /* bitsize */ |
| 1117 | FALSE, /* pc_relative */ |
| 1118 | 0, /* bitpos */ |
| 1119 | complain_overflow_dont, /* complain_on_overflow */ |
| 1120 | bfd_elf_generic_reloc, /* special_function */ |
| 1121 | "R_M32R_GOTPC_LO", /* name */ |
| 1122 | FALSE, /* partial_inplace */ |
| 1123 | 0x0000ffff, /* src_mask */ |
| 1124 | 0x0000ffff, /* dst_mask */ |
| 1125 | TRUE), /* pcrel_offset */ |
| 1126 | |
| 1127 | HOWTO (R_M32R_GOTOFF_HI_ULO, /* type */ |
| 1128 | 16, /* rightshift */ |
| 1129 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1130 | 16, /* bitsize */ |
| 1131 | FALSE, /* pc_relative */ |
| 1132 | 0, /* bitpos */ |
| 1133 | complain_overflow_dont, /* complain_on_overflow */ |
| 1134 | bfd_elf_generic_reloc, /* special_function */ |
| 1135 | "R_M32R_GOTOFF_HI_ULO",/* name */ |
| 1136 | FALSE, /* partial_inplace */ |
| 1137 | 0x0000ffff, /* src_mask */ |
| 1138 | 0x0000ffff, /* dst_mask */ |
| 1139 | FALSE), /* pcrel_offset */ |
| 1140 | |
| 1141 | HOWTO (R_M32R_GOTOFF_HI_SLO, /* type */ |
| 1142 | 16, /* rightshift */ |
| 1143 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1144 | 16, /* bitsize */ |
| 1145 | FALSE, /* pc_relative */ |
| 1146 | 0, /* bitpos */ |
| 1147 | complain_overflow_dont, /* complain_on_overflow */ |
| 1148 | bfd_elf_generic_reloc, /* special_function */ |
| 1149 | "R_M32R_GOTOFF_HI_SLO",/* name */ |
| 1150 | FALSE, /* partial_inplace */ |
| 1151 | 0x0000ffff, /* src_mask */ |
| 1152 | 0x0000ffff, /* dst_mask */ |
| 1153 | FALSE), /* pcrel_offset */ |
| 1154 | |
| 1155 | HOWTO (R_M32R_GOTOFF_LO, /* type */ |
| 1156 | 0, /* rightshift */ |
| 1157 | 2, /* size (0 = byte, 1 = short, 2 = long) */ |
| 1158 | 16, /* bitsize */ |
| 1159 | FALSE, /* pc_relative */ |
| 1160 | 0, /* bitpos */ |
| 1161 | complain_overflow_dont, /* complain_on_overflow */ |
| 1162 | bfd_elf_generic_reloc, /* special_function */ |
| 1163 | "R_M32R_GOTOFF_LO", /* name */ |
| 1164 | FALSE, /* partial_inplace */ |
| 1165 | 0x0000ffff, /* src_mask */ |
| 1166 | 0x0000ffff, /* dst_mask */ |
| 1167 | FALSE), /* pcrel_offset */ |
| 1168 | }; |
| 1169 | |
| 1170 | /* Map BFD reloc types to M32R ELF reloc types. */ |
| 1171 | |
| 1172 | struct m32r_reloc_map |
| 1173 | { |
| 1174 | bfd_reloc_code_real_type bfd_reloc_val; |
| 1175 | unsigned char elf_reloc_val; |
| 1176 | }; |
| 1177 | |
| 1178 | #ifdef USE_M32R_OLD_RELOC |
| 1179 | static const struct m32r_reloc_map m32r_reloc_map_old[] = |
| 1180 | { |
| 1181 | { BFD_RELOC_NONE, R_M32R_NONE }, |
| 1182 | { BFD_RELOC_16, R_M32R_16 }, |
| 1183 | { BFD_RELOC_32, R_M32R_32 }, |
| 1184 | { BFD_RELOC_M32R_24, R_M32R_24 }, |
| 1185 | { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL }, |
| 1186 | { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL }, |
| 1187 | { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL }, |
| 1188 | { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO }, |
| 1189 | { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO }, |
| 1190 | { BFD_RELOC_M32R_LO16, R_M32R_LO16 }, |
| 1191 | { BFD_RELOC_M32R_SDA16, R_M32R_SDA16 }, |
| 1192 | { BFD_RELOC_VTABLE_INHERIT, R_M32R_GNU_VTINHERIT }, |
| 1193 | { BFD_RELOC_VTABLE_ENTRY, R_M32R_GNU_VTENTRY }, |
| 1194 | }; |
| 1195 | #else |
| 1196 | static const struct m32r_reloc_map m32r_reloc_map[] = |
| 1197 | { |
| 1198 | { BFD_RELOC_NONE, R_M32R_NONE }, |
| 1199 | { BFD_RELOC_16, R_M32R_16_RELA }, |
| 1200 | { BFD_RELOC_32, R_M32R_32_RELA }, |
| 1201 | { BFD_RELOC_M32R_24, R_M32R_24_RELA }, |
| 1202 | { BFD_RELOC_M32R_10_PCREL, R_M32R_10_PCREL_RELA }, |
| 1203 | { BFD_RELOC_M32R_18_PCREL, R_M32R_18_PCREL_RELA }, |
| 1204 | { BFD_RELOC_M32R_26_PCREL, R_M32R_26_PCREL_RELA }, |
| 1205 | { BFD_RELOC_M32R_HI16_ULO, R_M32R_HI16_ULO_RELA }, |
| 1206 | { BFD_RELOC_M32R_HI16_SLO, R_M32R_HI16_SLO_RELA }, |
| 1207 | { BFD_RELOC_M32R_LO16, R_M32R_LO16_RELA }, |
| 1208 | { BFD_RELOC_M32R_SDA16, R_M32R_SDA16_RELA }, |
| 1209 | { BFD_RELOC_VTABLE_INHERIT, R_M32R_RELA_GNU_VTINHERIT }, |
| 1210 | { BFD_RELOC_VTABLE_ENTRY, R_M32R_RELA_GNU_VTENTRY }, |
| 1211 | { BFD_RELOC_32_PCREL, R_M32R_REL32 }, |
| 1212 | |
| 1213 | { BFD_RELOC_M32R_GOT24, R_M32R_GOT24 }, |
| 1214 | { BFD_RELOC_M32R_26_PLTREL, R_M32R_26_PLTREL }, |
| 1215 | { BFD_RELOC_M32R_COPY, R_M32R_COPY }, |
| 1216 | { BFD_RELOC_M32R_GLOB_DAT, R_M32R_GLOB_DAT }, |
| 1217 | { BFD_RELOC_M32R_JMP_SLOT, R_M32R_JMP_SLOT }, |
| 1218 | { BFD_RELOC_M32R_RELATIVE, R_M32R_RELATIVE }, |
| 1219 | { BFD_RELOC_M32R_GOTOFF, R_M32R_GOTOFF }, |
| 1220 | { BFD_RELOC_M32R_GOTPC24, R_M32R_GOTPC24 }, |
| 1221 | { BFD_RELOC_M32R_GOT16_HI_ULO, R_M32R_GOT16_HI_ULO }, |
| 1222 | { BFD_RELOC_M32R_GOT16_HI_SLO, R_M32R_GOT16_HI_SLO }, |
| 1223 | { BFD_RELOC_M32R_GOT16_LO, R_M32R_GOT16_LO }, |
| 1224 | { BFD_RELOC_M32R_GOTPC_HI_ULO, R_M32R_GOTPC_HI_ULO }, |
| 1225 | { BFD_RELOC_M32R_GOTPC_HI_SLO, R_M32R_GOTPC_HI_SLO }, |
| 1226 | { BFD_RELOC_M32R_GOTPC_LO, R_M32R_GOTPC_LO }, |
| 1227 | { BFD_RELOC_M32R_GOTOFF_HI_ULO, R_M32R_GOTOFF_HI_ULO }, |
| 1228 | { BFD_RELOC_M32R_GOTOFF_HI_SLO, R_M32R_GOTOFF_HI_SLO }, |
| 1229 | { BFD_RELOC_M32R_GOTOFF_LO, R_M32R_GOTOFF_LO }, |
| 1230 | }; |
| 1231 | #endif |
| 1232 | |
| 1233 | static reloc_howto_type * |
| 1234 | bfd_elf32_bfd_reloc_type_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1235 | bfd_reloc_code_real_type code) |
| 1236 | { |
| 1237 | unsigned int i; |
| 1238 | |
| 1239 | #ifdef USE_M32R_OLD_RELOC |
| 1240 | for (i = 0; |
| 1241 | i < sizeof (m32r_reloc_map_old) / sizeof (struct m32r_reloc_map); |
| 1242 | i++) |
| 1243 | if (m32r_reloc_map_old[i].bfd_reloc_val == code) |
| 1244 | return &m32r_elf_howto_table[m32r_reloc_map_old[i].elf_reloc_val]; |
| 1245 | |
| 1246 | #else /* ! USE_M32R_OLD_RELOC */ |
| 1247 | |
| 1248 | for (i = 0; |
| 1249 | i < sizeof (m32r_reloc_map) / sizeof (struct m32r_reloc_map); |
| 1250 | i++) |
| 1251 | if (m32r_reloc_map[i].bfd_reloc_val == code) |
| 1252 | return &m32r_elf_howto_table[m32r_reloc_map[i].elf_reloc_val]; |
| 1253 | #endif |
| 1254 | |
| 1255 | return NULL; |
| 1256 | } |
| 1257 | |
| 1258 | static reloc_howto_type * |
| 1259 | bfd_elf32_bfd_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, |
| 1260 | const char *r_name) |
| 1261 | { |
| 1262 | unsigned int i; |
| 1263 | |
| 1264 | for (i = 0; |
| 1265 | i < sizeof (m32r_elf_howto_table) / sizeof (m32r_elf_howto_table[0]); |
| 1266 | i++) |
| 1267 | if (m32r_elf_howto_table[i].name != NULL |
| 1268 | && strcasecmp (m32r_elf_howto_table[i].name, r_name) == 0) |
| 1269 | return &m32r_elf_howto_table[i]; |
| 1270 | |
| 1271 | return NULL; |
| 1272 | } |
| 1273 | |
| 1274 | /* Set the howto pointer for an M32R ELF reloc. */ |
| 1275 | |
| 1276 | static void |
| 1277 | m32r_info_to_howto_rel (bfd *abfd ATTRIBUTE_UNUSED, |
| 1278 | arelent *cache_ptr, |
| 1279 | Elf_Internal_Rela *dst) |
| 1280 | { |
| 1281 | unsigned int r_type; |
| 1282 | |
| 1283 | r_type = ELF32_R_TYPE (dst->r_info); |
| 1284 | BFD_ASSERT (ELF32_R_TYPE(dst->r_info) <= (unsigned int) R_M32R_GNU_VTENTRY); |
| 1285 | cache_ptr->howto = &m32r_elf_howto_table[r_type]; |
| 1286 | } |
| 1287 | |
| 1288 | static void |
| 1289 | m32r_info_to_howto (bfd *abfd ATTRIBUTE_UNUSED, |
| 1290 | arelent *cache_ptr, |
| 1291 | Elf_Internal_Rela *dst) |
| 1292 | { |
| 1293 | BFD_ASSERT ((ELF32_R_TYPE(dst->r_info) == (unsigned int) R_M32R_NONE) |
| 1294 | || ((ELF32_R_TYPE(dst->r_info) > (unsigned int) R_M32R_GNU_VTENTRY) |
| 1295 | && (ELF32_R_TYPE(dst->r_info) < (unsigned int) R_M32R_max))); |
| 1296 | cache_ptr->howto = &m32r_elf_howto_table[ELF32_R_TYPE(dst->r_info)]; |
| 1297 | } |
| 1298 | |
| 1299 | \f |
| 1300 | /* Given a BFD section, try to locate the corresponding ELF section |
| 1301 | index. */ |
| 1302 | |
| 1303 | static bfd_boolean |
| 1304 | _bfd_m32r_elf_section_from_bfd_section (bfd *abfd ATTRIBUTE_UNUSED, |
| 1305 | asection *sec, |
| 1306 | int *retval) |
| 1307 | { |
| 1308 | if (strcmp (bfd_get_section_name (abfd, sec), ".scommon") == 0) |
| 1309 | { |
| 1310 | *retval = SHN_M32R_SCOMMON; |
| 1311 | return TRUE; |
| 1312 | } |
| 1313 | return FALSE; |
| 1314 | } |
| 1315 | |
| 1316 | /* M32R ELF uses two common sections. One is the usual one, and the other |
| 1317 | is for small objects. All the small objects are kept together, and then |
| 1318 | referenced via one register, which yields faster assembler code. It is |
| 1319 | up to the compiler to emit an instruction to load the register with |
| 1320 | _SDA_BASE. This is what we use for the small common section. This |
| 1321 | approach is copied from elf32-mips.c. */ |
| 1322 | static asection m32r_elf_scom_section; |
| 1323 | static asymbol m32r_elf_scom_symbol; |
| 1324 | static asymbol *m32r_elf_scom_symbol_ptr; |
| 1325 | |
| 1326 | /* Handle the special M32R section numbers that a symbol may use. */ |
| 1327 | |
| 1328 | static void |
| 1329 | _bfd_m32r_elf_symbol_processing (bfd *abfd ATTRIBUTE_UNUSED, asymbol *asym) |
| 1330 | { |
| 1331 | elf_symbol_type *elfsym = (elf_symbol_type *) asym; |
| 1332 | |
| 1333 | switch (elfsym->internal_elf_sym.st_shndx) |
| 1334 | { |
| 1335 | case SHN_M32R_SCOMMON: |
| 1336 | if (m32r_elf_scom_section.name == NULL) |
| 1337 | { |
| 1338 | /* Initialize the small common section. */ |
| 1339 | m32r_elf_scom_section.name = ".scommon"; |
| 1340 | m32r_elf_scom_section.flags = SEC_IS_COMMON; |
| 1341 | m32r_elf_scom_section.output_section = &m32r_elf_scom_section; |
| 1342 | m32r_elf_scom_section.symbol = &m32r_elf_scom_symbol; |
| 1343 | m32r_elf_scom_section.symbol_ptr_ptr = &m32r_elf_scom_symbol_ptr; |
| 1344 | m32r_elf_scom_symbol.name = ".scommon"; |
| 1345 | m32r_elf_scom_symbol.flags = BSF_SECTION_SYM; |
| 1346 | m32r_elf_scom_symbol.section = &m32r_elf_scom_section; |
| 1347 | m32r_elf_scom_symbol_ptr = &m32r_elf_scom_symbol; |
| 1348 | } |
| 1349 | asym->section = &m32r_elf_scom_section; |
| 1350 | asym->value = elfsym->internal_elf_sym.st_size; |
| 1351 | break; |
| 1352 | } |
| 1353 | } |
| 1354 | |
| 1355 | /* Hook called by the linker routine which adds symbols from an object |
| 1356 | file. We must handle the special M32R section numbers here. |
| 1357 | We also keep watching for whether we need to create the sdata special |
| 1358 | linker sections. */ |
| 1359 | |
| 1360 | static bfd_boolean |
| 1361 | m32r_elf_add_symbol_hook (bfd *abfd, |
| 1362 | struct bfd_link_info *info, |
| 1363 | Elf_Internal_Sym *sym, |
| 1364 | const char **namep, |
| 1365 | flagword *flagsp ATTRIBUTE_UNUSED, |
| 1366 | asection **secp, |
| 1367 | bfd_vma *valp) |
| 1368 | { |
| 1369 | if (! info->relocatable |
| 1370 | && (*namep)[0] == '_' && (*namep)[1] == 'S' |
| 1371 | && strcmp (*namep, "_SDA_BASE_") == 0 |
| 1372 | && is_elf_hash_table (info->hash)) |
| 1373 | { |
| 1374 | /* This is simpler than using _bfd_elf_create_linker_section |
| 1375 | (our needs are simpler than ppc's needs). Also |
| 1376 | _bfd_elf_create_linker_section currently has a bug where if a .sdata |
| 1377 | section already exists a new one is created that follows it which |
| 1378 | screws of _SDA_BASE_ address calcs because output_offset != 0. */ |
| 1379 | struct elf_link_hash_entry *h; |
| 1380 | struct bfd_link_hash_entry *bh; |
| 1381 | asection *s = bfd_get_section_by_name (abfd, ".sdata"); |
| 1382 | |
| 1383 | /* The following code was cobbled from elf32-ppc.c and elflink.c. */ |
| 1384 | if (s == NULL) |
| 1385 | { |
| 1386 | flagword flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS |
| 1387 | | SEC_IN_MEMORY | SEC_LINKER_CREATED); |
| 1388 | |
| 1389 | s = bfd_make_section_anyway_with_flags (abfd, ".sdata", |
| 1390 | flags); |
| 1391 | if (s == NULL) |
| 1392 | return FALSE; |
| 1393 | bfd_set_section_alignment (abfd, s, 2); |
| 1394 | } |
| 1395 | |
| 1396 | bh = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", |
| 1397 | FALSE, FALSE, FALSE); |
| 1398 | |
| 1399 | if ((bh == NULL || bh->type == bfd_link_hash_undefined) |
| 1400 | && !(_bfd_generic_link_add_one_symbol (info, |
| 1401 | abfd, |
| 1402 | "_SDA_BASE_", |
| 1403 | BSF_GLOBAL, |
| 1404 | s, |
| 1405 | (bfd_vma) 32768, |
| 1406 | NULL, |
| 1407 | FALSE, |
| 1408 | get_elf_backend_data (abfd)->collect, |
| 1409 | &bh))) |
| 1410 | return FALSE; |
| 1411 | h = (struct elf_link_hash_entry *) bh; |
| 1412 | h->type = STT_OBJECT; |
| 1413 | } |
| 1414 | |
| 1415 | switch (sym->st_shndx) |
| 1416 | { |
| 1417 | case SHN_M32R_SCOMMON: |
| 1418 | *secp = bfd_make_section_old_way (abfd, ".scommon"); |
| 1419 | (*secp)->flags |= SEC_IS_COMMON; |
| 1420 | *valp = sym->st_size; |
| 1421 | break; |
| 1422 | } |
| 1423 | |
| 1424 | return TRUE; |
| 1425 | } |
| 1426 | |
| 1427 | /* We have to figure out the SDA_BASE value, so that we can adjust the |
| 1428 | symbol value correctly. We look up the symbol _SDA_BASE_ in the output |
| 1429 | BFD. If we can't find it, we're stuck. We cache it in the ELF |
| 1430 | target data. We don't need to adjust the symbol value for an |
| 1431 | external symbol if we are producing relocatable output. */ |
| 1432 | |
| 1433 | static bfd_reloc_status_type |
| 1434 | m32r_elf_final_sda_base (bfd *output_bfd, |
| 1435 | struct bfd_link_info *info, |
| 1436 | const char **error_message, |
| 1437 | bfd_vma *psb) |
| 1438 | { |
| 1439 | if (elf_gp (output_bfd) == 0) |
| 1440 | { |
| 1441 | struct bfd_link_hash_entry *h; |
| 1442 | |
| 1443 | h = bfd_link_hash_lookup (info->hash, "_SDA_BASE_", FALSE, FALSE, TRUE); |
| 1444 | if (h != NULL && h->type == bfd_link_hash_defined) |
| 1445 | elf_gp (output_bfd) = (h->u.def.value |
| 1446 | + h->u.def.section->output_section->vma |
| 1447 | + h->u.def.section->output_offset); |
| 1448 | else |
| 1449 | { |
| 1450 | /* Only get the error once. */ |
| 1451 | *psb = elf_gp (output_bfd) = 4; |
| 1452 | *error_message = |
| 1453 | (const char *) _("SDA relocation when _SDA_BASE_ not defined"); |
| 1454 | return bfd_reloc_dangerous; |
| 1455 | } |
| 1456 | } |
| 1457 | *psb = elf_gp (output_bfd); |
| 1458 | return bfd_reloc_ok; |
| 1459 | } |
| 1460 | \f |
| 1461 | /* Return size of a PLT entry. */ |
| 1462 | #define elf_m32r_sizeof_plt(info) PLT_ENTRY_SIZE |
| 1463 | |
| 1464 | /* The m32r linker needs to keep track of the number of relocs that it |
| 1465 | decides to copy in check_relocs for each symbol. This is so that |
| 1466 | it can discard PC relative relocs if it doesn't need them when |
| 1467 | linking with -Bsymbolic. We store the information in a field |
| 1468 | extending the regular ELF linker hash table. */ |
| 1469 | |
| 1470 | /* This structure keeps track of the number of PC relative relocs we |
| 1471 | have copied for a given symbol. */ |
| 1472 | |
| 1473 | struct elf_m32r_pcrel_relocs_copied |
| 1474 | { |
| 1475 | /* Next section. */ |
| 1476 | struct elf_m32r_pcrel_relocs_copied *next; |
| 1477 | /* A section in dynobj. */ |
| 1478 | asection *section; |
| 1479 | /* Number of relocs copied in this section. */ |
| 1480 | bfd_size_type count; |
| 1481 | }; |
| 1482 | |
| 1483 | /* The sh linker needs to keep track of the number of relocs that it |
| 1484 | decides to copy as dynamic relocs in check_relocs for each symbol. |
| 1485 | This is so that it can later discard them if they are found to be |
| 1486 | unnecessary. We store the information in a field extending the |
| 1487 | regular ELF linker hash table. */ |
| 1488 | |
| 1489 | struct elf_m32r_dyn_relocs |
| 1490 | { |
| 1491 | struct elf_m32r_dyn_relocs *next; |
| 1492 | |
| 1493 | /* The input section of the reloc. */ |
| 1494 | asection *sec; |
| 1495 | |
| 1496 | /* Total number of relocs copied for the input section. */ |
| 1497 | bfd_size_type count; |
| 1498 | |
| 1499 | /* Number of pc-relative relocs copied for the input section. */ |
| 1500 | bfd_size_type pc_count; |
| 1501 | }; |
| 1502 | |
| 1503 | |
| 1504 | /* m32r ELF linker hash entry. */ |
| 1505 | |
| 1506 | struct elf_m32r_link_hash_entry |
| 1507 | { |
| 1508 | struct elf_link_hash_entry root; |
| 1509 | |
| 1510 | /* Track dynamic relocs copied for this symbol. */ |
| 1511 | struct elf_m32r_dyn_relocs *dyn_relocs; |
| 1512 | }; |
| 1513 | |
| 1514 | /* m32r ELF linker hash table. */ |
| 1515 | |
| 1516 | struct elf_m32r_link_hash_table |
| 1517 | { |
| 1518 | struct elf_link_hash_table root; |
| 1519 | |
| 1520 | /* Short-cuts to get to dynamic linker sections. */ |
| 1521 | asection *sgot; |
| 1522 | asection *sgotplt; |
| 1523 | asection *srelgot; |
| 1524 | asection *splt; |
| 1525 | asection *srelplt; |
| 1526 | asection *sdynbss; |
| 1527 | asection *srelbss; |
| 1528 | |
| 1529 | /* Small local sym to section mapping cache. */ |
| 1530 | struct sym_sec_cache sym_sec; |
| 1531 | }; |
| 1532 | |
| 1533 | /* Traverse an m32r ELF linker hash table. */ |
| 1534 | |
| 1535 | #define m32r_elf_link_hash_traverse(table, func, info) \ |
| 1536 | (elf_link_hash_traverse \ |
| 1537 | (&(table)->root, \ |
| 1538 | (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \ |
| 1539 | (info))) |
| 1540 | |
| 1541 | /* Get the m32r ELF linker hash table from a link_info structure. */ |
| 1542 | |
| 1543 | |
| 1544 | #define m32r_elf_hash_table(p) \ |
| 1545 | ((struct elf_m32r_link_hash_table *) ((p)->hash)) |
| 1546 | |
| 1547 | /* Create an entry in an m32r ELF linker hash table. */ |
| 1548 | |
| 1549 | static struct bfd_hash_entry * |
| 1550 | m32r_elf_link_hash_newfunc (struct bfd_hash_entry *entry, |
| 1551 | struct bfd_hash_table *table, |
| 1552 | const char *string) |
| 1553 | { |
| 1554 | struct elf_m32r_link_hash_entry *ret = |
| 1555 | (struct elf_m32r_link_hash_entry *) entry; |
| 1556 | |
| 1557 | /* Allocate the structure if it has not already been allocated by a |
| 1558 | subclass. */ |
| 1559 | if (ret == NULL) |
| 1560 | ret = bfd_hash_allocate (table, |
| 1561 | sizeof (struct elf_m32r_link_hash_entry)); |
| 1562 | if (ret == NULL) |
| 1563 | return NULL; |
| 1564 | |
| 1565 | /* Call the allocation method of the superclass. */ |
| 1566 | ret = ((struct elf_m32r_link_hash_entry *) |
| 1567 | _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret, |
| 1568 | table, string)); |
| 1569 | if (ret != NULL) |
| 1570 | { |
| 1571 | struct elf_m32r_link_hash_entry *eh; |
| 1572 | |
| 1573 | eh = (struct elf_m32r_link_hash_entry *) ret; |
| 1574 | eh->dyn_relocs = NULL; |
| 1575 | } |
| 1576 | |
| 1577 | return (struct bfd_hash_entry *) ret; |
| 1578 | } |
| 1579 | |
| 1580 | /* Create an m32r ELF linker hash table. */ |
| 1581 | |
| 1582 | static struct bfd_link_hash_table * |
| 1583 | m32r_elf_link_hash_table_create (bfd *abfd) |
| 1584 | { |
| 1585 | struct elf_m32r_link_hash_table *ret; |
| 1586 | bfd_size_type amt = sizeof (struct elf_m32r_link_hash_table); |
| 1587 | |
| 1588 | ret = bfd_malloc (amt); |
| 1589 | if (ret == NULL) |
| 1590 | return NULL; |
| 1591 | |
| 1592 | if (!_bfd_elf_link_hash_table_init (&ret->root, abfd, |
| 1593 | m32r_elf_link_hash_newfunc, |
| 1594 | sizeof (struct elf_m32r_link_hash_entry))) |
| 1595 | { |
| 1596 | free (ret); |
| 1597 | return NULL; |
| 1598 | } |
| 1599 | |
| 1600 | ret->sgot = NULL; |
| 1601 | ret->sgotplt = NULL; |
| 1602 | ret->srelgot = NULL; |
| 1603 | ret->splt = NULL; |
| 1604 | ret->srelplt = NULL; |
| 1605 | ret->sdynbss = NULL; |
| 1606 | ret->srelbss = NULL; |
| 1607 | ret->sym_sec.abfd = NULL; |
| 1608 | |
| 1609 | return &ret->root.root; |
| 1610 | } |
| 1611 | |
| 1612 | /* Create .got, .gotplt, and .rela.got sections in DYNOBJ, and set up |
| 1613 | shortcuts to them in our hash table. */ |
| 1614 | |
| 1615 | static bfd_boolean |
| 1616 | create_got_section (bfd *dynobj, struct bfd_link_info *info) |
| 1617 | { |
| 1618 | struct elf_m32r_link_hash_table *htab; |
| 1619 | |
| 1620 | if (! _bfd_elf_create_got_section (dynobj, info)) |
| 1621 | return FALSE; |
| 1622 | |
| 1623 | htab = m32r_elf_hash_table (info); |
| 1624 | htab->sgot = bfd_get_section_by_name (dynobj, ".got"); |
| 1625 | htab->sgotplt = bfd_get_section_by_name (dynobj, ".got.plt"); |
| 1626 | if (! htab->sgot || ! htab->sgotplt) |
| 1627 | abort (); |
| 1628 | |
| 1629 | htab->srelgot = bfd_make_section_with_flags (dynobj, ".rela.got", |
| 1630 | (SEC_ALLOC |
| 1631 | | SEC_LOAD |
| 1632 | | SEC_HAS_CONTENTS |
| 1633 | | SEC_IN_MEMORY |
| 1634 | | SEC_LINKER_CREATED |
| 1635 | | SEC_READONLY)); |
| 1636 | if (htab->srelgot == NULL |
| 1637 | || ! bfd_set_section_alignment (dynobj, htab->srelgot, 2)) |
| 1638 | return FALSE; |
| 1639 | |
| 1640 | return TRUE; |
| 1641 | } |
| 1642 | |
| 1643 | /* Create dynamic sections when linking against a dynamic object. */ |
| 1644 | |
| 1645 | static bfd_boolean |
| 1646 | m32r_elf_create_dynamic_sections (bfd *abfd, struct bfd_link_info *info) |
| 1647 | { |
| 1648 | struct elf_m32r_link_hash_table *htab; |
| 1649 | flagword flags, pltflags; |
| 1650 | asection *s; |
| 1651 | const struct elf_backend_data *bed = get_elf_backend_data (abfd); |
| 1652 | int ptralign = 2; /* 32bit */ |
| 1653 | |
| 1654 | htab = m32r_elf_hash_table (info); |
| 1655 | |
| 1656 | /* We need to create .plt, .rel[a].plt, .got, .got.plt, .dynbss, and |
| 1657 | .rel[a].bss sections. */ |
| 1658 | flags = (SEC_ALLOC | SEC_LOAD | SEC_HAS_CONTENTS | SEC_IN_MEMORY |
| 1659 | | SEC_LINKER_CREATED); |
| 1660 | |
| 1661 | pltflags = flags; |
| 1662 | pltflags |= SEC_CODE; |
| 1663 | if (bed->plt_not_loaded) |
| 1664 | pltflags &= ~ (SEC_LOAD | SEC_HAS_CONTENTS); |
| 1665 | if (bed->plt_readonly) |
| 1666 | pltflags |= SEC_READONLY; |
| 1667 | |
| 1668 | s = bfd_make_section_with_flags (abfd, ".plt", pltflags); |
| 1669 | htab->splt = s; |
| 1670 | if (s == NULL |
| 1671 | || ! bfd_set_section_alignment (abfd, s, bed->plt_alignment)) |
| 1672 | return FALSE; |
| 1673 | |
| 1674 | if (bed->want_plt_sym) |
| 1675 | { |
| 1676 | /* Define the symbol _PROCEDURE_LINKAGE_TABLE_ at the start of the |
| 1677 | .plt section. */ |
| 1678 | struct bfd_link_hash_entry *bh = NULL; |
| 1679 | struct elf_link_hash_entry *h; |
| 1680 | |
| 1681 | if (! (_bfd_generic_link_add_one_symbol |
| 1682 | (info, abfd, "_PROCEDURE_LINKAGE_TABLE_", BSF_GLOBAL, s, |
| 1683 | (bfd_vma) 0, NULL, FALSE, |
| 1684 | get_elf_backend_data (abfd)->collect, &bh))) |
| 1685 | return FALSE; |
| 1686 | h = (struct elf_link_hash_entry *) bh; |
| 1687 | h->def_regular = 1; |
| 1688 | h->type = STT_OBJECT; |
| 1689 | htab->root.hplt = h; |
| 1690 | |
| 1691 | if (info->shared |
| 1692 | && ! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 1693 | return FALSE; |
| 1694 | } |
| 1695 | |
| 1696 | s = bfd_make_section_with_flags (abfd, |
| 1697 | bed->default_use_rela_p ? ".rela.plt" : ".rel.plt", |
| 1698 | flags | SEC_READONLY); |
| 1699 | htab->srelplt = s; |
| 1700 | if (s == NULL |
| 1701 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 1702 | return FALSE; |
| 1703 | |
| 1704 | if (htab->sgot == NULL |
| 1705 | && ! create_got_section (abfd, info)) |
| 1706 | return FALSE; |
| 1707 | |
| 1708 | { |
| 1709 | const char *secname; |
| 1710 | char *relname; |
| 1711 | flagword secflags; |
| 1712 | asection *sec; |
| 1713 | |
| 1714 | for (sec = abfd->sections; sec; sec = sec->next) |
| 1715 | { |
| 1716 | secflags = bfd_get_section_flags (abfd, sec); |
| 1717 | if ((secflags & (SEC_DATA | SEC_LINKER_CREATED)) |
| 1718 | || ((secflags & SEC_HAS_CONTENTS) != SEC_HAS_CONTENTS)) |
| 1719 | continue; |
| 1720 | secname = bfd_get_section_name (abfd, sec); |
| 1721 | relname = bfd_malloc ((bfd_size_type) strlen (secname) + 6); |
| 1722 | strcpy (relname, ".rela"); |
| 1723 | strcat (relname, secname); |
| 1724 | if (bfd_get_section_by_name (abfd, secname)) |
| 1725 | continue; |
| 1726 | s = bfd_make_section_with_flags (abfd, relname, |
| 1727 | flags | SEC_READONLY); |
| 1728 | if (s == NULL |
| 1729 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 1730 | return FALSE; |
| 1731 | } |
| 1732 | } |
| 1733 | |
| 1734 | if (bed->want_dynbss) |
| 1735 | { |
| 1736 | /* The .dynbss section is a place to put symbols which are defined |
| 1737 | by dynamic objects, are referenced by regular objects, and are |
| 1738 | not functions. We must allocate space for them in the process |
| 1739 | image and use a R_*_COPY reloc to tell the dynamic linker to |
| 1740 | initialize them at run time. The linker script puts the .dynbss |
| 1741 | section into the .bss section of the final image. */ |
| 1742 | s = bfd_make_section_with_flags (abfd, ".dynbss", |
| 1743 | SEC_ALLOC | SEC_LINKER_CREATED); |
| 1744 | htab->sdynbss = s; |
| 1745 | if (s == NULL) |
| 1746 | return FALSE; |
| 1747 | /* The .rel[a].bss section holds copy relocs. This section is not |
| 1748 | normally needed. We need to create it here, though, so that the |
| 1749 | linker will map it to an output section. We can't just create it |
| 1750 | only if we need it, because we will not know whether we need it |
| 1751 | until we have seen all the input files, and the first time the |
| 1752 | main linker code calls BFD after examining all the input files |
| 1753 | (size_dynamic_sections) the input sections have already been |
| 1754 | mapped to the output sections. If the section turns out not to |
| 1755 | be needed, we can discard it later. We will never need this |
| 1756 | section when generating a shared object, since they do not use |
| 1757 | copy relocs. */ |
| 1758 | if (! info->shared) |
| 1759 | { |
| 1760 | s = bfd_make_section_with_flags (abfd, |
| 1761 | (bed->default_use_rela_p |
| 1762 | ? ".rela.bss" : ".rel.bss"), |
| 1763 | flags | SEC_READONLY); |
| 1764 | htab->srelbss = s; |
| 1765 | if (s == NULL |
| 1766 | || ! bfd_set_section_alignment (abfd, s, ptralign)) |
| 1767 | return FALSE; |
| 1768 | } |
| 1769 | } |
| 1770 | |
| 1771 | return TRUE; |
| 1772 | } |
| 1773 | |
| 1774 | /* Copy the extra info we tack onto an elf_link_hash_entry. */ |
| 1775 | |
| 1776 | static void |
| 1777 | m32r_elf_copy_indirect_symbol (struct bfd_link_info *info, |
| 1778 | struct elf_link_hash_entry *dir, |
| 1779 | struct elf_link_hash_entry *ind) |
| 1780 | { |
| 1781 | struct elf_m32r_link_hash_entry * edir; |
| 1782 | struct elf_m32r_link_hash_entry * eind; |
| 1783 | |
| 1784 | edir = (struct elf_m32r_link_hash_entry *) dir; |
| 1785 | eind = (struct elf_m32r_link_hash_entry *) ind; |
| 1786 | |
| 1787 | if (eind->dyn_relocs != NULL) |
| 1788 | { |
| 1789 | if (edir->dyn_relocs != NULL) |
| 1790 | { |
| 1791 | struct elf_m32r_dyn_relocs **pp; |
| 1792 | struct elf_m32r_dyn_relocs *p; |
| 1793 | |
| 1794 | /* Add reloc counts against the indirect sym to the direct sym |
| 1795 | list. Merge any entries against the same section. */ |
| 1796 | for (pp = &eind->dyn_relocs; (p = *pp) != NULL;) |
| 1797 | { |
| 1798 | struct elf_m32r_dyn_relocs *q; |
| 1799 | |
| 1800 | for (q = edir->dyn_relocs; q != NULL; q = q->next) |
| 1801 | if (q->sec == p->sec) |
| 1802 | { |
| 1803 | q->pc_count += p->pc_count; |
| 1804 | q->count += p->count; |
| 1805 | *pp = p->next; |
| 1806 | break; |
| 1807 | } |
| 1808 | if (q == NULL) |
| 1809 | pp = &p->next; |
| 1810 | } |
| 1811 | *pp = edir->dyn_relocs; |
| 1812 | } |
| 1813 | |
| 1814 | edir->dyn_relocs = eind->dyn_relocs; |
| 1815 | eind->dyn_relocs = NULL; |
| 1816 | } |
| 1817 | |
| 1818 | _bfd_elf_link_hash_copy_indirect (info, dir, ind); |
| 1819 | } |
| 1820 | |
| 1821 | \f |
| 1822 | /* Adjust a symbol defined by a dynamic object and referenced by a |
| 1823 | regular object. The current definition is in some section of the |
| 1824 | dynamic object, but we're not including those sections. We have to |
| 1825 | change the definition to something the rest of the link can |
| 1826 | understand. */ |
| 1827 | |
| 1828 | static bfd_boolean |
| 1829 | m32r_elf_adjust_dynamic_symbol (struct bfd_link_info *info, |
| 1830 | struct elf_link_hash_entry *h) |
| 1831 | { |
| 1832 | struct elf_m32r_link_hash_table *htab; |
| 1833 | struct elf_m32r_link_hash_entry *eh; |
| 1834 | struct elf_m32r_dyn_relocs *p; |
| 1835 | bfd *dynobj; |
| 1836 | asection *s; |
| 1837 | |
| 1838 | #ifdef DEBUG_PIC |
| 1839 | printf ("m32r_elf_adjust_dynamic_symbol()\n"); |
| 1840 | #endif |
| 1841 | |
| 1842 | dynobj = elf_hash_table (info)->dynobj; |
| 1843 | |
| 1844 | /* Make sure we know what is going on here. */ |
| 1845 | BFD_ASSERT (dynobj != NULL |
| 1846 | && (h->needs_plt |
| 1847 | || h->u.weakdef != NULL |
| 1848 | || (h->def_dynamic |
| 1849 | && h->ref_regular |
| 1850 | && !h->def_regular))); |
| 1851 | |
| 1852 | /* If this is a function, put it in the procedure linkage table. We |
| 1853 | will fill in the contents of the procedure linkage table later, |
| 1854 | when we know the address of the .got section. */ |
| 1855 | if (h->type == STT_FUNC |
| 1856 | || h->needs_plt) |
| 1857 | { |
| 1858 | if (! info->shared |
| 1859 | && !h->def_dynamic |
| 1860 | && !h->ref_dynamic |
| 1861 | && h->root.type != bfd_link_hash_undefweak |
| 1862 | && h->root.type != bfd_link_hash_undefined) |
| 1863 | { |
| 1864 | /* This case can occur if we saw a PLT reloc in an input |
| 1865 | file, but the symbol was never referred to by a dynamic |
| 1866 | object. In such a case, we don't actually need to build |
| 1867 | a procedure linkage table, and we can just do a PCREL |
| 1868 | reloc instead. */ |
| 1869 | h->plt.offset = (bfd_vma) -1; |
| 1870 | h->needs_plt = 0; |
| 1871 | } |
| 1872 | |
| 1873 | return TRUE; |
| 1874 | } |
| 1875 | else |
| 1876 | h->plt.offset = (bfd_vma) -1; |
| 1877 | |
| 1878 | /* If this is a weak symbol, and there is a real definition, the |
| 1879 | processor independent code will have arranged for us to see the |
| 1880 | real definition first, and we can just use the same value. */ |
| 1881 | if (h->u.weakdef != NULL) |
| 1882 | { |
| 1883 | BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined |
| 1884 | || h->u.weakdef->root.type == bfd_link_hash_defweak); |
| 1885 | h->root.u.def.section = h->u.weakdef->root.u.def.section; |
| 1886 | h->root.u.def.value = h->u.weakdef->root.u.def.value; |
| 1887 | return TRUE; |
| 1888 | } |
| 1889 | |
| 1890 | /* This is a reference to a symbol defined by a dynamic object which |
| 1891 | is not a function. */ |
| 1892 | |
| 1893 | /* If we are creating a shared library, we must presume that the |
| 1894 | only references to the symbol are via the global offset table. |
| 1895 | For such cases we need not do anything here; the relocations will |
| 1896 | be handled correctly by relocate_section. */ |
| 1897 | if (info->shared) |
| 1898 | return TRUE; |
| 1899 | |
| 1900 | /* If there are no references to this symbol that do not use the |
| 1901 | GOT, we don't need to generate a copy reloc. */ |
| 1902 | if (!h->non_got_ref) |
| 1903 | return TRUE; |
| 1904 | |
| 1905 | /* If -z nocopyreloc was given, we won't generate them either. */ |
| 1906 | if (info->nocopyreloc) |
| 1907 | { |
| 1908 | h->non_got_ref = 0; |
| 1909 | return TRUE; |
| 1910 | } |
| 1911 | |
| 1912 | eh = (struct elf_m32r_link_hash_entry *) h; |
| 1913 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 1914 | { |
| 1915 | s = p->sec->output_section; |
| 1916 | if (s != NULL && (s->flags & (SEC_READONLY | SEC_HAS_CONTENTS)) != 0) |
| 1917 | break; |
| 1918 | } |
| 1919 | |
| 1920 | /* If we didn't find any dynamic relocs in sections which needs the |
| 1921 | copy reloc, then we'll be keeping the dynamic relocs and avoiding |
| 1922 | the copy reloc. */ |
| 1923 | if (p == NULL) |
| 1924 | { |
| 1925 | h->non_got_ref = 0; |
| 1926 | return TRUE; |
| 1927 | } |
| 1928 | |
| 1929 | if (h->size == 0) |
| 1930 | { |
| 1931 | (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"), |
| 1932 | h->root.root.string); |
| 1933 | return TRUE; |
| 1934 | } |
| 1935 | |
| 1936 | /* We must allocate the symbol in our .dynbss section, which will |
| 1937 | become part of the .bss section of the executable. There will be |
| 1938 | an entry for this symbol in the .dynsym section. The dynamic |
| 1939 | object will contain position independent code, so all references |
| 1940 | from the dynamic object to this symbol will go through the global |
| 1941 | offset table. The dynamic linker will use the .dynsym entry to |
| 1942 | determine the address it must put in the global offset table, so |
| 1943 | both the dynamic object and the regular object will refer to the |
| 1944 | same memory location for the variable. */ |
| 1945 | |
| 1946 | htab = m32r_elf_hash_table (info); |
| 1947 | s = htab->sdynbss; |
| 1948 | BFD_ASSERT (s != NULL); |
| 1949 | |
| 1950 | /* We must generate a R_M32R_COPY reloc to tell the dynamic linker |
| 1951 | to copy the initial value out of the dynamic object and into the |
| 1952 | runtime process image. We need to remember the offset into the |
| 1953 | .rela.bss section we are going to use. */ |
| 1954 | if ((h->root.u.def.section->flags & SEC_ALLOC) != 0) |
| 1955 | { |
| 1956 | asection *srel; |
| 1957 | |
| 1958 | srel = htab->srelbss; |
| 1959 | BFD_ASSERT (srel != NULL); |
| 1960 | srel->size += sizeof (Elf32_External_Rela); |
| 1961 | h->needs_copy = 1; |
| 1962 | } |
| 1963 | |
| 1964 | return _bfd_elf_adjust_dynamic_copy (h, s); |
| 1965 | } |
| 1966 | |
| 1967 | /* Allocate space in .plt, .got and associated reloc sections for |
| 1968 | dynamic relocs. */ |
| 1969 | |
| 1970 | static bfd_boolean |
| 1971 | allocate_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
| 1972 | { |
| 1973 | struct bfd_link_info *info; |
| 1974 | struct elf_m32r_link_hash_table *htab; |
| 1975 | struct elf_m32r_link_hash_entry *eh; |
| 1976 | struct elf_m32r_dyn_relocs *p; |
| 1977 | |
| 1978 | if (h->root.type == bfd_link_hash_indirect) |
| 1979 | return TRUE; |
| 1980 | |
| 1981 | if (h->root.type == bfd_link_hash_warning) |
| 1982 | /* When warning symbols are created, they **replace** the "real" |
| 1983 | entry in the hash table, thus we never get to see the real |
| 1984 | symbol in a hash traversal. So look at it now. */ |
| 1985 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 1986 | |
| 1987 | info = (struct bfd_link_info *) inf; |
| 1988 | htab = m32r_elf_hash_table (info); |
| 1989 | |
| 1990 | eh = (struct elf_m32r_link_hash_entry *) h; |
| 1991 | |
| 1992 | if (htab->root.dynamic_sections_created |
| 1993 | && h->plt.refcount > 0) |
| 1994 | { |
| 1995 | /* Make sure this symbol is output as a dynamic symbol. |
| 1996 | Undefined weak syms won't yet be marked as dynamic. */ |
| 1997 | if (h->dynindx == -1 |
| 1998 | && !h->forced_local) |
| 1999 | { |
| 2000 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2001 | return FALSE; |
| 2002 | } |
| 2003 | |
| 2004 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (1, info->shared, h)) |
| 2005 | { |
| 2006 | asection *s = htab->splt; |
| 2007 | |
| 2008 | /* If this is the first .plt entry, make room for the special |
| 2009 | first entry. */ |
| 2010 | if (s->size == 0) |
| 2011 | s->size += PLT_ENTRY_SIZE; |
| 2012 | |
| 2013 | h->plt.offset = s->size; |
| 2014 | |
| 2015 | /* If this symbol is not defined in a regular file, and we are |
| 2016 | not generating a shared library, then set the symbol to this |
| 2017 | location in the .plt. This is required to make function |
| 2018 | pointers compare as equal between the normal executable and |
| 2019 | the shared library. */ |
| 2020 | if (! info->shared |
| 2021 | && !h->def_regular) |
| 2022 | { |
| 2023 | h->root.u.def.section = s; |
| 2024 | h->root.u.def.value = h->plt.offset; |
| 2025 | } |
| 2026 | |
| 2027 | /* Make room for this entry. */ |
| 2028 | s->size += PLT_ENTRY_SIZE; |
| 2029 | |
| 2030 | /* We also need to make an entry in the .got.plt section, which |
| 2031 | will be placed in the .got section by the linker script. */ |
| 2032 | htab->sgotplt->size += 4; |
| 2033 | |
| 2034 | /* We also need to make an entry in the .rel.plt section. */ |
| 2035 | htab->srelplt->size += sizeof (Elf32_External_Rela); |
| 2036 | } |
| 2037 | else |
| 2038 | { |
| 2039 | h->plt.offset = (bfd_vma) -1; |
| 2040 | h->needs_plt = 0; |
| 2041 | } |
| 2042 | } |
| 2043 | else |
| 2044 | { |
| 2045 | h->plt.offset = (bfd_vma) -1; |
| 2046 | h->needs_plt = 0; |
| 2047 | } |
| 2048 | |
| 2049 | if (h->got.refcount > 0) |
| 2050 | { |
| 2051 | asection *s; |
| 2052 | bfd_boolean dyn; |
| 2053 | |
| 2054 | /* Make sure this symbol is output as a dynamic symbol. |
| 2055 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2056 | if (h->dynindx == -1 |
| 2057 | && !h->forced_local) |
| 2058 | { |
| 2059 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2060 | return FALSE; |
| 2061 | } |
| 2062 | |
| 2063 | s = htab->sgot; |
| 2064 | |
| 2065 | h->got.offset = s->size; |
| 2066 | s->size += 4; |
| 2067 | dyn = htab->root.dynamic_sections_created; |
| 2068 | if (WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h)) |
| 2069 | htab->srelgot->size += sizeof (Elf32_External_Rela); |
| 2070 | } |
| 2071 | else |
| 2072 | h->got.offset = (bfd_vma) -1; |
| 2073 | |
| 2074 | if (eh->dyn_relocs == NULL) |
| 2075 | return TRUE; |
| 2076 | |
| 2077 | /* In the shared -Bsymbolic case, discard space allocated for |
| 2078 | dynamic pc-relative relocs against symbols which turn out to be |
| 2079 | defined in regular objects. For the normal shared case, discard |
| 2080 | space for pc-relative relocs that have become local due to symbol |
| 2081 | visibility changes. */ |
| 2082 | |
| 2083 | if (info->shared) |
| 2084 | { |
| 2085 | if (h->def_regular |
| 2086 | && (h->forced_local |
| 2087 | || info->symbolic)) |
| 2088 | { |
| 2089 | struct elf_m32r_dyn_relocs **pp; |
| 2090 | |
| 2091 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL;) |
| 2092 | { |
| 2093 | p->count -= p->pc_count; |
| 2094 | p->pc_count = 0; |
| 2095 | if (p->count == 0) |
| 2096 | *pp = p->next; |
| 2097 | else |
| 2098 | pp = &p->next; |
| 2099 | } |
| 2100 | } |
| 2101 | |
| 2102 | /* Also discard relocs on undefined weak syms with non-default |
| 2103 | visibility. */ |
| 2104 | if (eh->dyn_relocs != NULL |
| 2105 | && h->root.type == bfd_link_hash_undefweak) |
| 2106 | { |
| 2107 | if (ELF_ST_VISIBILITY (h->other) != STV_DEFAULT) |
| 2108 | eh->dyn_relocs = NULL; |
| 2109 | |
| 2110 | /* Make sure undefined weak symbols are output as a dynamic |
| 2111 | symbol in PIEs. */ |
| 2112 | else if (h->dynindx == -1 |
| 2113 | && !h->forced_local) |
| 2114 | { |
| 2115 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2116 | return FALSE; |
| 2117 | } |
| 2118 | } |
| 2119 | } |
| 2120 | else |
| 2121 | { |
| 2122 | /* For the non-shared case, discard space for relocs against |
| 2123 | symbols which turn out to need copy relocs or are not |
| 2124 | dynamic. */ |
| 2125 | |
| 2126 | if (!h->non_got_ref |
| 2127 | && ((h->def_dynamic |
| 2128 | && !h->def_regular) |
| 2129 | || (htab->root.dynamic_sections_created |
| 2130 | && (h->root.type == bfd_link_hash_undefweak |
| 2131 | || h->root.type == bfd_link_hash_undefined)))) |
| 2132 | { |
| 2133 | /* Make sure this symbol is output as a dynamic symbol. |
| 2134 | Undefined weak syms won't yet be marked as dynamic. */ |
| 2135 | if (h->dynindx == -1 |
| 2136 | && !h->forced_local) |
| 2137 | { |
| 2138 | if (! bfd_elf_link_record_dynamic_symbol (info, h)) |
| 2139 | return FALSE; |
| 2140 | } |
| 2141 | |
| 2142 | /* If that succeeded, we know we'll be keeping all the |
| 2143 | relocs. */ |
| 2144 | if (h->dynindx != -1) |
| 2145 | goto keep; |
| 2146 | } |
| 2147 | |
| 2148 | eh->dyn_relocs = NULL; |
| 2149 | |
| 2150 | keep: ; |
| 2151 | } |
| 2152 | |
| 2153 | /* Finally, allocate space. */ |
| 2154 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2155 | { |
| 2156 | asection *sreloc = elf_section_data (p->sec)->sreloc; |
| 2157 | sreloc->size += p->count * sizeof (Elf32_External_Rela); |
| 2158 | } |
| 2159 | |
| 2160 | return TRUE; |
| 2161 | } |
| 2162 | |
| 2163 | /* Find any dynamic relocs that apply to read-only sections. */ |
| 2164 | |
| 2165 | static bfd_boolean |
| 2166 | readonly_dynrelocs (struct elf_link_hash_entry *h, void * inf) |
| 2167 | { |
| 2168 | struct elf_m32r_link_hash_entry *eh; |
| 2169 | struct elf_m32r_dyn_relocs *p; |
| 2170 | |
| 2171 | if (h->root.type == bfd_link_hash_warning) |
| 2172 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2173 | |
| 2174 | eh = (struct elf_m32r_link_hash_entry *) h; |
| 2175 | for (p = eh->dyn_relocs; p != NULL; p = p->next) |
| 2176 | { |
| 2177 | asection *s = p->sec->output_section; |
| 2178 | |
| 2179 | if (s != NULL && (s->flags & SEC_READONLY) != 0) |
| 2180 | { |
| 2181 | struct bfd_link_info *info = (struct bfd_link_info *) inf; |
| 2182 | |
| 2183 | info->flags |= DF_TEXTREL; |
| 2184 | |
| 2185 | /* Not an error, just cut short the traversal. */ |
| 2186 | return FALSE; |
| 2187 | } |
| 2188 | } |
| 2189 | return TRUE; |
| 2190 | } |
| 2191 | |
| 2192 | /* Set the sizes of the dynamic sections. */ |
| 2193 | |
| 2194 | static bfd_boolean |
| 2195 | m32r_elf_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2196 | struct bfd_link_info *info) |
| 2197 | { |
| 2198 | struct elf_m32r_link_hash_table *htab; |
| 2199 | bfd *dynobj; |
| 2200 | asection *s; |
| 2201 | bfd_boolean relocs; |
| 2202 | bfd *ibfd; |
| 2203 | |
| 2204 | #ifdef DEBUG_PIC |
| 2205 | printf ("m32r_elf_size_dynamic_sections()\n"); |
| 2206 | #endif |
| 2207 | |
| 2208 | htab = m32r_elf_hash_table (info); |
| 2209 | dynobj = htab->root.dynobj; |
| 2210 | BFD_ASSERT (dynobj != NULL); |
| 2211 | |
| 2212 | if (htab->root.dynamic_sections_created) |
| 2213 | { |
| 2214 | /* Set the contents of the .interp section to the interpreter. */ |
| 2215 | if (info->executable) |
| 2216 | { |
| 2217 | s = bfd_get_section_by_name (dynobj, ".interp"); |
| 2218 | BFD_ASSERT (s != NULL); |
| 2219 | s->size = sizeof ELF_DYNAMIC_INTERPRETER; |
| 2220 | s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER; |
| 2221 | } |
| 2222 | } |
| 2223 | |
| 2224 | /* Set up .got offsets for local syms, and space for local dynamic |
| 2225 | relocs. */ |
| 2226 | for (ibfd = info->input_bfds; ibfd != NULL; ibfd = ibfd->link_next) |
| 2227 | { |
| 2228 | bfd_signed_vma *local_got; |
| 2229 | bfd_signed_vma *end_local_got; |
| 2230 | bfd_size_type locsymcount; |
| 2231 | Elf_Internal_Shdr *symtab_hdr; |
| 2232 | asection *srel; |
| 2233 | |
| 2234 | if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour) |
| 2235 | continue; |
| 2236 | |
| 2237 | for (s = ibfd->sections; s != NULL; s = s->next) |
| 2238 | { |
| 2239 | struct elf_m32r_dyn_relocs *p; |
| 2240 | |
| 2241 | for (p = ((struct elf_m32r_dyn_relocs *) |
| 2242 | elf_section_data (s)->local_dynrel); |
| 2243 | p != NULL; |
| 2244 | p = p->next) |
| 2245 | { |
| 2246 | if (! bfd_is_abs_section (p->sec) |
| 2247 | && bfd_is_abs_section (p->sec->output_section)) |
| 2248 | { |
| 2249 | /* Input section has been discarded, either because |
| 2250 | it is a copy of a linkonce section or due to |
| 2251 | linker script /DISCARD/, so we'll be discarding |
| 2252 | the relocs too. */ |
| 2253 | } |
| 2254 | else if (p->count != 0) |
| 2255 | { |
| 2256 | srel = elf_section_data (p->sec)->sreloc; |
| 2257 | srel->size += p->count * sizeof (Elf32_External_Rela); |
| 2258 | if ((p->sec->output_section->flags & SEC_READONLY) != 0) |
| 2259 | info->flags |= DF_TEXTREL; |
| 2260 | } |
| 2261 | } |
| 2262 | } |
| 2263 | |
| 2264 | local_got = elf_local_got_refcounts (ibfd); |
| 2265 | if (!local_got) |
| 2266 | continue; |
| 2267 | |
| 2268 | symtab_hdr = &elf_tdata (ibfd)->symtab_hdr; |
| 2269 | locsymcount = symtab_hdr->sh_info; |
| 2270 | end_local_got = local_got + locsymcount; |
| 2271 | s = htab->sgot; |
| 2272 | srel = htab->srelgot; |
| 2273 | for (; local_got < end_local_got; ++local_got) |
| 2274 | { |
| 2275 | if (*local_got > 0) |
| 2276 | { |
| 2277 | *local_got = s->size; |
| 2278 | s->size += 4; |
| 2279 | if (info->shared) |
| 2280 | srel->size += sizeof (Elf32_External_Rela); |
| 2281 | } |
| 2282 | else |
| 2283 | *local_got = (bfd_vma) -1; |
| 2284 | } |
| 2285 | } |
| 2286 | |
| 2287 | /* Allocate global sym .plt and .got entries, and space for global |
| 2288 | sym dynamic relocs. */ |
| 2289 | elf_link_hash_traverse (&htab->root, allocate_dynrelocs, info); |
| 2290 | |
| 2291 | /* We now have determined the sizes of the various dynamic sections. |
| 2292 | Allocate memory for them. */ |
| 2293 | relocs = FALSE; |
| 2294 | for (s = dynobj->sections; s != NULL; s = s->next) |
| 2295 | { |
| 2296 | if ((s->flags & SEC_LINKER_CREATED) == 0) |
| 2297 | continue; |
| 2298 | |
| 2299 | if (s == htab->splt |
| 2300 | || s == htab->sgot |
| 2301 | || s == htab->sgotplt |
| 2302 | || s == htab->sdynbss) |
| 2303 | { |
| 2304 | /* Strip this section if we don't need it; see the |
| 2305 | comment below. */ |
| 2306 | } |
| 2307 | else if (CONST_STRNEQ (bfd_get_section_name (dynobj, s), ".rela")) |
| 2308 | { |
| 2309 | if (s->size != 0 && s != htab->srelplt) |
| 2310 | relocs = TRUE; |
| 2311 | |
| 2312 | /* We use the reloc_count field as a counter if we need |
| 2313 | to copy relocs into the output file. */ |
| 2314 | s->reloc_count = 0; |
| 2315 | } |
| 2316 | else |
| 2317 | /* It's not one of our sections, so don't allocate space. */ |
| 2318 | continue; |
| 2319 | |
| 2320 | if (s->size == 0) |
| 2321 | { |
| 2322 | /* If we don't need this section, strip it from the |
| 2323 | output file. This is mostly to handle .rela.bss and |
| 2324 | .rela.plt. We must create both sections in |
| 2325 | create_dynamic_sections, because they must be created |
| 2326 | before the linker maps input sections to output |
| 2327 | sections. The linker does that before |
| 2328 | adjust_dynamic_symbol is called, and it is that |
| 2329 | function which decides whether anything needs to go |
| 2330 | into these sections. */ |
| 2331 | s->flags |= SEC_EXCLUDE; |
| 2332 | continue; |
| 2333 | } |
| 2334 | |
| 2335 | if ((s->flags & SEC_HAS_CONTENTS) == 0) |
| 2336 | continue; |
| 2337 | |
| 2338 | /* Allocate memory for the section contents. We use bfd_zalloc |
| 2339 | here in case unused entries are not reclaimed before the |
| 2340 | section's contents are written out. This should not happen, |
| 2341 | but this way if it does, we get a R_M32R_NONE reloc instead |
| 2342 | of garbage. */ |
| 2343 | s->contents = bfd_zalloc (dynobj, s->size); |
| 2344 | if (s->contents == NULL) |
| 2345 | return FALSE; |
| 2346 | } |
| 2347 | |
| 2348 | if (htab->root.dynamic_sections_created) |
| 2349 | { |
| 2350 | /* Add some entries to the .dynamic section. We fill in the |
| 2351 | values later, in m32r_elf_finish_dynamic_sections, but we |
| 2352 | must add the entries now so that we get the correct size for |
| 2353 | the .dynamic section. The DT_DEBUG entry is filled in by the |
| 2354 | dynamic linker and used by the debugger. */ |
| 2355 | #define add_dynamic_entry(TAG, VAL) \ |
| 2356 | _bfd_elf_add_dynamic_entry (info, TAG, VAL) |
| 2357 | |
| 2358 | if (info->executable) |
| 2359 | { |
| 2360 | if (! add_dynamic_entry (DT_DEBUG, 0)) |
| 2361 | return FALSE; |
| 2362 | } |
| 2363 | |
| 2364 | if (htab->splt->size != 0) |
| 2365 | { |
| 2366 | if (! add_dynamic_entry (DT_PLTGOT, 0) |
| 2367 | || ! add_dynamic_entry (DT_PLTRELSZ, 0) |
| 2368 | || ! add_dynamic_entry (DT_PLTREL, DT_RELA) |
| 2369 | || ! add_dynamic_entry (DT_JMPREL, 0)) |
| 2370 | return FALSE; |
| 2371 | } |
| 2372 | |
| 2373 | if (relocs) |
| 2374 | { |
| 2375 | if (! add_dynamic_entry (DT_RELA, 0) |
| 2376 | || ! add_dynamic_entry (DT_RELASZ, 0) |
| 2377 | || ! add_dynamic_entry (DT_RELAENT, |
| 2378 | sizeof (Elf32_External_Rela))) |
| 2379 | return FALSE; |
| 2380 | |
| 2381 | /* If any dynamic relocs apply to a read-only section, |
| 2382 | then we need a DT_TEXTREL entry. */ |
| 2383 | if ((info->flags & DF_TEXTREL) == 0) |
| 2384 | elf_link_hash_traverse (&htab->root, readonly_dynrelocs, |
| 2385 | info); |
| 2386 | |
| 2387 | if ((info->flags & DF_TEXTREL) != 0) |
| 2388 | { |
| 2389 | if (! add_dynamic_entry (DT_TEXTREL, 0)) |
| 2390 | return FALSE; |
| 2391 | } |
| 2392 | } |
| 2393 | } |
| 2394 | #undef add_dynamic_entry |
| 2395 | |
| 2396 | return TRUE; |
| 2397 | } |
| 2398 | |
| 2399 | /* Relocate an M32R/D ELF section. |
| 2400 | There is some attempt to make this function usable for many architectures, |
| 2401 | both for RELA and REL type relocs, if only to serve as a learning tool. |
| 2402 | |
| 2403 | The RELOCATE_SECTION function is called by the new ELF backend linker |
| 2404 | to handle the relocations for a section. |
| 2405 | |
| 2406 | The relocs are always passed as Rela structures; if the section |
| 2407 | actually uses Rel structures, the r_addend field will always be |
| 2408 | zero. |
| 2409 | |
| 2410 | This function is responsible for adjust the section contents as |
| 2411 | necessary, and (if using Rela relocs and generating a |
| 2412 | relocatable output file) adjusting the reloc addend as |
| 2413 | necessary. |
| 2414 | |
| 2415 | This function does not have to worry about setting the reloc |
| 2416 | address or the reloc symbol index. |
| 2417 | |
| 2418 | LOCAL_SYMS is a pointer to the swapped in local symbols. |
| 2419 | |
| 2420 | LOCAL_SECTIONS is an array giving the section in the input file |
| 2421 | corresponding to the st_shndx field of each local symbol. |
| 2422 | |
| 2423 | The global hash table entry for the global symbols can be found |
| 2424 | via elf_sym_hashes (input_bfd). |
| 2425 | |
| 2426 | When generating relocatable output, this function must handle |
| 2427 | STB_LOCAL/STT_SECTION symbols specially. The output symbol is |
| 2428 | going to be the section symbol corresponding to the output |
| 2429 | section, which means that the addend must be adjusted |
| 2430 | accordingly. */ |
| 2431 | |
| 2432 | static bfd_boolean |
| 2433 | m32r_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED, |
| 2434 | struct bfd_link_info *info, |
| 2435 | bfd *input_bfd, |
| 2436 | asection *input_section, |
| 2437 | bfd_byte *contents, |
| 2438 | Elf_Internal_Rela *relocs, |
| 2439 | Elf_Internal_Sym *local_syms, |
| 2440 | asection **local_sections) |
| 2441 | { |
| 2442 | Elf_Internal_Shdr *symtab_hdr = &elf_tdata (input_bfd)->symtab_hdr; |
| 2443 | struct elf_link_hash_entry **sym_hashes = elf_sym_hashes (input_bfd); |
| 2444 | Elf_Internal_Rela *rel, *relend; |
| 2445 | /* Assume success. */ |
| 2446 | bfd_boolean ret = TRUE; |
| 2447 | |
| 2448 | struct elf_m32r_link_hash_table *htab = m32r_elf_hash_table (info); |
| 2449 | bfd *dynobj; |
| 2450 | bfd_vma *local_got_offsets; |
| 2451 | asection *sgot, *splt, *sreloc; |
| 2452 | bfd_vma high_address = bfd_get_section_limit (input_bfd, input_section); |
| 2453 | |
| 2454 | dynobj = htab->root.dynobj; |
| 2455 | local_got_offsets = elf_local_got_offsets (input_bfd); |
| 2456 | |
| 2457 | sgot = htab->sgot; |
| 2458 | splt = htab->splt; |
| 2459 | sreloc = NULL; |
| 2460 | |
| 2461 | rel = relocs; |
| 2462 | relend = relocs + input_section->reloc_count; |
| 2463 | for (; rel < relend; rel++) |
| 2464 | { |
| 2465 | int r_type; |
| 2466 | reloc_howto_type *howto; |
| 2467 | unsigned long r_symndx; |
| 2468 | struct elf_link_hash_entry *h; |
| 2469 | /* We can't modify r_addend here as elf_link_input_bfd has an assert to |
| 2470 | ensure it's zero (we use REL relocs, not RELA). Therefore this |
| 2471 | should be assigning zero to `addend', but for clarity we use |
| 2472 | `r_addend'. */ |
| 2473 | bfd_vma addend = rel->r_addend; |
| 2474 | bfd_vma offset = rel->r_offset; |
| 2475 | bfd_vma relocation; |
| 2476 | Elf_Internal_Sym *sym; |
| 2477 | asection *sec; |
| 2478 | const char *sym_name; |
| 2479 | bfd_reloc_status_type r; |
| 2480 | const char *errmsg = NULL; |
| 2481 | bfd_boolean use_rel = FALSE; |
| 2482 | |
| 2483 | h = NULL; |
| 2484 | r_type = ELF32_R_TYPE (rel->r_info); |
| 2485 | if (r_type < 0 || r_type >= (int) R_M32R_max) |
| 2486 | { |
| 2487 | (*_bfd_error_handler) (_("%B: unknown relocation type %d"), |
| 2488 | input_bfd, |
| 2489 | (int) r_type); |
| 2490 | bfd_set_error (bfd_error_bad_value); |
| 2491 | ret = FALSE; |
| 2492 | continue; |
| 2493 | } |
| 2494 | |
| 2495 | if ( r_type == R_M32R_GNU_VTENTRY |
| 2496 | || r_type == R_M32R_GNU_VTINHERIT |
| 2497 | || r_type == R_M32R_NONE |
| 2498 | || r_type == R_M32R_RELA_GNU_VTENTRY |
| 2499 | || r_type == R_M32R_RELA_GNU_VTINHERIT) |
| 2500 | continue; |
| 2501 | |
| 2502 | if (r_type <= R_M32R_GNU_VTENTRY) |
| 2503 | use_rel = TRUE; |
| 2504 | |
| 2505 | howto = m32r_elf_howto_table + r_type; |
| 2506 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 2507 | |
| 2508 | sym = NULL; |
| 2509 | sec = NULL; |
| 2510 | h = NULL; |
| 2511 | |
| 2512 | if (r_symndx < symtab_hdr->sh_info) |
| 2513 | { |
| 2514 | /* Local symbol. */ |
| 2515 | sym = local_syms + r_symndx; |
| 2516 | sec = local_sections[r_symndx]; |
| 2517 | sym_name = "<local symbol>"; |
| 2518 | |
| 2519 | if (!use_rel) |
| 2520 | { |
| 2521 | relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel); |
| 2522 | addend = rel->r_addend; |
| 2523 | } |
| 2524 | else |
| 2525 | { |
| 2526 | relocation = (sec->output_section->vma |
| 2527 | + sec->output_offset |
| 2528 | + sym->st_value); |
| 2529 | } |
| 2530 | } |
| 2531 | else |
| 2532 | { |
| 2533 | /* External symbol. */ |
| 2534 | relocation = 0; |
| 2535 | |
| 2536 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 2537 | while (h->root.type == bfd_link_hash_indirect |
| 2538 | || h->root.type == bfd_link_hash_warning) |
| 2539 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 2540 | sym_name = h->root.root.string; |
| 2541 | |
| 2542 | if (h->root.type == bfd_link_hash_defined |
| 2543 | || h->root.type == bfd_link_hash_defweak) |
| 2544 | { |
| 2545 | bfd_boolean dyn; |
| 2546 | sec = h->root.u.def.section; |
| 2547 | |
| 2548 | dyn = htab->root.dynamic_sections_created; |
| 2549 | sec = h->root.u.def.section; |
| 2550 | if (r_type == R_M32R_GOTPC24 |
| 2551 | || (r_type == R_M32R_GOTPC_HI_ULO |
| 2552 | || r_type == R_M32R_GOTPC_HI_SLO |
| 2553 | || r_type == R_M32R_GOTPC_LO) |
| 2554 | || (r_type == R_M32R_26_PLTREL |
| 2555 | && h->plt.offset != (bfd_vma) -1) |
| 2556 | || ((r_type == R_M32R_GOT24 |
| 2557 | || r_type == R_M32R_GOT16_HI_ULO |
| 2558 | || r_type == R_M32R_GOT16_HI_SLO |
| 2559 | || r_type == R_M32R_GOT16_LO) |
| 2560 | && WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, |
| 2561 | info->shared, h) |
| 2562 | && (! info->shared |
| 2563 | || (! info->symbolic && h->dynindx != -1) |
| 2564 | || !h->def_regular)) |
| 2565 | || (info->shared |
| 2566 | && ((! info->symbolic && h->dynindx != -1) |
| 2567 | || !h->def_regular) |
| 2568 | && (((r_type == R_M32R_16_RELA |
| 2569 | || r_type == R_M32R_32_RELA |
| 2570 | || r_type == R_M32R_24_RELA |
| 2571 | || r_type == R_M32R_HI16_ULO_RELA |
| 2572 | || r_type == R_M32R_HI16_SLO_RELA |
| 2573 | || r_type == R_M32R_LO16_RELA) |
| 2574 | && !h->forced_local) |
| 2575 | || r_type == R_M32R_REL32 |
| 2576 | || r_type == R_M32R_10_PCREL_RELA |
| 2577 | || r_type == R_M32R_18_PCREL_RELA |
| 2578 | || r_type == R_M32R_26_PCREL_RELA) |
| 2579 | && ((input_section->flags & SEC_ALLOC) != 0 |
| 2580 | /* DWARF will emit R_M32R_16(24,32) relocations |
| 2581 | in its sections against symbols defined |
| 2582 | externally in shared libraries. We can't do |
| 2583 | anything with them here. */ |
| 2584 | || ((input_section->flags & SEC_DEBUGGING) != 0 |
| 2585 | && h->def_dynamic)))) |
| 2586 | { |
| 2587 | /* In these cases, we don't need the relocation |
| 2588 | value. We check specially because in some |
| 2589 | obscure cases sec->output_section will be NULL. */ |
| 2590 | } |
| 2591 | else if (sec->output_section != NULL) |
| 2592 | relocation = (h->root.u.def.value |
| 2593 | + sec->output_section->vma |
| 2594 | + sec->output_offset); |
| 2595 | else if (!info->relocatable) |
| 2596 | { |
| 2597 | (*_bfd_error_handler) |
| 2598 | (_("%B(%A+0x%lx): unresolvable %s relocation against symbol `%s'"), |
| 2599 | input_bfd, |
| 2600 | input_section, |
| 2601 | (long) rel->r_offset, |
| 2602 | howto->name, |
| 2603 | h->root.root.string); |
| 2604 | } |
| 2605 | } |
| 2606 | else if (h->root.type == bfd_link_hash_undefweak) |
| 2607 | ; |
| 2608 | else if (info->unresolved_syms_in_objects == RM_IGNORE |
| 2609 | && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT) |
| 2610 | ; |
| 2611 | else if (!info->relocatable) |
| 2612 | { |
| 2613 | if (! ((*info->callbacks->undefined_symbol) |
| 2614 | (info, h->root.root.string, input_bfd, |
| 2615 | input_section, offset, |
| 2616 | (info->unresolved_syms_in_objects == RM_GENERATE_ERROR |
| 2617 | || ELF_ST_VISIBILITY (h->other))))) |
| 2618 | return FALSE; |
| 2619 | } |
| 2620 | } |
| 2621 | |
| 2622 | if (sec != NULL && elf_discarded_section (sec)) |
| 2623 | { |
| 2624 | /* For relocs against symbols from removed linkonce sections, |
| 2625 | or sections discarded by a linker script, we just want the |
| 2626 | section contents zeroed. Avoid any special processing. */ |
| 2627 | _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset); |
| 2628 | rel->r_info = 0; |
| 2629 | rel->r_addend = 0; |
| 2630 | continue; |
| 2631 | } |
| 2632 | |
| 2633 | if (info->relocatable && !use_rel) |
| 2634 | { |
| 2635 | /* This is a relocatable link. We don't have to change |
| 2636 | anything, unless the reloc is against a section symbol, |
| 2637 | in which case we have to adjust according to where the |
| 2638 | section symbol winds up in the output section. */ |
| 2639 | if (sym != NULL && ELF_ST_TYPE (sym->st_info) == STT_SECTION) |
| 2640 | rel->r_addend += sec->output_offset; |
| 2641 | continue; |
| 2642 | } |
| 2643 | |
| 2644 | if (info->relocatable && use_rel) |
| 2645 | { |
| 2646 | /* This is a relocatable link. We don't have to change |
| 2647 | anything, unless the reloc is against a section symbol, |
| 2648 | in which case we have to adjust according to where the |
| 2649 | section symbol winds up in the output section. */ |
| 2650 | if (sym == NULL || ELF_ST_TYPE (sym->st_info) != STT_SECTION) |
| 2651 | continue; |
| 2652 | |
| 2653 | addend += sec->output_offset; |
| 2654 | |
| 2655 | /* If partial_inplace, we need to store any additional addend |
| 2656 | back in the section. */ |
| 2657 | if (! howto->partial_inplace) |
| 2658 | continue; |
| 2659 | /* ??? Here is a nice place to call a special_function |
| 2660 | like handler. */ |
| 2661 | if (r_type != R_M32R_HI16_SLO && r_type != R_M32R_HI16_ULO) |
| 2662 | r = _bfd_relocate_contents (howto, input_bfd, |
| 2663 | addend, contents + offset); |
| 2664 | else |
| 2665 | { |
| 2666 | Elf_Internal_Rela *lorel; |
| 2667 | |
| 2668 | /* We allow an arbitrary number of HI16 relocs before the |
| 2669 | LO16 reloc. This permits gcc to emit the HI and LO relocs |
| 2670 | itself. */ |
| 2671 | for (lorel = rel + 1; |
| 2672 | (lorel < relend |
| 2673 | && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO |
| 2674 | || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); |
| 2675 | lorel++) |
| 2676 | continue; |
| 2677 | if (lorel < relend |
| 2678 | && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) |
| 2679 | { |
| 2680 | m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, |
| 2681 | contents, addend); |
| 2682 | r = bfd_reloc_ok; |
| 2683 | } |
| 2684 | else |
| 2685 | r = _bfd_relocate_contents (howto, input_bfd, |
| 2686 | addend, contents + offset); |
| 2687 | } |
| 2688 | } |
| 2689 | else |
| 2690 | { |
| 2691 | /* Sanity check the address. */ |
| 2692 | if (offset > high_address) |
| 2693 | { |
| 2694 | r = bfd_reloc_outofrange; |
| 2695 | goto check_reloc; |
| 2696 | } |
| 2697 | |
| 2698 | switch ((int) r_type) |
| 2699 | { |
| 2700 | case R_M32R_GOTOFF: |
| 2701 | /* Relocation is relative to the start of the global offset |
| 2702 | table (for ld24 rx, #uimm24). eg access at label+addend |
| 2703 | |
| 2704 | ld24 rx. #label@GOTOFF + addend |
| 2705 | sub rx, r12. */ |
| 2706 | |
| 2707 | BFD_ASSERT (sgot != NULL); |
| 2708 | |
| 2709 | relocation = -(relocation - sgot->output_section->vma); |
| 2710 | rel->r_addend = -rel->r_addend; |
| 2711 | break; |
| 2712 | |
| 2713 | case R_M32R_GOTOFF_HI_ULO: |
| 2714 | case R_M32R_GOTOFF_HI_SLO: |
| 2715 | case R_M32R_GOTOFF_LO: |
| 2716 | BFD_ASSERT (sgot != NULL); |
| 2717 | |
| 2718 | relocation -= sgot->output_section->vma; |
| 2719 | |
| 2720 | if ((r_type == R_M32R_GOTOFF_HI_SLO) |
| 2721 | && ((relocation + rel->r_addend) & 0x8000)) |
| 2722 | rel->r_addend += 0x10000; |
| 2723 | break; |
| 2724 | |
| 2725 | case R_M32R_GOTPC24: |
| 2726 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation |
| 2727 | ld24 rx,#_GLOBAL_OFFSET_TABLE_ |
| 2728 | */ |
| 2729 | relocation = sgot->output_section->vma; |
| 2730 | break; |
| 2731 | |
| 2732 | case R_M32R_GOTPC_HI_ULO: |
| 2733 | case R_M32R_GOTPC_HI_SLO: |
| 2734 | case R_M32R_GOTPC_LO: |
| 2735 | { |
| 2736 | /* .got(_GLOBAL_OFFSET_TABLE_) - pc relocation |
| 2737 | bl .+4 |
| 2738 | seth rx,#high(_GLOBAL_OFFSET_TABLE_) |
| 2739 | or3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) |
| 2740 | or |
| 2741 | bl .+4 |
| 2742 | seth rx,#shigh(_GLOBAL_OFFSET_TABLE_) |
| 2743 | add3 rx,rx,#low(_GLOBAL_OFFSET_TABLE_ +4) |
| 2744 | */ |
| 2745 | relocation = sgot->output_section->vma; |
| 2746 | relocation -= (input_section->output_section->vma |
| 2747 | + input_section->output_offset |
| 2748 | + rel->r_offset); |
| 2749 | if ((r_type == R_M32R_GOTPC_HI_SLO) |
| 2750 | && ((relocation + rel->r_addend) & 0x8000)) |
| 2751 | rel->r_addend += 0x10000; |
| 2752 | |
| 2753 | break; |
| 2754 | } |
| 2755 | case R_M32R_GOT16_HI_ULO: |
| 2756 | case R_M32R_GOT16_HI_SLO: |
| 2757 | case R_M32R_GOT16_LO: |
| 2758 | /* Fall through. */ |
| 2759 | case R_M32R_GOT24: |
| 2760 | /* Relocation is to the entry for this symbol in the global |
| 2761 | offset table. */ |
| 2762 | BFD_ASSERT (sgot != NULL); |
| 2763 | |
| 2764 | if (h != NULL) |
| 2765 | { |
| 2766 | bfd_boolean dyn; |
| 2767 | bfd_vma off; |
| 2768 | |
| 2769 | off = h->got.offset; |
| 2770 | BFD_ASSERT (off != (bfd_vma) -1); |
| 2771 | |
| 2772 | dyn = htab->root.dynamic_sections_created; |
| 2773 | if (! WILL_CALL_FINISH_DYNAMIC_SYMBOL (dyn, info->shared, h) |
| 2774 | || (info->shared |
| 2775 | && (info->symbolic |
| 2776 | || h->dynindx == -1 |
| 2777 | || h->forced_local) |
| 2778 | && h->def_regular)) |
| 2779 | { |
| 2780 | /* This is actually a static link, or it is a |
| 2781 | -Bsymbolic link and the symbol is defined |
| 2782 | locally, or the symbol was forced to be local |
| 2783 | because of a version file. We must initialize |
| 2784 | this entry in the global offset table. Since the |
| 2785 | offset must always be a multiple of 4, we use the |
| 2786 | least significant bit to record whether we have |
| 2787 | initialized it already. |
| 2788 | |
| 2789 | When doing a dynamic link, we create a .rela.got |
| 2790 | relocation entry to initialize the value. This |
| 2791 | is done in the finish_dynamic_symbol routine. */ |
| 2792 | if ((off & 1) != 0) |
| 2793 | off &= ~1; |
| 2794 | else |
| 2795 | { |
| 2796 | bfd_put_32 (output_bfd, relocation, |
| 2797 | sgot->contents + off); |
| 2798 | h->got.offset |= 1; |
| 2799 | } |
| 2800 | } |
| 2801 | |
| 2802 | relocation = sgot->output_offset + off; |
| 2803 | } |
| 2804 | else |
| 2805 | { |
| 2806 | bfd_vma off; |
| 2807 | bfd_byte *loc; |
| 2808 | |
| 2809 | BFD_ASSERT (local_got_offsets != NULL |
| 2810 | && local_got_offsets[r_symndx] != (bfd_vma) -1); |
| 2811 | |
| 2812 | off = local_got_offsets[r_symndx]; |
| 2813 | |
| 2814 | /* The offset must always be a multiple of 4. We use |
| 2815 | the least significant bit to record whether we have |
| 2816 | already processed this entry. */ |
| 2817 | if ((off & 1) != 0) |
| 2818 | off &= ~1; |
| 2819 | else |
| 2820 | { |
| 2821 | bfd_put_32 (output_bfd, relocation, sgot->contents + off); |
| 2822 | |
| 2823 | if (info->shared) |
| 2824 | { |
| 2825 | asection *srelgot; |
| 2826 | Elf_Internal_Rela outrel; |
| 2827 | |
| 2828 | /* We need to generate a R_M32R_RELATIVE reloc |
| 2829 | for the dynamic linker. */ |
| 2830 | srelgot = bfd_get_section_by_name (dynobj, ".rela.got"); |
| 2831 | BFD_ASSERT (srelgot != NULL); |
| 2832 | |
| 2833 | outrel.r_offset = (sgot->output_section->vma |
| 2834 | + sgot->output_offset |
| 2835 | + off); |
| 2836 | outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); |
| 2837 | outrel.r_addend = relocation; |
| 2838 | loc = srelgot->contents; |
| 2839 | loc += srelgot->reloc_count * sizeof (Elf32_External_Rela); |
| 2840 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); |
| 2841 | ++srelgot->reloc_count; |
| 2842 | } |
| 2843 | |
| 2844 | local_got_offsets[r_symndx] |= 1; |
| 2845 | } |
| 2846 | |
| 2847 | relocation = sgot->output_offset + off; |
| 2848 | } |
| 2849 | if ((r_type == R_M32R_GOT16_HI_SLO) |
| 2850 | && ((relocation + rel->r_addend) & 0x8000)) |
| 2851 | rel->r_addend += 0x10000; |
| 2852 | |
| 2853 | break; |
| 2854 | |
| 2855 | case R_M32R_26_PLTREL: |
| 2856 | /* Relocation is to the entry for this symbol in the |
| 2857 | procedure linkage table. */ |
| 2858 | |
| 2859 | /* The native assembler will generate a 26_PLTREL reloc |
| 2860 | for a local symbol if you assemble a call from one |
| 2861 | section to another when using -K pic. */ |
| 2862 | if (h == NULL) |
| 2863 | break; |
| 2864 | |
| 2865 | if (h->forced_local) |
| 2866 | break; |
| 2867 | |
| 2868 | if (h->plt.offset == (bfd_vma) -1) |
| 2869 | /* We didn't make a PLT entry for this symbol. This |
| 2870 | happens when statically linking PIC code, or when |
| 2871 | using -Bsymbolic. */ |
| 2872 | break; |
| 2873 | |
| 2874 | relocation = (splt->output_section->vma |
| 2875 | + splt->output_offset |
| 2876 | + h->plt.offset); |
| 2877 | break; |
| 2878 | |
| 2879 | case R_M32R_HI16_SLO_RELA: |
| 2880 | if ((relocation + rel->r_addend) & 0x8000) |
| 2881 | rel->r_addend += 0x10000; |
| 2882 | /* Fall through. */ |
| 2883 | |
| 2884 | case R_M32R_16_RELA: |
| 2885 | case R_M32R_24_RELA: |
| 2886 | case R_M32R_32_RELA: |
| 2887 | case R_M32R_REL32: |
| 2888 | case R_M32R_10_PCREL_RELA: |
| 2889 | case R_M32R_18_PCREL_RELA: |
| 2890 | case R_M32R_26_PCREL_RELA: |
| 2891 | case R_M32R_HI16_ULO_RELA: |
| 2892 | case R_M32R_LO16_RELA: |
| 2893 | if (info->shared |
| 2894 | && r_symndx != 0 |
| 2895 | && (input_section->flags & SEC_ALLOC) != 0 |
| 2896 | && (( r_type != R_M32R_10_PCREL_RELA |
| 2897 | && r_type != R_M32R_18_PCREL_RELA |
| 2898 | && r_type != R_M32R_26_PCREL_RELA |
| 2899 | && r_type != R_M32R_REL32) |
| 2900 | || (h != NULL |
| 2901 | && h->dynindx != -1 |
| 2902 | && (! info->symbolic |
| 2903 | || !h->def_regular)))) |
| 2904 | { |
| 2905 | Elf_Internal_Rela outrel; |
| 2906 | bfd_boolean skip, relocate; |
| 2907 | bfd_byte *loc; |
| 2908 | |
| 2909 | /* When generating a shared object, these relocations |
| 2910 | are copied into the output file to be resolved at run |
| 2911 | time. */ |
| 2912 | if (sreloc == NULL) |
| 2913 | { |
| 2914 | sreloc = _bfd_elf_get_dynamic_reloc_section |
| 2915 | (input_bfd, input_section, /*rela?*/ TRUE); |
| 2916 | if (sreloc == NULL) |
| 2917 | return FALSE; |
| 2918 | } |
| 2919 | |
| 2920 | skip = FALSE; |
| 2921 | relocate = FALSE; |
| 2922 | |
| 2923 | outrel.r_offset = _bfd_elf_section_offset (output_bfd, |
| 2924 | info, |
| 2925 | input_section, |
| 2926 | rel->r_offset); |
| 2927 | if (outrel.r_offset == (bfd_vma) -1) |
| 2928 | skip = TRUE; |
| 2929 | else if (outrel.r_offset == (bfd_vma) -2) |
| 2930 | skip = relocate = TRUE; |
| 2931 | outrel.r_offset += (input_section->output_section->vma |
| 2932 | + input_section->output_offset); |
| 2933 | |
| 2934 | if (skip) |
| 2935 | memset (&outrel, 0, sizeof outrel); |
| 2936 | else if ( r_type == R_M32R_10_PCREL_RELA |
| 2937 | || r_type == R_M32R_18_PCREL_RELA |
| 2938 | || r_type == R_M32R_26_PCREL_RELA |
| 2939 | || r_type == R_M32R_REL32) |
| 2940 | { |
| 2941 | BFD_ASSERT (h != NULL && h->dynindx != -1); |
| 2942 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 2943 | outrel.r_addend = rel->r_addend; |
| 2944 | } |
| 2945 | else |
| 2946 | { |
| 2947 | /* h->dynindx may be -1 if this symbol was marked to |
| 2948 | become local. */ |
| 2949 | if (h == NULL |
| 2950 | || ((info->symbolic || h->dynindx == -1) |
| 2951 | && h->def_regular)) |
| 2952 | { |
| 2953 | relocate = TRUE; |
| 2954 | outrel.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); |
| 2955 | outrel.r_addend = relocation + rel->r_addend; |
| 2956 | } |
| 2957 | else |
| 2958 | { |
| 2959 | BFD_ASSERT (h->dynindx != -1); |
| 2960 | outrel.r_info = ELF32_R_INFO (h->dynindx, r_type); |
| 2961 | outrel.r_addend = relocation + rel->r_addend; |
| 2962 | } |
| 2963 | } |
| 2964 | |
| 2965 | loc = sreloc->contents; |
| 2966 | loc += sreloc->reloc_count * sizeof (Elf32_External_Rela); |
| 2967 | bfd_elf32_swap_reloca_out (output_bfd, &outrel,loc); |
| 2968 | ++sreloc->reloc_count; |
| 2969 | |
| 2970 | /* If this reloc is against an external symbol, we do |
| 2971 | not want to fiddle with the addend. Otherwise, we |
| 2972 | need to include the symbol value so that it becomes |
| 2973 | an addend for the dynamic reloc. */ |
| 2974 | if (! relocate) |
| 2975 | continue; |
| 2976 | break; |
| 2977 | } |
| 2978 | else if (r_type != R_M32R_10_PCREL_RELA) |
| 2979 | break; |
| 2980 | /* Fall through. */ |
| 2981 | |
| 2982 | case (int) R_M32R_10_PCREL : |
| 2983 | r = m32r_elf_do_10_pcrel_reloc (input_bfd, howto, input_section, |
| 2984 | contents, offset, |
| 2985 | sec, relocation, addend); |
| 2986 | goto check_reloc; |
| 2987 | |
| 2988 | case (int) R_M32R_HI16_SLO : |
| 2989 | case (int) R_M32R_HI16_ULO : |
| 2990 | { |
| 2991 | Elf_Internal_Rela *lorel; |
| 2992 | |
| 2993 | /* We allow an arbitrary number of HI16 relocs before the |
| 2994 | LO16 reloc. This permits gcc to emit the HI and LO relocs |
| 2995 | itself. */ |
| 2996 | for (lorel = rel + 1; |
| 2997 | (lorel < relend |
| 2998 | && (ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_SLO |
| 2999 | || ELF32_R_TYPE (lorel->r_info) == R_M32R_HI16_ULO)); |
| 3000 | lorel++) |
| 3001 | continue; |
| 3002 | if (lorel < relend |
| 3003 | && ELF32_R_TYPE (lorel->r_info) == R_M32R_LO16) |
| 3004 | { |
| 3005 | m32r_elf_relocate_hi16 (input_bfd, r_type, rel, lorel, |
| 3006 | contents, relocation + addend); |
| 3007 | r = bfd_reloc_ok; |
| 3008 | } |
| 3009 | else |
| 3010 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3011 | contents, offset, |
| 3012 | relocation, addend); |
| 3013 | } |
| 3014 | |
| 3015 | goto check_reloc; |
| 3016 | |
| 3017 | case (int) R_M32R_SDA16_RELA: |
| 3018 | case (int) R_M32R_SDA16 : |
| 3019 | { |
| 3020 | const char *name; |
| 3021 | |
| 3022 | BFD_ASSERT (sec != NULL); |
| 3023 | name = bfd_get_section_name (abfd, sec); |
| 3024 | |
| 3025 | if ( strcmp (name, ".sdata") == 0 |
| 3026 | || strcmp (name, ".sbss") == 0 |
| 3027 | || strcmp (name, ".scommon") == 0) |
| 3028 | { |
| 3029 | bfd_vma sda_base; |
| 3030 | bfd *out_bfd = sec->output_section->owner; |
| 3031 | |
| 3032 | r = m32r_elf_final_sda_base (out_bfd, info, |
| 3033 | &errmsg, |
| 3034 | &sda_base); |
| 3035 | if (r != bfd_reloc_ok) |
| 3036 | { |
| 3037 | ret = FALSE; |
| 3038 | goto check_reloc; |
| 3039 | } |
| 3040 | |
| 3041 | /* At this point `relocation' contains the object's |
| 3042 | address. */ |
| 3043 | relocation -= sda_base; |
| 3044 | /* Now it contains the offset from _SDA_BASE_. */ |
| 3045 | } |
| 3046 | else |
| 3047 | { |
| 3048 | (*_bfd_error_handler) |
| 3049 | (_("%B: The target (%s) of an %s relocation is in the wrong section (%A)"), |
| 3050 | input_bfd, |
| 3051 | sec, |
| 3052 | sym_name, |
| 3053 | m32r_elf_howto_table[(int) r_type].name); |
| 3054 | /*bfd_set_error (bfd_error_bad_value); ??? why? */ |
| 3055 | ret = FALSE; |
| 3056 | continue; |
| 3057 | } |
| 3058 | } |
| 3059 | /* Fall through. */ |
| 3060 | |
| 3061 | default : /* OLD_M32R_RELOC */ |
| 3062 | |
| 3063 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3064 | contents, offset, |
| 3065 | relocation, addend); |
| 3066 | goto check_reloc; |
| 3067 | } |
| 3068 | |
| 3069 | r = _bfd_final_link_relocate (howto, input_bfd, input_section, |
| 3070 | contents, rel->r_offset, |
| 3071 | relocation, rel->r_addend); |
| 3072 | |
| 3073 | } |
| 3074 | |
| 3075 | check_reloc: |
| 3076 | |
| 3077 | if (r != bfd_reloc_ok) |
| 3078 | { |
| 3079 | /* FIXME: This should be generic enough to go in a utility. */ |
| 3080 | const char *name; |
| 3081 | |
| 3082 | if (h != NULL) |
| 3083 | name = h->root.root.string; |
| 3084 | else |
| 3085 | { |
| 3086 | name = (bfd_elf_string_from_elf_section |
| 3087 | (input_bfd, symtab_hdr->sh_link, sym->st_name)); |
| 3088 | if (name == NULL || *name == '\0') |
| 3089 | name = bfd_section_name (input_bfd, sec); |
| 3090 | } |
| 3091 | |
| 3092 | if (errmsg != NULL) |
| 3093 | goto common_error; |
| 3094 | |
| 3095 | switch (r) |
| 3096 | { |
| 3097 | case bfd_reloc_overflow: |
| 3098 | if (! ((*info->callbacks->reloc_overflow) |
| 3099 | (info, (h ? &h->root : NULL), name, howto->name, |
| 3100 | (bfd_vma) 0, input_bfd, input_section, offset))) |
| 3101 | return FALSE; |
| 3102 | break; |
| 3103 | |
| 3104 | case bfd_reloc_undefined: |
| 3105 | if (! ((*info->callbacks->undefined_symbol) |
| 3106 | (info, name, input_bfd, input_section, |
| 3107 | offset, TRUE))) |
| 3108 | return FALSE; |
| 3109 | break; |
| 3110 | |
| 3111 | case bfd_reloc_outofrange: |
| 3112 | errmsg = _("internal error: out of range error"); |
| 3113 | goto common_error; |
| 3114 | |
| 3115 | case bfd_reloc_notsupported: |
| 3116 | errmsg = _("internal error: unsupported relocation error"); |
| 3117 | goto common_error; |
| 3118 | |
| 3119 | case bfd_reloc_dangerous: |
| 3120 | errmsg = _("internal error: dangerous error"); |
| 3121 | goto common_error; |
| 3122 | |
| 3123 | default: |
| 3124 | errmsg = _("internal error: unknown error"); |
| 3125 | /* fall through */ |
| 3126 | |
| 3127 | common_error: |
| 3128 | if (!((*info->callbacks->warning) |
| 3129 | (info, errmsg, name, input_bfd, input_section, |
| 3130 | offset))) |
| 3131 | return FALSE; |
| 3132 | break; |
| 3133 | } |
| 3134 | } |
| 3135 | } |
| 3136 | |
| 3137 | return ret; |
| 3138 | } |
| 3139 | |
| 3140 | /* Finish up dynamic symbol handling. We set the contents of various |
| 3141 | dynamic sections here. */ |
| 3142 | |
| 3143 | static bfd_boolean |
| 3144 | m32r_elf_finish_dynamic_symbol (bfd *output_bfd, |
| 3145 | struct bfd_link_info *info, |
| 3146 | struct elf_link_hash_entry *h, |
| 3147 | Elf_Internal_Sym *sym) |
| 3148 | { |
| 3149 | struct elf_m32r_link_hash_table *htab; |
| 3150 | bfd *dynobj; |
| 3151 | bfd_byte *loc; |
| 3152 | |
| 3153 | #ifdef DEBUG_PIC |
| 3154 | printf ("m32r_elf_finish_dynamic_symbol()\n"); |
| 3155 | #endif |
| 3156 | |
| 3157 | htab = m32r_elf_hash_table (info); |
| 3158 | dynobj = htab->root.dynobj; |
| 3159 | |
| 3160 | if (h->plt.offset != (bfd_vma) -1) |
| 3161 | { |
| 3162 | asection *splt; |
| 3163 | asection *sgot; |
| 3164 | asection *srela; |
| 3165 | |
| 3166 | bfd_vma plt_index; |
| 3167 | bfd_vma got_offset; |
| 3168 | Elf_Internal_Rela rela; |
| 3169 | |
| 3170 | /* This symbol has an entry in the procedure linkage table. Set |
| 3171 | it up. */ |
| 3172 | |
| 3173 | BFD_ASSERT (h->dynindx != -1); |
| 3174 | |
| 3175 | splt = htab->splt; |
| 3176 | sgot = htab->sgotplt; |
| 3177 | srela = htab->srelplt; |
| 3178 | BFD_ASSERT (splt != NULL && sgot != NULL && srela != NULL); |
| 3179 | |
| 3180 | /* Get the index in the procedure linkage table which |
| 3181 | corresponds to this symbol. This is the index of this symbol |
| 3182 | in all the symbols for which we are making plt entries. The |
| 3183 | first entry in the procedure linkage table is reserved. */ |
| 3184 | plt_index = h->plt.offset / PLT_ENTRY_SIZE - 1; |
| 3185 | |
| 3186 | /* Get the offset into the .got table of the entry that |
| 3187 | corresponds to this function. Each .got entry is 4 bytes. |
| 3188 | The first three are reserved. */ |
| 3189 | got_offset = (plt_index + 3) * 4; |
| 3190 | |
| 3191 | /* Fill in the entry in the procedure linkage table. */ |
| 3192 | if (! info->shared) |
| 3193 | { |
| 3194 | bfd_put_32 (output_bfd, |
| 3195 | (PLT_ENTRY_WORD0b |
| 3196 | + (((sgot->output_section->vma |
| 3197 | + sgot->output_offset |
| 3198 | + got_offset) >> 16) & 0xffff)), |
| 3199 | splt->contents + h->plt.offset); |
| 3200 | bfd_put_32 (output_bfd, |
| 3201 | (PLT_ENTRY_WORD1b |
| 3202 | + ((sgot->output_section->vma |
| 3203 | + sgot->output_offset |
| 3204 | + got_offset) & 0xffff)), |
| 3205 | splt->contents + h->plt.offset + 4); |
| 3206 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, |
| 3207 | splt->contents + h->plt.offset + 8); |
| 3208 | bfd_put_32 (output_bfd, |
| 3209 | (PLT_ENTRY_WORD3 |
| 3210 | + plt_index * sizeof (Elf32_External_Rela)), |
| 3211 | splt->contents + h->plt.offset + 12); |
| 3212 | bfd_put_32 (output_bfd, |
| 3213 | (PLT_ENTRY_WORD4 |
| 3214 | + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), |
| 3215 | splt->contents + h->plt.offset + 16); |
| 3216 | } |
| 3217 | else |
| 3218 | { |
| 3219 | bfd_put_32 (output_bfd, |
| 3220 | PLT_ENTRY_WORD0 + got_offset, |
| 3221 | splt->contents + h->plt.offset); |
| 3222 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD1, |
| 3223 | splt->contents + h->plt.offset + 4); |
| 3224 | bfd_put_32 (output_bfd, PLT_ENTRY_WORD2, |
| 3225 | splt->contents + h->plt.offset + 8); |
| 3226 | bfd_put_32 (output_bfd, |
| 3227 | (PLT_ENTRY_WORD3 |
| 3228 | + plt_index * sizeof (Elf32_External_Rela)), |
| 3229 | splt->contents + h->plt.offset + 12); |
| 3230 | bfd_put_32 (output_bfd, |
| 3231 | (PLT_ENTRY_WORD4 |
| 3232 | + (((unsigned int) ((- (h->plt.offset + 16)) >> 2)) & 0xffffff)), |
| 3233 | splt->contents + h->plt.offset + 16); |
| 3234 | } |
| 3235 | |
| 3236 | /* Fill in the entry in the global offset table. */ |
| 3237 | bfd_put_32 (output_bfd, |
| 3238 | (splt->output_section->vma |
| 3239 | + splt->output_offset |
| 3240 | + h->plt.offset |
| 3241 | + 12), /* same offset */ |
| 3242 | sgot->contents + got_offset); |
| 3243 | |
| 3244 | /* Fill in the entry in the .rela.plt section. */ |
| 3245 | rela.r_offset = (sgot->output_section->vma |
| 3246 | + sgot->output_offset |
| 3247 | + got_offset); |
| 3248 | rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_JMP_SLOT); |
| 3249 | rela.r_addend = 0; |
| 3250 | loc = srela->contents; |
| 3251 | loc += plt_index * sizeof (Elf32_External_Rela); |
| 3252 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3253 | |
| 3254 | if (!h->def_regular) |
| 3255 | { |
| 3256 | /* Mark the symbol as undefined, rather than as defined in |
| 3257 | the .plt section. Leave the value alone. */ |
| 3258 | sym->st_shndx = SHN_UNDEF; |
| 3259 | } |
| 3260 | } |
| 3261 | |
| 3262 | if (h->got.offset != (bfd_vma) -1) |
| 3263 | { |
| 3264 | asection *sgot; |
| 3265 | asection *srela; |
| 3266 | Elf_Internal_Rela rela; |
| 3267 | |
| 3268 | /* This symbol has an entry in the global offset table. Set it |
| 3269 | up. */ |
| 3270 | |
| 3271 | sgot = htab->sgot; |
| 3272 | srela = htab->srelgot; |
| 3273 | BFD_ASSERT (sgot != NULL && srela != NULL); |
| 3274 | |
| 3275 | rela.r_offset = (sgot->output_section->vma |
| 3276 | + sgot->output_offset |
| 3277 | + (h->got.offset &~ 1)); |
| 3278 | |
| 3279 | /* If this is a -Bsymbolic link, and the symbol is defined |
| 3280 | locally, we just want to emit a RELATIVE reloc. Likewise if |
| 3281 | the symbol was forced to be local because of a version file. |
| 3282 | The entry in the global offset table will already have been |
| 3283 | initialized in the relocate_section function. */ |
| 3284 | if (info->shared |
| 3285 | && (info->symbolic |
| 3286 | || h->dynindx == -1 |
| 3287 | || h->forced_local) |
| 3288 | && h->def_regular) |
| 3289 | { |
| 3290 | rela.r_info = ELF32_R_INFO (0, R_M32R_RELATIVE); |
| 3291 | rela.r_addend = (h->root.u.def.value |
| 3292 | + h->root.u.def.section->output_section->vma |
| 3293 | + h->root.u.def.section->output_offset); |
| 3294 | } |
| 3295 | else |
| 3296 | { |
| 3297 | BFD_ASSERT ((h->got.offset & 1) == 0); |
| 3298 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + h->got.offset); |
| 3299 | rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_GLOB_DAT); |
| 3300 | rela.r_addend = 0; |
| 3301 | } |
| 3302 | |
| 3303 | loc = srela->contents; |
| 3304 | loc += srela->reloc_count * sizeof (Elf32_External_Rela); |
| 3305 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3306 | ++srela->reloc_count; |
| 3307 | } |
| 3308 | |
| 3309 | if (h->needs_copy) |
| 3310 | { |
| 3311 | asection *s; |
| 3312 | Elf_Internal_Rela rela; |
| 3313 | |
| 3314 | /* This symbols needs a copy reloc. Set it up. */ |
| 3315 | |
| 3316 | BFD_ASSERT (h->dynindx != -1 |
| 3317 | && (h->root.type == bfd_link_hash_defined |
| 3318 | || h->root.type == bfd_link_hash_defweak)); |
| 3319 | |
| 3320 | s = bfd_get_section_by_name (h->root.u.def.section->owner, |
| 3321 | ".rela.bss"); |
| 3322 | BFD_ASSERT (s != NULL); |
| 3323 | |
| 3324 | rela.r_offset = (h->root.u.def.value |
| 3325 | + h->root.u.def.section->output_section->vma |
| 3326 | + h->root.u.def.section->output_offset); |
| 3327 | rela.r_info = ELF32_R_INFO (h->dynindx, R_M32R_COPY); |
| 3328 | rela.r_addend = 0; |
| 3329 | loc = s->contents; |
| 3330 | loc += s->reloc_count * sizeof (Elf32_External_Rela); |
| 3331 | bfd_elf32_swap_reloca_out (output_bfd, &rela, loc); |
| 3332 | ++s->reloc_count; |
| 3333 | } |
| 3334 | |
| 3335 | /* Mark some specially defined symbols as absolute. */ |
| 3336 | if (strcmp (h->root.root.string, "_DYNAMIC") == 0 |
| 3337 | || h == htab->root.hgot) |
| 3338 | sym->st_shndx = SHN_ABS; |
| 3339 | |
| 3340 | return TRUE; |
| 3341 | } |
| 3342 | |
| 3343 | |
| 3344 | /* Finish up the dynamic sections. */ |
| 3345 | |
| 3346 | static bfd_boolean |
| 3347 | m32r_elf_finish_dynamic_sections (bfd *output_bfd, |
| 3348 | struct bfd_link_info *info) |
| 3349 | { |
| 3350 | struct elf_m32r_link_hash_table *htab; |
| 3351 | bfd *dynobj; |
| 3352 | asection *sdyn; |
| 3353 | asection *sgot; |
| 3354 | |
| 3355 | #ifdef DEBUG_PIC |
| 3356 | printf ("m32r_elf_finish_dynamic_sections()\n"); |
| 3357 | #endif |
| 3358 | |
| 3359 | htab = m32r_elf_hash_table (info); |
| 3360 | dynobj = htab->root.dynobj; |
| 3361 | |
| 3362 | sgot = htab->sgotplt; |
| 3363 | sdyn = bfd_get_section_by_name (dynobj, ".dynamic"); |
| 3364 | |
| 3365 | if (htab->root.dynamic_sections_created) |
| 3366 | { |
| 3367 | asection *splt; |
| 3368 | Elf32_External_Dyn *dyncon, *dynconend; |
| 3369 | |
| 3370 | BFD_ASSERT (sgot != NULL && sdyn != NULL); |
| 3371 | |
| 3372 | dyncon = (Elf32_External_Dyn *) sdyn->contents; |
| 3373 | dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size); |
| 3374 | |
| 3375 | for (; dyncon < dynconend; dyncon++) |
| 3376 | { |
| 3377 | Elf_Internal_Dyn dyn; |
| 3378 | const char *name; |
| 3379 | asection *s; |
| 3380 | |
| 3381 | bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn); |
| 3382 | |
| 3383 | switch (dyn.d_tag) |
| 3384 | { |
| 3385 | default: |
| 3386 | break; |
| 3387 | |
| 3388 | case DT_PLTGOT: |
| 3389 | name = ".got"; |
| 3390 | s = htab->sgot->output_section; |
| 3391 | goto get_vma; |
| 3392 | case DT_JMPREL: |
| 3393 | name = ".rela.plt"; |
| 3394 | s = htab->srelplt->output_section; |
| 3395 | get_vma: |
| 3396 | BFD_ASSERT (s != NULL); |
| 3397 | dyn.d_un.d_ptr = s->vma; |
| 3398 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3399 | break; |
| 3400 | |
| 3401 | case DT_PLTRELSZ: |
| 3402 | s = htab->srelplt->output_section; |
| 3403 | BFD_ASSERT (s != NULL); |
| 3404 | dyn.d_un.d_val = s->size; |
| 3405 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3406 | break; |
| 3407 | |
| 3408 | case DT_RELASZ: |
| 3409 | /* My reading of the SVR4 ABI indicates that the |
| 3410 | procedure linkage table relocs (DT_JMPREL) should be |
| 3411 | included in the overall relocs (DT_RELA). This is |
| 3412 | what Solaris does. However, UnixWare can not handle |
| 3413 | that case. Therefore, we override the DT_RELASZ entry |
| 3414 | here to make it not include the JMPREL relocs. Since |
| 3415 | the linker script arranges for .rela.plt to follow all |
| 3416 | other relocation sections, we don't have to worry |
| 3417 | about changing the DT_RELA entry. */ |
| 3418 | if (htab->srelplt != NULL) |
| 3419 | { |
| 3420 | s = htab->srelplt->output_section; |
| 3421 | dyn.d_un.d_val -= s->size; |
| 3422 | } |
| 3423 | bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon); |
| 3424 | break; |
| 3425 | } |
| 3426 | } |
| 3427 | |
| 3428 | /* Fill in the first entry in the procedure linkage table. */ |
| 3429 | splt = htab->splt; |
| 3430 | if (splt && splt->size > 0) |
| 3431 | { |
| 3432 | if (info->shared) |
| 3433 | { |
| 3434 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD0, splt->contents); |
| 3435 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD1, splt->contents + 4); |
| 3436 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD2, splt->contents + 8); |
| 3437 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD3, splt->contents + 12); |
| 3438 | bfd_put_32 (output_bfd, PLT0_PIC_ENTRY_WORD4, splt->contents + 16); |
| 3439 | } |
| 3440 | else |
| 3441 | { |
| 3442 | unsigned long addr; |
| 3443 | /* addr = .got + 4 */ |
| 3444 | addr = sgot->output_section->vma + sgot->output_offset + 4; |
| 3445 | bfd_put_32 (output_bfd, |
| 3446 | PLT0_ENTRY_WORD0 | ((addr >> 16) & 0xffff), |
| 3447 | splt->contents); |
| 3448 | bfd_put_32 (output_bfd, |
| 3449 | PLT0_ENTRY_WORD1 | (addr & 0xffff), |
| 3450 | splt->contents + 4); |
| 3451 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD2, splt->contents + 8); |
| 3452 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD3, splt->contents + 12); |
| 3453 | bfd_put_32 (output_bfd, PLT0_ENTRY_WORD4, splt->contents + 16); |
| 3454 | } |
| 3455 | |
| 3456 | elf_section_data (splt->output_section)->this_hdr.sh_entsize = |
| 3457 | PLT_ENTRY_SIZE; |
| 3458 | } |
| 3459 | } |
| 3460 | |
| 3461 | /* Fill in the first three entries in the global offset table. */ |
| 3462 | if (sgot && sgot->size > 0) |
| 3463 | { |
| 3464 | if (sdyn == NULL) |
| 3465 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents); |
| 3466 | else |
| 3467 | bfd_put_32 (output_bfd, |
| 3468 | sdyn->output_section->vma + sdyn->output_offset, |
| 3469 | sgot->contents); |
| 3470 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4); |
| 3471 | bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8); |
| 3472 | |
| 3473 | elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4; |
| 3474 | } |
| 3475 | |
| 3476 | return TRUE; |
| 3477 | } |
| 3478 | |
| 3479 | \f |
| 3480 | /* Set the right machine number. */ |
| 3481 | |
| 3482 | static bfd_boolean |
| 3483 | m32r_elf_object_p (bfd *abfd) |
| 3484 | { |
| 3485 | switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) |
| 3486 | { |
| 3487 | default: |
| 3488 | case E_M32R_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r); break; |
| 3489 | case E_M32RX_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32rx); break; |
| 3490 | case E_M32R2_ARCH: (void) bfd_default_set_arch_mach (abfd, bfd_arch_m32r, bfd_mach_m32r2); break; |
| 3491 | } |
| 3492 | return TRUE; |
| 3493 | } |
| 3494 | |
| 3495 | /* Store the machine number in the flags field. */ |
| 3496 | |
| 3497 | static void |
| 3498 | m32r_elf_final_write_processing (bfd *abfd, |
| 3499 | bfd_boolean linker ATTRIBUTE_UNUSED) |
| 3500 | { |
| 3501 | unsigned long val; |
| 3502 | |
| 3503 | switch (bfd_get_mach (abfd)) |
| 3504 | { |
| 3505 | default: |
| 3506 | case bfd_mach_m32r: val = E_M32R_ARCH; break; |
| 3507 | case bfd_mach_m32rx: val = E_M32RX_ARCH; break; |
| 3508 | case bfd_mach_m32r2: val = E_M32R2_ARCH; break; |
| 3509 | } |
| 3510 | |
| 3511 | elf_elfheader (abfd)->e_flags &=~ EF_M32R_ARCH; |
| 3512 | elf_elfheader (abfd)->e_flags |= val; |
| 3513 | } |
| 3514 | |
| 3515 | /* Function to keep M32R specific file flags. */ |
| 3516 | |
| 3517 | static bfd_boolean |
| 3518 | m32r_elf_set_private_flags (bfd *abfd, flagword flags) |
| 3519 | { |
| 3520 | BFD_ASSERT (!elf_flags_init (abfd) |
| 3521 | || elf_elfheader (abfd)->e_flags == flags); |
| 3522 | |
| 3523 | elf_elfheader (abfd)->e_flags = flags; |
| 3524 | elf_flags_init (abfd) = TRUE; |
| 3525 | return TRUE; |
| 3526 | } |
| 3527 | |
| 3528 | /* Merge backend specific data from an object file to the output |
| 3529 | object file when linking. */ |
| 3530 | |
| 3531 | static bfd_boolean |
| 3532 | m32r_elf_merge_private_bfd_data (bfd *ibfd, bfd *obfd) |
| 3533 | { |
| 3534 | flagword out_flags; |
| 3535 | flagword in_flags; |
| 3536 | |
| 3537 | if ( bfd_get_flavour (ibfd) != bfd_target_elf_flavour |
| 3538 | || bfd_get_flavour (obfd) != bfd_target_elf_flavour) |
| 3539 | return TRUE; |
| 3540 | |
| 3541 | in_flags = elf_elfheader (ibfd)->e_flags; |
| 3542 | out_flags = elf_elfheader (obfd)->e_flags; |
| 3543 | |
| 3544 | if (! elf_flags_init (obfd)) |
| 3545 | { |
| 3546 | /* If the input is the default architecture then do not |
| 3547 | bother setting the flags for the output architecture, |
| 3548 | instead allow future merges to do this. If no future |
| 3549 | merges ever set these flags then they will retain their |
| 3550 | unitialised values, which surprise surprise, correspond |
| 3551 | to the default values. */ |
| 3552 | if (bfd_get_arch_info (ibfd)->the_default) |
| 3553 | return TRUE; |
| 3554 | |
| 3555 | elf_flags_init (obfd) = TRUE; |
| 3556 | elf_elfheader (obfd)->e_flags = in_flags; |
| 3557 | |
| 3558 | if (bfd_get_arch (obfd) == bfd_get_arch (ibfd) |
| 3559 | && bfd_get_arch_info (obfd)->the_default) |
| 3560 | return bfd_set_arch_mach (obfd, bfd_get_arch (ibfd), |
| 3561 | bfd_get_mach (ibfd)); |
| 3562 | |
| 3563 | return TRUE; |
| 3564 | } |
| 3565 | |
| 3566 | /* Check flag compatibility. */ |
| 3567 | if (in_flags == out_flags) |
| 3568 | return TRUE; |
| 3569 | |
| 3570 | if ((in_flags & EF_M32R_ARCH) != (out_flags & EF_M32R_ARCH)) |
| 3571 | { |
| 3572 | if ( ((in_flags & EF_M32R_ARCH) != E_M32R_ARCH) |
| 3573 | || ((out_flags & EF_M32R_ARCH) == E_M32R_ARCH) |
| 3574 | || ((in_flags & EF_M32R_ARCH) == E_M32R2_ARCH)) |
| 3575 | { |
| 3576 | (*_bfd_error_handler) |
| 3577 | (_("%B: Instruction set mismatch with previous modules"), ibfd); |
| 3578 | |
| 3579 | bfd_set_error (bfd_error_bad_value); |
| 3580 | return FALSE; |
| 3581 | } |
| 3582 | } |
| 3583 | |
| 3584 | return TRUE; |
| 3585 | } |
| 3586 | |
| 3587 | /* Display the flags field. */ |
| 3588 | |
| 3589 | static bfd_boolean |
| 3590 | m32r_elf_print_private_bfd_data (bfd *abfd, void * ptr) |
| 3591 | { |
| 3592 | FILE * file = (FILE *) ptr; |
| 3593 | |
| 3594 | BFD_ASSERT (abfd != NULL && ptr != NULL); |
| 3595 | |
| 3596 | _bfd_elf_print_private_bfd_data (abfd, ptr); |
| 3597 | |
| 3598 | fprintf (file, _("private flags = %lx"), elf_elfheader (abfd)->e_flags); |
| 3599 | |
| 3600 | switch (elf_elfheader (abfd)->e_flags & EF_M32R_ARCH) |
| 3601 | { |
| 3602 | default: |
| 3603 | case E_M32R_ARCH: fprintf (file, _(": m32r instructions")); break; |
| 3604 | case E_M32RX_ARCH: fprintf (file, _(": m32rx instructions")); break; |
| 3605 | case E_M32R2_ARCH: fprintf (file, _(": m32r2 instructions")); break; |
| 3606 | } |
| 3607 | |
| 3608 | fputc ('\n', file); |
| 3609 | |
| 3610 | return TRUE; |
| 3611 | } |
| 3612 | |
| 3613 | static asection * |
| 3614 | m32r_elf_gc_mark_hook (asection *sec, |
| 3615 | struct bfd_link_info *info, |
| 3616 | Elf_Internal_Rela *rel, |
| 3617 | struct elf_link_hash_entry *h, |
| 3618 | Elf_Internal_Sym *sym) |
| 3619 | { |
| 3620 | if (h != NULL) |
| 3621 | switch (ELF32_R_TYPE (rel->r_info)) |
| 3622 | { |
| 3623 | case R_M32R_GNU_VTINHERIT: |
| 3624 | case R_M32R_GNU_VTENTRY: |
| 3625 | case R_M32R_RELA_GNU_VTINHERIT: |
| 3626 | case R_M32R_RELA_GNU_VTENTRY: |
| 3627 | return NULL; |
| 3628 | } |
| 3629 | |
| 3630 | return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym); |
| 3631 | } |
| 3632 | |
| 3633 | static bfd_boolean |
| 3634 | m32r_elf_gc_sweep_hook (bfd *abfd ATTRIBUTE_UNUSED, |
| 3635 | struct bfd_link_info *info ATTRIBUTE_UNUSED, |
| 3636 | asection *sec ATTRIBUTE_UNUSED, |
| 3637 | const Elf_Internal_Rela *relocs ATTRIBUTE_UNUSED) |
| 3638 | { |
| 3639 | /* Update the got entry reference counts for the section being removed. */ |
| 3640 | Elf_Internal_Shdr *symtab_hdr; |
| 3641 | struct elf_link_hash_entry **sym_hashes; |
| 3642 | bfd_signed_vma *local_got_refcounts; |
| 3643 | const Elf_Internal_Rela *rel, *relend; |
| 3644 | |
| 3645 | if (info->relocatable) |
| 3646 | return TRUE; |
| 3647 | |
| 3648 | elf_section_data (sec)->local_dynrel = NULL; |
| 3649 | |
| 3650 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 3651 | sym_hashes = elf_sym_hashes (abfd); |
| 3652 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 3653 | |
| 3654 | relend = relocs + sec->reloc_count; |
| 3655 | for (rel = relocs; rel < relend; rel++) |
| 3656 | { |
| 3657 | unsigned long r_symndx; |
| 3658 | struct elf_link_hash_entry *h = NULL; |
| 3659 | |
| 3660 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 3661 | if (r_symndx >= symtab_hdr->sh_info) |
| 3662 | { |
| 3663 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3664 | while (h->root.type == bfd_link_hash_indirect |
| 3665 | || h->root.type == bfd_link_hash_warning) |
| 3666 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3667 | } |
| 3668 | |
| 3669 | switch (ELF32_R_TYPE (rel->r_info)) |
| 3670 | { |
| 3671 | case R_M32R_GOT16_HI_ULO: |
| 3672 | case R_M32R_GOT16_HI_SLO: |
| 3673 | case R_M32R_GOT16_LO: |
| 3674 | case R_M32R_GOTOFF: |
| 3675 | case R_M32R_GOTOFF_HI_ULO: |
| 3676 | case R_M32R_GOTOFF_HI_SLO: |
| 3677 | case R_M32R_GOTOFF_LO: |
| 3678 | case R_M32R_GOT24: |
| 3679 | case R_M32R_GOTPC_HI_ULO: |
| 3680 | case R_M32R_GOTPC_HI_SLO: |
| 3681 | case R_M32R_GOTPC_LO: |
| 3682 | case R_M32R_GOTPC24: |
| 3683 | if (h != NULL) |
| 3684 | { |
| 3685 | if (h->got.refcount > 0) |
| 3686 | h->got.refcount--; |
| 3687 | } |
| 3688 | else |
| 3689 | { |
| 3690 | if (local_got_refcounts && local_got_refcounts[r_symndx] > 0) |
| 3691 | local_got_refcounts[r_symndx]--; |
| 3692 | } |
| 3693 | break; |
| 3694 | |
| 3695 | case R_M32R_16_RELA: |
| 3696 | case R_M32R_24_RELA: |
| 3697 | case R_M32R_32_RELA: |
| 3698 | case R_M32R_REL32: |
| 3699 | case R_M32R_HI16_ULO_RELA: |
| 3700 | case R_M32R_HI16_SLO_RELA: |
| 3701 | case R_M32R_LO16_RELA: |
| 3702 | case R_M32R_SDA16_RELA: |
| 3703 | case R_M32R_10_PCREL_RELA: |
| 3704 | case R_M32R_18_PCREL_RELA: |
| 3705 | case R_M32R_26_PCREL_RELA: |
| 3706 | if (h != NULL) |
| 3707 | { |
| 3708 | struct elf_m32r_link_hash_entry *eh; |
| 3709 | struct elf_m32r_dyn_relocs **pp; |
| 3710 | struct elf_m32r_dyn_relocs *p; |
| 3711 | |
| 3712 | if (!info->shared && h->plt.refcount > 0) |
| 3713 | h->plt.refcount -= 1; |
| 3714 | |
| 3715 | eh = (struct elf_m32r_link_hash_entry *) h; |
| 3716 | |
| 3717 | for (pp = &eh->dyn_relocs; (p = *pp) != NULL; pp = &p->next) |
| 3718 | if (p->sec == sec) |
| 3719 | { |
| 3720 | if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA |
| 3721 | || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA |
| 3722 | || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA |
| 3723 | || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) |
| 3724 | p->pc_count -= 1; |
| 3725 | p->count -= 1; |
| 3726 | if (p->count == 0) |
| 3727 | *pp = p->next; |
| 3728 | break; |
| 3729 | } |
| 3730 | } |
| 3731 | break; |
| 3732 | |
| 3733 | case R_M32R_26_PLTREL: |
| 3734 | if (h != NULL) |
| 3735 | { |
| 3736 | if (h->plt.refcount > 0) |
| 3737 | h->plt.refcount--; |
| 3738 | } |
| 3739 | break; |
| 3740 | |
| 3741 | default: |
| 3742 | break; |
| 3743 | } |
| 3744 | } |
| 3745 | |
| 3746 | return TRUE; |
| 3747 | } |
| 3748 | |
| 3749 | /* Look through the relocs for a section during the first phase. |
| 3750 | Since we don't do .gots or .plts, we just need to consider the |
| 3751 | virtual table relocs for gc. */ |
| 3752 | |
| 3753 | static bfd_boolean |
| 3754 | m32r_elf_check_relocs (bfd *abfd, |
| 3755 | struct bfd_link_info *info, |
| 3756 | asection *sec, |
| 3757 | const Elf_Internal_Rela *relocs) |
| 3758 | { |
| 3759 | Elf_Internal_Shdr *symtab_hdr; |
| 3760 | struct elf_link_hash_entry **sym_hashes; |
| 3761 | const Elf_Internal_Rela *rel; |
| 3762 | const Elf_Internal_Rela *rel_end; |
| 3763 | struct elf_m32r_link_hash_table *htab; |
| 3764 | bfd *dynobj; |
| 3765 | bfd_vma *local_got_offsets; |
| 3766 | asection *sgot, *srelgot, *sreloc; |
| 3767 | |
| 3768 | if (info->relocatable) |
| 3769 | return TRUE; |
| 3770 | |
| 3771 | sgot = srelgot = sreloc = NULL; |
| 3772 | |
| 3773 | symtab_hdr = &elf_tdata (abfd)->symtab_hdr; |
| 3774 | sym_hashes = elf_sym_hashes (abfd); |
| 3775 | |
| 3776 | htab = m32r_elf_hash_table (info); |
| 3777 | dynobj = htab->root.dynobj; |
| 3778 | local_got_offsets = elf_local_got_offsets (abfd); |
| 3779 | |
| 3780 | rel_end = relocs + sec->reloc_count; |
| 3781 | for (rel = relocs; rel < rel_end; rel++) |
| 3782 | { |
| 3783 | int r_type; |
| 3784 | struct elf_link_hash_entry *h; |
| 3785 | unsigned long r_symndx; |
| 3786 | |
| 3787 | r_symndx = ELF32_R_SYM (rel->r_info); |
| 3788 | r_type = ELF32_R_TYPE (rel->r_info); |
| 3789 | if (r_symndx < symtab_hdr->sh_info) |
| 3790 | h = NULL; |
| 3791 | else |
| 3792 | { |
| 3793 | h = sym_hashes[r_symndx - symtab_hdr->sh_info]; |
| 3794 | while (h->root.type == bfd_link_hash_indirect |
| 3795 | || h->root.type == bfd_link_hash_warning) |
| 3796 | h = (struct elf_link_hash_entry *) h->root.u.i.link; |
| 3797 | } |
| 3798 | |
| 3799 | /* Some relocs require a global offset table. */ |
| 3800 | if (htab->sgot == NULL) |
| 3801 | { |
| 3802 | switch (r_type) |
| 3803 | { |
| 3804 | case R_M32R_GOT16_HI_ULO: |
| 3805 | case R_M32R_GOT16_HI_SLO: |
| 3806 | case R_M32R_GOTOFF: |
| 3807 | case R_M32R_GOTOFF_HI_ULO: |
| 3808 | case R_M32R_GOTOFF_HI_SLO: |
| 3809 | case R_M32R_GOTOFF_LO: |
| 3810 | case R_M32R_GOT16_LO: |
| 3811 | case R_M32R_GOTPC24: |
| 3812 | case R_M32R_GOTPC_HI_ULO: |
| 3813 | case R_M32R_GOTPC_HI_SLO: |
| 3814 | case R_M32R_GOTPC_LO: |
| 3815 | case R_M32R_GOT24: |
| 3816 | if (dynobj == NULL) |
| 3817 | htab->root.dynobj = dynobj = abfd; |
| 3818 | if (! create_got_section (dynobj, info)) |
| 3819 | return FALSE; |
| 3820 | break; |
| 3821 | |
| 3822 | default: |
| 3823 | break; |
| 3824 | } |
| 3825 | } |
| 3826 | |
| 3827 | switch (r_type) |
| 3828 | { |
| 3829 | case R_M32R_GOT16_HI_ULO: |
| 3830 | case R_M32R_GOT16_HI_SLO: |
| 3831 | case R_M32R_GOT16_LO: |
| 3832 | case R_M32R_GOT24: |
| 3833 | |
| 3834 | if (h != NULL) |
| 3835 | h->got.refcount += 1; |
| 3836 | else |
| 3837 | { |
| 3838 | bfd_signed_vma *local_got_refcounts; |
| 3839 | |
| 3840 | /* This is a global offset table entry for a local |
| 3841 | symbol. */ |
| 3842 | local_got_refcounts = elf_local_got_refcounts (abfd); |
| 3843 | if (local_got_refcounts == NULL) |
| 3844 | { |
| 3845 | bfd_size_type size; |
| 3846 | |
| 3847 | size = symtab_hdr->sh_info; |
| 3848 | size *= sizeof (bfd_signed_vma); |
| 3849 | local_got_refcounts = bfd_zalloc (abfd, size); |
| 3850 | if (local_got_refcounts == NULL) |
| 3851 | return FALSE; |
| 3852 | elf_local_got_refcounts (abfd) = local_got_refcounts; |
| 3853 | } |
| 3854 | local_got_refcounts[r_symndx] += 1; |
| 3855 | } |
| 3856 | break; |
| 3857 | |
| 3858 | case R_M32R_26_PLTREL: |
| 3859 | /* This symbol requires a procedure linkage table entry. We |
| 3860 | actually build the entry in adjust_dynamic_symbol, |
| 3861 | because this might be a case of linking PIC code without |
| 3862 | linking in any dynamic objects, in which case we don't |
| 3863 | need to generate a procedure linkage table after all. */ |
| 3864 | |
| 3865 | /* If this is a local symbol, we resolve it directly without |
| 3866 | creating a procedure linkage table entry. */ |
| 3867 | if (h == NULL) |
| 3868 | continue; |
| 3869 | |
| 3870 | if (h->forced_local) |
| 3871 | break; |
| 3872 | |
| 3873 | h->needs_plt = 1; |
| 3874 | h->plt.refcount += 1; |
| 3875 | break; |
| 3876 | |
| 3877 | case R_M32R_16_RELA: |
| 3878 | case R_M32R_24_RELA: |
| 3879 | case R_M32R_32_RELA: |
| 3880 | case R_M32R_REL32: |
| 3881 | case R_M32R_HI16_ULO_RELA: |
| 3882 | case R_M32R_HI16_SLO_RELA: |
| 3883 | case R_M32R_LO16_RELA: |
| 3884 | case R_M32R_SDA16_RELA: |
| 3885 | case R_M32R_10_PCREL_RELA: |
| 3886 | case R_M32R_18_PCREL_RELA: |
| 3887 | case R_M32R_26_PCREL_RELA: |
| 3888 | |
| 3889 | if (h != NULL && !info->shared) |
| 3890 | { |
| 3891 | h->non_got_ref = 1; |
| 3892 | h->plt.refcount += 1; |
| 3893 | } |
| 3894 | |
| 3895 | /* If we are creating a shared library, and this is a reloc |
| 3896 | against a global symbol, or a non PC relative reloc |
| 3897 | against a local symbol, then we need to copy the reloc |
| 3898 | into the shared library. However, if we are linking with |
| 3899 | -Bsymbolic, we do not need to copy a reloc against a |
| 3900 | global symbol which is defined in an object we are |
| 3901 | including in the link (i.e., DEF_REGULAR is set). At |
| 3902 | this point we have not seen all the input files, so it is |
| 3903 | possible that DEF_REGULAR is not set now but will be set |
| 3904 | later (it is never cleared). We account for that |
| 3905 | possibility below by storing information in the |
| 3906 | dyn_relocs field of the hash table entry. A similar |
| 3907 | situation occurs when creating shared libraries and symbol |
| 3908 | visibility changes render the symbol local. |
| 3909 | |
| 3910 | If on the other hand, we are creating an executable, we |
| 3911 | may need to keep relocations for symbols satisfied by a |
| 3912 | dynamic library if we manage to avoid copy relocs for the |
| 3913 | symbol. */ |
| 3914 | if ((info->shared |
| 3915 | && (sec->flags & SEC_ALLOC) != 0 |
| 3916 | && (( r_type != R_M32R_26_PCREL_RELA |
| 3917 | && r_type != R_M32R_18_PCREL_RELA |
| 3918 | && r_type != R_M32R_10_PCREL_RELA |
| 3919 | && r_type != R_M32R_REL32) |
| 3920 | || (h != NULL |
| 3921 | && (! info->symbolic |
| 3922 | || h->root.type == bfd_link_hash_defweak |
| 3923 | || !h->def_regular)))) |
| 3924 | || (!info->shared |
| 3925 | && (sec->flags & SEC_ALLOC) != 0 |
| 3926 | && h != NULL |
| 3927 | && (h->root.type == bfd_link_hash_defweak |
| 3928 | || !h->def_regular))) |
| 3929 | { |
| 3930 | struct elf_m32r_dyn_relocs *p; |
| 3931 | struct elf_m32r_dyn_relocs **head; |
| 3932 | |
| 3933 | if (dynobj == NULL) |
| 3934 | htab->root.dynobj = dynobj = abfd; |
| 3935 | |
| 3936 | /* When creating a shared object, we must copy these |
| 3937 | relocs into the output file. We create a reloc |
| 3938 | section in dynobj and make room for the reloc. */ |
| 3939 | if (sreloc == NULL) |
| 3940 | { |
| 3941 | sreloc = _bfd_elf_make_dynamic_reloc_section |
| 3942 | (sec, dynobj, 2, abfd, /*rela?*/ TRUE); |
| 3943 | |
| 3944 | if (sreloc == NULL) |
| 3945 | return FALSE; |
| 3946 | } |
| 3947 | |
| 3948 | /* If this is a global symbol, we count the number of |
| 3949 | relocations we need for this symbol. */ |
| 3950 | if (h != NULL) |
| 3951 | head = &((struct elf_m32r_link_hash_entry *) h)->dyn_relocs; |
| 3952 | else |
| 3953 | { |
| 3954 | asection *s; |
| 3955 | void *vpp; |
| 3956 | |
| 3957 | /* Track dynamic relocs needed for local syms too. */ |
| 3958 | s = bfd_section_from_r_symndx (abfd, &htab->sym_sec, |
| 3959 | sec, r_symndx); |
| 3960 | if (s == NULL) |
| 3961 | return FALSE; |
| 3962 | |
| 3963 | vpp = &elf_section_data (s)->local_dynrel; |
| 3964 | head = (struct elf_m32r_dyn_relocs **) vpp; |
| 3965 | } |
| 3966 | |
| 3967 | p = *head; |
| 3968 | if (p == NULL || p->sec != sec) |
| 3969 | { |
| 3970 | bfd_size_type amt = sizeof (*p); |
| 3971 | |
| 3972 | p = bfd_alloc (dynobj, amt); |
| 3973 | if (p == NULL) |
| 3974 | return FALSE; |
| 3975 | p->next = *head; |
| 3976 | *head = p; |
| 3977 | p->sec = sec; |
| 3978 | p->count = 0; |
| 3979 | p->pc_count = 0; |
| 3980 | } |
| 3981 | |
| 3982 | p->count += 1; |
| 3983 | if ( ELF32_R_TYPE (rel->r_info) == R_M32R_26_PCREL_RELA |
| 3984 | || ELF32_R_TYPE (rel->r_info) == R_M32R_18_PCREL_RELA |
| 3985 | || ELF32_R_TYPE (rel->r_info) == R_M32R_10_PCREL_RELA |
| 3986 | || ELF32_R_TYPE (rel->r_info) == R_M32R_REL32) |
| 3987 | p->pc_count += 1; |
| 3988 | } |
| 3989 | break; |
| 3990 | |
| 3991 | /* This relocation describes the C++ object vtable hierarchy. |
| 3992 | Reconstruct it for later use during GC. */ |
| 3993 | case R_M32R_RELA_GNU_VTINHERIT: |
| 3994 | case R_M32R_GNU_VTINHERIT: |
| 3995 | if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset)) |
| 3996 | return FALSE; |
| 3997 | break; |
| 3998 | |
| 3999 | /* This relocation describes which C++ vtable entries are actually |
| 4000 | used. Record for later use during GC. */ |
| 4001 | case R_M32R_GNU_VTENTRY: |
| 4002 | BFD_ASSERT (h != NULL); |
| 4003 | if (h != NULL |
| 4004 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_offset)) |
| 4005 | return FALSE; |
| 4006 | break; |
| 4007 | case R_M32R_RELA_GNU_VTENTRY: |
| 4008 | BFD_ASSERT (h != NULL); |
| 4009 | if (h != NULL |
| 4010 | && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend)) |
| 4011 | return FALSE; |
| 4012 | break; |
| 4013 | } |
| 4014 | } |
| 4015 | |
| 4016 | return TRUE; |
| 4017 | } |
| 4018 | |
| 4019 | static const struct bfd_elf_special_section m32r_elf_special_sections[] = |
| 4020 | { |
| 4021 | { STRING_COMMA_LEN (".sbss"), -2, SHT_NOBITS, SHF_ALLOC + SHF_WRITE }, |
| 4022 | { STRING_COMMA_LEN (".sdata"), -2, SHT_PROGBITS, SHF_ALLOC + SHF_WRITE }, |
| 4023 | { NULL, 0, 0, 0, 0 } |
| 4024 | }; |
| 4025 | |
| 4026 | static bfd_boolean |
| 4027 | m32r_elf_fake_sections (bfd *abfd, |
| 4028 | Elf_Internal_Shdr *hdr ATTRIBUTE_UNUSED, |
| 4029 | asection *sec) |
| 4030 | { |
| 4031 | const char *name; |
| 4032 | |
| 4033 | name = bfd_get_section_name (abfd, sec); |
| 4034 | |
| 4035 | /* The generic elf_fake_sections will set up REL_HDR using the |
| 4036 | default kind of relocations. But, we may actually need both |
| 4037 | kinds of relocations, so we set up the second header here. |
| 4038 | |
| 4039 | This is not necessary for the O32 ABI since that only uses Elf32_Rel |
| 4040 | relocations (cf. System V ABI, MIPS RISC Processor Supplement, |
| 4041 | 3rd Edition, p. 4-17). It breaks the IRIX 5/6 32-bit ld, since one |
| 4042 | of the resulting empty .rela.<section> sections starts with |
| 4043 | sh_offset == object size, and ld doesn't allow that. While the check |
| 4044 | is arguably bogus for empty or SHT_NOBITS sections, it can easily be |
| 4045 | avoided by not emitting those useless sections in the first place. */ |
| 4046 | if ((sec->flags & SEC_RELOC) != 0) |
| 4047 | { |
| 4048 | struct bfd_elf_section_data *esd; |
| 4049 | bfd_size_type amt = sizeof (Elf_Internal_Shdr); |
| 4050 | |
| 4051 | esd = elf_section_data (sec); |
| 4052 | BFD_ASSERT (esd->rel_hdr2 == NULL); |
| 4053 | esd->rel_hdr2 = bfd_zalloc (abfd, amt); |
| 4054 | if (!esd->rel_hdr2) |
| 4055 | return FALSE; |
| 4056 | _bfd_elf_init_reloc_shdr (abfd, esd->rel_hdr2, sec, |
| 4057 | !sec->use_rela_p); |
| 4058 | } |
| 4059 | |
| 4060 | return TRUE; |
| 4061 | } |
| 4062 | |
| 4063 | static enum elf_reloc_type_class |
| 4064 | m32r_elf_reloc_type_class (const Elf_Internal_Rela *rela) |
| 4065 | { |
| 4066 | switch ((int) ELF32_R_TYPE (rela->r_info)) |
| 4067 | { |
| 4068 | case R_M32R_RELATIVE: return reloc_class_relative; |
| 4069 | case R_M32R_JMP_SLOT: return reloc_class_plt; |
| 4070 | case R_M32R_COPY: return reloc_class_copy; |
| 4071 | default: return reloc_class_normal; |
| 4072 | } |
| 4073 | } |
| 4074 | \f |
| 4075 | #define ELF_ARCH bfd_arch_m32r |
| 4076 | #define ELF_MACHINE_CODE EM_M32R |
| 4077 | #define ELF_MACHINE_ALT1 EM_CYGNUS_M32R |
| 4078 | #define ELF_MAXPAGESIZE 0x1 /* Explicitly requested by Mitsubishi. */ |
| 4079 | |
| 4080 | #define TARGET_BIG_SYM bfd_elf32_m32r_vec |
| 4081 | #define TARGET_BIG_NAME "elf32-m32r" |
| 4082 | #define TARGET_LITTLE_SYM bfd_elf32_m32rle_vec |
| 4083 | #define TARGET_LITTLE_NAME "elf32-m32rle" |
| 4084 | |
| 4085 | #define elf_info_to_howto m32r_info_to_howto |
| 4086 | #define elf_info_to_howto_rel m32r_info_to_howto_rel |
| 4087 | #define elf_backend_section_from_bfd_section _bfd_m32r_elf_section_from_bfd_section |
| 4088 | #define elf_backend_symbol_processing _bfd_m32r_elf_symbol_processing |
| 4089 | #define elf_backend_add_symbol_hook m32r_elf_add_symbol_hook |
| 4090 | #define elf_backend_relocate_section m32r_elf_relocate_section |
| 4091 | #define elf_backend_gc_mark_hook m32r_elf_gc_mark_hook |
| 4092 | #define elf_backend_gc_sweep_hook m32r_elf_gc_sweep_hook |
| 4093 | #define elf_backend_check_relocs m32r_elf_check_relocs |
| 4094 | |
| 4095 | #define elf_backend_create_dynamic_sections m32r_elf_create_dynamic_sections |
| 4096 | #define bfd_elf32_bfd_link_hash_table_create m32r_elf_link_hash_table_create |
| 4097 | #define elf_backend_size_dynamic_sections m32r_elf_size_dynamic_sections |
| 4098 | #define elf_backend_omit_section_dynsym \ |
| 4099 | ((bfd_boolean (*) (bfd *, struct bfd_link_info *, asection *)) bfd_true) |
| 4100 | #define elf_backend_finish_dynamic_sections m32r_elf_finish_dynamic_sections |
| 4101 | #define elf_backend_adjust_dynamic_symbol m32r_elf_adjust_dynamic_symbol |
| 4102 | #define elf_backend_finish_dynamic_symbol m32r_elf_finish_dynamic_symbol |
| 4103 | #define elf_backend_reloc_type_class m32r_elf_reloc_type_class |
| 4104 | #define elf_backend_copy_indirect_symbol m32r_elf_copy_indirect_symbol |
| 4105 | |
| 4106 | #define elf_backend_can_gc_sections 1 |
| 4107 | /*#if !USE_REL |
| 4108 | #define elf_backend_rela_normal 1 |
| 4109 | #endif*/ |
| 4110 | #define elf_backend_can_refcount 1 |
| 4111 | #define elf_backend_want_got_plt 1 |
| 4112 | #define elf_backend_plt_readonly 1 |
| 4113 | #define elf_backend_want_plt_sym 0 |
| 4114 | #define elf_backend_got_header_size 12 |
| 4115 | |
| 4116 | #define elf_backend_may_use_rel_p 1 |
| 4117 | #ifdef USE_M32R_OLD_RELOC |
| 4118 | #define elf_backend_default_use_rela_p 0 |
| 4119 | #define elf_backend_may_use_rela_p 0 |
| 4120 | #else |
| 4121 | #define elf_backend_default_use_rela_p 1 |
| 4122 | #define elf_backend_may_use_rela_p 1 |
| 4123 | #define elf_backend_fake_sections m32r_elf_fake_sections |
| 4124 | #endif |
| 4125 | |
| 4126 | #define elf_backend_object_p m32r_elf_object_p |
| 4127 | #define elf_backend_final_write_processing m32r_elf_final_write_processing |
| 4128 | #define bfd_elf32_bfd_merge_private_bfd_data m32r_elf_merge_private_bfd_data |
| 4129 | #define bfd_elf32_bfd_set_private_flags m32r_elf_set_private_flags |
| 4130 | #define bfd_elf32_bfd_print_private_bfd_data m32r_elf_print_private_bfd_data |
| 4131 | #define elf_backend_special_sections m32r_elf_special_sections |
| 4132 | |
| 4133 | #include "elf32-target.h" |
| 4134 | |
| 4135 | #undef ELF_MAXPAGESIZE |
| 4136 | #define ELF_MAXPAGESIZE 0x1000 |
| 4137 | |
| 4138 | #undef TARGET_BIG_SYM |
| 4139 | #define TARGET_BIG_SYM bfd_elf32_m32rlin_vec |
| 4140 | #undef TARGET_BIG_NAME |
| 4141 | #define TARGET_BIG_NAME "elf32-m32r-linux" |
| 4142 | #undef TARGET_LITTLE_SYM |
| 4143 | #define TARGET_LITTLE_SYM bfd_elf32_m32rlelin_vec |
| 4144 | #undef TARGET_LITTLE_NAME |
| 4145 | #define TARGET_LITTLE_NAME "elf32-m32rle-linux" |
| 4146 | #undef elf32_bed |
| 4147 | #define elf32_bed elf32_m32r_lin_bed |
| 4148 | |
| 4149 | #include "elf32-target.h" |
| 4150 | |