1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
3 Free Software Foundation, Inc.
4 Contributed by Axis Communications AB.
5 Written by Hans-Peter Nilsson, based on elf32-fr30.c
6 PIC and shlib bits based primarily on elf32-m68k.c and elf32-i386.c.
8 This file is part of BFD, the Binary File Descriptor library.
10 This program is free software; you can redistribute it and/or modify
11 it under the terms of the GNU General Public License as published by
12 the Free Software Foundation; either version 3 of the License, or
13 (at your option) any later version.
15 This program is distributed in the hope that it will be useful,
16 but WITHOUT ANY WARRANTY; without even the implied warranty of
17 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
18 GNU General Public License for more details.
20 You should have received a copy of the GNU General Public License
21 along with this program; if not, write to the Free Software
22 Foundation, Inc., 51 Franklin Street - Fifth Floor, Boston,
23 MA 02110-1301, USA. */
31 /* Forward declarations. */
32 static reloc_howto_type * cris_reloc_type_lookup
33 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
35 static void cris_info_to_howto_rela
36 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
38 static bfd_reloc_status_type cris_elf_pcrel_reloc
39 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
41 static bfd_boolean cris_elf_grok_prstatus
42 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
44 static bfd_boolean cris_elf_grok_psinfo
45 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
47 static bfd_boolean cris_elf_relocate_section
48 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
49 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
51 static bfd_reloc_status_type cris_final_link_relocate
52 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
53 Elf_Internal_Rela *, bfd_vma));
55 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
57 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
59 static bfd_boolean cris_elf_set_mach_from_flags
60 PARAMS ((bfd *, unsigned long int));
62 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
64 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
65 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
67 struct elf_cris_link_hash_entry;
68 static bfd_boolean elf_cris_discard_excess_dso_dynamics
69 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
70 static bfd_boolean elf_cris_discard_excess_program_dynamics
71 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
72 static bfd_boolean elf_cris_adjust_gotplt_to_got
73 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
74 static bfd_boolean elf_cris_try_fold_plt_to_got
75 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
76 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
77 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
78 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
80 static bfd_boolean elf_cris_adjust_dynamic_symbol
81 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
82 static bfd_boolean cris_elf_check_relocs
83 PARAMS ((bfd *, struct bfd_link_info *, asection *,
84 const Elf_Internal_Rela *));
86 static bfd_boolean elf_cris_size_dynamic_sections
87 PARAMS ((bfd *, struct bfd_link_info *));
88 static bfd_boolean elf_cris_finish_dynamic_symbol
89 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
91 static bfd_boolean elf_cris_finish_dynamic_sections
92 PARAMS ((bfd *, struct bfd_link_info *));
93 static void elf_cris_hide_symbol
94 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
95 static enum elf_reloc_type_class elf_cris_reloc_type_class
96 PARAMS ((const Elf_Internal_Rela *));
98 static reloc_howto_type cris_elf_howto_table [] =
100 /* This reloc does nothing. */
101 HOWTO (R_CRIS_NONE, /* type */
103 2, /* size (0 = byte, 1 = short, 2 = long) */
105 FALSE, /* pc_relative */
107 complain_overflow_bitfield, /* complain_on_overflow */
108 bfd_elf_generic_reloc, /* special_function */
109 "R_CRIS_NONE", /* name */
110 FALSE, /* partial_inplace */
113 FALSE), /* pcrel_offset */
115 /* An 8 bit absolute relocation. */
116 HOWTO (R_CRIS_8, /* type */
118 0, /* size (0 = byte, 1 = short, 2 = long) */
120 FALSE, /* pc_relative */
122 complain_overflow_bitfield, /* complain_on_overflow */
123 bfd_elf_generic_reloc, /* special_function */
124 "R_CRIS_8", /* name */
125 FALSE, /* partial_inplace */
126 0x0000, /* src_mask */
127 0x00ff, /* dst_mask */
128 FALSE), /* pcrel_offset */
130 /* A 16 bit absolute relocation. */
131 HOWTO (R_CRIS_16, /* type */
133 1, /* size (0 = byte, 1 = short, 2 = long) */
135 FALSE, /* pc_relative */
137 complain_overflow_bitfield, /* complain_on_overflow */
138 bfd_elf_generic_reloc, /* special_function */
139 "R_CRIS_16", /* name */
140 FALSE, /* partial_inplace */
141 0x00000000, /* src_mask */
142 0x0000ffff, /* dst_mask */
143 FALSE), /* pcrel_offset */
145 /* A 32 bit absolute relocation. */
146 HOWTO (R_CRIS_32, /* type */
148 2, /* size (0 = byte, 1 = short, 2 = long) */
150 FALSE, /* pc_relative */
152 /* We don't want overflow complaints for 64-bit vma builds
153 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
154 32-bit ELF) where sym=0xc0001234.
155 Don't do this for the PIC relocs, as we don't expect to
156 see them with large offsets. */
157 complain_overflow_dont, /* complain_on_overflow */
158 bfd_elf_generic_reloc, /* special_function */
159 "R_CRIS_32", /* name */
160 FALSE, /* partial_inplace */
161 0x00000000, /* src_mask */
162 0xffffffff, /* dst_mask */
163 FALSE), /* pcrel_offset */
165 /* An 8 bit PC-relative relocation. */
166 HOWTO (R_CRIS_8_PCREL, /* type */
168 0, /* size (0 = byte, 1 = short, 2 = long) */
170 TRUE, /* pc_relative */
172 complain_overflow_bitfield, /* complain_on_overflow */
173 cris_elf_pcrel_reloc, /* special_function */
174 "R_CRIS_8_PCREL", /* name */
175 FALSE, /* partial_inplace */
176 0x0000, /* src_mask */
177 0x00ff, /* dst_mask */
178 TRUE), /* pcrel_offset */
180 /* A 16 bit PC-relative relocation. */
181 HOWTO (R_CRIS_16_PCREL, /* type */
183 1, /* size (0 = byte, 1 = short, 2 = long) */
185 TRUE, /* pc_relative */
187 complain_overflow_bitfield, /* complain_on_overflow */
188 cris_elf_pcrel_reloc, /* special_function */
189 "R_CRIS_16_PCREL", /* name */
190 FALSE, /* partial_inplace */
191 0x00000000, /* src_mask */
192 0x0000ffff, /* dst_mask */
193 TRUE), /* pcrel_offset */
195 /* A 32 bit PC-relative relocation. */
196 HOWTO (R_CRIS_32_PCREL, /* type */
198 2, /* size (0 = byte, 1 = short, 2 = long) */
200 TRUE, /* pc_relative */
202 complain_overflow_bitfield, /* complain_on_overflow */
203 cris_elf_pcrel_reloc, /* special_function */
204 "R_CRIS_32_PCREL", /* name */
205 FALSE, /* partial_inplace */
206 0x00000000, /* src_mask */
207 0xffffffff, /* dst_mask */
208 TRUE), /* pcrel_offset */
210 /* GNU extension to record C++ vtable hierarchy. */
211 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
213 2, /* size (0 = byte, 1 = short, 2 = long) */
215 FALSE, /* pc_relative */
217 complain_overflow_dont, /* complain_on_overflow */
218 NULL, /* special_function */
219 "R_CRIS_GNU_VTINHERIT", /* name */
220 FALSE, /* partial_inplace */
223 FALSE), /* pcrel_offset */
225 /* GNU extension to record C++ vtable member usage. */
226 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
228 2, /* size (0 = byte, 1 = short, 2 = long) */
230 FALSE, /* pc_relative */
232 complain_overflow_dont, /* complain_on_overflow */
233 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
234 "R_CRIS_GNU_VTENTRY", /* name */
235 FALSE, /* partial_inplace */
238 FALSE), /* pcrel_offset */
240 /* This is used only by the dynamic linker. The symbol should exist
241 both in the object being run and in some shared library. The
242 dynamic linker copies the data addressed by the symbol from the
243 shared library into the object, because the object being
244 run has to have the data at some particular address. */
245 HOWTO (R_CRIS_COPY, /* type */
247 2, /* size (0 = byte, 1 = short, 2 = long) */
249 FALSE, /* pc_relative */
251 complain_overflow_bitfield, /* complain_on_overflow */
252 bfd_elf_generic_reloc, /* special_function */
253 "R_CRIS_COPY", /* name */
254 FALSE, /* partial_inplace */
257 FALSE), /* pcrel_offset */
259 /* Like R_CRIS_32, but used when setting global offset table entries. */
260 HOWTO (R_CRIS_GLOB_DAT, /* type */
262 2, /* size (0 = byte, 1 = short, 2 = long) */
264 FALSE, /* pc_relative */
266 complain_overflow_bitfield, /* complain_on_overflow */
267 bfd_elf_generic_reloc, /* special_function */
268 "R_CRIS_GLOB_DAT", /* name */
269 FALSE, /* partial_inplace */
271 0xffffffff, /* dst_mask */
272 FALSE), /* pcrel_offset */
274 /* Marks a procedure linkage table entry for a symbol. */
275 HOWTO (R_CRIS_JUMP_SLOT, /* type */
277 2, /* size (0 = byte, 1 = short, 2 = long) */
279 FALSE, /* pc_relative */
281 complain_overflow_bitfield, /* complain_on_overflow */
282 bfd_elf_generic_reloc, /* special_function */
283 "R_CRIS_JUMP_SLOT", /* name */
284 FALSE, /* partial_inplace */
287 FALSE), /* pcrel_offset */
289 /* Used only by the dynamic linker. When the object is run, this
290 longword is set to the load address of the object, plus the
292 HOWTO (R_CRIS_RELATIVE, /* type */
294 2, /* size (0 = byte, 1 = short, 2 = long) */
296 FALSE, /* pc_relative */
298 complain_overflow_bitfield, /* complain_on_overflow */
299 bfd_elf_generic_reloc, /* special_function */
300 "R_CRIS_RELATIVE", /* name */
301 FALSE, /* partial_inplace */
303 0xffffffff, /* dst_mask */
304 FALSE), /* pcrel_offset */
306 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
307 HOWTO (R_CRIS_16_GOT, /* type */
309 1, /* size (0 = byte, 1 = short, 2 = long) */
311 FALSE, /* pc_relative */
313 complain_overflow_bitfield, /* complain_on_overflow */
314 bfd_elf_generic_reloc, /* special_function */
315 "R_CRIS_16_GOT", /* name */
316 FALSE, /* partial_inplace */
318 0xffff, /* dst_mask */
319 FALSE), /* pcrel_offset */
321 HOWTO (R_CRIS_32_GOT, /* type */
323 2, /* size (0 = byte, 1 = short, 2 = long) */
325 FALSE, /* pc_relative */
327 complain_overflow_bitfield, /* complain_on_overflow */
328 bfd_elf_generic_reloc, /* special_function */
329 "R_CRIS_32_GOT", /* name */
330 FALSE, /* partial_inplace */
332 0xffffffff, /* dst_mask */
333 FALSE), /* pcrel_offset */
335 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
336 the GOT table for the symbol. */
337 HOWTO (R_CRIS_16_GOTPLT, /* type */
339 1, /* size (0 = byte, 1 = short, 2 = long) */
341 FALSE, /* pc_relative */
343 complain_overflow_bitfield, /* complain_on_overflow */
344 bfd_elf_generic_reloc, /* special_function */
345 "R_CRIS_16_GOTPLT", /* name */
346 FALSE, /* partial_inplace */
348 0xffff, /* dst_mask */
349 FALSE), /* pcrel_offset */
351 HOWTO (R_CRIS_32_GOTPLT, /* type */
353 2, /* size (0 = byte, 1 = short, 2 = long) */
355 FALSE, /* pc_relative */
357 complain_overflow_bitfield, /* complain_on_overflow */
358 bfd_elf_generic_reloc, /* special_function */
359 "R_CRIS_32_GOTPLT", /* name */
360 FALSE, /* partial_inplace */
362 0xffffffff, /* dst_mask */
363 FALSE), /* pcrel_offset */
365 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
367 HOWTO (R_CRIS_32_GOTREL, /* type */
369 2, /* size (0 = byte, 1 = short, 2 = long) */
371 FALSE, /* pc_relative */
373 complain_overflow_bitfield, /* complain_on_overflow */
374 bfd_elf_generic_reloc, /* special_function */
375 "R_CRIS_32_GOTREL", /* name */
376 FALSE, /* partial_inplace */
378 0xffffffff, /* dst_mask */
379 FALSE), /* pcrel_offset */
381 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
382 to create PLT entry for symbol. */
383 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
385 2, /* size (0 = byte, 1 = short, 2 = long) */
387 FALSE, /* pc_relative */
389 complain_overflow_bitfield, /* complain_on_overflow */
390 bfd_elf_generic_reloc, /* special_function */
391 "R_CRIS_32_PLT_GOTREL", /* name */
392 FALSE, /* partial_inplace */
394 0xffffffff, /* dst_mask */
395 FALSE), /* pcrel_offset */
397 /* A 32-bit offset from PC (location after the relocation) + addend to
398 entry for this symbol in PLT and request to create PLT entry for
400 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
402 2, /* size (0 = byte, 1 = short, 2 = long) */
404 TRUE, /* pc_relative */
406 complain_overflow_bitfield, /* complain_on_overflow */
407 cris_elf_pcrel_reloc, /* special_function */
408 "R_CRIS_32_PLT_PCREL", /* name */
409 FALSE, /* partial_inplace */
411 0xffffffff, /* dst_mask */
412 TRUE), /* pcrel_offset */
414 /* We don't handle these in any special manner and cross-format
415 linking is not supported; just recognize them enough to pass them
416 around. FIXME: do the same for most PIC relocs and add sanity
417 tests to actually refuse gracefully to handle these and PIC
418 relocs for cross-format linking. */
419 #define TLSHOWTO32(name) \
420 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
421 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
422 #define TLSHOWTO16(name) \
423 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_bitfield, \
424 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
426 TLSHOWTO32 (R_CRIS_32_GOT_GD),
427 TLSHOWTO16 (R_CRIS_16_GOT_GD),
428 TLSHOWTO32 (R_CRIS_32_GD),
429 TLSHOWTO32 (R_CRIS_DTP),
430 TLSHOWTO32 (R_CRIS_32_DTPREL),
431 TLSHOWTO16 (R_CRIS_16_DTPREL),
432 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
433 TLSHOWTO16 (R_CRIS_16_GOT_TPREL),
434 TLSHOWTO32 (R_CRIS_32_TPREL),
435 TLSHOWTO16 (R_CRIS_16_TPREL),
436 TLSHOWTO32 (R_CRIS_DTPMOD)
439 /* Map BFD reloc types to CRIS ELF reloc types. */
441 struct cris_reloc_map
443 bfd_reloc_code_real_type bfd_reloc_val;
444 unsigned int cris_reloc_val;
447 static const struct cris_reloc_map cris_reloc_map [] =
449 { BFD_RELOC_NONE, R_CRIS_NONE },
450 { BFD_RELOC_8, R_CRIS_8 },
451 { BFD_RELOC_16, R_CRIS_16 },
452 { BFD_RELOC_32, R_CRIS_32 },
453 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
454 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
455 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
456 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
457 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
458 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
459 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
460 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
461 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
462 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
463 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
464 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
465 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
466 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
467 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
468 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
469 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
470 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
471 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
472 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
473 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
474 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
475 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
476 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
477 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
478 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
479 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD }
482 static reloc_howto_type *
483 cris_reloc_type_lookup (abfd, code)
484 bfd * abfd ATTRIBUTE_UNUSED;
485 bfd_reloc_code_real_type code;
489 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
490 if (cris_reloc_map [i].bfd_reloc_val == code)
491 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
496 static reloc_howto_type *
497 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
502 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
504 if (cris_elf_howto_table[i].name != NULL
505 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
506 return &cris_elf_howto_table[i];
511 /* Set the howto pointer for an CRIS ELF reloc. */
514 cris_info_to_howto_rela (abfd, cache_ptr, dst)
515 bfd * abfd ATTRIBUTE_UNUSED;
517 Elf_Internal_Rela * dst;
521 r_type = ELF32_R_TYPE (dst->r_info);
522 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
523 cache_ptr->howto = & cris_elf_howto_table [r_type];
526 bfd_reloc_status_type
527 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
528 output_bfd, error_message)
529 bfd *abfd ATTRIBUTE_UNUSED;
530 arelent *reloc_entry;
532 PTR data ATTRIBUTE_UNUSED;
533 asection *input_section;
535 char **error_message ATTRIBUTE_UNUSED;
537 /* By default (using only bfd_elf_generic_reloc when linking to
538 non-ELF formats) PC-relative relocs are relative to the beginning
539 of the reloc. CRIS PC-relative relocs are relative to the position
540 *after* the reloc because that's what pre-CRISv32 PC points to
541 after reading an insn field with that reloc. (For CRISv32, PC is
542 actually relative to the start of the insn, but we keep the old
543 definition.) Still, we use as much generic machinery as we can.
545 Only adjust when doing a final link. */
546 if (output_bfd == (bfd *) NULL)
547 reloc_entry->addend -= 1 << reloc_entry->howto->size;
550 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
551 input_section, output_bfd, error_message);
554 /* Support for core dump NOTE sections.
555 The slightly unintuitive code layout is an attempt to keep at least
556 some similarities with other ports, hoping to simplify general
557 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
560 cris_elf_grok_prstatus (abfd, note)
562 Elf_Internal_Note *note;
567 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
568 switch (note->descsz)
573 case 202: /* Linux/CRISv32 */
575 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
578 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
587 switch (note->descsz)
592 case 214: /* Linux/CRIS */
594 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
597 elf_tdata (abfd)->core_pid = bfd_get_32 (abfd, note->descdata + 22);
606 /* Make a ".reg/999" section. */
607 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
608 size, note->descpos + offset);
612 cris_elf_grok_psinfo (abfd, note)
614 Elf_Internal_Note *note;
616 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
617 switch (note->descsz)
622 case 124: /* Linux/CRISv32 elf_prpsinfo */
623 elf_tdata (abfd)->core_program
624 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
625 elf_tdata (abfd)->core_command
626 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
629 switch (note->descsz)
634 case 124: /* Linux/CRIS elf_prpsinfo */
635 elf_tdata (abfd)->core_program
636 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
637 elf_tdata (abfd)->core_command
638 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
641 /* Note that for some reason, a spurious space is tacked
642 onto the end of the args in some (at least one anyway)
643 implementations, so strip it off if it exists. */
646 char *command = elf_tdata (abfd)->core_command;
647 int n = strlen (command);
649 if (0 < n && command[n - 1] == ' ')
650 command[n - 1] = '\0';
656 /* The name of the dynamic interpreter. This is put in the .interp
659 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
661 /* The size in bytes of an entry in the procedure linkage table. */
663 #define PLT_ENTRY_SIZE 20
664 #define PLT_ENTRY_SIZE_V32 26
666 /* The first entry in an absolute procedure linkage table looks like this. */
668 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
671 0x7e, 0x7e, /* push mof. */
672 0x7f, 0x0d, /* (dip [pc+]) */
673 0, 0, 0, 0, /* Replaced with address of .got + 4. */
674 0x30, 0x7a, /* move [...],mof */
675 0x7f, 0x0d, /* (dip [pc+]) */
676 0, 0, 0, 0, /* Replaced with address of .got + 8. */
677 0x30, 0x09 /* jump [...] */
680 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
682 0x84, 0xe2, /* subq 4,$sp */
683 0x6f, 0xfe, /* move.d 0,$acr */
684 0, 0, 0, 0, /* Replaced by address of .got + 4. */
685 0x7e, 0x7a, /* move $mof,[$sp] */
686 0x3f, 0x7a, /* move [$acr],$mof */
687 0x04, 0xf2, /* addq 4,acr */
688 0x6f, 0xfa, /* move.d [$acr],$acr */
689 0xbf, 0x09, /* jump $acr */
690 0xb0, 0x05, /* nop */
691 0, 0 /* Pad out to 26 bytes. */
694 /* Subsequent entries in an absolute procedure linkage table look like
697 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
699 0x7f, 0x0d, /* (dip [pc+]) */
700 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
701 0x30, 0x09, /* jump [...] */
702 0x3f, 0x7e, /* move [pc+],mof */
703 0, 0, 0, 0, /* Replaced with offset into relocation table. */
704 0x2f, 0xfe, /* add.d [pc+],pc */
706 0xff, 0xff /* Replaced with offset to start of .plt. */
709 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
711 0x6f, 0xfe, /* move.d 0,$acr */
712 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
713 0x6f, 0xfa, /* move.d [$acr],$acr */
714 0xbf, 0x09, /* jump $acr */
715 0xb0, 0x05, /* nop */
716 0x3f, 0x7e, /* move 0,mof */
717 0, 0, 0, 0, /* Replaced with offset into relocation table. */
718 0xbf, 0x0e, /* ba start_of_plt0_entry */
719 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
723 /* The first entry in a PIC procedure linkage table looks like this. */
725 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
727 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
728 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
729 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
730 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
733 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
735 0x84, 0xe2, /* subq 4,$sp */
736 0x04, 0x01, /* addoq 4,$r0,$acr */
737 0x7e, 0x7a, /* move $mof,[$sp] */
738 0x3f, 0x7a, /* move [$acr],$mof */
739 0x04, 0xf2, /* addq 4,$acr */
740 0x6f, 0xfa, /* move.d [$acr],$acr */
741 0xbf, 0x09, /* jump $acr */
742 0xb0, 0x05, /* nop */
743 0, 0, /* Pad out to 26 bytes. */
748 /* Subsequent entries in a PIC procedure linkage table look like this. */
750 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
752 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
753 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
754 0x30, 0x09, /* jump [...] */
755 0x3f, 0x7e, /* move [pc+],mof */
756 0, 0, 0, 0, /* Replaced with offset into relocation table. */
757 0x2f, 0xfe, /* add.d [pc+],pc */
758 0xec, 0xff, /* Replaced with offset to start of .plt. */
762 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
764 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
765 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
766 0x6f, 0xfa, /* move.d [$acr],$acr */
767 0xbf, 0x09, /* jump $acr */
768 0xb0, 0x05, /* nop */
769 0x3f, 0x7e, /* move relocoffs,$mof */
770 0, 0, 0, 0, /* Replaced with offset into relocation table. */
771 0xbf, 0x0e, /* ba start_of_plt */
772 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
776 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
777 (and most other PIC/shlib stuff). Check that we don't drift away
780 The CRIS linker, like the m68k and i386 linkers (and probably the rest
781 too) needs to keep track of the number of relocs that it decides to
782 copy in check_relocs for each symbol. This is so that it can discard
783 PC relative relocs if it doesn't need them when linking with
784 -Bsymbolic. We store the information in a field extending the regular
785 ELF linker hash table. */
787 /* This structure keeps track of the number of PC relative relocs we have
788 copied for a given symbol. */
790 struct elf_cris_pcrel_relocs_copied
793 struct elf_cris_pcrel_relocs_copied *next;
794 /* A section in dynobj. */
796 /* Number of relocs copied in this section. */
800 /* CRIS ELF linker hash entry. */
802 struct elf_cris_link_hash_entry
804 struct elf_link_hash_entry root;
806 /* Number of PC relative relocs copied for this symbol. */
807 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
809 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
810 both a general GOT and a PLT-specific GOT entry for the same symbol,
811 when it is referenced both as a function and as a function pointer.
813 Number of GOTPLT references for a function. */
814 bfd_signed_vma gotplt_refcount;
816 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
817 (zero is never used as an index). FIXME: We should be able to fold
818 this with gotplt_refcount in a union, like the got and plt unions in
819 elf_link_hash_entry. */
820 bfd_size_type gotplt_offset;
823 /* CRIS ELF linker hash table. */
825 struct elf_cris_link_hash_table
827 struct elf_link_hash_table root;
829 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
830 since we try and avoid creating GOTPLT:s when there's already a GOT.
831 Instead, we keep and update the next available index here. */
832 bfd_size_type next_gotplt_entry;
835 /* Traverse a CRIS ELF linker hash table. */
837 #define elf_cris_link_hash_traverse(table, func, info) \
838 (elf_link_hash_traverse \
840 (bfd_boolean (*) PARAMS ((struct elf_link_hash_entry *, PTR))) (func), \
843 /* Get the CRIS ELF linker hash table from a link_info structure. */
845 #define elf_cris_hash_table(p) \
846 ((struct elf_cris_link_hash_table *) (p)->hash)
848 /* Create an entry in a CRIS ELF linker hash table. */
850 static struct bfd_hash_entry *
851 elf_cris_link_hash_newfunc (entry, table, string)
852 struct bfd_hash_entry *entry;
853 struct bfd_hash_table *table;
856 struct elf_cris_link_hash_entry *ret =
857 (struct elf_cris_link_hash_entry *) entry;
859 /* Allocate the structure if it has not already been allocated by a
861 if (ret == (struct elf_cris_link_hash_entry *) NULL)
862 ret = ((struct elf_cris_link_hash_entry *)
863 bfd_hash_allocate (table,
864 sizeof (struct elf_cris_link_hash_entry)));
865 if (ret == (struct elf_cris_link_hash_entry *) NULL)
866 return (struct bfd_hash_entry *) ret;
868 /* Call the allocation method of the superclass. */
869 ret = ((struct elf_cris_link_hash_entry *)
870 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
872 if (ret != (struct elf_cris_link_hash_entry *) NULL)
874 ret->pcrel_relocs_copied = NULL;
875 ret->gotplt_refcount = 0;
876 ret->gotplt_offset = 0;
879 return (struct bfd_hash_entry *) ret;
882 /* Create a CRIS ELF linker hash table. */
884 static struct bfd_link_hash_table *
885 elf_cris_link_hash_table_create (abfd)
888 struct elf_cris_link_hash_table *ret;
889 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
891 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
892 if (ret == (struct elf_cris_link_hash_table *) NULL)
895 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
896 elf_cris_link_hash_newfunc,
897 sizeof (struct elf_cris_link_hash_entry)))
903 /* Initialize to skip over the first three entries in the gotplt; they
904 are used for run-time symbol evaluation. */
905 ret->next_gotplt_entry = 12;
907 return &ret->root.root;
910 /* Perform a single relocation. By default we use the standard BFD
911 routines, with a few tweaks. */
913 static bfd_reloc_status_type
914 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
916 reloc_howto_type * howto;
918 asection * input_section;
920 Elf_Internal_Rela * rel;
923 bfd_reloc_status_type r;
925 /* PC-relative relocations are relative to the position *after*
926 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
927 not a single byte, since PC must be 16-bit-aligned. */
928 switch (ELF32_R_TYPE (rel->r_info))
930 /* Check that the 16-bit GOT relocs are positive. */
931 case R_CRIS_16_GOTPLT:
933 if ((bfd_signed_vma) relocation < 0)
934 return bfd_reloc_overflow;
937 case R_CRIS_32_PLT_PCREL:
938 case R_CRIS_32_PCREL:
942 case R_CRIS_16_PCREL:
950 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
951 contents, rel->r_offset,
952 relocation, rel->r_addend);
956 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
957 copied, for further comments. */
960 cris_elf_relocate_section (output_bfd, info, input_bfd, input_section,
961 contents, relocs, local_syms, local_sections)
962 bfd *output_bfd ATTRIBUTE_UNUSED;
963 struct bfd_link_info *info;
965 asection *input_section;
967 Elf_Internal_Rela *relocs;
968 Elf_Internal_Sym *local_syms;
969 asection **local_sections;
972 Elf_Internal_Shdr *symtab_hdr;
973 struct elf_link_hash_entry **sym_hashes;
974 bfd_vma *local_got_offsets;
978 Elf_Internal_Rela *rel;
979 Elf_Internal_Rela *relend;
981 dynobj = elf_hash_table (info)->dynobj;
982 local_got_offsets = elf_local_got_offsets (input_bfd);
983 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
984 sym_hashes = elf_sym_hashes (input_bfd);
985 relend = relocs + input_section->reloc_count;
993 splt = bfd_get_section_by_name (dynobj, ".plt");
994 sgot = bfd_get_section_by_name (dynobj, ".got");
997 for (rel = relocs; rel < relend; rel ++)
999 reloc_howto_type *howto;
1000 unsigned long r_symndx;
1001 Elf_Internal_Sym *sym;
1003 struct elf_link_hash_entry *h;
1005 bfd_reloc_status_type r;
1006 const char *symname = NULL;
1009 r_type = ELF32_R_TYPE (rel->r_info);
1011 if ( r_type == R_CRIS_GNU_VTINHERIT
1012 || r_type == R_CRIS_GNU_VTENTRY)
1015 r_symndx = ELF32_R_SYM (rel->r_info);
1016 howto = cris_elf_howto_table + r_type;
1021 if (r_symndx < symtab_hdr->sh_info)
1023 sym = local_syms + r_symndx;
1024 sec = local_sections [r_symndx];
1025 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1027 symname = (bfd_elf_string_from_elf_section
1028 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1029 if (symname == NULL)
1030 symname = bfd_section_name (input_bfd, sec);
1035 bfd_boolean unresolved_reloc;
1037 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1038 r_symndx, symtab_hdr, sym_hashes,
1040 unresolved_reloc, warned);
1042 if (unresolved_reloc
1043 /* Perhaps we should detect the cases that
1044 sec->output_section is expected to be NULL like i386 and
1045 m68k, but apparently (and according to elfxx-ia64.c) all
1046 valid cases are where the symbol is defined in a shared
1047 object which we link dynamically against. This includes
1048 PLT relocs for which we've created a PLT entry and other
1049 relocs for which we're prepared to create dynamic
1052 For now, new situations cause us to just err when
1053 sec->output_offset is NULL but the object with the symbol
1054 is *not* dynamically linked against. Thus this will
1055 automatically remind us so we can see if there are other
1056 valid cases we need to revisit. */
1057 && (sec->owner->flags & DYNAMIC) != 0)
1060 else if (h->root.type == bfd_link_hash_defined
1061 || h->root.type == bfd_link_hash_defweak)
1063 /* Here follow the cases where the relocation value must
1064 be zero (or when further handling is simplified when
1065 zero). I can't claim to understand the various
1066 conditions and they weren't described in the files
1067 where I copied them from (elf32-m68k.c and
1068 elf32-i386.c), but let's mention examples of where
1069 they happen. FIXME: Perhaps define and use a
1070 dynamic_symbol_p function like ia64.
1072 - When creating a shared library, we can have an
1073 ordinary relocation for a symbol defined in a shared
1074 library (perhaps the one we create). We then make
1075 the relocation value zero, as the value seen now will
1076 be added into the relocation addend in this shared
1077 library, but must be handled only at dynamic-link
1078 time. FIXME: Not sure this example covers the
1079 h->elf_link_hash_flags test, though it's there in
1082 && ((! info->symbolic && h->dynindx != -1)
1084 && (input_section->flags & SEC_ALLOC) != 0
1085 && (r_type == R_CRIS_8
1086 || r_type == R_CRIS_16
1087 || r_type == R_CRIS_32
1088 || r_type == R_CRIS_8_PCREL
1089 || r_type == R_CRIS_16_PCREL
1090 || r_type == R_CRIS_32_PCREL))
1092 else if (!info->relocatable && unresolved_reloc)
1095 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1098 cris_elf_howto_table[r_type].name,
1100 bfd_set_error (bfd_error_bad_value);
1106 if (sec != NULL && elf_discarded_section (sec))
1108 /* For relocs against symbols from removed linkonce sections,
1109 or sections discarded by a linker script, we just want the
1110 section contents zeroed. Avoid any special processing. */
1111 _bfd_clear_contents (howto, input_bfd, contents + rel->r_offset);
1117 if (info->relocatable)
1122 case R_CRIS_16_GOTPLT:
1123 case R_CRIS_32_GOTPLT:
1124 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1125 but we require a PLT, and the PLT handling will take care of
1126 filling in the PLT-specific GOT entry. For the GOT offset,
1127 calculate it as we do when filling it in for the .got.plt
1128 section. If we don't have a PLT, punt to GOT handling. */
1130 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1133 = bfd_get_section_by_name (dynobj, ".got.plt");
1136 BFD_ASSERT (h->dynindx != -1);
1137 BFD_ASSERT (sgotplt != NULL);
1140 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1142 relocation = got_offset;
1146 /* We didn't make a PLT entry for this symbol. Maybe everything is
1147 folded into the GOT. Other than folding, this happens when
1148 statically linking PIC code, or when using -Bsymbolic. Check
1149 that we instead have a GOT entry as done for us by
1150 elf_cris_adjust_dynamic_symbol, and drop through into the
1151 ordinary GOT cases. This must not happen for the
1152 executable, because any reference it does to a function
1153 that is satisfied by a DSO must generate a PLT. We assume
1154 these call-specific relocs don't address non-functions. */
1156 && (h->got.offset == (bfd_vma) -1
1160 && h->root.type == bfd_link_hash_undefweak)))))
1162 (*_bfd_error_handler)
1163 ((h->got.offset == (bfd_vma) -1)
1164 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1165 " against symbol `%s'")
1166 : _("%B, section %A: No PLT for relocation %s"
1167 " against symbol `%s'"),
1170 cris_elf_howto_table[r_type].name,
1171 (symname != NULL && symname[0] != '\0'
1172 ? symname : _("[whose name is lost]")));
1174 /* FIXME: Perhaps blaming input is not the right thing to
1175 do; this is probably an internal error. But it is true
1176 that we didn't like that particular input. */
1177 bfd_set_error (bfd_error_bad_value);
1182 /* The size of the actual relocation is not used here; we only
1183 fill in the GOT table here. */
1189 /* Note that despite using RELA relocations, the .got contents
1190 is always filled in with the link-relative relocation
1191 value; the addend. */
1195 off = h->got.offset;
1196 BFD_ASSERT (off != (bfd_vma) -1);
1198 if (!elf_hash_table (info)->dynamic_sections_created
1201 || h->type == STT_FUNC
1204 && (info->symbolic || h->dynindx == -1)
1207 /* This wasn't checked above for ! info->shared, but
1208 must hold there if we get here; the symbol must
1209 be defined in the regular program or be undefweak
1210 or be a function or otherwise need a PLT. */
1211 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1214 || h->type == STT_FUNC
1216 || h->root.type == bfd_link_hash_undefweak);
1218 /* This is actually a static link, or it is a
1219 -Bsymbolic link and the symbol is defined locally,
1220 or is undefweak, or the symbol was forced to be
1221 local because of a version file, or we're not
1222 creating a dynamic object. We must initialize this
1223 entry in the global offset table. Since the offset
1224 must always be a multiple of 4, we use the least
1225 significant bit to record whether we have
1226 initialized it already.
1228 If this GOT entry should be runtime-initialized, we
1229 will create a .rela.got relocation entry to
1230 initialize the value. This is done in the
1231 finish_dynamic_symbol routine. */
1236 bfd_put_32 (output_bfd, relocation,
1237 sgot->contents + off);
1244 BFD_ASSERT (local_got_offsets != NULL
1245 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1247 off = local_got_offsets[r_symndx];
1249 /* The offset must always be a multiple of 4. We use
1250 the least significant bit to record whether we have
1251 already generated the necessary reloc. */
1256 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1261 Elf_Internal_Rela outrel;
1264 s = bfd_get_section_by_name (dynobj, ".rela.got");
1265 BFD_ASSERT (s != NULL);
1267 outrel.r_offset = (sgot->output_section->vma
1268 + sgot->output_offset
1270 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1271 outrel.r_addend = relocation;
1273 loc += s->reloc_count++ * sizeof (Elf32_External_Rela);
1274 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1277 local_got_offsets[r_symndx] |= 1;
1281 relocation = sgot->output_offset + off;
1282 if (rel->r_addend != 0)
1284 /* We can't do anything for a relocation which is against
1285 a symbol *plus offset*. GOT holds relocations for
1286 symbols. Make this an error; the compiler isn't
1287 allowed to pass us these kinds of things. */
1289 (*_bfd_error_handler)
1290 (_("%B, section %A: relocation %s with non-zero addend %d"
1291 " against local symbol"),
1294 cris_elf_howto_table[r_type].name,
1297 (*_bfd_error_handler)
1298 (_("%B, section %A: relocation %s with non-zero addend %d"
1299 " against symbol `%s'"),
1302 cris_elf_howto_table[r_type].name,
1304 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1306 bfd_set_error (bfd_error_bad_value);
1312 case R_CRIS_32_GOTREL:
1313 /* This relocation must only be performed against local symbols.
1314 It's also ok when we link a program and the symbol is either
1315 defined in an ordinary (non-DSO) object or is undefined weak. */
1317 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1321 && h->root.type == bfd_link_hash_undefweak))))
1323 (*_bfd_error_handler)
1324 (_("%B, section %A: relocation %s is"
1325 " not allowed for global symbol: `%s'"),
1328 cris_elf_howto_table[r_type].name,
1330 bfd_set_error (bfd_error_bad_value);
1334 /* This can happen if we get a link error with the input ELF
1335 variant mismatching the output variant. Emit an error so
1336 it's noticed if it happens elsewhere. */
1339 (*_bfd_error_handler)
1340 (_("%B, section %A: relocation %s with no GOT created"),
1343 cris_elf_howto_table[r_type].name);
1344 bfd_set_error (bfd_error_bad_value);
1348 /* This relocation is like a PC-relative one, except the
1349 reference point is the location of GOT. Note that
1350 sgot->output_offset is not involved in this calculation. We
1351 always want the start of entire .got section, not the
1352 position after the reserved header. */
1353 relocation -= sgot->output_section->vma;
1356 case R_CRIS_32_PLT_PCREL:
1357 /* Relocation is to the entry for this symbol in the
1358 procedure linkage table. */
1360 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1361 without using the procedure linkage table. */
1362 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1365 if (h->plt.offset == (bfd_vma) -1
1368 /* We didn't make a PLT entry for this symbol. This
1369 happens when statically linking PIC code, or when
1370 using -Bsymbolic. */
1374 relocation = (splt->output_section->vma
1375 + splt->output_offset
1379 case R_CRIS_32_PLT_GOTREL:
1380 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1381 start of the .got section. See also comment at
1383 relocation -= sgot->output_section->vma;
1385 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1386 without using the procedure linkage table. */
1387 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1390 if (h->plt.offset == (bfd_vma) -1
1393 /* We didn't make a PLT entry for this symbol. This
1394 happens when statically linking PIC code, or when
1395 using -Bsymbolic. */
1399 relocation = (splt->output_section->vma
1400 + splt->output_offset
1402 - sgot->output_section->vma);
1405 case R_CRIS_8_PCREL:
1406 case R_CRIS_16_PCREL:
1407 case R_CRIS_32_PCREL:
1408 /* If the symbol was local, we need no shlib-specific handling. */
1409 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1418 && (input_section->flags & SEC_ALLOC) != 0
1419 && ((r_type != R_CRIS_8_PCREL
1420 && r_type != R_CRIS_16_PCREL
1421 && r_type != R_CRIS_32_PCREL)
1423 || !h->def_regular)))
1425 Elf_Internal_Rela outrel;
1427 bfd_boolean skip, relocate;
1429 /* When generating a shared object, these relocations
1430 are copied into the output file to be resolved at run
1437 name = (bfd_elf_string_from_elf_section
1439 elf_elfheader (input_bfd)->e_shstrndx,
1440 elf_section_data (input_section)->rel_hdr.sh_name));
1444 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
1445 && strcmp (bfd_get_section_name (input_bfd,
1449 sreloc = bfd_get_section_by_name (dynobj, name);
1451 /* That section should have been created in
1452 cris_elf_check_relocs, but that function will not be
1453 called for objects which fail in
1454 cris_elf_merge_private_bfd_data. */
1457 (*_bfd_error_handler)
1458 (_("%B: Internal inconsistency; no relocation section %s"),
1462 bfd_set_error (bfd_error_bad_value);
1471 _bfd_elf_section_offset (output_bfd, info, input_section,
1473 if (outrel.r_offset == (bfd_vma) -1)
1475 else if (outrel.r_offset == (bfd_vma) -2)
1476 skip = TRUE, relocate = TRUE;
1477 outrel.r_offset += (input_section->output_section->vma
1478 + input_section->output_offset);
1481 memset (&outrel, 0, sizeof outrel);
1482 /* h->dynindx may be -1 if the symbol was marked to
1485 && ((! info->symbolic && h->dynindx != -1)
1486 || !h->def_regular))
1488 BFD_ASSERT (h->dynindx != -1);
1489 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1490 outrel.r_addend = relocation + rel->r_addend;
1494 outrel.r_addend = relocation + rel->r_addend;
1496 if (r_type == R_CRIS_32)
1499 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1505 if (bfd_is_abs_section (sec))
1507 else if (sec == NULL || sec->owner == NULL)
1509 bfd_set_error (bfd_error_bad_value);
1516 /* We are turning this relocation into one
1517 against a section symbol. It would be
1518 proper to subtract the symbol's value,
1519 osec->vma, from the emitted reloc addend,
1520 but ld.so expects buggy relocs. */
1521 osec = sec->output_section;
1522 indx = elf_section_data (osec)->dynindx;
1525 struct elf_cris_link_hash_table *htab;
1526 htab = elf_cris_hash_table (info);
1527 osec = htab->root.text_index_section;
1528 indx = elf_section_data (osec)->dynindx;
1530 BFD_ASSERT (indx != 0);
1533 outrel.r_info = ELF32_R_INFO (indx, r_type);
1537 loc = sreloc->contents;
1538 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1539 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1541 /* This reloc will be computed at runtime, so there's no
1542 need to do anything now, except for R_CRIS_32 relocations
1543 that have been turned into R_CRIS_RELATIVE. */
1551 r = cris_final_link_relocate (howto, input_bfd, input_section,
1552 contents, rel, relocation);
1554 if (r != bfd_reloc_ok)
1556 const char * msg = (const char *) NULL;
1560 case bfd_reloc_overflow:
1561 r = info->callbacks->reloc_overflow
1562 (info, (h ? &h->root : NULL), symname, howto->name,
1563 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
1566 case bfd_reloc_undefined:
1567 r = info->callbacks->undefined_symbol
1568 (info, symname, input_bfd, input_section, rel->r_offset,
1572 case bfd_reloc_outofrange:
1573 msg = _("internal error: out of range error");
1576 case bfd_reloc_notsupported:
1577 msg = _("internal error: unsupported relocation error");
1580 case bfd_reloc_dangerous:
1581 msg = _("internal error: dangerous relocation");
1585 msg = _("internal error: unknown error");
1590 r = info->callbacks->warning
1591 (info, msg, symname, input_bfd, input_section, rel->r_offset);
1601 /* Finish up dynamic symbol handling. We set the contents of various
1602 dynamic sections here. */
1605 elf_cris_finish_dynamic_symbol (output_bfd, info, h, sym)
1607 struct bfd_link_info *info;
1608 struct elf_link_hash_entry *h;
1609 Elf_Internal_Sym *sym;
1613 /* Where in the plt entry to put values. */
1614 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
1616 /* What offset to add to the distance to the first PLT entry for the
1617 value at plt_off3. */
1618 int plt_off3_value_bias = 4;
1620 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
1621 for PIC and non-PIC for v32 and pre-v32). */
1622 int plt_stub_offset = 8;
1623 int plt_entry_size = PLT_ENTRY_SIZE;
1624 const bfd_byte *plt_entry = elf_cris_plt_entry;
1625 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
1627 /* Adjust the various PLT entry offsets. */
1628 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1632 plt_off3_value_bias = -2;
1633 plt_stub_offset = 12;
1634 plt_entry_size = PLT_ENTRY_SIZE_V32;
1635 plt_entry = elf_cris_plt_entry_v32;
1636 plt_pic_entry = elf_cris_pic_plt_entry_v32;
1639 dynobj = elf_hash_table (info)->dynobj;
1641 if (h->plt.offset != (bfd_vma) -1)
1649 bfd_vma gotplt_offset
1650 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1651 Elf_Internal_Rela rela;
1653 bfd_boolean has_gotplt = gotplt_offset != 0;
1655 /* Get the index in the procedure linkage table which
1656 corresponds to this symbol. This is the index of this symbol
1657 in all the symbols for which we are making plt entries. The
1658 first entry in the procedure linkage table is reserved. */
1659 /* We have to count backwards here, and the result is only valid as
1660 an index into .got.plt and its relocations. FIXME: Constants... */
1661 bfd_vma gotplt_index = gotplt_offset/4 - 3;
1663 /* Get the offset into the .got table of the entry that corresponds
1664 to this function. Note that we embed knowledge that "incoming"
1665 .got goes after .got.plt in the output without padding (pointer
1666 aligned). However, that knowledge is present in several other
1671 : h->got.offset + elf_cris_hash_table(info)->next_gotplt_entry);
1673 /* This symbol has an entry in the procedure linkage table. Set it
1676 BFD_ASSERT (h->dynindx != -1);
1678 splt = bfd_get_section_by_name (dynobj, ".plt");
1679 sgot = bfd_get_section_by_name (dynobj, ".got");
1680 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1681 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
1682 BFD_ASSERT (splt != NULL && sgotplt != NULL
1683 && (! has_gotplt || srela != NULL));
1685 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
1687 /* Fill in the entry in the procedure linkage table. */
1690 memcpy (splt->contents + h->plt.offset, plt_entry,
1693 /* We need to enter the absolute address of the GOT entry here. */
1694 bfd_put_32 (output_bfd, got_base + got_offset,
1695 splt->contents + h->plt.offset + plt_off1);
1699 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
1701 bfd_put_32 (output_bfd, got_offset,
1702 splt->contents + h->plt.offset + plt_off1);
1705 /* Fill in the plt entry and make a relocation, if this is a "real"
1709 /* Fill in the offset to the reloc table. */
1710 bfd_put_32 (output_bfd,
1711 gotplt_index * sizeof (Elf32_External_Rela),
1712 splt->contents + h->plt.offset + plt_off2);
1714 /* Fill in the offset to the first PLT entry, where to "jump". */
1715 bfd_put_32 (output_bfd,
1716 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
1717 splt->contents + h->plt.offset + plt_off3);
1719 /* Fill in the entry in the global offset table with the address of
1720 the relocating stub. */
1721 bfd_put_32 (output_bfd,
1722 (splt->output_section->vma
1723 + splt->output_offset
1726 sgotplt->contents + got_offset);
1728 /* Fill in the entry in the .rela.plt section. */
1729 rela.r_offset = (sgotplt->output_section->vma
1730 + sgotplt->output_offset
1732 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
1734 loc = srela->contents + gotplt_index * sizeof (Elf32_External_Rela);
1735 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1738 if (!h->def_regular)
1740 /* Mark the symbol as undefined, rather than as defined in
1741 the .plt section. Leave the value alone. */
1742 sym->st_shndx = SHN_UNDEF;
1744 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
1745 know whether resetting the value is significant; if it really
1746 is, rather than a quirk or bug in the sparc port, then I
1747 believe we'd see this elsewhere. */
1748 /* If the symbol is weak, we do need to clear the value.
1749 Otherwise, the PLT entry would provide a definition for
1750 the symbol even if the symbol wasn't defined anywhere,
1751 and so the symbol would never be NULL. */
1752 if (!h->ref_regular_nonweak)
1757 /* For an ordinary program, we emit .got relocs only for symbols that
1758 are in the dynamic-symbols table and are either defined by the
1759 program or are undefined weak symbols, or are function symbols
1760 where we do not output a PLT: the PLT reloc was output above and all
1761 references to the function symbol are redirected to the PLT. */
1762 if (h->got.offset != (bfd_vma) -1
1764 || (h->dynindx != -1
1765 && h->plt.offset == (bfd_vma) -1
1767 && h->root.type != bfd_link_hash_undefweak)))
1771 Elf_Internal_Rela rela;
1775 /* This symbol has an entry in the global offset table. Set it up. */
1777 sgot = bfd_get_section_by_name (dynobj, ".got");
1778 srela = bfd_get_section_by_name (dynobj, ".rela.got");
1779 BFD_ASSERT (sgot != NULL && srela != NULL);
1781 rela.r_offset = (sgot->output_section->vma
1782 + sgot->output_offset
1783 + (h->got.offset &~ (bfd_vma) 1));
1785 /* If this is a static link, or it is a -Bsymbolic link and the
1786 symbol is defined locally or was forced to be local because
1787 of a version file, we just want to emit a RELATIVE reloc.
1788 The entry in the global offset table will already have been
1789 initialized in the relocate_section function. */
1790 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
1791 if (! elf_hash_table (info)->dynamic_sections_created
1793 && (info->symbolic || h->dynindx == -1)
1796 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1797 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
1801 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
1802 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
1806 loc = srela->contents;
1807 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
1808 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1814 Elf_Internal_Rela rela;
1817 /* This symbol needs a copy reloc. Set it up. */
1819 BFD_ASSERT (h->dynindx != -1
1820 && (h->root.type == bfd_link_hash_defined
1821 || h->root.type == bfd_link_hash_defweak));
1823 s = bfd_get_section_by_name (h->root.u.def.section->owner,
1825 BFD_ASSERT (s != NULL);
1827 rela.r_offset = (h->root.u.def.value
1828 + h->root.u.def.section->output_section->vma
1829 + h->root.u.def.section->output_offset);
1830 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
1832 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
1833 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
1836 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
1837 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
1838 || h == elf_hash_table (info)->hgot)
1839 sym->st_shndx = SHN_ABS;
1844 /* Finish up the dynamic sections. */
1847 elf_cris_finish_dynamic_sections (output_bfd, info)
1849 struct bfd_link_info *info;
1855 dynobj = elf_hash_table (info)->dynobj;
1857 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
1858 BFD_ASSERT (sgot != NULL);
1859 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
1861 if (elf_hash_table (info)->dynamic_sections_created)
1864 Elf32_External_Dyn *dyncon, *dynconend;
1866 splt = bfd_get_section_by_name (dynobj, ".plt");
1867 BFD_ASSERT (splt != NULL && sdyn != NULL);
1869 dyncon = (Elf32_External_Dyn *) sdyn->contents;
1870 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
1871 for (; dyncon < dynconend; dyncon++)
1873 Elf_Internal_Dyn dyn;
1876 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
1884 s = bfd_get_section_by_name (output_bfd, ".got");
1885 BFD_ASSERT (s != NULL);
1886 dyn.d_un.d_ptr = s->vma;
1887 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1891 /* Yes, we *can* have a .plt and no .plt.rela, for instance
1892 if all symbols are found in the .got (not .got.plt). */
1893 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1894 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
1895 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1899 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1903 dyn.d_un.d_val = s->size;
1904 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1908 /* The procedure linkage table relocs (DT_JMPREL) should
1909 not be included in the overall relocs (DT_RELA).
1910 Therefore, we override the DT_RELASZ entry here to
1911 make it not include the JMPREL relocs. Since the
1912 linker script arranges for .rela.plt to follow all
1913 other relocation sections, we don't have to worry
1914 about changing the DT_RELA entry. */
1915 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
1917 dyn.d_un.d_val -= s->size;
1918 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
1923 /* Fill in the first entry in the procedure linkage table. */
1926 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
1929 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
1930 PLT_ENTRY_SIZE_V32);
1933 memcpy (splt->contents, elf_cris_plt0_entry_v32,
1934 PLT_ENTRY_SIZE_V32);
1935 bfd_put_32 (output_bfd,
1936 sgot->output_section->vma
1937 + sgot->output_offset + 4,
1938 splt->contents + 4);
1940 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1941 = PLT_ENTRY_SIZE_V32;
1947 memcpy (splt->contents, elf_cris_pic_plt0_entry,
1951 memcpy (splt->contents, elf_cris_plt0_entry,
1953 bfd_put_32 (output_bfd,
1954 sgot->output_section->vma
1955 + sgot->output_offset + 4,
1956 splt->contents + 6);
1957 bfd_put_32 (output_bfd,
1958 sgot->output_section->vma
1959 + sgot->output_offset + 8,
1960 splt->contents + 14);
1962 elf_section_data (splt->output_section)->this_hdr.sh_entsize
1969 /* Fill in the first three entries in the global offset table. */
1973 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
1975 bfd_put_32 (output_bfd,
1976 sdyn->output_section->vma + sdyn->output_offset,
1978 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
1979 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
1982 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
1987 /* Return the section that should be marked against GC for a given
1991 cris_elf_gc_mark_hook (asection *sec,
1992 struct bfd_link_info *info,
1993 Elf_Internal_Rela *rel,
1994 struct elf_link_hash_entry *h,
1995 Elf_Internal_Sym *sym)
1998 switch (ELF32_R_TYPE (rel->r_info))
2000 case R_CRIS_GNU_VTINHERIT:
2001 case R_CRIS_GNU_VTENTRY:
2005 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2008 /* Update the got entry reference counts for the section being removed. */
2011 cris_elf_gc_sweep_hook (bfd *abfd,
2012 struct bfd_link_info *info,
2014 const Elf_Internal_Rela *relocs)
2016 Elf_Internal_Shdr *symtab_hdr;
2017 struct elf_link_hash_entry **sym_hashes;
2018 bfd_signed_vma *local_got_refcounts;
2019 const Elf_Internal_Rela *rel, *relend;
2024 if (info->relocatable)
2027 dynobj = elf_hash_table (info)->dynobj;
2031 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2032 sym_hashes = elf_sym_hashes (abfd);
2033 local_got_refcounts = elf_local_got_refcounts (abfd);
2035 sgot = bfd_get_section_by_name (dynobj, ".got");
2036 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2038 relend = relocs + sec->reloc_count;
2039 for (rel = relocs; rel < relend; rel++)
2041 unsigned long r_symndx;
2042 struct elf_link_hash_entry *h = NULL;
2044 r_symndx = ELF32_R_SYM (rel->r_info);
2045 if (r_symndx >= symtab_hdr->sh_info)
2047 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2048 while (h->root.type == bfd_link_hash_indirect
2049 || h->root.type == bfd_link_hash_warning)
2050 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2053 switch (ELF32_R_TYPE (rel->r_info))
2059 if (h->got.refcount > 0)
2062 if (h->got.refcount == 0)
2064 /* We don't need the .got entry any more. */
2066 srelgot->size -= sizeof (Elf32_External_Rela);
2073 if (local_got_refcounts != NULL)
2075 if (local_got_refcounts[r_symndx] > 0)
2077 --local_got_refcounts[r_symndx];
2078 if (local_got_refcounts[r_symndx] == 0)
2080 /* We don't need the .got entry any more. */
2083 srelgot->size -= sizeof (Elf32_External_Rela);
2089 case R_CRIS_16_GOTPLT:
2090 case R_CRIS_32_GOTPLT:
2091 /* For local symbols, treat these like GOT relocs. */
2093 goto local_got_reloc;
2096 case R_CRIS_32_PLT_GOTREL:
2097 /* FIXME: We don't garbage-collect away the .got section. */
2098 if (local_got_refcounts != NULL)
2099 local_got_refcounts[-1]--;
2102 case R_CRIS_8_PCREL:
2103 case R_CRIS_16_PCREL:
2104 case R_CRIS_32_PCREL:
2105 case R_CRIS_32_PLT_PCREL:
2108 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2109 && h->plt.refcount > 0)
2122 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2123 entry but we found we will not create any. Called when we find we will
2124 not have any PLT for this symbol, by for example
2125 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2126 or elf_cris_size_dynamic_sections if no dynamic sections will be
2127 created (we're only linking static objects). */
2130 elf_cris_adjust_gotplt_to_got (h, p)
2131 struct elf_cris_link_hash_entry *h;
2134 struct bfd_link_info *info = (struct bfd_link_info *) p;
2136 if (h->root.root.type == bfd_link_hash_warning)
2137 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2139 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2140 if (h->gotplt_refcount <= 0)
2143 if (h->root.got.refcount > 0)
2145 /* There's a GOT entry for this symbol. Just adjust the refcount.
2146 Probably not necessary at this stage, but keeping it accurate
2147 helps avoiding surprises later. */
2148 h->root.got.refcount += h->gotplt_refcount;
2149 h->gotplt_refcount = 0;
2153 /* No GOT entry for this symbol. We need to create one. */
2154 bfd *dynobj = elf_hash_table (info)->dynobj;
2158 BFD_ASSERT (dynobj != NULL);
2159 sgot = bfd_get_section_by_name (dynobj, ".got");
2160 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2162 /* Put an accurate refcount there. */
2163 h->root.got.refcount = h->gotplt_refcount;
2165 h->gotplt_refcount = 0;
2167 /* We always have a .got and a .rela.got section if there were
2168 GOTPLT relocs in input. */
2169 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2171 /* Allocate space in the .got section. */
2174 /* Allocate relocation space. */
2175 srelgot->size += sizeof (Elf32_External_Rela);
2181 /* Try to fold PLT entries with GOT entries. There are two cases when we
2184 - When all PLT references are GOTPLT references, and there are GOT
2185 references, and this is not the executable. We don't have to
2186 generate a PLT at all.
2188 - When there are both (ordinary) PLT references and GOT references,
2189 and this isn't the executable.
2190 We want to make the PLT reference use the ordinary GOT entry rather
2191 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2192 since the GOT entry will have to be resolved at startup anyway.
2194 Though the latter case is handled when room for the PLT is allocated,
2197 By folding into the GOT, we may need a round-trip to a PLT in the
2198 executable for calls, a loss in performance. Still, losing a
2199 reloc is a win in size and at least in start-up time.
2201 Note that this function is called before symbols are forced local by
2202 version scripts. The differing cases are handled by
2203 elf_cris_hide_symbol. */
2206 elf_cris_try_fold_plt_to_got (h, p)
2207 struct elf_cris_link_hash_entry *h;
2210 struct bfd_link_info *info = (struct bfd_link_info *) p;
2212 /* If there are no GOT references for this symbol, we can't fold any
2213 other reference so there's nothing to do. Likewise if there are no
2214 PLT references; GOTPLT references included. */
2215 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2218 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2219 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2221 if (h->gotplt_refcount == h->root.plt.refcount)
2223 /* The only PLT references are GOTPLT references, and there are GOT
2224 references. Convert PLT to GOT references. */
2225 if (! elf_cris_adjust_gotplt_to_got (h, info))
2228 /* Clear the PLT references, so no PLT will be created. */
2229 h->root.plt.offset = (bfd_vma) -1;
2235 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2236 to use a GOT entry (and create one) rather than requiring a GOTPLT
2240 elf_cris_hide_symbol (info, h, force_local)
2241 struct bfd_link_info *info;
2242 struct elf_link_hash_entry *h;
2243 bfd_boolean force_local;
2245 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2247 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2250 /* Adjust a symbol defined by a dynamic object and referenced by a
2251 regular object. The current definition is in some section of the
2252 dynamic object, but we're not including those sections. We have to
2253 change the definition to something the rest of the link can
2257 elf_cris_adjust_dynamic_symbol (info, h)
2258 struct bfd_link_info *info;
2259 struct elf_link_hash_entry *h;
2263 bfd_size_type plt_entry_size;
2265 dynobj = elf_hash_table (info)->dynobj;
2267 /* Make sure we know what is going on here. */
2268 BFD_ASSERT (dynobj != NULL
2270 || h->u.weakdef != NULL
2273 && !h->def_regular)));
2276 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2277 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2279 /* If this is a function, put it in the procedure linkage table. We
2280 will fill in the contents of the procedure linkage table later,
2281 when we know the address of the .got section. */
2282 if (h->type == STT_FUNC
2285 /* If we link a program (not a DSO), we'll get rid of unnecessary
2286 PLT entries; we point to the actual symbols -- even for pic
2287 relocs, because a program built with -fpic should have the same
2288 result as one built without -fpic, specifically considering weak
2290 FIXME: m68k and i386 differ here, for unclear reasons. */
2294 /* This case can occur if we saw a PLT reloc in an input file,
2295 but the symbol was not defined by a dynamic object. In such
2296 a case, we don't actually need to build a procedure linkage
2297 table, and we can just do an absolute or PC reloc instead, or
2298 change a .got.plt index to a .got index for GOTPLT relocs. */
2299 BFD_ASSERT (h->needs_plt);
2301 h->plt.offset = (bfd_vma) -1;
2303 elf_cris_adjust_gotplt_to_got ((struct
2304 elf_cris_link_hash_entry *) h,
2308 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2309 where a pointer-equivalent symbol was unimportant (i.e. more
2310 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2311 of the PLT. We can't for the executable, because the GOT
2312 entries will point to the PLT there (and be constant). */
2314 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2318 /* GC or folding may have rendered this entry unused. */
2319 if (h->plt.refcount <= 0)
2322 h->plt.offset = (bfd_vma) -1;
2326 /* Make sure this symbol is output as a dynamic symbol. */
2327 if (h->dynindx == -1)
2329 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2333 s = bfd_get_section_by_name (dynobj, ".plt");
2334 BFD_ASSERT (s != NULL);
2336 /* If this is the first .plt entry, make room for the special
2339 s->size += plt_entry_size;
2341 /* If this symbol is not defined in a regular file, and we are
2342 not generating a shared library, then set the symbol to this
2343 location in the .plt. */
2347 h->root.u.def.section = s;
2348 h->root.u.def.value = s->size;
2351 /* If there's already a GOT entry, use that, not a .got.plt. A
2352 GOT field still has a reference count when we get here; it's
2353 not yet changed to an offset. We can't do this for an
2354 executable, because then the reloc associated with the PLT
2355 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2356 this to elf_cris_try_fold_plt_to_got. */
2357 if (info->shared && h->got.refcount > 0)
2359 h->got.refcount += h->plt.refcount;
2361 /* Mark the PLT offset to use the GOT entry by setting the low
2362 bit in the plt offset; it is always a multiple of
2363 plt_entry_size (which is at least a multiple of 2). */
2364 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2366 /* Change the PLT refcount to an offset. */
2367 h->plt.offset = s->size;
2369 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2370 that the got entry should be used instead. */
2371 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2372 h)->gotplt_offset == 0);
2374 /* Make room for this entry. */
2375 s->size += plt_entry_size;
2380 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2381 h->plt.offset = s->size;
2383 /* Make room for this entry. */
2384 s->size += plt_entry_size;
2386 /* We also need to make an entry in the .got.plt section, which
2387 will be placed in the .got section by the linker script. */
2388 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2389 = elf_cris_hash_table (info)->next_gotplt_entry;
2390 elf_cris_hash_table (info)->next_gotplt_entry += 4;
2392 s = bfd_get_section_by_name (dynobj, ".got.plt");
2393 BFD_ASSERT (s != NULL);
2396 /* We also need to make an entry in the .rela.plt section. */
2398 s = bfd_get_section_by_name (dynobj, ".rela.plt");
2399 BFD_ASSERT (s != NULL);
2400 s->size += sizeof (Elf32_External_Rela);
2405 /* Reinitialize the plt offset now that it is not used as a reference
2407 h->plt.offset = (bfd_vma) -1;
2409 /* If this is a weak symbol, and there is a real definition, the
2410 processor independent code will have arranged for us to see the
2411 real definition first, and we can just use the same value. */
2412 if (h->u.weakdef != NULL)
2414 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
2415 || h->u.weakdef->root.type == bfd_link_hash_defweak);
2416 h->root.u.def.section = h->u.weakdef->root.u.def.section;
2417 h->root.u.def.value = h->u.weakdef->root.u.def.value;
2421 /* This is a reference to a symbol defined by a dynamic object which
2422 is not a function. */
2424 /* If we are creating a shared library, we must presume that the
2425 only references to the symbol are via the global offset table.
2426 For such cases we need not do anything here; the relocations will
2427 be handled correctly by relocate_section. */
2431 /* If there are no references to this symbol that do not use the
2432 GOT, we don't need to generate a copy reloc. */
2433 if (!h->non_got_ref)
2438 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
2439 h->root.root.string);
2443 /* We must allocate the symbol in our .dynbss section, which will
2444 become part of the .bss section of the executable. There will be
2445 an entry for this symbol in the .dynsym section. The dynamic
2446 object will contain position independent code, so all references
2447 from the dynamic object to this symbol will go through the global
2448 offset table. The dynamic linker will use the .dynsym entry to
2449 determine the address it must put in the global offset table, so
2450 both the dynamic object and the regular object will refer to the
2451 same memory location for the variable. */
2453 s = bfd_get_section_by_name (dynobj, ".dynbss");
2454 BFD_ASSERT (s != NULL);
2456 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
2457 copy the initial value out of the dynamic object and into the
2458 runtime process image. We need to remember the offset into the
2459 .rela.bss section we are going to use. */
2460 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
2464 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
2465 BFD_ASSERT (srel != NULL);
2466 srel->size += sizeof (Elf32_External_Rela);
2470 return _bfd_elf_adjust_dynamic_copy (h, s);
2473 /* Look through the relocs for a section during the first phase. */
2476 cris_elf_check_relocs (abfd, info, sec, relocs)
2478 struct bfd_link_info *info;
2480 const Elf_Internal_Rela *relocs;
2483 Elf_Internal_Shdr *symtab_hdr;
2484 struct elf_link_hash_entry **sym_hashes;
2485 bfd_signed_vma *local_got_refcounts;
2486 const Elf_Internal_Rela *rel;
2487 const Elf_Internal_Rela *rel_end;
2492 if (info->relocatable)
2495 dynobj = elf_hash_table (info)->dynobj;
2496 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2497 sym_hashes = elf_sym_hashes (abfd);
2498 local_got_refcounts = elf_local_got_refcounts (abfd);
2504 rel_end = relocs + sec->reloc_count;
2505 for (rel = relocs; rel < rel_end; rel++)
2507 struct elf_link_hash_entry *h;
2508 unsigned long r_symndx;
2509 enum elf_cris_reloc_type r_type;
2511 r_symndx = ELF32_R_SYM (rel->r_info);
2512 if (r_symndx < symtab_hdr->sh_info)
2516 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2517 while (h->root.type == bfd_link_hash_indirect
2518 || h->root.type == bfd_link_hash_warning)
2519 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2522 r_type = ELF32_R_TYPE (rel->r_info);
2524 /* Some relocs require linker-created sections; we need to hang them
2525 on the first input bfd we found that contained dynamic relocs. */
2530 case R_CRIS_32_GOTREL:
2531 case R_CRIS_32_PLT_GOTREL:
2532 case R_CRIS_32_PLT_PCREL:
2533 case R_CRIS_16_GOTPLT:
2534 case R_CRIS_32_GOTPLT:
2537 elf_hash_table (info)->dynobj = dynobj = abfd;
2539 /* We could handle this if we can get a handle on the
2540 output bfd in elf_cris_adjust_dynamic_symbol. Failing
2541 that, we must insist on dynobj being a specific mach. */
2542 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
2544 (*_bfd_error_handler)
2545 (_("%B, section %A:\n v10/v32 compatible object %s"
2546 " must not contain a PIC relocation"),
2551 /* Create the .got section, so we can assume it's always
2552 present whenever there's a dynobj. */
2553 if (!_bfd_elf_create_got_section (dynobj, info))
2562 /* Some relocs require a global offset table (but perhaps not a
2563 specific GOT entry). */
2566 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
2567 entry only for local symbols. Unfortunately, we don't know
2568 until later on if there's a version script that forces the
2569 symbol local. We must have the .rela.got section in place
2570 before we know if the symbol looks global now, so we need
2571 to treat the reloc just like for R_CRIS_16_GOT and
2573 case R_CRIS_16_GOTPLT:
2574 case R_CRIS_32_GOTPLT:
2578 && (h != NULL || info->shared))
2580 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2581 if (srelgot == NULL)
2583 srelgot = bfd_make_section_with_flags (dynobj,
2589 | SEC_LINKER_CREATED
2592 || !bfd_set_section_alignment (dynobj, srelgot, 2))
2598 case R_CRIS_32_GOTREL:
2599 case R_CRIS_32_PLT_GOTREL:
2601 sgot = bfd_get_section_by_name (dynobj, ".got");
2603 if (local_got_refcounts == NULL)
2607 /* We use index local_got_refcounts[-1] to count all
2608 GOT-relative relocations that do not have explicit
2610 amt = symtab_hdr->sh_info + 1;
2611 amt *= sizeof (bfd_signed_vma);
2612 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
2613 if (local_got_refcounts == NULL)
2616 local_got_refcounts++;
2617 elf_local_got_refcounts (abfd) = local_got_refcounts;
2627 case R_CRIS_16_GOTPLT:
2628 case R_CRIS_32_GOTPLT:
2629 /* Mark that we need a GOT entry if the PLT entry (and its GOT
2630 entry) is eliminated. We can only do this for a non-local
2634 ((struct elf_cris_link_hash_entry *) h)->gotplt_refcount++;
2635 goto handle_gotplt_reloc;
2637 /* If h is NULL then this is a local symbol, and we must make a
2638 GOT entry for it, so handle it like a GOT reloc. */
2643 /* This symbol requires a global offset table entry. */
2646 if (h->got.refcount == 0)
2648 /* Make sure this symbol is output as a dynamic symbol. */
2649 if (h->dynindx == -1)
2651 if (!bfd_elf_link_record_dynamic_symbol (info, h))
2655 /* Allocate space in the .got section. */
2657 /* Allocate relocation space. */
2658 srelgot->size += sizeof (Elf32_External_Rela);
2664 /* This is a global offset table entry for a local symbol. */
2665 if (local_got_refcounts[r_symndx] == 0)
2670 /* If we are generating a shared object, we need to
2671 output a R_CRIS_RELATIVE reloc so that the dynamic
2672 linker can adjust this GOT entry. */
2673 srelgot->size += sizeof (Elf32_External_Rela);
2676 local_got_refcounts[r_symndx]++;
2680 case R_CRIS_32_GOTREL:
2681 /* This reference requires a global offset table.
2682 FIXME: The actual refcount isn't used currently; the .got
2683 section can't be removed if there were any references in the
2685 local_got_refcounts[-1]++;
2688 handle_gotplt_reloc:
2690 case R_CRIS_32_PLT_GOTREL:
2691 /* This reference requires a global offset table. */
2692 local_got_refcounts[-1]++;
2695 case R_CRIS_32_PLT_PCREL:
2696 /* This symbol requires a procedure linkage table entry. We
2697 actually build the entry in adjust_dynamic_symbol,
2698 because this might be a case of linking PIC code which is
2699 never referenced by a dynamic object, in which case we
2700 don't need to generate a procedure linkage table entry
2703 /* Beware: if we'd check for visibility of the symbol here
2704 (and not marking the need for a PLT when non-visible), we'd
2705 get into trouble with keeping handling consistent with
2706 regards to relocs found before definition and GOTPLT
2707 handling. Eliminable PLT entries will be dealt with later
2719 /* Let's help debug shared library creation. Any of these
2720 relocs can be used in shared libs, but pages containing them
2721 cannot be shared. Don't warn for sections we don't care
2722 about, such as debug sections or non-constant sections. We
2723 can't help tables of (global) function pointers, for example,
2724 though they must be emitted in a data section to avoid having
2725 impure text sections. */
2727 && (sec->flags & SEC_ALLOC) != 0
2728 && (sec->flags & SEC_READONLY) != 0)
2730 /* FIXME: How do we make this optionally a warning only? */
2731 (*_bfd_error_handler)
2732 (_("%B, section %A:\n relocation %s should not"
2733 " be used in a shared object; recompile with -fPIC"),
2736 cris_elf_howto_table[r_type].name);
2740 case R_CRIS_8_PCREL:
2741 case R_CRIS_16_PCREL:
2742 case R_CRIS_32_PCREL:
2747 /* Make sure a plt entry is created for this symbol if it
2748 turns out to be a function defined by a dynamic object. */
2749 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
2753 /* If we are creating a shared library and this is not a local
2754 symbol, we need to copy the reloc into the shared library.
2755 However when linking with -Bsymbolic and this is a global
2756 symbol which is defined in an object we are including in the
2757 link (i.e., DEF_REGULAR is set), then we can resolve the
2758 reloc directly. At this point we have not seen all the input
2759 files, so it is possible that DEF_REGULAR is not set now but
2760 will be set later (it is never cleared). In case of a weak
2761 definition, DEF_REGULAR may be cleared later by a strong
2762 definition in a shared library. We account for that
2763 possibility below by storing information in the relocs_copied
2764 field of the hash table entry. A similar situation occurs
2765 when creating shared libraries and symbol visibility changes
2766 render the symbol local. */
2768 /* No need to do anything if we're not creating a shared object. */
2772 /* We don't need to handle relocs into sections not going into
2773 the "real" output. */
2774 if ((sec->flags & SEC_ALLOC) == 0)
2777 /* We can only eliminate PC-relative relocs. */
2778 if (r_type == R_CRIS_8_PCREL
2779 || r_type == R_CRIS_16_PCREL
2780 || r_type == R_CRIS_32_PCREL)
2782 /* If the symbol is local, then we can eliminate the reloc. */
2783 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
2786 /* If this is with -Bsymbolic and the symbol isn't weak, and
2787 is defined by an ordinary object (the ones we include in
2788 this shared library) then we can also eliminate the
2789 reloc. See comment above for more eliminable cases which
2790 we can't identify at this time. */
2792 && h->root.type != bfd_link_hash_defweak
2796 if ((sec->flags & SEC_READONLY) != 0)
2798 /* FIXME: How do we make this optionally a warning only? */
2799 (*_bfd_error_handler)
2800 (_("%B, section %A:\n relocation %s should not be used"
2801 " in a shared object; recompile with -fPIC"),
2804 cris_elf_howto_table[r_type].name);
2808 /* We create a reloc section in dynobj and make room for this
2814 name = (bfd_elf_string_from_elf_section
2816 elf_elfheader (abfd)->e_shstrndx,
2817 elf_section_data (sec)->rel_hdr.sh_name));
2821 BFD_ASSERT (CONST_STRNEQ (name, ".rela")
2822 && strcmp (bfd_get_section_name (abfd, sec),
2825 sreloc = bfd_get_section_by_name (dynobj, name);
2828 sreloc = bfd_make_section_with_flags (dynobj, name,
2833 | SEC_LINKER_CREATED
2836 || !bfd_set_section_alignment (dynobj, sreloc, 2))
2839 if (sec->flags & SEC_READONLY)
2840 info->flags |= DF_TEXTREL;
2843 sreloc->size += sizeof (Elf32_External_Rela);
2845 /* If we are linking with -Bsymbolic, we count the number of PC
2846 relative relocations we have entered for this symbol, so that
2847 we can discard them again if the symbol is later defined by a
2848 regular object. We know that h is really a pointer to an
2849 elf_cris_link_hash_entry. */
2850 if ((r_type == R_CRIS_8_PCREL
2851 || r_type == R_CRIS_16_PCREL
2852 || r_type == R_CRIS_32_PCREL)
2855 struct elf_cris_link_hash_entry *eh;
2856 struct elf_cris_pcrel_relocs_copied *p;
2858 eh = (struct elf_cris_link_hash_entry *) h;
2860 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
2861 if (p->section == sreloc)
2866 p = ((struct elf_cris_pcrel_relocs_copied *)
2867 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
2870 p->next = eh->pcrel_relocs_copied;
2871 eh->pcrel_relocs_copied = p;
2872 p->section = sreloc;
2880 /* This relocation describes the C++ object vtable hierarchy.
2881 Reconstruct it for later use during GC. */
2882 case R_CRIS_GNU_VTINHERIT:
2883 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
2887 /* This relocation describes which C++ vtable entries are actually
2888 used. Record for later use during GC. */
2889 case R_CRIS_GNU_VTENTRY:
2890 BFD_ASSERT (h != NULL);
2892 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
2897 /* Other relocs do not appear here. */
2898 bfd_set_error (bfd_error_bad_value);
2906 /* Set the sizes of the dynamic sections. */
2909 elf_cris_size_dynamic_sections (output_bfd, info)
2910 bfd *output_bfd ATTRIBUTE_UNUSED;
2911 struct bfd_link_info *info;
2918 dynobj = elf_hash_table (info)->dynobj;
2919 BFD_ASSERT (dynobj != NULL);
2921 if (elf_hash_table (info)->dynamic_sections_created)
2923 /* Set the contents of the .interp section to the interpreter. */
2924 if (info->executable)
2926 s = bfd_get_section_by_name (dynobj, ".interp");
2927 BFD_ASSERT (s != NULL);
2928 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
2929 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
2934 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
2935 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2936 elf_cris_adjust_gotplt_to_got,
2939 /* We may have created entries in the .rela.got section.
2940 However, if we are not creating the dynamic sections, we will
2941 not actually use these entries. Reset the size of .rela.got,
2942 which will cause it to get stripped from the output file
2944 s = bfd_get_section_by_name (dynobj, ".rela.got");
2949 /* If this is a -Bsymbolic shared link, then we need to discard all PC
2950 relative relocs against symbols defined in a regular object. We
2951 allocated space for them in the check_relocs routine, but we will not
2952 fill them in in the relocate_section routine. We also discard space
2953 for relocs that have become for local symbols due to symbol
2954 visibility changes. For programs, we discard space for relocs for
2955 symbols not referenced by any dynamic object. */
2957 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2958 elf_cris_discard_excess_dso_dynamics,
2961 elf_cris_link_hash_traverse (elf_cris_hash_table (info),
2962 elf_cris_discard_excess_program_dynamics,
2965 /* The check_relocs and adjust_dynamic_symbol entry points have
2966 determined the sizes of the various dynamic sections. Allocate
2970 for (s = dynobj->sections; s != NULL; s = s->next)
2974 if ((s->flags & SEC_LINKER_CREATED) == 0)
2977 /* It's OK to base decisions on the section name, because none
2978 of the dynobj section names depend upon the input files. */
2979 name = bfd_get_section_name (dynobj, s);
2981 if (strcmp (name, ".plt") == 0)
2983 /* Remember whether there is a PLT. */
2986 else if (CONST_STRNEQ (name, ".rela"))
2990 /* Remember whether there are any reloc sections other
2992 if (strcmp (name, ".rela.plt") != 0)
2995 /* We use the reloc_count field as a counter if we need
2996 to copy relocs into the output file. */
3000 else if (! CONST_STRNEQ (name, ".got")
3001 && strcmp (name, ".dynbss") != 0)
3003 /* It's not one of our sections, so don't allocate space. */
3009 /* If we don't need this section, strip it from the
3010 output file. This is mostly to handle .rela.bss and
3011 .rela.plt. We must create both sections in
3012 create_dynamic_sections, because they must be created
3013 before the linker maps input sections to output
3014 sections. The linker does that before
3015 adjust_dynamic_symbol is called, and it is that
3016 function which decides whether anything needs to go
3017 into these sections. */
3018 s->flags |= SEC_EXCLUDE;
3022 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3025 /* Allocate memory for the section contents. We use bfd_zalloc here
3026 in case unused entries are not reclaimed before the section's
3027 contents are written out. This should not happen, but this way
3028 if it does, we will not write out garbage. For reloc sections,
3029 this will make entries have the type R_CRIS_NONE. */
3030 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3031 if (s->contents == NULL)
3035 if (elf_hash_table (info)->dynamic_sections_created)
3037 /* Add some entries to the .dynamic section. We fill in the
3038 values later, in elf_cris_finish_dynamic_sections, but we
3039 must add the entries now so that we get the correct size for
3040 the .dynamic section. The DT_DEBUG entry is filled in by the
3041 dynamic linker and used by the debugger. */
3042 #define add_dynamic_entry(TAG, VAL) \
3043 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3047 if (!add_dynamic_entry (DT_DEBUG, 0))
3053 if (!add_dynamic_entry (DT_PLTGOT, 0)
3054 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3055 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3056 || !add_dynamic_entry (DT_JMPREL, 0))
3062 if (!add_dynamic_entry (DT_RELA, 0)
3063 || !add_dynamic_entry (DT_RELASZ, 0)
3064 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3068 if ((info->flags & DF_TEXTREL) != 0)
3070 if (!add_dynamic_entry (DT_TEXTREL, 0))
3072 info->flags |= DF_TEXTREL;
3075 #undef add_dynamic_entry
3080 /* This function is called via elf_cris_link_hash_traverse if we are
3081 creating a shared object. In the -Bsymbolic case, it discards the
3082 space allocated to copy PC relative relocs against symbols which
3083 are defined in regular objects. For the normal non-symbolic case,
3084 we also discard space for relocs that have become local due to
3085 symbol visibility changes. We allocated space for them in the
3086 check_relocs routine, but we won't fill them in in the
3087 relocate_section routine. */
3090 elf_cris_discard_excess_dso_dynamics (h, inf)
3091 struct elf_cris_link_hash_entry *h;
3094 struct elf_cris_pcrel_relocs_copied *s;
3095 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3097 if (h->root.root.type == bfd_link_hash_warning)
3098 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3100 /* If a symbol has been forced local or we have found a regular
3101 definition for the symbolic link case, then we won't be needing
3103 if (h->root.def_regular
3104 && (h->root.forced_local
3107 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3108 s->section->size -= s->count * sizeof (Elf32_External_Rela);
3114 /* This function is called via elf_cris_link_hash_traverse if we are *not*
3115 creating a shared object. We discard space for relocs for symbols put
3116 in the .got, but which we found we do not have to resolve at run-time. */
3119 elf_cris_discard_excess_program_dynamics (h, inf)
3120 struct elf_cris_link_hash_entry *h;
3123 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3125 if (h->root.root.type == bfd_link_hash_warning)
3126 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3128 /* If we're not creating a shared library and have a symbol which is
3129 referred to by .got references, but the symbol is defined locally,
3130 (or rather, not defined by a DSO) then lose the reloc for the .got
3131 (don't allocate room for it). Likewise for relocs for something
3132 for which we create a PLT. */
3133 if (!h->root.def_dynamic
3134 || h->root.plt.refcount > 0)
3136 if (h->root.got.refcount > 0
3137 /* The size of this section is only valid and in sync with the
3138 various reference counts if we do dynamic; don't decrement it
3140 && elf_hash_table (info)->dynamic_sections_created)
3142 bfd *dynobj = elf_hash_table (info)->dynobj;
3145 BFD_ASSERT (dynobj != NULL);
3147 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3149 BFD_ASSERT (srelgot != NULL);
3151 srelgot->size -= sizeof (Elf32_External_Rela);
3154 /* If the locally-defined symbol isn't used by a DSO, then we don't
3155 have to export it as a dynamic symbol. This was already done for
3156 functions; doing this for all symbols would presumably not
3157 introduce new problems. Of course we don't do this if we're
3158 exporting all dynamic symbols. */
3159 if (! info->export_dynamic
3160 && h->root.dynindx != -1
3161 && !h->root.def_dynamic
3162 && !h->root.ref_dynamic)
3164 h->root.dynindx = -1;
3165 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
3166 h->root.dynstr_index);
3173 /* Reject a file depending on presence and expectation of prefixed
3174 underscores on symbols. */
3177 cris_elf_object_p (abfd)
3180 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
3183 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
3184 return (bfd_get_symbol_leading_char (abfd) == '_');
3186 return (bfd_get_symbol_leading_char (abfd) == 0);
3189 /* Mark presence or absence of leading underscore. Set machine type
3190 flags from mach type. */
3193 cris_elf_final_write_processing (abfd, linker)
3195 bfd_boolean linker ATTRIBUTE_UNUSED;
3197 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
3199 e_flags &= ~EF_CRIS_UNDERSCORE;
3200 if (bfd_get_symbol_leading_char (abfd) == '_')
3201 e_flags |= EF_CRIS_UNDERSCORE;
3203 switch (bfd_get_mach (abfd))
3205 case bfd_mach_cris_v0_v10:
3206 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
3209 case bfd_mach_cris_v10_v32:
3210 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
3213 case bfd_mach_cris_v32:
3214 e_flags |= EF_CRIS_VARIANT_V32;
3218 _bfd_abort (__FILE__, __LINE__,
3219 _("Unexpected machine number"));
3222 elf_elfheader (abfd)->e_flags = e_flags;
3225 /* Set the mach type from e_flags value. */
3228 cris_elf_set_mach_from_flags (abfd, flags)
3230 unsigned long flags;
3232 switch (flags & EF_CRIS_VARIANT_MASK)
3234 case EF_CRIS_VARIANT_ANY_V0_V10:
3235 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
3238 case EF_CRIS_VARIANT_V32:
3239 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
3242 case EF_CRIS_VARIANT_COMMON_V10_V32:
3243 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
3247 /* Since we don't recognize them, we obviously can't support them
3248 with this code; we'd have to require that all future handling
3249 would be optional. */
3250 bfd_set_error (bfd_error_wrong_format);
3257 /* Display the flags field. */
3260 cris_elf_print_private_bfd_data (abfd, ptr)
3264 FILE *file = (FILE *) ptr;
3266 BFD_ASSERT (abfd != NULL && ptr != NULL);
3268 _bfd_elf_print_private_bfd_data (abfd, ptr);
3270 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
3272 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
3273 fprintf (file, _(" [symbols have a _ prefix]"));
3274 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3275 == EF_CRIS_VARIANT_COMMON_V10_V32)
3276 fprintf (file, _(" [v10 and v32]"));
3277 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
3278 == EF_CRIS_VARIANT_V32)
3279 fprintf (file, _(" [v32]"));
3285 /* Don't mix files with and without a leading underscore. */
3288 cris_elf_merge_private_bfd_data (ibfd, obfd)
3294 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
3297 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3298 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3301 imach = bfd_get_mach (ibfd);
3303 if (! elf_flags_init (obfd))
3305 /* This happens when ld starts out with a 'blank' output file. */
3306 elf_flags_init (obfd) = TRUE;
3308 /* We ignore the linker-set mach, and instead set it according to
3309 the first input file. This would also happen if we could
3310 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
3311 This allows us to keep the same linker config across
3312 cris(v0..v10) and crisv32. The drawback is that we can't force
3313 the output type, which might be a sane thing to do for a
3314 v10+v32 compatibility object. */
3315 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3319 if (bfd_get_symbol_leading_char (ibfd)
3320 != bfd_get_symbol_leading_char (obfd))
3322 (*_bfd_error_handler)
3323 (bfd_get_symbol_leading_char (ibfd) == '_'
3324 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
3325 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
3327 bfd_set_error (bfd_error_bad_value);
3331 omach = bfd_get_mach (obfd);
3335 /* We can get an incompatible combination only if either is
3336 bfd_mach_cris_v32, and the other one isn't compatible. */
3337 if ((imach == bfd_mach_cris_v32
3338 && omach != bfd_mach_cris_v10_v32)
3339 || (omach == bfd_mach_cris_v32
3340 && imach != bfd_mach_cris_v10_v32))
3342 (*_bfd_error_handler)
3343 ((imach == bfd_mach_cris_v32)
3344 ? _("%B contains CRIS v32 code, incompatible"
3345 " with previous objects")
3346 : _("%B contains non-CRIS-v32 code, incompatible"
3347 " with previous objects"),
3349 bfd_set_error (bfd_error_bad_value);
3353 /* We don't have to check the case where the input is compatible
3354 with v10 and v32, because the output is already known to be set
3355 to the other (compatible) mach. */
3356 if (omach == bfd_mach_cris_v10_v32
3357 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
3364 /* Do side-effects of e_flags copying to obfd. */
3367 cris_elf_copy_private_bfd_data (ibfd, obfd)
3371 /* Call the base function. */
3372 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
3375 /* If output is big-endian for some obscure reason, stop here. */
3376 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
3379 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
3380 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
3383 /* Do what we really came here for. */
3384 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
3387 static enum elf_reloc_type_class
3388 elf_cris_reloc_type_class (rela)
3389 const Elf_Internal_Rela *rela;
3391 switch ((int) ELF32_R_TYPE (rela->r_info))
3393 case R_CRIS_RELATIVE:
3394 return reloc_class_relative;
3395 case R_CRIS_JUMP_SLOT:
3396 return reloc_class_plt;
3398 return reloc_class_copy;
3400 return reloc_class_normal;
3404 #define ELF_ARCH bfd_arch_cris
3405 #define ELF_MACHINE_CODE EM_CRIS
3406 #define ELF_MAXPAGESIZE 0x2000
3408 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
3409 #define TARGET_LITTLE_NAME "elf32-cris"
3410 #define elf_symbol_leading_char 0
3412 #define elf_info_to_howto_rel NULL
3413 #define elf_info_to_howto cris_info_to_howto_rela
3414 #define elf_backend_relocate_section cris_elf_relocate_section
3415 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
3416 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
3417 #define elf_backend_check_relocs cris_elf_check_relocs
3418 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
3419 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
3421 #define elf_backend_can_gc_sections 1
3422 #define elf_backend_can_refcount 1
3424 #define elf_backend_object_p cris_elf_object_p
3425 #define elf_backend_final_write_processing \
3426 cris_elf_final_write_processing
3427 #define bfd_elf32_bfd_print_private_bfd_data \
3428 cris_elf_print_private_bfd_data
3429 #define bfd_elf32_bfd_merge_private_bfd_data \
3430 cris_elf_merge_private_bfd_data
3431 #define bfd_elf32_bfd_copy_private_bfd_data \
3432 cris_elf_copy_private_bfd_data
3434 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
3435 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
3437 #define bfd_elf32_bfd_link_hash_table_create \
3438 elf_cris_link_hash_table_create
3439 #define elf_backend_adjust_dynamic_symbol \
3440 elf_cris_adjust_dynamic_symbol
3441 #define elf_backend_size_dynamic_sections \
3442 elf_cris_size_dynamic_sections
3443 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
3444 #define elf_backend_finish_dynamic_symbol \
3445 elf_cris_finish_dynamic_symbol
3446 #define elf_backend_finish_dynamic_sections \
3447 elf_cris_finish_dynamic_sections
3448 #define elf_backend_create_dynamic_sections \
3449 _bfd_elf_create_dynamic_sections
3450 #define bfd_elf32_bfd_final_link \
3451 bfd_elf_gc_common_final_link
3452 #define elf_backend_hide_symbol elf_cris_hide_symbol
3453 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
3455 #define elf_backend_want_got_plt 1
3456 #define elf_backend_plt_readonly 1
3457 #define elf_backend_want_plt_sym 0
3458 #define elf_backend_got_header_size 12
3460 /* Later, we my want to optimize RELA entries into REL entries for dynamic
3461 linking and libraries (if it's a win of any significance). Until then,
3462 take the easy route. */
3463 #define elf_backend_may_use_rel_p 0
3464 #define elf_backend_may_use_rela_p 1
3465 #define elf_backend_rela_normal 1
3467 #include "elf32-target.h"
3469 #undef TARGET_LITTLE_SYM
3470 #undef TARGET_LITTLE_NAME
3471 #undef elf_symbol_leading_char
3473 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
3474 #define TARGET_LITTLE_NAME "elf32-us-cris"
3475 #define elf_symbol_leading_char '_'
3477 #define elf32_bed elf32_us_cris_bed
3479 #include "elf32-target.h"
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