1 /* CRIS-specific support for 32-bit ELF.
2 Copyright 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009,
3 2010 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. */
32 /* Forward declarations. */
33 static reloc_howto_type * cris_reloc_type_lookup
34 PARAMS ((bfd *abfd, bfd_reloc_code_real_type code));
36 static void cris_info_to_howto_rela
37 PARAMS ((bfd *, arelent *, Elf_Internal_Rela *));
39 static bfd_reloc_status_type cris_elf_pcrel_reloc
40 PARAMS ((bfd *, arelent *, asymbol *, PTR, asection *, bfd *, char **));
42 static bfd_boolean cris_elf_grok_prstatus
43 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
45 static bfd_boolean cris_elf_grok_psinfo
46 PARAMS ((bfd *abfd, Elf_Internal_Note *note));
48 static bfd_boolean cris_elf_relocate_section
49 PARAMS ((bfd *, struct bfd_link_info *, bfd *, asection *, bfd_byte *,
50 Elf_Internal_Rela *, Elf_Internal_Sym *, asection **));
52 static bfd_reloc_status_type cris_final_link_relocate
53 PARAMS ((reloc_howto_type *, bfd *, asection *, bfd_byte *,
54 Elf_Internal_Rela *, bfd_vma));
56 static bfd_boolean cris_elf_object_p PARAMS ((bfd *));
58 static void cris_elf_final_write_processing PARAMS ((bfd *, bfd_boolean));
60 static bfd_boolean cris_elf_set_mach_from_flags
61 PARAMS ((bfd *, unsigned long int));
63 static bfd_boolean cris_elf_print_private_bfd_data PARAMS ((bfd *, PTR));
65 static bfd_boolean cris_elf_merge_private_bfd_data PARAMS ((bfd *, bfd *));
66 static bfd_boolean cris_elf_copy_private_bfd_data PARAMS ((bfd *, bfd *));
68 struct elf_cris_link_hash_entry;
69 static bfd_boolean elf_cris_discard_excess_dso_dynamics
70 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
71 static bfd_boolean elf_cris_discard_excess_program_dynamics
72 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
73 static bfd_boolean elf_cris_adjust_gotplt_to_got
74 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
75 static bfd_boolean elf_cris_try_fold_plt_to_got
76 PARAMS ((struct elf_cris_link_hash_entry *, PTR));
77 static struct bfd_hash_entry *elf_cris_link_hash_newfunc
78 PARAMS ((struct bfd_hash_entry *, struct bfd_hash_table *, const char *));
79 static struct bfd_link_hash_table *elf_cris_link_hash_table_create
81 static bfd_boolean elf_cris_adjust_dynamic_symbol
82 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *));
83 static bfd_boolean cris_elf_check_relocs
84 PARAMS ((bfd *, struct bfd_link_info *, asection *,
85 const Elf_Internal_Rela *));
87 static bfd_boolean elf_cris_size_dynamic_sections
88 PARAMS ((bfd *, struct bfd_link_info *));
89 static bfd_boolean elf_cris_finish_dynamic_symbol
90 PARAMS ((bfd *, struct bfd_link_info *, struct elf_link_hash_entry *,
92 static bfd_boolean elf_cris_finish_dynamic_sections
93 PARAMS ((bfd *, struct bfd_link_info *));
94 static void elf_cris_hide_symbol
95 PARAMS ((struct bfd_link_info *, struct elf_link_hash_entry *, bfd_boolean));
96 static enum elf_reloc_type_class elf_cris_reloc_type_class
97 PARAMS ((const Elf_Internal_Rela *));
99 static reloc_howto_type cris_elf_howto_table [] =
101 /* This reloc does nothing. */
102 HOWTO (R_CRIS_NONE, /* type */
104 2, /* size (0 = byte, 1 = short, 2 = long) */
106 FALSE, /* pc_relative */
108 complain_overflow_bitfield, /* complain_on_overflow */
109 bfd_elf_generic_reloc, /* special_function */
110 "R_CRIS_NONE", /* name */
111 FALSE, /* partial_inplace */
114 FALSE), /* pcrel_offset */
116 /* An 8 bit absolute relocation. */
117 HOWTO (R_CRIS_8, /* type */
119 0, /* size (0 = byte, 1 = short, 2 = long) */
121 FALSE, /* pc_relative */
123 complain_overflow_bitfield, /* complain_on_overflow */
124 bfd_elf_generic_reloc, /* special_function */
125 "R_CRIS_8", /* name */
126 FALSE, /* partial_inplace */
127 0x0000, /* src_mask */
128 0x00ff, /* dst_mask */
129 FALSE), /* pcrel_offset */
131 /* A 16 bit absolute relocation. */
132 HOWTO (R_CRIS_16, /* type */
134 1, /* size (0 = byte, 1 = short, 2 = long) */
136 FALSE, /* pc_relative */
138 complain_overflow_bitfield, /* complain_on_overflow */
139 bfd_elf_generic_reloc, /* special_function */
140 "R_CRIS_16", /* name */
141 FALSE, /* partial_inplace */
142 0x00000000, /* src_mask */
143 0x0000ffff, /* dst_mask */
144 FALSE), /* pcrel_offset */
146 /* A 32 bit absolute relocation. */
147 HOWTO (R_CRIS_32, /* type */
149 2, /* size (0 = byte, 1 = short, 2 = long) */
151 FALSE, /* pc_relative */
153 /* We don't want overflow complaints for 64-bit vma builds
154 for e.g. sym+0x40000000 (or actually sym-0xc0000000 in
155 32-bit ELF) where sym=0xc0001234.
156 Don't do this for the PIC relocs, as we don't expect to
157 see them with large offsets. */
158 complain_overflow_dont, /* complain_on_overflow */
159 bfd_elf_generic_reloc, /* special_function */
160 "R_CRIS_32", /* name */
161 FALSE, /* partial_inplace */
162 0x00000000, /* src_mask */
163 0xffffffff, /* dst_mask */
164 FALSE), /* pcrel_offset */
166 /* An 8 bit PC-relative relocation. */
167 HOWTO (R_CRIS_8_PCREL, /* type */
169 0, /* size (0 = byte, 1 = short, 2 = long) */
171 TRUE, /* pc_relative */
173 complain_overflow_bitfield, /* complain_on_overflow */
174 cris_elf_pcrel_reloc, /* special_function */
175 "R_CRIS_8_PCREL", /* name */
176 FALSE, /* partial_inplace */
177 0x0000, /* src_mask */
178 0x00ff, /* dst_mask */
179 TRUE), /* pcrel_offset */
181 /* A 16 bit PC-relative relocation. */
182 HOWTO (R_CRIS_16_PCREL, /* type */
184 1, /* size (0 = byte, 1 = short, 2 = long) */
186 TRUE, /* pc_relative */
188 complain_overflow_bitfield, /* complain_on_overflow */
189 cris_elf_pcrel_reloc, /* special_function */
190 "R_CRIS_16_PCREL", /* name */
191 FALSE, /* partial_inplace */
192 0x00000000, /* src_mask */
193 0x0000ffff, /* dst_mask */
194 TRUE), /* pcrel_offset */
196 /* A 32 bit PC-relative relocation. */
197 HOWTO (R_CRIS_32_PCREL, /* type */
199 2, /* size (0 = byte, 1 = short, 2 = long) */
201 TRUE, /* pc_relative */
203 complain_overflow_bitfield, /* complain_on_overflow */
204 cris_elf_pcrel_reloc, /* special_function */
205 "R_CRIS_32_PCREL", /* name */
206 FALSE, /* partial_inplace */
207 0x00000000, /* src_mask */
208 0xffffffff, /* dst_mask */
209 TRUE), /* pcrel_offset */
211 /* GNU extension to record C++ vtable hierarchy. */
212 HOWTO (R_CRIS_GNU_VTINHERIT, /* type */
214 2, /* size (0 = byte, 1 = short, 2 = long) */
216 FALSE, /* pc_relative */
218 complain_overflow_dont, /* complain_on_overflow */
219 NULL, /* special_function */
220 "R_CRIS_GNU_VTINHERIT", /* name */
221 FALSE, /* partial_inplace */
224 FALSE), /* pcrel_offset */
226 /* GNU extension to record C++ vtable member usage. */
227 HOWTO (R_CRIS_GNU_VTENTRY, /* type */
229 2, /* size (0 = byte, 1 = short, 2 = long) */
231 FALSE, /* pc_relative */
233 complain_overflow_dont, /* complain_on_overflow */
234 _bfd_elf_rel_vtable_reloc_fn, /* special_function */
235 "R_CRIS_GNU_VTENTRY", /* name */
236 FALSE, /* partial_inplace */
239 FALSE), /* pcrel_offset */
241 /* This is used only by the dynamic linker. The symbol should exist
242 both in the object being run and in some shared library. The
243 dynamic linker copies the data addressed by the symbol from the
244 shared library into the object, because the object being
245 run has to have the data at some particular address. */
246 HOWTO (R_CRIS_COPY, /* type */
248 2, /* size (0 = byte, 1 = short, 2 = long) */
250 FALSE, /* pc_relative */
252 complain_overflow_bitfield, /* complain_on_overflow */
253 bfd_elf_generic_reloc, /* special_function */
254 "R_CRIS_COPY", /* name */
255 FALSE, /* partial_inplace */
258 FALSE), /* pcrel_offset */
260 /* Like R_CRIS_32, but used when setting global offset table entries. */
261 HOWTO (R_CRIS_GLOB_DAT, /* type */
263 2, /* size (0 = byte, 1 = short, 2 = long) */
265 FALSE, /* pc_relative */
267 complain_overflow_bitfield, /* complain_on_overflow */
268 bfd_elf_generic_reloc, /* special_function */
269 "R_CRIS_GLOB_DAT", /* name */
270 FALSE, /* partial_inplace */
272 0xffffffff, /* dst_mask */
273 FALSE), /* pcrel_offset */
275 /* Marks a procedure linkage table entry for a symbol. */
276 HOWTO (R_CRIS_JUMP_SLOT, /* type */
278 2, /* size (0 = byte, 1 = short, 2 = long) */
280 FALSE, /* pc_relative */
282 complain_overflow_bitfield, /* complain_on_overflow */
283 bfd_elf_generic_reloc, /* special_function */
284 "R_CRIS_JUMP_SLOT", /* name */
285 FALSE, /* partial_inplace */
288 FALSE), /* pcrel_offset */
290 /* Used only by the dynamic linker. When the object is run, this
291 longword is set to the load address of the object, plus the
293 HOWTO (R_CRIS_RELATIVE, /* type */
295 2, /* size (0 = byte, 1 = short, 2 = long) */
297 FALSE, /* pc_relative */
299 complain_overflow_bitfield, /* complain_on_overflow */
300 bfd_elf_generic_reloc, /* special_function */
301 "R_CRIS_RELATIVE", /* name */
302 FALSE, /* partial_inplace */
304 0xffffffff, /* dst_mask */
305 FALSE), /* pcrel_offset */
307 /* Like R_CRIS_32, but referring to the GOT table entry for the symbol. */
308 HOWTO (R_CRIS_16_GOT, /* type */
310 1, /* size (0 = byte, 1 = short, 2 = long) */
312 FALSE, /* pc_relative */
314 complain_overflow_bitfield, /* complain_on_overflow */
315 bfd_elf_generic_reloc, /* special_function */
316 "R_CRIS_16_GOT", /* name */
317 FALSE, /* partial_inplace */
319 0xffff, /* dst_mask */
320 FALSE), /* pcrel_offset */
322 HOWTO (R_CRIS_32_GOT, /* type */
324 2, /* size (0 = byte, 1 = short, 2 = long) */
326 FALSE, /* pc_relative */
328 complain_overflow_bitfield, /* complain_on_overflow */
329 bfd_elf_generic_reloc, /* special_function */
330 "R_CRIS_32_GOT", /* name */
331 FALSE, /* partial_inplace */
333 0xffffffff, /* dst_mask */
334 FALSE), /* pcrel_offset */
336 /* Like R_CRIS_32_GOT, but referring to (and requesting a) PLT part of
337 the GOT table for the symbol. */
338 HOWTO (R_CRIS_16_GOTPLT, /* type */
340 1, /* size (0 = byte, 1 = short, 2 = long) */
342 FALSE, /* pc_relative */
344 complain_overflow_bitfield, /* complain_on_overflow */
345 bfd_elf_generic_reloc, /* special_function */
346 "R_CRIS_16_GOTPLT", /* name */
347 FALSE, /* partial_inplace */
349 0xffff, /* dst_mask */
350 FALSE), /* pcrel_offset */
352 HOWTO (R_CRIS_32_GOTPLT, /* type */
354 2, /* size (0 = byte, 1 = short, 2 = long) */
356 FALSE, /* pc_relative */
358 complain_overflow_bitfield, /* complain_on_overflow */
359 bfd_elf_generic_reloc, /* special_function */
360 "R_CRIS_32_GOTPLT", /* name */
361 FALSE, /* partial_inplace */
363 0xffffffff, /* dst_mask */
364 FALSE), /* pcrel_offset */
366 /* A 32-bit offset from GOT to (local const) symbol: no GOT entry should
368 HOWTO (R_CRIS_32_GOTREL, /* type */
370 2, /* size (0 = byte, 1 = short, 2 = long) */
372 FALSE, /* pc_relative */
374 complain_overflow_bitfield, /* complain_on_overflow */
375 bfd_elf_generic_reloc, /* special_function */
376 "R_CRIS_32_GOTREL", /* name */
377 FALSE, /* partial_inplace */
379 0xffffffff, /* dst_mask */
380 FALSE), /* pcrel_offset */
382 /* A 32-bit offset from GOT to entry for this symbol in PLT and request
383 to create PLT entry for symbol. */
384 HOWTO (R_CRIS_32_PLT_GOTREL, /* type */
386 2, /* size (0 = byte, 1 = short, 2 = long) */
388 FALSE, /* pc_relative */
390 complain_overflow_bitfield, /* complain_on_overflow */
391 bfd_elf_generic_reloc, /* special_function */
392 "R_CRIS_32_PLT_GOTREL", /* name */
393 FALSE, /* partial_inplace */
395 0xffffffff, /* dst_mask */
396 FALSE), /* pcrel_offset */
398 /* A 32-bit offset from PC (location after the relocation) + addend to
399 entry for this symbol in PLT and request to create PLT entry for
401 HOWTO (R_CRIS_32_PLT_PCREL, /* type */
403 2, /* size (0 = byte, 1 = short, 2 = long) */
405 TRUE, /* pc_relative */
407 complain_overflow_bitfield, /* complain_on_overflow */
408 cris_elf_pcrel_reloc, /* special_function */
409 "R_CRIS_32_PLT_PCREL", /* name */
410 FALSE, /* partial_inplace */
412 0xffffffff, /* dst_mask */
413 TRUE), /* pcrel_offset */
415 /* We don't handle these in any special manner and cross-format
416 linking is not supported; just recognize them enough to pass them
417 around. FIXME: do the same for most PIC relocs and add sanity
418 tests to actually refuse gracefully to handle these and PIC
419 relocs for cross-format linking. */
420 #define TLSHOWTO32(name) \
421 HOWTO (name, 0, 2, 32, FALSE, 0, complain_overflow_bitfield, \
422 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffffffff, FALSE)
423 #define TLSHOWTO16X(name, X) \
424 HOWTO (name, 0, 1, 16, FALSE, 0, complain_overflow_ ## X, \
425 bfd_elf_generic_reloc, #name, FALSE, 0, 0xffff, FALSE)
426 #define TLSHOWTO16(name) TLSHOWTO16X(name, unsigned)
427 #define TLSHOWTO16S(name) TLSHOWTO16X(name, signed)
429 TLSHOWTO32 (R_CRIS_32_GOT_GD),
430 TLSHOWTO16 (R_CRIS_16_GOT_GD),
431 TLSHOWTO32 (R_CRIS_32_GD),
432 TLSHOWTO32 (R_CRIS_DTP),
433 TLSHOWTO32 (R_CRIS_32_DTPREL),
434 TLSHOWTO16S (R_CRIS_16_DTPREL),
435 TLSHOWTO32 (R_CRIS_32_GOT_TPREL),
436 TLSHOWTO16S (R_CRIS_16_GOT_TPREL),
437 TLSHOWTO32 (R_CRIS_32_TPREL),
438 TLSHOWTO16S (R_CRIS_16_TPREL),
439 TLSHOWTO32 (R_CRIS_DTPMOD),
440 TLSHOWTO32 (R_CRIS_32_IE)
443 /* Map BFD reloc types to CRIS ELF reloc types. */
445 struct cris_reloc_map
447 bfd_reloc_code_real_type bfd_reloc_val;
448 unsigned int cris_reloc_val;
451 static const struct cris_reloc_map cris_reloc_map [] =
453 { BFD_RELOC_NONE, R_CRIS_NONE },
454 { BFD_RELOC_8, R_CRIS_8 },
455 { BFD_RELOC_16, R_CRIS_16 },
456 { BFD_RELOC_32, R_CRIS_32 },
457 { BFD_RELOC_8_PCREL, R_CRIS_8_PCREL },
458 { BFD_RELOC_16_PCREL, R_CRIS_16_PCREL },
459 { BFD_RELOC_32_PCREL, R_CRIS_32_PCREL },
460 { BFD_RELOC_VTABLE_INHERIT, R_CRIS_GNU_VTINHERIT },
461 { BFD_RELOC_VTABLE_ENTRY, R_CRIS_GNU_VTENTRY },
462 { BFD_RELOC_CRIS_COPY, R_CRIS_COPY },
463 { BFD_RELOC_CRIS_GLOB_DAT, R_CRIS_GLOB_DAT },
464 { BFD_RELOC_CRIS_JUMP_SLOT, R_CRIS_JUMP_SLOT },
465 { BFD_RELOC_CRIS_RELATIVE, R_CRIS_RELATIVE },
466 { BFD_RELOC_CRIS_16_GOT, R_CRIS_16_GOT },
467 { BFD_RELOC_CRIS_32_GOT, R_CRIS_32_GOT },
468 { BFD_RELOC_CRIS_16_GOTPLT, R_CRIS_16_GOTPLT },
469 { BFD_RELOC_CRIS_32_GOTPLT, R_CRIS_32_GOTPLT },
470 { BFD_RELOC_CRIS_32_GOTREL, R_CRIS_32_GOTREL },
471 { BFD_RELOC_CRIS_32_PLT_GOTREL, R_CRIS_32_PLT_GOTREL },
472 { BFD_RELOC_CRIS_32_PLT_PCREL, R_CRIS_32_PLT_PCREL },
473 { BFD_RELOC_CRIS_32_GOT_GD, R_CRIS_32_GOT_GD },
474 { BFD_RELOC_CRIS_16_GOT_GD, R_CRIS_16_GOT_GD },
475 { BFD_RELOC_CRIS_32_GD, R_CRIS_32_GD },
476 { BFD_RELOC_CRIS_DTP, R_CRIS_DTP },
477 { BFD_RELOC_CRIS_32_DTPREL, R_CRIS_32_DTPREL },
478 { BFD_RELOC_CRIS_16_DTPREL, R_CRIS_16_DTPREL },
479 { BFD_RELOC_CRIS_32_GOT_TPREL, R_CRIS_32_GOT_TPREL },
480 { BFD_RELOC_CRIS_16_GOT_TPREL, R_CRIS_16_GOT_TPREL },
481 { BFD_RELOC_CRIS_32_TPREL, R_CRIS_32_TPREL },
482 { BFD_RELOC_CRIS_16_TPREL, R_CRIS_16_TPREL },
483 { BFD_RELOC_CRIS_DTPMOD, R_CRIS_DTPMOD },
484 { BFD_RELOC_CRIS_32_IE, R_CRIS_32_IE }
487 static reloc_howto_type *
488 cris_reloc_type_lookup (abfd, code)
489 bfd * abfd ATTRIBUTE_UNUSED;
490 bfd_reloc_code_real_type code;
494 for (i = 0; i < sizeof (cris_reloc_map) / sizeof (cris_reloc_map[0]); i++)
495 if (cris_reloc_map [i].bfd_reloc_val == code)
496 return & cris_elf_howto_table [cris_reloc_map[i].cris_reloc_val];
501 static reloc_howto_type *
502 cris_reloc_name_lookup (bfd *abfd ATTRIBUTE_UNUSED, const char *r_name)
507 i < sizeof (cris_elf_howto_table) / sizeof (cris_elf_howto_table[0]);
509 if (cris_elf_howto_table[i].name != NULL
510 && strcasecmp (cris_elf_howto_table[i].name, r_name) == 0)
511 return &cris_elf_howto_table[i];
516 /* Set the howto pointer for an CRIS ELF reloc. */
519 cris_info_to_howto_rela (abfd, cache_ptr, dst)
520 bfd * abfd ATTRIBUTE_UNUSED;
522 Elf_Internal_Rela * dst;
524 enum elf_cris_reloc_type r_type;
526 r_type = ELF32_R_TYPE (dst->r_info);
527 BFD_ASSERT (r_type < (unsigned int) R_CRIS_max);
528 cache_ptr->howto = & cris_elf_howto_table [r_type];
531 bfd_reloc_status_type
532 cris_elf_pcrel_reloc (abfd, reloc_entry, symbol, data, input_section,
533 output_bfd, error_message)
534 bfd *abfd ATTRIBUTE_UNUSED;
535 arelent *reloc_entry;
537 PTR data ATTRIBUTE_UNUSED;
538 asection *input_section;
540 char **error_message ATTRIBUTE_UNUSED;
542 /* By default (using only bfd_elf_generic_reloc when linking to
543 non-ELF formats) PC-relative relocs are relative to the beginning
544 of the reloc. CRIS PC-relative relocs are relative to the position
545 *after* the reloc because that's what pre-CRISv32 PC points to
546 after reading an insn field with that reloc. (For CRISv32, PC is
547 actually relative to the start of the insn, but we keep the old
548 definition.) Still, we use as much generic machinery as we can.
550 Only adjust when doing a final link. */
551 if (output_bfd == (bfd *) NULL)
552 reloc_entry->addend -= 1 << reloc_entry->howto->size;
555 bfd_elf_generic_reloc (abfd, reloc_entry, symbol, data,
556 input_section, output_bfd, error_message);
559 /* Support for core dump NOTE sections.
560 The slightly unintuitive code layout is an attempt to keep at least
561 some similarities with other ports, hoping to simplify general
562 changes, while still keeping Linux/CRIS and Linux/CRISv32 code apart. */
565 cris_elf_grok_prstatus (abfd, note)
567 Elf_Internal_Note *note;
572 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
573 switch (note->descsz)
578 case 202: /* Linux/CRISv32 */
580 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
583 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 22);
592 switch (note->descsz)
597 case 214: /* Linux/CRIS */
599 elf_tdata (abfd)->core_signal = bfd_get_16 (abfd, note->descdata + 12);
602 elf_tdata (abfd)->core_lwpid = bfd_get_32 (abfd, note->descdata + 22);
611 /* Make a ".reg/999" section. */
612 return _bfd_elfcore_make_pseudosection (abfd, ".reg",
613 size, note->descpos + offset);
617 cris_elf_grok_psinfo (abfd, note)
619 Elf_Internal_Note *note;
621 if (bfd_get_mach (abfd) == bfd_mach_cris_v32)
622 switch (note->descsz)
627 case 124: /* Linux/CRISv32 elf_prpsinfo */
628 elf_tdata (abfd)->core_program
629 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
630 elf_tdata (abfd)->core_command
631 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
634 switch (note->descsz)
639 case 124: /* Linux/CRIS elf_prpsinfo */
640 elf_tdata (abfd)->core_program
641 = _bfd_elfcore_strndup (abfd, note->descdata + 28, 16);
642 elf_tdata (abfd)->core_command
643 = _bfd_elfcore_strndup (abfd, note->descdata + 44, 80);
646 /* Note that for some reason, a spurious space is tacked
647 onto the end of the args in some (at least one anyway)
648 implementations, so strip it off if it exists. */
651 char *command = elf_tdata (abfd)->core_command;
652 int n = strlen (command);
654 if (0 < n && command[n - 1] == ' ')
655 command[n - 1] = '\0';
661 /* The name of the dynamic interpreter. This is put in the .interp
664 #define ELF_DYNAMIC_INTERPRETER "/lib/ld.so.1"
666 /* The size in bytes of an entry in the procedure linkage table. */
668 #define PLT_ENTRY_SIZE 20
669 #define PLT_ENTRY_SIZE_V32 26
671 /* The first entry in an absolute procedure linkage table looks like this. */
673 static const bfd_byte elf_cris_plt0_entry[PLT_ENTRY_SIZE] =
676 0x7e, 0x7e, /* push mof. */
677 0x7f, 0x0d, /* (dip [pc+]) */
678 0, 0, 0, 0, /* Replaced with address of .got + 4. */
679 0x30, 0x7a, /* move [...],mof */
680 0x7f, 0x0d, /* (dip [pc+]) */
681 0, 0, 0, 0, /* Replaced with address of .got + 8. */
682 0x30, 0x09 /* jump [...] */
685 static const bfd_byte elf_cris_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
687 0x84, 0xe2, /* subq 4,$sp */
688 0x6f, 0xfe, /* move.d 0,$acr */
689 0, 0, 0, 0, /* Replaced by address of .got + 4. */
690 0x7e, 0x7a, /* move $mof,[$sp] */
691 0x3f, 0x7a, /* move [$acr],$mof */
692 0x04, 0xf2, /* addq 4,acr */
693 0x6f, 0xfa, /* move.d [$acr],$acr */
694 0xbf, 0x09, /* jump $acr */
695 0xb0, 0x05, /* nop */
696 0, 0 /* Pad out to 26 bytes. */
699 /* Subsequent entries in an absolute procedure linkage table look like
702 static const bfd_byte elf_cris_plt_entry[PLT_ENTRY_SIZE] =
704 0x7f, 0x0d, /* (dip [pc+]) */
705 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
706 0x30, 0x09, /* jump [...] */
707 0x3f, 0x7e, /* move [pc+],mof */
708 0, 0, 0, 0, /* Replaced with offset into relocation table. */
709 0x2f, 0xfe, /* add.d [pc+],pc */
711 0xff, 0xff /* Replaced with offset to start of .plt. */
714 static const bfd_byte elf_cris_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
716 0x6f, 0xfe, /* move.d 0,$acr */
717 0, 0, 0, 0, /* Replaced with address of this symbol in .got. */
718 0x6f, 0xfa, /* move.d [$acr],$acr */
719 0xbf, 0x09, /* jump $acr */
720 0xb0, 0x05, /* nop */
721 0x3f, 0x7e, /* move 0,mof */
722 0, 0, 0, 0, /* Replaced with offset into relocation table. */
723 0xbf, 0x0e, /* ba start_of_plt0_entry */
724 0, 0, 0, 0, /* Replaced with offset to plt0 entry. */
728 /* The first entry in a PIC procedure linkage table looks like this. */
730 static const bfd_byte elf_cris_pic_plt0_entry[PLT_ENTRY_SIZE] =
732 0xfc, 0xe1, 0x7e, 0x7e, /* push mof */
733 0x04, 0x01, 0x30, 0x7a, /* move [r0+4],mof */
734 0x08, 0x01, 0x30, 0x09, /* jump [r0+8] */
735 0, 0, 0, 0, 0, 0, 0, 0, /* Pad out to 20 bytes. */
738 static const bfd_byte elf_cris_pic_plt0_entry_v32[PLT_ENTRY_SIZE_V32] =
740 0x84, 0xe2, /* subq 4,$sp */
741 0x04, 0x01, /* addoq 4,$r0,$acr */
742 0x7e, 0x7a, /* move $mof,[$sp] */
743 0x3f, 0x7a, /* move [$acr],$mof */
744 0x04, 0xf2, /* addq 4,$acr */
745 0x6f, 0xfa, /* move.d [$acr],$acr */
746 0xbf, 0x09, /* jump $acr */
747 0xb0, 0x05, /* nop */
748 0, 0, /* Pad out to 26 bytes. */
753 /* Subsequent entries in a PIC procedure linkage table look like this. */
755 static const bfd_byte elf_cris_pic_plt_entry[PLT_ENTRY_SIZE] =
757 0x6f, 0x0d, /* (bdap [pc+].d,r0) */
758 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
759 0x30, 0x09, /* jump [...] */
760 0x3f, 0x7e, /* move [pc+],mof */
761 0, 0, 0, 0, /* Replaced with offset into relocation table. */
762 0x2f, 0xfe, /* add.d [pc+],pc */
763 0xec, 0xff, /* Replaced with offset to start of .plt. */
767 static const bfd_byte elf_cris_pic_plt_entry_v32[PLT_ENTRY_SIZE_V32] =
769 0x6f, 0x0d, /* addo.d 0,$r0,$acr */
770 0, 0, 0, 0, /* Replaced with offset of this symbol in .got. */
771 0x6f, 0xfa, /* move.d [$acr],$acr */
772 0xbf, 0x09, /* jump $acr */
773 0xb0, 0x05, /* nop */
774 0x3f, 0x7e, /* move relocoffs,$mof */
775 0, 0, 0, 0, /* Replaced with offset into relocation table. */
776 0xbf, 0x0e, /* ba start_of_plt */
777 0, 0, 0, 0, /* Replaced with offset to start of .plt. */
781 /* We copy elf32-m68k.c and elf32-i386.c for the basic linker hash bits
782 (and most other PIC/shlib stuff). Check that we don't drift away
785 The CRIS linker, like the m68k and i386 linkers (and probably the rest
786 too) needs to keep track of the number of relocs that it decides to
787 copy in check_relocs for each symbol. This is so that it can discard
788 PC relative relocs if it doesn't need them when linking with
789 -Bsymbolic. We store the information in a field extending the regular
790 ELF linker hash table. */
792 /* This structure keeps track of the number of PC relative relocs we have
793 copied for a given symbol. */
795 struct elf_cris_pcrel_relocs_copied
798 struct elf_cris_pcrel_relocs_copied *next;
800 /* A section in dynobj. */
803 /* Number of relocs copied in this section. */
806 /* Example of reloc being copied, for message. */
807 enum elf_cris_reloc_type r_type;
810 /* CRIS ELF linker hash entry. */
812 struct elf_cris_link_hash_entry
814 struct elf_link_hash_entry root;
816 /* Number of PC relative relocs copied for this symbol. */
817 struct elf_cris_pcrel_relocs_copied *pcrel_relocs_copied;
819 /* The GOTPLT references are CRIS-specific; the goal is to avoid having
820 both a general GOT and a PLT-specific GOT entry for the same symbol,
821 when it is referenced both as a function and as a function pointer.
823 Number of GOTPLT references for a function. */
824 bfd_signed_vma gotplt_refcount;
826 /* Actual GOTPLT index for this symbol, if applicable, or zero if not
827 (zero is never used as an index). FIXME: We should be able to fold
828 this with gotplt_refcount in a union, like the got and plt unions in
829 elf_link_hash_entry. */
830 bfd_size_type gotplt_offset;
832 /* The root.got.refcount is the sum of the regular reference counts
833 (this) and those members below. We have to keep a separate count
834 to track when we've found the first (or last) reference to a
835 regular got entry. The offset is in root.got.offset. */
836 bfd_signed_vma reg_got_refcount;
838 /* Similar to the above, the number of reloc references to this
839 symbols that need a R_CRIS_32_TPREL slot. The offset is in
840 root.got.offset, because this and .dtp_refcount can't validly
841 happen when there's also a regular GOT entry; that's invalid
842 input for which an error is emitted. */
843 bfd_signed_vma tprel_refcount;
845 /* Similar to the above, the number of reloc references to this
846 symbols that need a R_CRIS_DTP slot. The offset is in
847 root.got.offset; plus 4 if .tprel_refcount > 0. */
848 bfd_signed_vma dtp_refcount;
851 /* The local_got_refcounts and local_got_offsets are a multiple of
852 LSNUM in size, namely LGOT_ALLOC_NELTS_FOR(LSNUM) (plus one for the
853 refcount for GOT itself, see code), with the summary / group offset
854 for local symbols located at offset N, reference counts for
855 ordinary (address) relocs at offset N + LSNUM, for R_CRIS_DTP
856 relocs at offset N + 2*LSNUM, and for R_CRIS_32_TPREL relocs at N +
859 #define LGOT_REG_NDX(x) ((x) + symtab_hdr->sh_info)
860 #define LGOT_DTP_NDX(x) ((x) + 2 * symtab_hdr->sh_info)
861 #define LGOT_TPREL_NDX(x) ((x) + 3 * symtab_hdr->sh_info)
862 #define LGOT_ALLOC_NELTS_FOR(x) ((x) * 4)
864 /* CRIS ELF linker hash table. */
866 struct elf_cris_link_hash_table
868 struct elf_link_hash_table root;
870 /* We can't use the PLT offset and calculate to get the GOTPLT offset,
871 since we try and avoid creating GOTPLT:s when there's already a GOT.
872 Instead, we keep and update the next available index here. */
873 bfd_size_type next_gotplt_entry;
875 /* The number of R_CRIS_32_DTPREL and R_CRIS_16_DTPREL that have
876 been seen for any input; if != 0, then the constant-offset
877 R_CRIS_DTPMOD is needed for this DSO/executable. This turns
878 negative at relocation, so that we don't need an extra flag for
879 when the reloc is output. */
880 bfd_signed_vma dtpmod_refcount;
883 /* Traverse a CRIS ELF linker hash table. */
885 #define elf_cris_link_hash_traverse(table, func, info) \
886 (elf_link_hash_traverse \
888 (bfd_boolean (*) (struct elf_link_hash_entry *, void *)) (func), \
891 /* Get the CRIS ELF linker hash table from a link_info structure. */
893 #define elf_cris_hash_table(p) \
894 (elf_hash_table_id ((struct elf_link_hash_table *) ((p)->hash)) \
895 == CRIS_ELF_DATA ? ((struct elf_cris_link_hash_table *) ((p)->hash)) : NULL)
897 /* Get the CRIS ELF linker hash entry from a regular hash entry (the
898 "parent class"). The .root reference is just a simple type
899 check on the argument. */
901 #define elf_cris_hash_entry(p) \
902 ((struct elf_cris_link_hash_entry *) (&(p)->root))
904 /* Create an entry in a CRIS ELF linker hash table. */
906 static struct bfd_hash_entry *
907 elf_cris_link_hash_newfunc (struct bfd_hash_entry *entry,
908 struct bfd_hash_table *table,
911 struct elf_cris_link_hash_entry *ret =
912 (struct elf_cris_link_hash_entry *) entry;
914 /* Allocate the structure if it has not already been allocated by a
916 if (ret == (struct elf_cris_link_hash_entry *) NULL)
917 ret = ((struct elf_cris_link_hash_entry *)
918 bfd_hash_allocate (table,
919 sizeof (struct elf_cris_link_hash_entry)));
920 if (ret == (struct elf_cris_link_hash_entry *) NULL)
921 return (struct bfd_hash_entry *) ret;
923 /* Call the allocation method of the superclass. */
924 ret = ((struct elf_cris_link_hash_entry *)
925 _bfd_elf_link_hash_newfunc ((struct bfd_hash_entry *) ret,
927 if (ret != (struct elf_cris_link_hash_entry *) NULL)
929 ret->pcrel_relocs_copied = NULL;
930 ret->gotplt_refcount = 0;
931 ret->gotplt_offset = 0;
932 ret->dtp_refcount = 0;
933 ret->tprel_refcount = 0;
934 ret->reg_got_refcount = 0;
937 return (struct bfd_hash_entry *) ret;
940 /* Create a CRIS ELF linker hash table. */
942 static struct bfd_link_hash_table *
943 elf_cris_link_hash_table_create (bfd *abfd)
945 struct elf_cris_link_hash_table *ret;
946 bfd_size_type amt = sizeof (struct elf_cris_link_hash_table);
948 ret = ((struct elf_cris_link_hash_table *) bfd_malloc (amt));
949 if (ret == (struct elf_cris_link_hash_table *) NULL)
952 if (!_bfd_elf_link_hash_table_init (&ret->root, abfd,
953 elf_cris_link_hash_newfunc,
954 sizeof (struct elf_cris_link_hash_entry),
961 /* Initialize to skip over the first three entries in the gotplt; they
962 are used for run-time symbol evaluation. */
963 ret->next_gotplt_entry = 12;
965 /* We haven't seen any R_CRIS_nn_GOT_TPREL initially. */
966 ret->dtpmod_refcount = 0;
968 return &ret->root.root;
971 /* Perform a single relocation. By default we use the standard BFD
972 routines, with a few tweaks. */
974 static bfd_reloc_status_type
975 cris_final_link_relocate (howto, input_bfd, input_section, contents, rel,
977 reloc_howto_type * howto;
979 asection * input_section;
981 Elf_Internal_Rela * rel;
984 bfd_reloc_status_type r;
985 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
987 /* PC-relative relocations are relative to the position *after*
988 the reloc. Note that for R_CRIS_8_PCREL the adjustment is
989 not a single byte, since PC must be 16-bit-aligned. */
992 /* Check that the 16-bit GOT relocs are positive. */
993 case R_CRIS_16_GOTPLT:
995 if ((bfd_signed_vma) relocation < 0)
996 return bfd_reloc_overflow;
999 case R_CRIS_32_PLT_PCREL:
1000 case R_CRIS_32_PCREL:
1003 case R_CRIS_8_PCREL:
1004 case R_CRIS_16_PCREL:
1012 r = _bfd_final_link_relocate (howto, input_bfd, input_section,
1013 contents, rel->r_offset,
1014 relocation, rel->r_addend);
1019 /* The number of errors left before we stop outputting reloc-specific
1020 explanatory messages. By coincidence, this works nicely together
1021 with the default number of messages you'll get from LD about
1022 "relocation truncated to fit" messages before you get an
1023 "additional relocation overflows omitted from the output". */
1024 static int additional_relocation_error_msg_count = 10;
1026 /* Relocate an CRIS ELF section. See elf32-fr30.c, from where this was
1027 copied, for further comments. */
1030 cris_elf_relocate_section (bfd *output_bfd ATTRIBUTE_UNUSED,
1031 struct bfd_link_info *info,
1033 asection *input_section,
1035 Elf_Internal_Rela *relocs,
1036 Elf_Internal_Sym *local_syms,
1037 asection **local_sections)
1039 struct elf_cris_link_hash_table * htab;
1041 Elf_Internal_Shdr *symtab_hdr;
1042 struct elf_link_hash_entry **sym_hashes;
1043 bfd_vma *local_got_offsets;
1047 Elf_Internal_Rela *rel;
1048 Elf_Internal_Rela *relend;
1051 htab = elf_cris_hash_table (info);
1055 dynobj = elf_hash_table (info)->dynobj;
1056 local_got_offsets = elf_local_got_offsets (input_bfd);
1057 symtab_hdr = & elf_tdata (input_bfd)->symtab_hdr;
1058 sym_hashes = elf_sym_hashes (input_bfd);
1059 relend = relocs + input_section->reloc_count;
1068 splt = bfd_get_section_by_name (dynobj, ".plt");
1069 sgot = bfd_get_section_by_name (dynobj, ".got");
1072 for (rel = relocs; rel < relend; rel ++)
1074 reloc_howto_type *howto;
1075 unsigned long r_symndx;
1076 Elf_Internal_Sym *sym;
1078 struct elf_link_hash_entry *h;
1080 bfd_reloc_status_type r;
1081 const char *symname = NULL;
1082 enum elf_cris_reloc_type r_type;
1084 r_type = ELF32_R_TYPE (rel->r_info);
1086 if ( r_type == R_CRIS_GNU_VTINHERIT
1087 || r_type == R_CRIS_GNU_VTENTRY)
1090 r_symndx = ELF32_R_SYM (rel->r_info);
1091 howto = cris_elf_howto_table + r_type;
1096 if (r_symndx < symtab_hdr->sh_info)
1098 sym = local_syms + r_symndx;
1099 sec = local_sections [r_symndx];
1100 relocation = _bfd_elf_rela_local_sym (output_bfd, sym, &sec, rel);
1102 symname = (bfd_elf_string_from_elf_section
1103 (input_bfd, symtab_hdr->sh_link, sym->st_name));
1104 if (symname == NULL)
1105 symname = bfd_section_name (input_bfd, sec);
1110 bfd_boolean unresolved_reloc;
1112 RELOC_FOR_GLOBAL_SYMBOL (info, input_bfd, input_section, rel,
1113 r_symndx, symtab_hdr, sym_hashes,
1115 unresolved_reloc, warned);
1117 symname = h->root.root.string;
1119 if (unresolved_reloc
1120 /* Perhaps we should detect the cases that
1121 sec->output_section is expected to be NULL like i386 and
1122 m68k, but apparently (and according to elfxx-ia64.c) all
1123 valid cases are where the symbol is defined in a shared
1124 object which we link dynamically against. This includes
1125 PLT relocs for which we've created a PLT entry and other
1126 relocs for which we're prepared to create dynamic
1129 For now, new situations cause us to just err when
1130 sec->output_offset is NULL but the object with the symbol
1131 is *not* dynamically linked against. Thus this will
1132 automatically remind us so we can see if there are other
1133 valid cases we need to revisit. */
1134 && (sec->owner->flags & DYNAMIC) != 0)
1137 else if (h->root.type == bfd_link_hash_defined
1138 || h->root.type == bfd_link_hash_defweak)
1140 /* Here follow the cases where the relocation value must
1141 be zero (or when further handling is simplified when
1142 zero). I can't claim to understand the various
1143 conditions and they weren't described in the files
1144 where I copied them from (elf32-m68k.c and
1145 elf32-i386.c), but let's mention examples of where
1146 they happen. FIXME: Perhaps define and use a
1147 dynamic_symbol_p function like ia64.
1149 - When creating a shared library, we can have an
1150 ordinary relocation for a symbol defined in a shared
1151 library (perhaps the one we create). We then make
1152 the relocation value zero, as the value seen now will
1153 be added into the relocation addend in this shared
1154 library, but must be handled only at dynamic-link
1155 time. FIXME: Not sure this example covers the
1156 h->elf_link_hash_flags test, though it's there in
1159 && ((! info->symbolic && h->dynindx != -1)
1161 && (input_section->flags & SEC_ALLOC) != 0
1162 && (r_type == R_CRIS_8
1163 || r_type == R_CRIS_16
1164 || r_type == R_CRIS_32
1165 || r_type == R_CRIS_8_PCREL
1166 || r_type == R_CRIS_16_PCREL
1167 || r_type == R_CRIS_32_PCREL))
1169 else if (!info->relocatable && unresolved_reloc)
1172 (_("%B, section %A: unresolvable relocation %s against symbol `%s'"),
1175 cris_elf_howto_table[r_type].name,
1177 bfd_set_error (bfd_error_bad_value);
1183 if (sec != NULL && elf_discarded_section (sec))
1184 RELOC_AGAINST_DISCARDED_SECTION (info, input_bfd, input_section,
1185 rel, relend, howto, contents);
1187 if (info->relocatable)
1192 case R_CRIS_16_GOTPLT:
1193 case R_CRIS_32_GOTPLT:
1194 /* This is like the case for R_CRIS_32_GOT and R_CRIS_16_GOT,
1195 but we require a PLT, and the PLT handling will take care of
1196 filling in the PLT-specific GOT entry. For the GOT offset,
1197 calculate it as we do when filling it in for the .got.plt
1198 section. If we don't have a PLT, punt to GOT handling. */
1200 && ((struct elf_cris_link_hash_entry *) h)->gotplt_offset != 0)
1203 = bfd_get_section_by_name (dynobj, ".got.plt");
1206 BFD_ASSERT (h->dynindx != -1);
1207 BFD_ASSERT (sgotplt != NULL);
1210 = ((struct elf_cris_link_hash_entry *) h)->gotplt_offset;
1212 relocation = got_offset;
1216 /* We didn't make a PLT entry for this symbol. Maybe everything is
1217 folded into the GOT. Other than folding, this happens when
1218 statically linking PIC code, or when using -Bsymbolic. Check
1219 that we instead have a GOT entry as done for us by
1220 elf_cris_adjust_dynamic_symbol, and drop through into the
1221 ordinary GOT cases. This must not happen for the
1222 executable, because any reference it does to a function
1223 that is satisfied by a DSO must generate a PLT. We assume
1224 these call-specific relocs don't address non-functions. */
1226 && (h->got.offset == (bfd_vma) -1
1230 && h->root.type == bfd_link_hash_undefweak)))))
1232 (*_bfd_error_handler)
1233 ((h->got.offset == (bfd_vma) -1)
1234 ? _("%B, section %A: No PLT nor GOT for relocation %s"
1235 " against symbol `%s'")
1236 : _("%B, section %A: No PLT for relocation %s"
1237 " against symbol `%s'"),
1240 cris_elf_howto_table[r_type].name,
1241 (symname != NULL && symname[0] != '\0'
1242 ? symname : _("[whose name is lost]")));
1244 /* FIXME: Perhaps blaming input is not the right thing to
1245 do; this is probably an internal error. But it is true
1246 that we didn't like that particular input. */
1247 bfd_set_error (bfd_error_bad_value);
1252 /* The size of the actual relocation is not used here; we only
1253 fill in the GOT table here. */
1259 /* Note that despite using RELA relocations, the .got contents
1260 is always filled in with the link-relative relocation
1261 value; the addend. */
1265 off = h->got.offset;
1266 BFD_ASSERT (off != (bfd_vma) -1);
1268 if (!elf_hash_table (info)->dynamic_sections_created
1271 || h->type == STT_FUNC
1274 && (info->symbolic || h->dynindx == -1)
1277 /* This wasn't checked above for ! info->shared, but
1278 must hold there if we get here; the symbol must
1279 be defined in the regular program or be undefweak
1280 or be a function or otherwise need a PLT. */
1281 BFD_ASSERT (!elf_hash_table (info)->dynamic_sections_created
1284 || h->type == STT_FUNC
1286 || h->root.type == bfd_link_hash_undefweak);
1288 /* This is actually a static link, or it is a
1289 -Bsymbolic link and the symbol is defined locally,
1290 or is undefweak, or the symbol was forced to be
1291 local because of a version file, or we're not
1292 creating a dynamic object. We must initialize this
1293 entry in the global offset table. Since the offset
1294 must always be a multiple of 4, we use the least
1295 significant bit to record whether we have
1296 initialized it already.
1298 If this GOT entry should be runtime-initialized, we
1299 will create a .rela.got relocation entry to
1300 initialize the value. This is done in the
1301 finish_dynamic_symbol routine. */
1306 bfd_put_32 (output_bfd, relocation,
1307 sgot->contents + off);
1314 BFD_ASSERT (local_got_offsets != NULL
1315 && local_got_offsets[r_symndx] != (bfd_vma) -1);
1317 off = local_got_offsets[r_symndx];
1319 /* The offset must always be a multiple of 4. We use
1320 the least significant bit to record whether we have
1321 already generated the necessary reloc. */
1326 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1330 Elf_Internal_Rela outrel;
1333 if (srelgot == NULL)
1335 = bfd_get_section_by_name (dynobj, ".rela.got");
1336 BFD_ASSERT (srelgot != NULL);
1338 outrel.r_offset = (sgot->output_section->vma
1339 + sgot->output_offset
1341 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1342 outrel.r_addend = relocation;
1343 loc = srelgot->contents;
1344 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1345 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1348 local_got_offsets[r_symndx] |= 1;
1352 relocation = sgot->output_offset + off;
1353 if (rel->r_addend != 0)
1355 /* We can't do anything for a relocation which is against
1356 a symbol *plus offset*. GOT holds relocations for
1357 symbols. Make this an error; the compiler isn't
1358 allowed to pass us these kinds of things. */
1360 (*_bfd_error_handler)
1361 (_("%B, section %A: relocation %s with non-zero addend %d"
1362 " against local symbol"),
1365 cris_elf_howto_table[r_type].name,
1368 (*_bfd_error_handler)
1369 (_("%B, section %A: relocation %s with non-zero addend %d"
1370 " against symbol `%s'"),
1373 cris_elf_howto_table[r_type].name,
1375 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1377 bfd_set_error (bfd_error_bad_value);
1383 case R_CRIS_32_GOTREL:
1384 /* This relocation must only be performed against local symbols.
1385 It's also ok when we link a program and the symbol is either
1386 defined in an ordinary (non-DSO) object or is undefined weak. */
1388 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1392 && h->root.type == bfd_link_hash_undefweak))))
1394 (*_bfd_error_handler)
1395 (_("%B, section %A: relocation %s is"
1396 " not allowed for global symbol: `%s'"),
1399 cris_elf_howto_table[r_type].name,
1401 bfd_set_error (bfd_error_bad_value);
1405 /* This can happen if we get a link error with the input ELF
1406 variant mismatching the output variant. Emit an error so
1407 it's noticed if it happens elsewhere. */
1410 (*_bfd_error_handler)
1411 (_("%B, section %A: relocation %s with no GOT created"),
1414 cris_elf_howto_table[r_type].name);
1415 bfd_set_error (bfd_error_bad_value);
1419 /* This relocation is like a PC-relative one, except the
1420 reference point is the location of GOT. Note that
1421 sgot->output_offset is not involved in this calculation. We
1422 always want the start of entire .got section, not the
1423 position after the reserved header. */
1424 relocation -= sgot->output_section->vma;
1427 case R_CRIS_32_PLT_PCREL:
1428 /* Relocation is to the entry for this symbol in the
1429 procedure linkage table. */
1431 /* Resolve a PLT_PCREL reloc against a local symbol directly,
1432 without using the procedure linkage table. */
1433 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1436 if (h->plt.offset == (bfd_vma) -1
1439 /* We didn't make a PLT entry for this symbol. This
1440 happens when statically linking PIC code, or when
1441 using -Bsymbolic. */
1445 relocation = (splt->output_section->vma
1446 + splt->output_offset
1450 case R_CRIS_32_PLT_GOTREL:
1451 /* Like R_CRIS_32_PLT_PCREL, but the reference point is the
1452 start of the .got section. See also comment at
1454 relocation -= sgot->output_section->vma;
1456 /* Resolve a PLT_GOTREL reloc against a local symbol directly,
1457 without using the procedure linkage table. */
1458 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
1461 if (h->plt.offset == (bfd_vma) -1
1464 /* We didn't make a PLT entry for this symbol. This
1465 happens when statically linking PIC code, or when
1466 using -Bsymbolic. */
1470 relocation = (splt->output_section->vma
1471 + splt->output_offset
1473 - sgot->output_section->vma);
1476 case R_CRIS_8_PCREL:
1477 case R_CRIS_16_PCREL:
1478 case R_CRIS_32_PCREL:
1479 /* If the symbol was local, we need no shlib-specific handling. */
1480 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT
1481 || h->dynindx == -1)
1489 && r_symndx != STN_UNDEF
1490 && (input_section->flags & SEC_ALLOC) != 0
1491 && ((r_type != R_CRIS_8_PCREL
1492 && r_type != R_CRIS_16_PCREL
1493 && r_type != R_CRIS_32_PCREL)
1495 || (h != NULL && !h->def_regular))))
1497 Elf_Internal_Rela outrel;
1499 bfd_boolean skip, relocate;
1501 /* When generating a shared object, these relocations
1502 are copied into the output file to be resolved at run
1507 sreloc = _bfd_elf_get_dynamic_reloc_section
1508 (dynobj, input_section, /*rela?*/ TRUE);
1509 /* The section should have been created in cris_elf_check_relocs,
1510 but that function will not be called for objects which fail in
1511 cris_elf_merge_private_bfd_data. */
1514 bfd_set_error (bfd_error_bad_value);
1523 _bfd_elf_section_offset (output_bfd, info, input_section,
1525 if (outrel.r_offset == (bfd_vma) -1)
1527 else if (outrel.r_offset == (bfd_vma) -2
1528 /* For now, undefined weak symbols with non-default
1529 visibility (yielding 0), like exception info for
1530 discarded sections, will get a R_CRIS_NONE
1531 relocation rather than no relocation, because we
1532 notice too late that the symbol doesn't need a
1535 && h->root.type == bfd_link_hash_undefweak
1536 && ELF_ST_VISIBILITY (h->other) != STV_DEFAULT))
1537 skip = TRUE, relocate = TRUE;
1538 outrel.r_offset += (input_section->output_section->vma
1539 + input_section->output_offset);
1542 memset (&outrel, 0, sizeof outrel);
1543 /* h->dynindx may be -1 if the symbol was marked to
1546 && ((! info->symbolic && h->dynindx != -1)
1547 || !h->def_regular))
1549 BFD_ASSERT (h->dynindx != -1);
1550 outrel.r_info = ELF32_R_INFO (h->dynindx, r_type);
1551 outrel.r_addend = relocation + rel->r_addend;
1555 outrel.r_addend = relocation + rel->r_addend;
1557 if (r_type == R_CRIS_32)
1560 outrel.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
1566 if (bfd_is_abs_section (sec))
1568 else if (sec == NULL || sec->owner == NULL)
1570 bfd_set_error (bfd_error_bad_value);
1577 /* We are turning this relocation into one
1578 against a section symbol. It would be
1579 proper to subtract the symbol's value,
1580 osec->vma, from the emitted reloc addend,
1581 but ld.so expects buggy relocs. */
1582 osec = sec->output_section;
1583 indx = elf_section_data (osec)->dynindx;
1586 osec = htab->root.text_index_section;
1587 indx = elf_section_data (osec)->dynindx;
1589 BFD_ASSERT (indx != 0);
1592 outrel.r_info = ELF32_R_INFO (indx, r_type);
1596 loc = sreloc->contents;
1597 loc += sreloc->reloc_count++ * sizeof (Elf32_External_Rela);
1598 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1600 /* This reloc will be computed at runtime, so there's no
1601 need to do anything now, except for R_CRIS_32 relocations
1602 that have been turned into R_CRIS_RELATIVE. */
1609 case R_CRIS_16_DTPREL:
1610 case R_CRIS_32_DTPREL:
1611 /* This relocation must only be performed against local
1612 symbols, or to sections that are not loadable. It's also
1613 ok when we link a program and the symbol is defined in an
1614 ordinary (non-DSO) object (if it's undefined there, we've
1615 already seen an error). */
1617 && (input_section->flags & SEC_ALLOC) != 0
1618 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1621 && h->root.type != bfd_link_hash_undefined)))
1623 (*_bfd_error_handler)
1624 ((h->root.type == bfd_link_hash_undefined)
1625 /* We shouldn't get here for GCC-emitted code. */
1626 ? _("%B, section %A: relocation %s has an undefined"
1627 " reference to `%s', perhaps a declaration mixup?")
1628 : ("%B, section %A: relocation %s is"
1629 " not allowed for `%s', a global symbol with default"
1630 " visibility, perhaps a declaration mixup?"),
1633 cris_elf_howto_table[r_type].name,
1634 symname != NULL && symname[0] != '\0'
1635 ? symname : _("[whose name is lost]"));
1636 bfd_set_error (bfd_error_bad_value);
1640 BFD_ASSERT ((input_section->flags & SEC_ALLOC) == 0
1641 || htab->dtpmod_refcount != 0);
1643 /* Fill in a R_CRIS_DTPMOD reloc at offset 3 if we haven't
1644 already done so. Note that we do this in .got.plt, not
1645 in .got, as .got.plt contains the first part, still the
1646 reloc is against .got, because the linker script directs
1647 (is required to direct) them both into .got. */
1648 if (htab->dtpmod_refcount > 0
1649 && (input_section->flags & SEC_ALLOC) != 0)
1651 asection *sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
1652 BFD_ASSERT (sgotplt != NULL);
1656 Elf_Internal_Rela outrel;
1659 if (srelgot == NULL)
1660 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1661 BFD_ASSERT (srelgot != NULL);
1662 loc = srelgot->contents;
1663 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1665 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 12);
1666 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1667 outrel.r_offset = (sgotplt->output_section->vma
1668 + sgotplt->output_offset
1670 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTPMOD);
1671 outrel.r_addend = 0;
1672 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1676 /* For an executable, the GOT entry contents is known. */
1677 bfd_put_32 (output_bfd, (bfd_vma) 1, sgotplt->contents + 12);
1678 bfd_put_32 (output_bfd, (bfd_vma) 0, sgotplt->contents + 16);
1681 /* Reverse the sign to mark that we've emitted the
1682 required GOT entry. */
1683 htab->dtpmod_refcount = - htab->dtpmod_refcount;
1686 /* The relocation is the offset from the start of the module
1687 TLS block to the (local) symbol. */
1688 relocation -= elf_hash_table (info)->tls_sec == NULL
1689 ? 0 : elf_hash_table (info)->tls_sec->vma;
1695 bfd_set_error (bfd_error_invalid_operation);
1697 /* We've already informed in cris_elf_check_relocs that
1698 this is an error. */
1703 case R_CRIS_16_GOT_GD:
1704 case R_CRIS_32_GOT_GD:
1705 if (rel->r_addend != 0)
1707 /* We can't do anything for a relocation which is against a
1708 symbol *plus offset*. The GOT holds relocations for
1709 symbols. Make this an error; the compiler isn't allowed
1710 to pass us these kinds of things. */
1711 (*_bfd_error_handler)
1712 (_("%B, section %A: relocation %s with non-zero addend %d"
1713 " against symbol `%s'"),
1716 cris_elf_howto_table[r_type].name,
1718 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1720 bfd_set_error (bfd_error_bad_value);
1725 && (h == NULL || h->def_regular || ELF_COMMON_DEF_P (h)))
1727 /* Known contents of the GOT. */
1730 /* The symbol is defined in the program, so just write
1731 (1, known_tpoffset) into the GOT. */
1732 relocation -= elf_hash_table (info)->tls_sec->vma;
1736 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1737 ? h->got.offset + 4 : h->got.offset;
1741 off = local_got_offsets[r_symndx];
1742 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1746 /* We use bit 1 of the offset as a flag for GOT entry with
1747 the R_CRIS_DTP reloc, setting it when we've emitted the
1748 GOT entry and reloc. Bit 0 is used for R_CRIS_32_TPREL
1757 local_got_offsets[r_symndx] |= 2;
1759 bfd_put_32 (output_bfd, 1, sgot->contents + off);
1760 bfd_put_32 (output_bfd, relocation, sgot->contents + off + 4);
1765 relocation = sgot->output_offset + off
1766 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1770 /* Not all parts of the GOT entry are known; emit a real
1775 off = elf_cris_hash_entry (h)->tprel_refcount > 0
1776 ? h->got.offset + 4 : h->got.offset;
1779 off = local_got_offsets[r_symndx];
1780 if (local_got_offsets[LGOT_TPREL_NDX (r_symndx)])
1784 /* See above re bit 1 and bit 0 usage. */
1787 Elf_Internal_Rela outrel;
1795 local_got_offsets[r_symndx] |= 2;
1797 /* Clear the target contents of the GOT (just as a
1798 gesture; it's already cleared on allocation): this
1799 relocation is not like the other dynrelocs. */
1800 bfd_put_32 (output_bfd, 0, sgot->contents + off);
1801 bfd_put_32 (output_bfd, 0, sgot->contents + off + 4);
1803 if (srelgot == NULL)
1804 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1805 BFD_ASSERT (srelgot != NULL);
1807 if (h != NULL && h->dynindx != -1)
1809 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_DTP);
1814 outrel.r_info = ELF32_R_INFO (0, R_CRIS_DTP);
1816 /* NULL if we had an error. */
1817 relocation -= elf_hash_table (info)->tls_sec == NULL
1818 ? 0 : elf_hash_table (info)->tls_sec->vma;
1821 outrel.r_offset = (sgot->output_section->vma
1822 + sgot->output_offset
1824 outrel.r_addend = relocation;
1825 loc = srelgot->contents;
1826 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1828 /* NULL if we had an error. */
1829 if (srelgot->contents != NULL)
1830 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1835 relocation = sgot->output_offset + off
1836 + (r_type == R_CRIS_32_GD ? sgot->output_section->vma : 0);
1839 /* The GOT-relative offset to the GOT entry is the
1840 relocation, or for R_CRIS_32_GD, the actual address of
1847 bfd_set_error (bfd_error_invalid_operation);
1849 /* We've already informed in cris_elf_check_relocs that
1850 this is an error. */
1855 case R_CRIS_32_GOT_TPREL:
1856 case R_CRIS_16_GOT_TPREL:
1857 if (rel->r_addend != 0)
1859 /* We can't do anything for a relocation which is
1860 against a symbol *plus offset*. GOT holds
1861 relocations for symbols. Make this an error; the
1862 compiler isn't allowed to pass us these kinds of
1864 (*_bfd_error_handler)
1865 (_("%B, section %A: relocation %s with non-zero addend %d"
1866 " against symbol `%s'"),
1869 cris_elf_howto_table[r_type].name,
1871 symname[0] != '\0' ? symname : _("[whose name is lost]"));
1872 bfd_set_error (bfd_error_bad_value);
1876 if (!info->shared && (h == NULL || h->def_regular))
1878 /* Known contents of the GOT. */
1881 /* The symbol is defined in the program, so just write
1882 the -prog_tls_size+known_tpoffset into the GOT. */
1883 relocation -= elf_hash_table (info)->tls_sec->vma;
1884 relocation -= elf_hash_table (info)->tls_size;
1887 off = h->got.offset;
1889 off = local_got_offsets[r_symndx];
1891 /* Bit 0 is used to mark whether we've emitted the required
1892 entry (and if needed R_CRIS_32_TPREL reloc). Bit 1
1893 is used similarly for R_CRIS_DTP, see above. */
1901 local_got_offsets[r_symndx] |= 1;
1903 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1908 relocation = sgot->output_offset + off
1909 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1913 /* Emit a real relocation. */
1917 off = h->got.offset;
1919 off = local_got_offsets[r_symndx];
1921 /* See above re usage of bit 0 and 1. */
1924 Elf_Internal_Rela outrel;
1932 local_got_offsets[r_symndx] |= 1;
1934 if (srelgot == NULL)
1935 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
1936 BFD_ASSERT (srelgot != NULL);
1938 if (h != NULL && h->dynindx != -1)
1940 outrel.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_32_TPREL);
1945 outrel.r_info = ELF32_R_INFO (0, R_CRIS_32_TPREL);
1947 /* NULL if we had an error. */
1948 relocation -= elf_hash_table (info)->tls_sec == NULL
1949 ? 0 : elf_hash_table (info)->tls_sec->vma;
1952 /* Just "define" the initial contents in some
1953 semi-logical way. */
1954 bfd_put_32 (output_bfd, relocation, sgot->contents + off);
1956 outrel.r_offset = (sgot->output_section->vma
1957 + sgot->output_offset
1959 outrel.r_addend = relocation;
1960 loc = srelgot->contents;
1961 loc += srelgot->reloc_count++ * sizeof (Elf32_External_Rela);
1962 /* NULL if we had an error. */
1963 if (srelgot->contents != NULL)
1964 bfd_elf32_swap_reloca_out (output_bfd, &outrel, loc);
1969 relocation = sgot->output_offset + off
1970 + (r_type == R_CRIS_32_IE ? sgot->output_section->vma : 0);
1973 /* The GOT-relative offset to the GOT entry is the relocation,
1974 or for R_CRIS_32_GD, the actual address of the GOT entry. */
1977 case R_CRIS_16_TPREL:
1978 case R_CRIS_32_TPREL:
1979 /* This relocation must only be performed against symbols
1980 defined in an ordinary (non-DSO) object. */
1983 bfd_set_error (bfd_error_invalid_operation);
1985 /* We've already informed in cris_elf_check_relocs that
1986 this is an error. */
1991 && ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
1992 && !(h->def_regular || ELF_COMMON_DEF_P (h))
1993 /* If it's undefined, then an error message has already
1995 && h->root.type != bfd_link_hash_undefined)
1997 (*_bfd_error_handler)
1998 (_("%B, section %A: relocation %s is"
1999 " not allowed for symbol: `%s'"
2000 " which is defined outside the program,"
2001 " perhaps a declaration mixup?"),
2004 cris_elf_howto_table[r_type].name,
2006 bfd_set_error (bfd_error_bad_value);
2010 /* NULL if we had an error. */
2011 relocation -= elf_hash_table (info)->tls_sec == NULL
2013 : (elf_hash_table (info)->tls_sec->vma
2014 + elf_hash_table (info)->tls_size);
2016 /* The TLS-relative offset is the relocation. */
2024 r = cris_final_link_relocate (howto, input_bfd, input_section,
2025 contents, rel, relocation);
2027 if (r != bfd_reloc_ok)
2029 const char * msg = (const char *) NULL;
2033 case bfd_reloc_overflow:
2034 r = info->callbacks->reloc_overflow
2035 (info, (h ? &h->root : NULL), symname, howto->name,
2036 (bfd_vma) 0, input_bfd, input_section, rel->r_offset);
2037 if (additional_relocation_error_msg_count > 0)
2039 additional_relocation_error_msg_count--;
2042 case R_CRIS_16_GOTPLT:
2045 /* Not just TLS is involved here, so we make
2046 generation and message depend on -fPIC/-fpic
2048 case R_CRIS_16_GOT_TPREL:
2049 case R_CRIS_16_GOT_GD:
2050 (*_bfd_error_handler)
2051 (_("(too many global variables for -fpic:"
2052 " recompile with -fPIC)"));
2055 case R_CRIS_16_TPREL:
2056 case R_CRIS_16_DTPREL:
2057 (*_bfd_error_handler)
2058 (_("(thread-local data too big for -fpic or"
2059 " -msmall-tls: recompile with -fPIC or"
2060 " -mno-small-tls)"));
2063 /* No known cause for overflow for other relocs. */
2070 case bfd_reloc_undefined:
2071 r = info->callbacks->undefined_symbol
2072 (info, symname, input_bfd, input_section, rel->r_offset,
2076 case bfd_reloc_outofrange:
2077 msg = _("internal error: out of range error");
2080 case bfd_reloc_notsupported:
2081 msg = _("internal error: unsupported relocation error");
2084 case bfd_reloc_dangerous:
2085 msg = _("internal error: dangerous relocation");
2089 msg = _("internal error: unknown error");
2094 r = info->callbacks->warning
2095 (info, msg, symname, input_bfd, input_section, rel->r_offset);
2105 /* Finish up dynamic symbol handling. We set the contents of various
2106 dynamic sections here. */
2109 elf_cris_finish_dynamic_symbol (bfd *output_bfd,
2110 struct bfd_link_info *info,
2111 struct elf_link_hash_entry *h,
2112 Elf_Internal_Sym *sym)
2114 struct elf_cris_link_hash_table * htab;
2117 /* Where in the plt entry to put values. */
2118 int plt_off1 = 2, plt_off2 = 10, plt_off3 = 16;
2120 /* What offset to add to the distance to the first PLT entry for the
2121 value at plt_off3. */
2122 int plt_off3_value_bias = 4;
2124 /* Where in the PLT entry the call-dynlink-stub is (happens to be same
2125 for PIC and non-PIC for v32 and pre-v32). */
2126 int plt_stub_offset = 8;
2127 int plt_entry_size = PLT_ENTRY_SIZE;
2128 const bfd_byte *plt_entry = elf_cris_plt_entry;
2129 const bfd_byte *plt_pic_entry = elf_cris_pic_plt_entry;
2131 htab = elf_cris_hash_table (info);
2135 /* Adjust the various PLT entry offsets. */
2136 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2140 plt_off3_value_bias = -2;
2141 plt_stub_offset = 12;
2142 plt_entry_size = PLT_ENTRY_SIZE_V32;
2143 plt_entry = elf_cris_plt_entry_v32;
2144 plt_pic_entry = elf_cris_pic_plt_entry_v32;
2147 dynobj = elf_hash_table (info)->dynobj;
2149 if (h->plt.offset != (bfd_vma) -1)
2156 bfd_vma gotplt_offset
2157 = elf_cris_hash_entry (h)->gotplt_offset;
2158 Elf_Internal_Rela rela;
2160 bfd_boolean has_gotplt = gotplt_offset != 0;
2162 /* Get the index in the .rela.plt relocations for the .got.plt
2163 entry that corresponds to this symbol.
2164 We have to count backwards here, and the result is only valid
2165 as an index into .rela.plt. We also have to undo the effect
2166 of the R_CRIS_DTPMOD entry at .got index 3 (offset 12 into
2167 .got.plt) for which gotplt_offset is adjusted, because while
2168 that entry goes into .got.plt, its relocation goes into
2169 .rela.got, not .rela.plt. (It's not PLT-specific; not to be
2170 processed as part of the runtime lazy .rela.plt relocation).
2171 FIXME: There be literal constants here... */
2172 bfd_vma rela_plt_index
2173 = (htab->dtpmod_refcount != 0
2174 ? gotplt_offset/4 - 2 - 3 : gotplt_offset/4 - 3);
2176 /* Get the offset into the .got table of the entry that corresponds
2177 to this function. Note that we embed knowledge that "incoming"
2178 .got goes after .got.plt in the output without padding (pointer
2179 aligned). However, that knowledge is present in several other
2184 : h->got.offset + htab->next_gotplt_entry);
2186 /* This symbol has an entry in the procedure linkage table. Set it
2189 BFD_ASSERT (h->dynindx != -1);
2191 splt = bfd_get_section_by_name (dynobj, ".plt");
2192 sgotplt = bfd_get_section_by_name (dynobj, ".got.plt");
2193 srela = bfd_get_section_by_name (dynobj, ".rela.plt");
2194 BFD_ASSERT (splt != NULL && sgotplt != NULL
2195 && (! has_gotplt || srela != NULL));
2197 got_base = sgotplt->output_section->vma + sgotplt->output_offset;
2199 /* Fill in the entry in the procedure linkage table. */
2202 memcpy (splt->contents + h->plt.offset, plt_entry,
2205 /* We need to enter the absolute address of the GOT entry here. */
2206 bfd_put_32 (output_bfd, got_base + got_offset,
2207 splt->contents + h->plt.offset + plt_off1);
2211 memcpy (splt->contents + h->plt.offset, plt_pic_entry,
2213 bfd_put_32 (output_bfd, got_offset,
2214 splt->contents + h->plt.offset + plt_off1);
2217 /* Fill in the plt entry and make a relocation, if this is a "real"
2221 /* Fill in the offset to the reloc table. */
2222 bfd_put_32 (output_bfd,
2223 rela_plt_index * sizeof (Elf32_External_Rela),
2224 splt->contents + h->plt.offset + plt_off2);
2226 /* Fill in the offset to the first PLT entry, where to "jump". */
2227 bfd_put_32 (output_bfd,
2228 - (h->plt.offset + plt_off3 + plt_off3_value_bias),
2229 splt->contents + h->plt.offset + plt_off3);
2231 /* Fill in the entry in the global offset table with the address of
2232 the relocating stub. */
2233 bfd_put_32 (output_bfd,
2234 (splt->output_section->vma
2235 + splt->output_offset
2238 sgotplt->contents + got_offset);
2240 /* Fill in the entry in the .rela.plt section. */
2241 rela.r_offset = (sgotplt->output_section->vma
2242 + sgotplt->output_offset
2244 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_JUMP_SLOT);
2246 loc = srela->contents + rela_plt_index * sizeof (Elf32_External_Rela);
2247 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2250 if (!h->def_regular)
2252 /* Mark the symbol as undefined, rather than as defined in
2253 the .plt section. Leave the value alone. */
2254 sym->st_shndx = SHN_UNDEF;
2256 /* FIXME: From elf32-sparc.c 2001-02-19 (1.18). I still don't
2257 know whether resetting the value is significant; if it really
2258 is, rather than a quirk or bug in the sparc port, then I
2259 believe we'd see this elsewhere. */
2260 /* If the symbol is weak, we do need to clear the value.
2261 Otherwise, the PLT entry would provide a definition for
2262 the symbol even if the symbol wasn't defined anywhere,
2263 and so the symbol would never be NULL. */
2264 if (!h->ref_regular_nonweak)
2269 /* For an ordinary program, we emit .got relocs only for symbols that
2270 are in the dynamic-symbols table and are either defined by the
2271 program or are undefined weak symbols, or are function symbols
2272 where we do not output a PLT: the PLT reloc was output above and all
2273 references to the function symbol are redirected to the PLT. */
2274 if (h->got.offset != (bfd_vma) -1
2275 && (elf_cris_hash_entry (h)->reg_got_refcount > 0)
2277 || (h->dynindx != -1
2278 && h->plt.offset == (bfd_vma) -1
2280 && h->root.type != bfd_link_hash_undefweak)))
2284 Elf_Internal_Rela rela;
2288 /* This symbol has an entry in the global offset table. Set it up. */
2290 sgot = bfd_get_section_by_name (dynobj, ".got");
2291 srela = bfd_get_section_by_name (dynobj, ".rela.got");
2292 BFD_ASSERT (sgot != NULL && srela != NULL);
2294 rela.r_offset = (sgot->output_section->vma
2295 + sgot->output_offset
2296 + (h->got.offset &~ (bfd_vma) 1));
2298 /* If this is a static link, or it is a -Bsymbolic link and the
2299 symbol is defined locally or was forced to be local because
2300 of a version file, we just want to emit a RELATIVE reloc.
2301 The entry in the global offset table will already have been
2302 initialized in the relocate_section function. */
2303 where = sgot->contents + (h->got.offset &~ (bfd_vma) 1);
2304 if (! elf_hash_table (info)->dynamic_sections_created
2306 && (info->symbolic || h->dynindx == -1)
2309 rela.r_info = ELF32_R_INFO (0, R_CRIS_RELATIVE);
2310 rela.r_addend = bfd_get_signed_32 (output_bfd, where);
2314 bfd_put_32 (output_bfd, (bfd_vma) 0, where);
2315 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_GLOB_DAT);
2319 loc = srela->contents;
2320 loc += srela->reloc_count++ * sizeof (Elf32_External_Rela);
2321 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2327 Elf_Internal_Rela rela;
2330 /* This symbol needs a copy reloc. Set it up. */
2332 BFD_ASSERT (h->dynindx != -1
2333 && (h->root.type == bfd_link_hash_defined
2334 || h->root.type == bfd_link_hash_defweak));
2336 s = bfd_get_section_by_name (h->root.u.def.section->owner,
2338 BFD_ASSERT (s != NULL);
2340 rela.r_offset = (h->root.u.def.value
2341 + h->root.u.def.section->output_section->vma
2342 + h->root.u.def.section->output_offset);
2343 rela.r_info = ELF32_R_INFO (h->dynindx, R_CRIS_COPY);
2345 loc = s->contents + s->reloc_count++ * sizeof (Elf32_External_Rela);
2346 bfd_elf32_swap_reloca_out (output_bfd, &rela, loc);
2349 /* Mark _DYNAMIC and _GLOBAL_OFFSET_TABLE_ as absolute. */
2350 if (strcmp (h->root.root.string, "_DYNAMIC") == 0
2351 || h == elf_hash_table (info)->hgot)
2352 sym->st_shndx = SHN_ABS;
2357 /* Finish up the dynamic sections. Do *not* emit relocs here, as their
2358 offsets were changed, as part of -z combreloc handling, from those we
2362 elf_cris_finish_dynamic_sections (output_bfd, info)
2364 struct bfd_link_info *info;
2370 dynobj = elf_hash_table (info)->dynobj;
2372 sgot = bfd_get_section_by_name (dynobj, ".got.plt");
2373 BFD_ASSERT (sgot != NULL);
2374 sdyn = bfd_get_section_by_name (dynobj, ".dynamic");
2376 if (elf_hash_table (info)->dynamic_sections_created)
2379 Elf32_External_Dyn *dyncon, *dynconend;
2381 splt = bfd_get_section_by_name (dynobj, ".plt");
2382 BFD_ASSERT (splt != NULL && sdyn != NULL);
2384 dyncon = (Elf32_External_Dyn *) sdyn->contents;
2385 dynconend = (Elf32_External_Dyn *) (sdyn->contents + sdyn->size);
2386 for (; dyncon < dynconend; dyncon++)
2388 Elf_Internal_Dyn dyn;
2391 bfd_elf32_swap_dyn_in (dynobj, dyncon, &dyn);
2399 s = bfd_get_section_by_name (output_bfd, ".got");
2400 BFD_ASSERT (s != NULL);
2401 dyn.d_un.d_ptr = s->vma;
2402 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2406 /* Yes, we *can* have a .plt and no .plt.rela, for instance
2407 if all symbols are found in the .got (not .got.plt). */
2408 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2409 dyn.d_un.d_ptr = s != NULL ? s->vma : 0;
2410 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2414 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2418 dyn.d_un.d_val = s->size;
2419 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2423 /* The procedure linkage table relocs (DT_JMPREL) should
2424 not be included in the overall relocs (DT_RELA).
2425 Therefore, we override the DT_RELASZ entry here to
2426 make it not include the JMPREL relocs. Since the
2427 linker script arranges for .rela.plt to follow all
2428 other relocation sections, we don't have to worry
2429 about changing the DT_RELA entry. */
2430 s = bfd_get_section_by_name (output_bfd, ".rela.plt");
2432 dyn.d_un.d_val -= s->size;
2433 bfd_elf32_swap_dyn_out (output_bfd, &dyn, dyncon);
2438 /* Fill in the first entry in the procedure linkage table. */
2441 if (bfd_get_mach (output_bfd) == bfd_mach_cris_v32)
2444 memcpy (splt->contents, elf_cris_pic_plt0_entry_v32,
2445 PLT_ENTRY_SIZE_V32);
2448 memcpy (splt->contents, elf_cris_plt0_entry_v32,
2449 PLT_ENTRY_SIZE_V32);
2450 bfd_put_32 (output_bfd,
2451 sgot->output_section->vma
2452 + sgot->output_offset + 4,
2453 splt->contents + 4);
2455 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2456 = PLT_ENTRY_SIZE_V32;
2462 memcpy (splt->contents, elf_cris_pic_plt0_entry,
2466 memcpy (splt->contents, elf_cris_plt0_entry,
2468 bfd_put_32 (output_bfd,
2469 sgot->output_section->vma
2470 + sgot->output_offset + 4,
2471 splt->contents + 6);
2472 bfd_put_32 (output_bfd,
2473 sgot->output_section->vma
2474 + sgot->output_offset + 8,
2475 splt->contents + 14);
2477 elf_section_data (splt->output_section)->this_hdr.sh_entsize
2484 /* Fill in the first three entries in the global offset table. */
2488 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents);
2490 bfd_put_32 (output_bfd,
2491 sdyn->output_section->vma + sdyn->output_offset,
2493 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 4);
2494 bfd_put_32 (output_bfd, (bfd_vma) 0, sgot->contents + 8);
2497 elf_section_data (sgot->output_section)->this_hdr.sh_entsize = 4;
2502 /* Return the section that should be marked against GC for a given
2506 cris_elf_gc_mark_hook (asection *sec,
2507 struct bfd_link_info *info,
2508 Elf_Internal_Rela *rel,
2509 struct elf_link_hash_entry *h,
2510 Elf_Internal_Sym *sym)
2512 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rel->r_info);
2516 case R_CRIS_GNU_VTINHERIT:
2517 case R_CRIS_GNU_VTENTRY:
2524 return _bfd_elf_gc_mark_hook (sec, info, rel, h, sym);
2527 /* Update the got entry reference counts for the section being removed. */
2530 cris_elf_gc_sweep_hook (bfd *abfd,
2531 struct bfd_link_info *info,
2533 const Elf_Internal_Rela *relocs)
2535 struct elf_cris_link_hash_table * htab;
2536 Elf_Internal_Shdr *symtab_hdr;
2537 struct elf_link_hash_entry **sym_hashes;
2538 bfd_signed_vma *local_got_refcounts;
2539 const Elf_Internal_Rela *rel, *relend;
2544 if (info->relocatable)
2547 dynobj = elf_hash_table (info)->dynobj;
2551 htab = elf_cris_hash_table (info);
2555 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
2556 sym_hashes = elf_sym_hashes (abfd);
2557 local_got_refcounts = elf_local_got_refcounts (abfd);
2559 sgot = bfd_get_section_by_name (dynobj, ".got");
2560 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2562 relend = relocs + sec->reloc_count;
2563 for (rel = relocs; rel < relend; rel++)
2565 unsigned long r_symndx;
2566 struct elf_link_hash_entry *h = NULL;
2567 bfd_signed_vma got_element_size = 4;
2568 bfd_signed_vma *specific_refcount = NULL;
2569 enum elf_cris_reloc_type r_type;
2571 r_symndx = ELF32_R_SYM (rel->r_info);
2572 if (r_symndx >= symtab_hdr->sh_info)
2574 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
2575 while (h->root.type == bfd_link_hash_indirect
2576 || h->root.type == bfd_link_hash_warning)
2577 h = (struct elf_link_hash_entry *) h->root.u.i.link;
2580 r_type = ELF32_R_TYPE (rel->r_info);
2585 case R_CRIS_16_GOTPLT:
2586 case R_CRIS_32_GOTPLT:
2587 specific_refcount = h != NULL
2588 ? &((struct elf_cris_link_hash_entry *) h)->reg_got_refcount
2589 : &local_got_refcounts[LGOT_REG_NDX (r_symndx)];
2593 case R_CRIS_32_GOT_GD:
2594 case R_CRIS_16_GOT_GD:
2595 got_element_size = 8;
2596 specific_refcount = h != NULL
2597 ? &((struct elf_cris_link_hash_entry *) h)->dtp_refcount
2598 : &local_got_refcounts[LGOT_DTP_NDX (r_symndx)];
2602 case R_CRIS_16_GOT_TPREL:
2603 case R_CRIS_32_GOT_TPREL:
2604 specific_refcount = h != NULL
2605 ? &((struct elf_cris_link_hash_entry *) h)->tprel_refcount
2606 : &local_got_refcounts[LGOT_TPREL_NDX (r_symndx)];
2617 case R_CRIS_16_GOT_TPREL:
2618 case R_CRIS_32_GOT_TPREL:
2619 case R_CRIS_32_GOT_GD:
2620 case R_CRIS_16_GOT_GD:
2625 /* If the counters are 0 when we got here, we've
2626 miscounted somehow somewhere, an internal error. */
2627 BFD_ASSERT (h->got.refcount > 0);
2630 BFD_ASSERT (*specific_refcount > 0);
2631 --*specific_refcount;
2632 if (*specific_refcount == 0)
2634 /* We don't need the .got entry any more. */
2635 sgot->size -= got_element_size;
2636 srelgot->size -= sizeof (Elf32_External_Rela);
2642 if (local_got_refcounts != NULL)
2644 /* If the counters are 0 when we got here, we've
2645 miscounted somehow somewhere, an internal error. */
2646 BFD_ASSERT (local_got_refcounts[r_symndx] > 0);
2647 --local_got_refcounts[r_symndx];
2649 BFD_ASSERT (*specific_refcount > 0);
2650 --*specific_refcount;
2651 if (*specific_refcount == 0)
2653 /* We don't need the .got entry any more. */
2654 sgot->size -= got_element_size;
2656 srelgot->size -= sizeof (Elf32_External_Rela);
2661 case R_CRIS_16_GOTPLT:
2662 case R_CRIS_32_GOTPLT:
2663 /* For local symbols, treat these like GOT relocs. */
2665 goto local_got_reloc;
2668 case R_CRIS_32_PLT_GOTREL:
2669 /* FIXME: We don't garbage-collect away the .got section. */
2670 if (local_got_refcounts != NULL)
2671 local_got_refcounts[-1]--;
2674 case R_CRIS_8_PCREL:
2675 case R_CRIS_16_PCREL:
2676 case R_CRIS_32_PCREL:
2677 case R_CRIS_32_PLT_PCREL:
2680 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT
2681 && h->plt.refcount > 0)
2686 case R_CRIS_32_DTPREL:
2687 /* This'd be a .dtpreld entry in e.g. debug info. */
2688 if ((sec->flags & SEC_ALLOC) == 0)
2691 case R_CRIS_16_DTPREL:
2692 htab->dtpmod_refcount--;
2693 if (htab->dtpmod_refcount == 0)
2694 htab->next_gotplt_entry -= 8;
2695 BFD_ASSERT (local_got_refcounts != NULL);
2696 local_got_refcounts[-1]--;
2707 /* The elf_backend_plt_sym_val hook function. */
2710 cris_elf_plt_sym_val (bfd_vma i, const asection *plt,
2711 const arelent *rel ATTRIBUTE_UNUSED)
2713 bfd_size_type plt_entry_size;
2716 = (bfd_get_mach (plt->owner) == bfd_mach_cris_v32
2717 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2719 return plt->vma + (i + 1) * plt_entry_size;
2722 /* Make sure we emit a GOT entry if the symbol was supposed to have a PLT
2723 entry but we found we will not create any. Called when we find we will
2724 not have any PLT for this symbol, by for example
2725 elf_cris_adjust_dynamic_symbol when we're doing a proper dynamic link,
2726 or elf_cris_size_dynamic_sections if no dynamic sections will be
2727 created (we're only linking static objects). */
2730 elf_cris_adjust_gotplt_to_got (h, p)
2731 struct elf_cris_link_hash_entry *h;
2734 struct bfd_link_info *info = (struct bfd_link_info *) p;
2736 if (h->root.root.type == bfd_link_hash_warning)
2737 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
2739 /* If nobody wanted a GOTPLT with this symbol, we're done. */
2740 if (h->gotplt_refcount <= 0)
2743 if (h->reg_got_refcount > 0)
2745 /* There's a GOT entry for this symbol. Just adjust the refcounts.
2746 Probably not necessary at this stage, but keeping them accurate
2747 helps avoiding surprises later. */
2748 h->root.got.refcount += h->gotplt_refcount;
2749 h->reg_got_refcount += h->gotplt_refcount;
2750 h->gotplt_refcount = 0;
2754 /* No GOT entry for this symbol. We need to create one. */
2755 bfd *dynobj = elf_hash_table (info)->dynobj;
2759 BFD_ASSERT (dynobj != NULL);
2760 sgot = bfd_get_section_by_name (dynobj, ".got");
2761 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
2763 /* Put accurate refcounts there. */
2764 h->root.got.refcount += h->gotplt_refcount;
2765 h->reg_got_refcount = h->gotplt_refcount;
2767 h->gotplt_refcount = 0;
2769 /* We always have a .got and a .rela.got section if there were
2770 GOTPLT relocs in input. */
2771 BFD_ASSERT (sgot != NULL && srelgot != NULL);
2773 /* Allocate space in the .got section. */
2776 /* Allocate relocation space. */
2777 srelgot->size += sizeof (Elf32_External_Rela);
2783 /* Try to fold PLT entries with GOT entries. There are two cases when we
2786 - When all PLT references are GOTPLT references, and there are GOT
2787 references, and this is not the executable. We don't have to
2788 generate a PLT at all.
2790 - When there are both (ordinary) PLT references and GOT references,
2791 and this isn't the executable.
2792 We want to make the PLT reference use the ordinary GOT entry rather
2793 than R_CRIS_JUMP_SLOT, a run-time dynamically resolved GOTPLT entry,
2794 since the GOT entry will have to be resolved at startup anyway.
2796 Though the latter case is handled when room for the PLT is allocated,
2799 By folding into the GOT, we may need a round-trip to a PLT in the
2800 executable for calls, a loss in performance. Still, losing a
2801 reloc is a win in size and at least in start-up time.
2803 Note that this function is called before symbols are forced local by
2804 version scripts. The differing cases are handled by
2805 elf_cris_hide_symbol. */
2808 elf_cris_try_fold_plt_to_got (h, p)
2809 struct elf_cris_link_hash_entry *h;
2812 struct bfd_link_info *info = (struct bfd_link_info *) p;
2814 /* If there are no GOT references for this symbol, we can't fold any
2815 other reference so there's nothing to do. Likewise if there are no
2816 PLT references; GOTPLT references included. */
2817 if (h->root.got.refcount <= 0 || h->root.plt.refcount <= 0)
2820 /* GOTPLT relocs are supposed to be included into the PLT refcount. */
2821 BFD_ASSERT (h->gotplt_refcount <= h->root.plt.refcount);
2823 if (h->gotplt_refcount == h->root.plt.refcount)
2825 /* The only PLT references are GOTPLT references, and there are GOT
2826 references. Convert PLT to GOT references. */
2827 if (! elf_cris_adjust_gotplt_to_got (h, info))
2830 /* Clear the PLT references, so no PLT will be created. */
2831 h->root.plt.offset = (bfd_vma) -1;
2837 /* Our own version of hide_symbol, so that we can adjust a GOTPLT reloc
2838 to use a GOT entry (and create one) rather than requiring a GOTPLT
2842 elf_cris_hide_symbol (info, h, force_local)
2843 struct bfd_link_info *info;
2844 struct elf_link_hash_entry *h;
2845 bfd_boolean force_local;
2847 elf_cris_adjust_gotplt_to_got ((struct elf_cris_link_hash_entry *) h, info);
2849 _bfd_elf_link_hash_hide_symbol (info, h, force_local);
2852 /* Adjust a symbol defined by a dynamic object and referenced by a
2853 regular object. The current definition is in some section of the
2854 dynamic object, but we're not including those sections. We have to
2855 change the definition to something the rest of the link can
2859 elf_cris_adjust_dynamic_symbol (struct bfd_link_info *info,
2860 struct elf_link_hash_entry *h)
2862 struct elf_cris_link_hash_table * htab;
2865 bfd_size_type plt_entry_size;
2867 htab = elf_cris_hash_table (info);
2871 dynobj = elf_hash_table (info)->dynobj;
2873 /* Make sure we know what is going on here. */
2874 BFD_ASSERT (dynobj != NULL
2876 || h->u.weakdef != NULL
2879 && !h->def_regular)));
2882 = (bfd_get_mach (dynobj) == bfd_mach_cris_v32
2883 ? PLT_ENTRY_SIZE_V32 : PLT_ENTRY_SIZE);
2885 /* If this is a function, put it in the procedure linkage table. We
2886 will fill in the contents of the procedure linkage table later,
2887 when we know the address of the .got section. */
2888 if (h->type == STT_FUNC
2891 /* If we link a program (not a DSO), we'll get rid of unnecessary
2892 PLT entries; we point to the actual symbols -- even for pic
2893 relocs, because a program built with -fpic should have the same
2894 result as one built without -fpic, specifically considering weak
2896 FIXME: m68k and i386 differ here, for unclear reasons. */
2900 /* This case can occur if we saw a PLT reloc in an input file,
2901 but the symbol was not defined by a dynamic object. In such
2902 a case, we don't actually need to build a procedure linkage
2903 table, and we can just do an absolute or PC reloc instead, or
2904 change a .got.plt index to a .got index for GOTPLT relocs. */
2905 BFD_ASSERT (h->needs_plt);
2907 h->plt.offset = (bfd_vma) -1;
2909 elf_cris_adjust_gotplt_to_got ((struct
2910 elf_cris_link_hash_entry *) h,
2914 /* If we had a R_CRIS_GLOB_DAT that didn't have to point to a PLT;
2915 where a pointer-equivalent symbol was unimportant (i.e. more
2916 like R_CRIS_JUMP_SLOT after symbol evaluation) we could get rid
2917 of the PLT. We can't for the executable, because the GOT
2918 entries will point to the PLT there (and be constant). */
2920 && !elf_cris_try_fold_plt_to_got ((struct elf_cris_link_hash_entry*)
2924 /* GC or folding may have rendered this entry unused. */
2925 if (h->plt.refcount <= 0)
2928 h->plt.offset = (bfd_vma) -1;
2932 /* Make sure this symbol is output as a dynamic symbol. */
2933 if (h->dynindx == -1)
2935 if (! bfd_elf_link_record_dynamic_symbol (info, h))
2939 s = bfd_get_section_by_name (dynobj, ".plt");
2940 BFD_ASSERT (s != NULL);
2942 /* If this is the first .plt entry, make room for the special
2945 s->size += plt_entry_size;
2947 /* If this symbol is not defined in a regular file, and we are
2948 not generating a shared library, then set the symbol to this
2949 location in the .plt. */
2953 h->root.u.def.section = s;
2954 h->root.u.def.value = s->size;
2957 /* If there's already a GOT entry, use that, not a .got.plt. A
2958 GOT field still has a reference count when we get here; it's
2959 not yet changed to an offset. We can't do this for an
2960 executable, because then the reloc associated with the PLT
2961 would get a non-PLT reloc pointing to the PLT. FIXME: Move
2962 this to elf_cris_try_fold_plt_to_got. */
2963 if (info->shared && h->got.refcount > 0)
2965 h->got.refcount += h->plt.refcount;
2967 /* Mark the PLT offset to use the GOT entry by setting the low
2968 bit in the plt offset; it is always a multiple of
2969 plt_entry_size (which is at least a multiple of 2). */
2970 BFD_ASSERT ((s->size % plt_entry_size) == 0);
2972 /* Change the PLT refcount to an offset. */
2973 h->plt.offset = s->size;
2975 /* By not setting gotplt_offset (i.e. it remains at 0), we signal
2976 that the got entry should be used instead. */
2977 BFD_ASSERT (((struct elf_cris_link_hash_entry *)
2978 h)->gotplt_offset == 0);
2980 /* Make room for this entry. */
2981 s->size += plt_entry_size;
2986 /* No GOT reference for this symbol; prepare for an ordinary PLT. */
2987 h->plt.offset = s->size;
2989 /* Make room for this entry. */
2990 s->size += plt_entry_size;
2992 /* We also need to make an entry in the .got.plt section, which
2993 will be placed in the .got section by the linker script. */
2994 ((struct elf_cris_link_hash_entry *) h)->gotplt_offset
2995 = htab->next_gotplt_entry;
2996 htab->next_gotplt_entry += 4;
2998 s = bfd_get_section_by_name (dynobj, ".got.plt");
2999 BFD_ASSERT (s != NULL);
3002 /* We also need to make an entry in the .rela.plt section. */
3004 s = bfd_get_section_by_name (dynobj, ".rela.plt");
3005 BFD_ASSERT (s != NULL);
3006 s->size += sizeof (Elf32_External_Rela);
3011 /* Reinitialize the plt offset now that it is not used as a reference
3013 h->plt.offset = (bfd_vma) -1;
3015 /* If this is a weak symbol, and there is a real definition, the
3016 processor independent code will have arranged for us to see the
3017 real definition first, and we can just use the same value. */
3018 if (h->u.weakdef != NULL)
3020 BFD_ASSERT (h->u.weakdef->root.type == bfd_link_hash_defined
3021 || h->u.weakdef->root.type == bfd_link_hash_defweak);
3022 h->root.u.def.section = h->u.weakdef->root.u.def.section;
3023 h->root.u.def.value = h->u.weakdef->root.u.def.value;
3027 /* This is a reference to a symbol defined by a dynamic object which
3028 is not a function. */
3030 /* If we are creating a shared library, we must presume that the
3031 only references to the symbol are via the global offset table.
3032 For such cases we need not do anything here; the relocations will
3033 be handled correctly by relocate_section. */
3037 /* If there are no references to this symbol that do not use the
3038 GOT, we don't need to generate a copy reloc. */
3039 if (!h->non_got_ref)
3044 (*_bfd_error_handler) (_("dynamic variable `%s' is zero size"),
3045 h->root.root.string);
3049 /* We must allocate the symbol in our .dynbss section, which will
3050 become part of the .bss section of the executable. There will be
3051 an entry for this symbol in the .dynsym section. The dynamic
3052 object will contain position independent code, so all references
3053 from the dynamic object to this symbol will go through the global
3054 offset table. The dynamic linker will use the .dynsym entry to
3055 determine the address it must put in the global offset table, so
3056 both the dynamic object and the regular object will refer to the
3057 same memory location for the variable. */
3059 s = bfd_get_section_by_name (dynobj, ".dynbss");
3060 BFD_ASSERT (s != NULL);
3062 /* We must generate a R_CRIS_COPY reloc to tell the dynamic linker to
3063 copy the initial value out of the dynamic object and into the
3064 runtime process image. We need to remember the offset into the
3065 .rela.bss section we are going to use. */
3066 if ((h->root.u.def.section->flags & SEC_ALLOC) != 0)
3070 srel = bfd_get_section_by_name (dynobj, ".rela.bss");
3071 BFD_ASSERT (srel != NULL);
3072 srel->size += sizeof (Elf32_External_Rela);
3076 return _bfd_elf_adjust_dynamic_copy (h, s);
3079 /* Adjust our "subclass" elements for an indirect symbol. */
3082 elf_cris_copy_indirect_symbol (struct bfd_link_info *info,
3083 struct elf_link_hash_entry *dir,
3084 struct elf_link_hash_entry *ind)
3086 struct elf_cris_link_hash_entry *edir, *eind;
3088 edir = (struct elf_cris_link_hash_entry *) dir;
3089 eind = (struct elf_cris_link_hash_entry *) ind;
3091 /* Only indirect symbols are replaced; we're not interested in
3092 updating any of EIND's fields for other symbols. */
3093 if (eind->root.root.type != bfd_link_hash_indirect)
3095 /* Still, we need to copy flags for e.g. weak definitions. */
3096 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3100 BFD_ASSERT (edir->gotplt_offset == 0 || eind->gotplt_offset == 0);
3102 #define XMOVOPZ(F, OP, Z) edir->F OP eind->F; eind->F = Z
3103 #define XMOVE(F) XMOVOPZ (F, +=, 0)
3104 if (eind->pcrel_relocs_copied != NULL)
3106 if (edir->pcrel_relocs_copied != NULL)
3108 struct elf_cris_pcrel_relocs_copied **pp;
3109 struct elf_cris_pcrel_relocs_copied *p;
3111 /* Add reloc counts against the indirect sym to the direct sym
3112 list. Merge any entries against the same section. */
3113 for (pp = &eind->pcrel_relocs_copied; *pp != NULL;)
3115 struct elf_cris_pcrel_relocs_copied *q;
3117 for (q = edir->pcrel_relocs_copied; q != NULL; q = q->next)
3118 if (q->section == p->section)
3120 q->count += p->count;
3127 *pp = edir->pcrel_relocs_copied;
3129 XMOVOPZ (pcrel_relocs_copied, =, NULL);
3131 XMOVE (gotplt_refcount);
3132 XMOVE (gotplt_offset);
3133 XMOVE (reg_got_refcount);
3134 XMOVE (tprel_refcount);
3135 XMOVE (dtp_refcount);
3139 _bfd_elf_link_hash_copy_indirect (info, dir, ind);
3142 /* Look through the relocs for a section during the first phase. */
3145 cris_elf_check_relocs (bfd *abfd,
3146 struct bfd_link_info *info,
3148 const Elf_Internal_Rela *relocs)
3150 struct elf_cris_link_hash_table * htab;
3152 Elf_Internal_Shdr *symtab_hdr;
3153 struct elf_link_hash_entry **sym_hashes;
3154 bfd_signed_vma *local_got_refcounts;
3155 const Elf_Internal_Rela *rel;
3156 const Elf_Internal_Rela *rel_end;
3161 if (info->relocatable)
3164 htab = elf_cris_hash_table (info);
3168 dynobj = elf_hash_table (info)->dynobj;
3169 symtab_hdr = &elf_tdata (abfd)->symtab_hdr;
3170 sym_hashes = elf_sym_hashes (abfd);
3171 local_got_refcounts = elf_local_got_refcounts (abfd);
3177 rel_end = relocs + sec->reloc_count;
3178 for (rel = relocs; rel < rel_end; rel++)
3180 struct elf_link_hash_entry *h;
3181 unsigned long r_symndx;
3182 enum elf_cris_reloc_type r_type;
3183 bfd_signed_vma got_element_size = 4;
3184 unsigned long r_symndx_lgot = INT_MAX;
3186 r_symndx = ELF32_R_SYM (rel->r_info);
3187 if (r_symndx < symtab_hdr->sh_info)
3190 r_symndx_lgot = LGOT_REG_NDX (r_symndx);
3194 h = sym_hashes[r_symndx - symtab_hdr->sh_info];
3195 while (h->root.type == bfd_link_hash_indirect
3196 || h->root.type == bfd_link_hash_warning)
3197 h = (struct elf_link_hash_entry *) h->root.u.i.link;
3200 r_type = ELF32_R_TYPE (rel->r_info);
3202 /* Some relocs require linker-created sections; we need to hang them
3203 on the first input bfd we found that contained dynamic relocs. */
3206 case R_CRIS_32_DTPREL:
3207 if ((sec->flags & SEC_ALLOC) == 0)
3208 /* This'd be a .dtpreld entry in e.g. debug info. We have
3209 several different switch statements below, but none of
3210 that is needed; we need no preparations for resolving
3211 R_CRIS_32_DTPREL into a non-allocated section (debug
3212 info), so let's just move on to the next
3216 case R_CRIS_16_DTPREL:
3217 /* The first .got.plt entry is right after the R_CRIS_DTPMOD
3218 entry at index 3. */
3219 if (htab->dtpmod_refcount == 0)
3220 htab->next_gotplt_entry += 8;
3222 htab->dtpmod_refcount++;
3227 case R_CRIS_16_GOT_GD:
3228 case R_CRIS_32_GOT_GD:
3229 case R_CRIS_32_GOT_TPREL:
3230 case R_CRIS_16_GOT_TPREL:
3233 case R_CRIS_32_GOTREL:
3234 case R_CRIS_32_PLT_GOTREL:
3235 case R_CRIS_32_PLT_PCREL:
3236 case R_CRIS_16_GOTPLT:
3237 case R_CRIS_32_GOTPLT:
3240 elf_hash_table (info)->dynobj = dynobj = abfd;
3242 /* We could handle this if we can get a handle on the
3243 output bfd in elf_cris_adjust_dynamic_symbol. Failing
3244 that, we must insist on dynobj being a specific mach. */
3245 if (bfd_get_mach (dynobj) == bfd_mach_cris_v10_v32)
3247 (*_bfd_error_handler)
3248 (_("%B, section %A:\n v10/v32 compatible object %s"
3249 " must not contain a PIC relocation"),
3254 /* Create the .got section, so we can assume it's always
3255 present whenever there's a dynobj. */
3256 if (!_bfd_elf_create_got_section (dynobj, info))
3261 sgot = bfd_get_section_by_name (dynobj, ".got");
3263 if (local_got_refcounts == NULL)
3267 /* We use index local_got_refcounts[-1] to count all
3268 GOT-relative relocations that do not have explicit
3270 amt = LGOT_ALLOC_NELTS_FOR (symtab_hdr->sh_info) + 1;
3271 amt *= sizeof (bfd_signed_vma);
3272 local_got_refcounts = ((bfd_signed_vma *) bfd_zalloc (abfd, amt));
3273 if (local_got_refcounts == NULL)
3276 local_got_refcounts++;
3277 elf_local_got_refcounts (abfd) = local_got_refcounts;
3285 /* Some relocs require a global offset table (but perhaps not a
3286 specific GOT entry). */
3289 case R_CRIS_16_DTPREL:
3290 case R_CRIS_32_DTPREL:
3291 /* Not requesting .got.rela for an executable: the contents
3292 of the first entry is constant there. For a shared
3293 library, we need .got.rela for the R_CRIS_DTPMOD
3294 relocation at index 3. */
3301 case R_CRIS_16_GOT_GD:
3302 case R_CRIS_32_GOT_GD:
3303 case R_CRIS_32_GOT_TPREL:
3304 case R_CRIS_16_GOT_TPREL:
3307 /* For R_CRIS_16_GOTPLT and R_CRIS_32_GOTPLT, we need a GOT
3308 entry only for local symbols. Unfortunately, we don't know
3309 until later on if there's a version script that forces the
3310 symbol local. We must have the .rela.got section in place
3311 before we know if the symbol looks global now, so we need
3312 to treat the reloc just like for R_CRIS_16_GOT and
3314 case R_CRIS_16_GOTPLT:
3315 case R_CRIS_32_GOTPLT:
3319 && (h != NULL || info->shared))
3321 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
3322 if (srelgot == NULL)
3324 srelgot = bfd_make_section_with_flags (dynobj,
3330 | SEC_LINKER_CREATED
3333 || !bfd_set_section_alignment (dynobj, srelgot, 2))
3343 /* Warn and error for invalid input. */
3347 case R_CRIS_32_TPREL:
3348 case R_CRIS_16_TPREL:
3352 (*_bfd_error_handler)
3353 (_("%B, section %A:\n relocation %s not valid"
3354 " in a shared object;"
3355 " typically an option mixup, recompile with -fPIC"),
3358 cris_elf_howto_table[r_type].name);
3359 /* Don't return FALSE here; we want messages for all of
3360 these and the error behavior is ungraceful
3370 case R_CRIS_16_GOT_GD:
3371 case R_CRIS_32_GOT_GD:
3372 /* These are requests for tls_index entries, run-time R_CRIS_DTP. */
3373 got_element_size = 8;
3374 r_symndx_lgot = LGOT_DTP_NDX (r_symndx);
3377 case R_CRIS_16_DTPREL:
3378 case R_CRIS_32_DTPREL:
3379 /* These two just request for the constant-index
3380 module-local tls_index-sized GOT entry, which we add
3385 case R_CRIS_32_GOT_TPREL:
3386 case R_CRIS_16_GOT_TPREL:
3387 r_symndx_lgot = LGOT_TPREL_NDX (r_symndx);
3389 /* Those relocs also require that a DSO is of type
3390 Initial Exec. Like other targets, we don't reset this
3391 flag even if the relocs are GC:ed away. */
3393 info->flags |= DF_STATIC_TLS;
3396 /* Let's list the other assembler-generated TLS-relocs too,
3397 just to show that they're not forgotten. */
3398 case R_CRIS_16_TPREL:
3399 case R_CRIS_32_TPREL:
3406 case R_CRIS_16_GOTPLT:
3407 case R_CRIS_32_GOTPLT:
3408 /* Mark that we need a GOT entry if the PLT entry (and its GOT
3409 entry) is eliminated. We can only do this for a non-local
3413 elf_cris_hash_entry (h)->gotplt_refcount++;
3414 goto handle_gotplt_reloc;
3416 /* If h is NULL then this is a local symbol, and we must make a
3417 GOT entry for it, so handle it like a GOT reloc. */
3422 case R_CRIS_16_GOT_GD:
3423 case R_CRIS_32_GOT_GD:
3424 case R_CRIS_32_GOT_TPREL:
3425 case R_CRIS_16_GOT_TPREL:
3428 /* This symbol requires a global offset table entry. */
3431 if (h->got.refcount == 0)
3433 /* Make sure this symbol is output as a dynamic symbol. */
3434 if (h->dynindx == -1)
3436 if (!bfd_elf_link_record_dynamic_symbol (info, h))
3441 /* Update the sum of reloc counts for this symbol. */
3448 if (elf_cris_hash_entry (h)->reg_got_refcount == 0)
3450 /* Allocate space in the .got section. */
3451 sgot->size += got_element_size;
3452 /* Allocate relocation space. */
3453 srelgot->size += sizeof (Elf32_External_Rela);
3455 elf_cris_hash_entry (h)->reg_got_refcount++;
3459 case R_CRIS_16_GOT_GD:
3460 case R_CRIS_32_GOT_GD:
3461 if (elf_cris_hash_entry (h)->dtp_refcount == 0)
3463 /* Allocate space in the .got section. */
3464 sgot->size += got_element_size;
3465 /* Allocate relocation space. */
3466 srelgot->size += sizeof (Elf32_External_Rela);
3468 elf_cris_hash_entry (h)->dtp_refcount++;
3472 case R_CRIS_32_GOT_TPREL:
3473 case R_CRIS_16_GOT_TPREL:
3474 if (elf_cris_hash_entry (h)->tprel_refcount == 0)
3476 /* Allocate space in the .got section. */
3477 sgot->size += got_element_size;
3478 /* Allocate relocation space. */
3479 srelgot->size += sizeof (Elf32_External_Rela);
3481 elf_cris_hash_entry (h)->tprel_refcount++;
3491 /* This is a global offset table entry for a local symbol. */
3492 if (local_got_refcounts[r_symndx_lgot] == 0)
3494 sgot->size += got_element_size;
3497 /* If we are generating a shared object, we need
3498 to output a R_CRIS_RELATIVE reloc so that the
3499 dynamic linker can adjust this GOT entry.
3500 Similarly for non-regular got entries. */
3501 srelgot->size += sizeof (Elf32_External_Rela);
3504 /* Update the reloc-specific count. */
3505 local_got_refcounts[r_symndx_lgot]++;
3507 /* This one is the sum of all the others. */
3508 local_got_refcounts[r_symndx]++;
3512 case R_CRIS_16_DTPREL:
3513 case R_CRIS_32_DTPREL:
3514 case R_CRIS_32_GOTREL:
3515 /* This reference requires a global offset table.
3516 FIXME: The actual refcount isn't used currently; the .got
3517 section can't be removed if there were any references in the
3519 local_got_refcounts[-1]++;
3522 handle_gotplt_reloc:
3524 case R_CRIS_32_PLT_GOTREL:
3525 /* This reference requires a global offset table. */
3526 local_got_refcounts[-1]++;
3529 case R_CRIS_32_PLT_PCREL:
3530 /* This symbol requires a procedure linkage table entry. We
3531 actually build the entry in adjust_dynamic_symbol,
3532 because this might be a case of linking PIC code which is
3533 never referenced by a dynamic object, in which case we
3534 don't need to generate a procedure linkage table entry
3537 /* Beware: if we'd check for visibility of the symbol here
3538 (and not marking the need for a PLT when non-visible), we'd
3539 get into trouble with keeping handling consistent with
3540 regards to relocs found before definition and GOTPLT
3541 handling. Eliminable PLT entries will be dealt with later
3553 /* Let's help debug shared library creation. Any of these
3554 relocs *can* be used in shared libs, but pages containing
3555 them cannot be shared, so they're not appropriate for
3556 common use. Don't warn for sections we don't care about,
3557 such as debug sections or non-constant sections. We
3558 can't help tables of (global) function pointers, for
3559 example, though they must be emitted in a (writable) data
3560 section to avoid having impure text sections. */
3562 && (sec->flags & SEC_ALLOC) != 0
3563 && (sec->flags & SEC_READONLY) != 0)
3565 /* FIXME: How do we make this optionally a warning only? */
3566 (*_bfd_error_handler)
3567 (_("%B, section %A:\n relocation %s should not"
3568 " be used in a shared object; recompile with -fPIC"),
3571 cris_elf_howto_table[r_type].name);
3577 /* Make sure a plt entry is created for this symbol if it
3578 turns out to be a function defined by a dynamic object. */
3579 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3583 /* If we are creating a shared library and this is not a local
3584 symbol, we need to copy the reloc into the shared library.
3585 However when linking with -Bsymbolic and this is a global
3586 symbol which is defined in an object we are including in the
3587 link (i.e., DEF_REGULAR is set), then we can resolve the
3588 reloc directly. At this point we have not seen all the input
3589 files, so it is possible that DEF_REGULAR is not set now but
3590 will be set later (it is never cleared). In case of a weak
3591 definition, DEF_REGULAR may be cleared later by a strong
3592 definition in a shared library. We account for that
3593 possibility below by storing information in the relocs_copied
3594 field of the hash table entry. A similar situation occurs
3595 when creating shared libraries and symbol visibility changes
3596 render the symbol local. */
3598 /* No need to do anything if we're not creating a shared object. */
3602 /* We don't need to handle relocs into sections not going into
3603 the "real" output. */
3604 if ((sec->flags & SEC_ALLOC) == 0)
3607 /* We may need to create a reloc section in the dynobj and made room
3611 sreloc = _bfd_elf_make_dynamic_reloc_section
3612 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3618 if (sec->flags & SEC_READONLY)
3619 info->flags |= DF_TEXTREL;
3621 sreloc->size += sizeof (Elf32_External_Rela);
3624 case R_CRIS_8_PCREL:
3625 case R_CRIS_16_PCREL:
3626 case R_CRIS_32_PCREL:
3631 /* Make sure a plt entry is created for this symbol if it
3632 turns out to be a function defined by a dynamic object. */
3633 if (ELF_ST_VISIBILITY (h->other) == STV_DEFAULT)
3637 /* If we are creating a shared library and this is not a local
3638 symbol, we need to copy the reloc into the shared library.
3639 However when linking with -Bsymbolic and this is a global
3640 symbol which is defined in an object we are including in the
3641 link (i.e., DEF_REGULAR is set), then we can resolve the
3642 reloc directly. At this point we have not seen all the input
3643 files, so it is possible that DEF_REGULAR is not set now but
3644 will be set later (it is never cleared). In case of a weak
3645 definition, DEF_REGULAR may be cleared later by a strong
3646 definition in a shared library. We account for that
3647 possibility below by storing information in the relocs_copied
3648 field of the hash table entry. A similar situation occurs
3649 when creating shared libraries and symbol visibility changes
3650 render the symbol local. */
3652 /* No need to do anything if we're not creating a shared object. */
3656 /* We don't need to handle relocs into sections not going into
3657 the "real" output. */
3658 if ((sec->flags & SEC_ALLOC) == 0)
3661 /* If the symbol is local, then we know already we can
3662 eliminate the reloc. */
3663 if (h == NULL || ELF_ST_VISIBILITY (h->other) != STV_DEFAULT)
3666 /* If this is with -Bsymbolic and the symbol isn't weak, and
3667 is defined by an ordinary object (the ones we include in
3668 this shared library) then we can also eliminate the
3669 reloc. See comment above for more eliminable cases which
3670 we can't identify at this time. */
3672 && h->root.type != bfd_link_hash_defweak
3676 /* We may need to create a reloc section in the dynobj and made room
3680 sreloc = _bfd_elf_make_dynamic_reloc_section
3681 (sec, dynobj, 2, abfd, /*rela?*/ TRUE);
3687 sreloc->size += sizeof (Elf32_External_Rela);
3689 /* We count the number of PC relative relocations we have
3690 entered for this symbol, so that we can discard them
3691 again if the symbol is later defined by a regular object.
3692 We know that h is really a pointer to an
3693 elf_cris_link_hash_entry. */
3695 struct elf_cris_link_hash_entry *eh;
3696 struct elf_cris_pcrel_relocs_copied *p;
3698 eh = elf_cris_hash_entry (h);
3700 for (p = eh->pcrel_relocs_copied; p != NULL; p = p->next)
3701 if (p->section == sec)
3706 p = ((struct elf_cris_pcrel_relocs_copied *)
3707 bfd_alloc (dynobj, (bfd_size_type) sizeof *p));
3710 p->next = eh->pcrel_relocs_copied;
3711 eh->pcrel_relocs_copied = p;
3721 /* This relocation describes the C++ object vtable hierarchy.
3722 Reconstruct it for later use during GC. */
3723 case R_CRIS_GNU_VTINHERIT:
3724 if (!bfd_elf_gc_record_vtinherit (abfd, sec, h, rel->r_offset))
3728 /* This relocation describes which C++ vtable entries are actually
3729 used. Record for later use during GC. */
3730 case R_CRIS_GNU_VTENTRY:
3731 BFD_ASSERT (h != NULL);
3733 && !bfd_elf_gc_record_vtentry (abfd, sec, h, rel->r_addend))
3737 case R_CRIS_16_TPREL:
3738 case R_CRIS_32_TPREL:
3739 /* Already warned above, when necessary. */
3743 /* Other relocs do not appear here. */
3744 bfd_set_error (bfd_error_bad_value);
3752 /* Set the sizes of the dynamic sections. */
3755 elf_cris_size_dynamic_sections (bfd *output_bfd ATTRIBUTE_UNUSED,
3756 struct bfd_link_info *info)
3758 struct elf_cris_link_hash_table * htab;
3764 htab = elf_cris_hash_table (info);
3768 dynobj = elf_hash_table (info)->dynobj;
3769 BFD_ASSERT (dynobj != NULL);
3771 if (elf_hash_table (info)->dynamic_sections_created)
3773 /* Set the contents of the .interp section to the interpreter. */
3774 if (info->executable)
3776 s = bfd_get_section_by_name (dynobj, ".interp");
3777 BFD_ASSERT (s != NULL);
3778 s->size = sizeof ELF_DYNAMIC_INTERPRETER;
3779 s->contents = (unsigned char *) ELF_DYNAMIC_INTERPRETER;
3784 /* Adjust all expected GOTPLT uses to use a GOT entry instead. */
3785 elf_cris_link_hash_traverse (htab, elf_cris_adjust_gotplt_to_got,
3788 /* We may have created entries in the .rela.got section.
3789 However, if we are not creating the dynamic sections, we will
3790 not actually use these entries. Reset the size of .rela.got,
3791 which will cause it to get stripped from the output file
3793 s = bfd_get_section_by_name (dynobj, ".rela.got");
3798 /* If this is a -Bsymbolic shared link, then we need to discard all PC
3799 relative relocs against symbols defined in a regular object. We
3800 allocated space for them in the check_relocs routine, but we will not
3801 fill them in in the relocate_section routine. We also discard space
3802 for relocs that have become for local symbols due to symbol
3803 visibility changes. For programs, we discard space for relocs for
3804 symbols not referenced by any dynamic object. */
3806 elf_cris_link_hash_traverse (htab,
3807 elf_cris_discard_excess_dso_dynamics,
3810 elf_cris_link_hash_traverse (htab,
3811 elf_cris_discard_excess_program_dynamics,
3814 /* The check_relocs and adjust_dynamic_symbol entry points have
3815 determined the sizes of the various dynamic sections. Allocate
3819 for (s = dynobj->sections; s != NULL; s = s->next)
3823 if ((s->flags & SEC_LINKER_CREATED) == 0)
3826 /* It's OK to base decisions on the section name, because none
3827 of the dynobj section names depend upon the input files. */
3828 name = bfd_get_section_name (dynobj, s);
3830 if (strcmp (name, ".plt") == 0)
3832 /* Remember whether there is a PLT. */
3835 else if (strcmp (name, ".got.plt") == 0)
3837 /* The .got.plt contains the .got header as well as the
3838 actual .got.plt contents. The .got header may contain a
3839 R_CRIS_DTPMOD entry at index 3. */
3840 s->size += htab->dtpmod_refcount != 0
3843 else if (CONST_STRNEQ (name, ".rela"))
3845 if (strcmp (name, ".rela.got") == 0
3846 && htab->dtpmod_refcount != 0
3848 s->size += sizeof (Elf32_External_Rela);
3852 /* Remember whether there are any reloc sections other
3854 if (strcmp (name, ".rela.plt") != 0)
3857 /* We use the reloc_count field as a counter if we need
3858 to copy relocs into the output file. */
3862 else if (! CONST_STRNEQ (name, ".got")
3863 && strcmp (name, ".dynbss") != 0)
3865 /* It's not one of our sections, so don't allocate space. */
3871 /* If we don't need this section, strip it from the
3872 output file. This is mostly to handle .rela.bss and
3873 .rela.plt. We must create both sections in
3874 create_dynamic_sections, because they must be created
3875 before the linker maps input sections to output
3876 sections. The linker does that before
3877 adjust_dynamic_symbol is called, and it is that
3878 function which decides whether anything needs to go
3879 into these sections. */
3880 s->flags |= SEC_EXCLUDE;
3884 if ((s->flags & SEC_HAS_CONTENTS) == 0)
3887 /* Allocate memory for the section contents. We use bfd_zalloc here
3888 in case unused entries are not reclaimed before the section's
3889 contents are written out. This should not happen, but this way
3890 if it does, we will not write out garbage. For reloc sections,
3891 this will make entries have the type R_CRIS_NONE. */
3892 s->contents = (bfd_byte *) bfd_zalloc (dynobj, s->size);
3893 if (s->contents == NULL)
3897 if (elf_hash_table (info)->dynamic_sections_created)
3899 /* Add some entries to the .dynamic section. We fill in the
3900 values later, in elf_cris_finish_dynamic_sections, but we
3901 must add the entries now so that we get the correct size for
3902 the .dynamic section. The DT_DEBUG entry is filled in by the
3903 dynamic linker and used by the debugger. */
3904 #define add_dynamic_entry(TAG, VAL) \
3905 _bfd_elf_add_dynamic_entry (info, TAG, VAL)
3909 if (!add_dynamic_entry (DT_DEBUG, 0))
3915 if (!add_dynamic_entry (DT_PLTGOT, 0)
3916 || !add_dynamic_entry (DT_PLTRELSZ, 0)
3917 || !add_dynamic_entry (DT_PLTREL, DT_RELA)
3918 || !add_dynamic_entry (DT_JMPREL, 0))
3924 if (!add_dynamic_entry (DT_RELA, 0)
3925 || !add_dynamic_entry (DT_RELASZ, 0)
3926 || !add_dynamic_entry (DT_RELAENT, sizeof (Elf32_External_Rela)))
3930 if ((info->flags & DF_TEXTREL) != 0)
3932 if (!add_dynamic_entry (DT_TEXTREL, 0))
3934 info->flags |= DF_TEXTREL;
3937 #undef add_dynamic_entry
3942 /* This function is called via elf_cris_link_hash_traverse if we are
3943 creating a shared object. In the -Bsymbolic case, it discards the
3944 space allocated to copy PC relative relocs against symbols which
3945 are defined in regular objects. For the normal non-symbolic case,
3946 we also discard space for relocs that have become local due to
3947 symbol visibility changes. We allocated space for them in the
3948 check_relocs routine, but we won't fill them in in the
3949 relocate_section routine. */
3952 elf_cris_discard_excess_dso_dynamics (h, inf)
3953 struct elf_cris_link_hash_entry *h;
3956 struct elf_cris_pcrel_relocs_copied *s;
3957 struct bfd_link_info *info = (struct bfd_link_info *) inf;
3959 if (h->root.root.type == bfd_link_hash_warning)
3960 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
3962 /* If a symbol has been forced local or we have found a regular
3963 definition for the symbolic link case, then we won't be needing
3965 if (h->root.def_regular
3966 && (h->root.forced_local
3969 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3972 = _bfd_elf_get_dynamic_reloc_section (elf_hash_table (info)
3976 sreloc->size -= s->count * sizeof (Elf32_External_Rela);
3981 /* If we have accounted for PC-relative relocs for read-only
3982 sections, now is the time to warn for them. We can't do it in
3983 cris_elf_check_relocs, because we don't know the status of all
3984 symbols at that time (and it's common to force symbols local
3987 for (s = h->pcrel_relocs_copied; s != NULL; s = s->next)
3988 if ((s->section->flags & SEC_READONLY) != 0)
3990 /* FIXME: How do we make this optionally a warning only? */
3991 (*_bfd_error_handler)
3992 (_("%B, section `%A', to symbol `%s':\n"
3993 " relocation %s should not be used"
3994 " in a shared object; recompile with -fPIC"),
3997 h->root.root.root.string,
3998 cris_elf_howto_table[s->r_type].name);
4000 info->flags |= DF_TEXTREL;
4006 /* This function is called via elf_cris_link_hash_traverse if we are *not*
4007 creating a shared object. We discard space for relocs for symbols put
4008 in the .got, but which we found we do not have to resolve at run-time. */
4011 elf_cris_discard_excess_program_dynamics (h, inf)
4012 struct elf_cris_link_hash_entry *h;
4015 struct bfd_link_info *info = (struct bfd_link_info *) inf;
4017 if (h->root.root.type == bfd_link_hash_warning)
4018 h = (struct elf_cris_link_hash_entry *) h->root.root.u.i.link;
4020 /* If we're not creating a shared library and have a symbol which is
4021 referred to by .got references, but the symbol is defined locally,
4022 (or rather, not defined by a DSO) then lose the reloc for the .got
4023 (don't allocate room for it). Likewise for relocs for something
4024 for which we create a PLT. */
4025 if (!h->root.def_dynamic
4026 || h->root.plt.refcount > 0)
4028 if (h->reg_got_refcount > 0
4029 /* The size of this section is only valid and in sync with the
4030 various reference counts if we do dynamic; don't decrement it
4032 && elf_hash_table (info)->dynamic_sections_created)
4034 bfd *dynobj = elf_hash_table (info)->dynobj;
4037 BFD_ASSERT (dynobj != NULL);
4039 srelgot = bfd_get_section_by_name (dynobj, ".rela.got");
4041 BFD_ASSERT (srelgot != NULL);
4043 srelgot->size -= sizeof (Elf32_External_Rela);
4046 /* If the locally-defined symbol isn't used by a DSO, then we don't
4047 have to export it as a dynamic symbol. This was already done for
4048 functions; doing this for all symbols would presumably not
4049 introduce new problems. Of course we don't do this if we're
4050 exporting all dynamic symbols. */
4051 if (! info->export_dynamic
4052 && h->root.dynindx != -1
4053 && !h->root.def_dynamic
4054 && !h->root.ref_dynamic)
4056 h->root.dynindx = -1;
4057 _bfd_elf_strtab_delref (elf_hash_table (info)->dynstr,
4058 h->root.dynstr_index);
4065 /* Reject a file depending on presence and expectation of prefixed
4066 underscores on symbols. */
4069 cris_elf_object_p (abfd)
4072 if (! cris_elf_set_mach_from_flags (abfd, elf_elfheader (abfd)->e_flags))
4075 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE))
4076 return (bfd_get_symbol_leading_char (abfd) == '_');
4078 return (bfd_get_symbol_leading_char (abfd) == 0);
4081 /* Mark presence or absence of leading underscore. Set machine type
4082 flags from mach type. */
4085 cris_elf_final_write_processing (abfd, linker)
4087 bfd_boolean linker ATTRIBUTE_UNUSED;
4089 unsigned long e_flags = elf_elfheader (abfd)->e_flags;
4091 e_flags &= ~EF_CRIS_UNDERSCORE;
4092 if (bfd_get_symbol_leading_char (abfd) == '_')
4093 e_flags |= EF_CRIS_UNDERSCORE;
4095 switch (bfd_get_mach (abfd))
4097 case bfd_mach_cris_v0_v10:
4098 e_flags |= EF_CRIS_VARIANT_ANY_V0_V10;
4101 case bfd_mach_cris_v10_v32:
4102 e_flags |= EF_CRIS_VARIANT_COMMON_V10_V32;
4105 case bfd_mach_cris_v32:
4106 e_flags |= EF_CRIS_VARIANT_V32;
4110 _bfd_abort (__FILE__, __LINE__,
4111 _("Unexpected machine number"));
4114 elf_elfheader (abfd)->e_flags = e_flags;
4117 /* Set the mach type from e_flags value. */
4120 cris_elf_set_mach_from_flags (abfd, flags)
4122 unsigned long flags;
4124 switch (flags & EF_CRIS_VARIANT_MASK)
4126 case EF_CRIS_VARIANT_ANY_V0_V10:
4127 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v0_v10);
4130 case EF_CRIS_VARIANT_V32:
4131 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v32);
4134 case EF_CRIS_VARIANT_COMMON_V10_V32:
4135 bfd_default_set_arch_mach (abfd, bfd_arch_cris, bfd_mach_cris_v10_v32);
4139 /* Since we don't recognize them, we obviously can't support them
4140 with this code; we'd have to require that all future handling
4141 would be optional. */
4142 bfd_set_error (bfd_error_wrong_format);
4149 /* Display the flags field. */
4152 cris_elf_print_private_bfd_data (abfd, ptr)
4156 FILE *file = (FILE *) ptr;
4158 BFD_ASSERT (abfd != NULL && ptr != NULL);
4160 _bfd_elf_print_private_bfd_data (abfd, ptr);
4162 fprintf (file, _("private flags = %lx:"), elf_elfheader (abfd)->e_flags);
4164 if (elf_elfheader (abfd)->e_flags & EF_CRIS_UNDERSCORE)
4165 fprintf (file, _(" [symbols have a _ prefix]"));
4166 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4167 == EF_CRIS_VARIANT_COMMON_V10_V32)
4168 fprintf (file, _(" [v10 and v32]"));
4169 if ((elf_elfheader (abfd)->e_flags & EF_CRIS_VARIANT_MASK)
4170 == EF_CRIS_VARIANT_V32)
4171 fprintf (file, _(" [v32]"));
4177 /* Don't mix files with and without a leading underscore. */
4180 cris_elf_merge_private_bfd_data (ibfd, obfd)
4186 if (! _bfd_generic_verify_endian_match (ibfd, obfd))
4189 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4190 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4193 imach = bfd_get_mach (ibfd);
4195 if (! elf_flags_init (obfd))
4197 /* This happens when ld starts out with a 'blank' output file. */
4198 elf_flags_init (obfd) = TRUE;
4200 /* We ignore the linker-set mach, and instead set it according to
4201 the first input file. This would also happen if we could
4202 somehow filter out the OUTPUT_ARCH () setting from elf.sc.
4203 This allows us to keep the same linker config across
4204 cris(v0..v10) and crisv32. The drawback is that we can't force
4205 the output type, which might be a sane thing to do for a
4206 v10+v32 compatibility object. */
4207 if (! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4211 if (bfd_get_symbol_leading_char (ibfd)
4212 != bfd_get_symbol_leading_char (obfd))
4214 (*_bfd_error_handler)
4215 (bfd_get_symbol_leading_char (ibfd) == '_'
4216 ? _("%B: uses _-prefixed symbols, but writing file with non-prefixed symbols")
4217 : _("%B: uses non-prefixed symbols, but writing file with _-prefixed symbols"),
4219 bfd_set_error (bfd_error_bad_value);
4223 omach = bfd_get_mach (obfd);
4227 /* We can get an incompatible combination only if either is
4228 bfd_mach_cris_v32, and the other one isn't compatible. */
4229 if ((imach == bfd_mach_cris_v32
4230 && omach != bfd_mach_cris_v10_v32)
4231 || (omach == bfd_mach_cris_v32
4232 && imach != bfd_mach_cris_v10_v32))
4234 (*_bfd_error_handler)
4235 ((imach == bfd_mach_cris_v32)
4236 ? _("%B contains CRIS v32 code, incompatible"
4237 " with previous objects")
4238 : _("%B contains non-CRIS-v32 code, incompatible"
4239 " with previous objects"),
4241 bfd_set_error (bfd_error_bad_value);
4245 /* We don't have to check the case where the input is compatible
4246 with v10 and v32, because the output is already known to be set
4247 to the other (compatible) mach. */
4248 if (omach == bfd_mach_cris_v10_v32
4249 && ! bfd_set_arch_mach (obfd, bfd_arch_cris, imach))
4256 /* Do side-effects of e_flags copying to obfd. */
4259 cris_elf_copy_private_bfd_data (ibfd, obfd)
4263 /* Call the base function. */
4264 if (!_bfd_elf_copy_private_bfd_data (ibfd, obfd))
4267 /* If output is big-endian for some obscure reason, stop here. */
4268 if (_bfd_generic_verify_endian_match (ibfd, obfd) == FALSE)
4271 if (bfd_get_flavour (ibfd) != bfd_target_elf_flavour
4272 || bfd_get_flavour (obfd) != bfd_target_elf_flavour)
4275 /* Do what we really came here for. */
4276 return bfd_set_arch_mach (obfd, bfd_arch_cris, bfd_get_mach (ibfd));
4279 static enum elf_reloc_type_class
4280 elf_cris_reloc_type_class (rela)
4281 const Elf_Internal_Rela *rela;
4283 enum elf_cris_reloc_type r_type = ELF32_R_TYPE (rela->r_info);
4286 case R_CRIS_RELATIVE:
4287 return reloc_class_relative;
4288 case R_CRIS_JUMP_SLOT:
4289 return reloc_class_plt;
4291 return reloc_class_copy;
4293 return reloc_class_normal;
4297 /* The elf_backend_got_elt_size worker. For one symbol, we can have up to
4298 two GOT entries from three types with two different sizes. We handle
4299 it as a single entry, so we can use the regular offset-calculation
4303 elf_cris_got_elt_size (bfd *abfd ATTRIBUTE_UNUSED,
4304 struct bfd_link_info *info ATTRIBUTE_UNUSED,
4305 struct elf_link_hash_entry *hr,
4307 unsigned long symndx)
4309 struct elf_link_hash_entry *h = (struct elf_link_hash_entry *) hr;
4312 /* We may have one regular GOT entry or up to two TLS GOT
4316 Elf_Internal_Shdr *symtab_hdr = &elf_tdata (ibfd)->symtab_hdr;
4317 bfd_signed_vma *local_got_refcounts = elf_local_got_refcounts (ibfd);
4319 BFD_ASSERT (local_got_refcounts != NULL);
4321 if (local_got_refcounts[LGOT_REG_NDX (symndx)] > 0)
4323 /* We can't have a variable referred to both as a regular
4324 variable and through TLS relocs. */
4325 BFD_ASSERT (local_got_refcounts[LGOT_DTP_NDX (symndx)] == 0
4326 && local_got_refcounts[LGOT_TPREL_NDX (symndx)] == 0);
4330 if (local_got_refcounts[LGOT_DTP_NDX (symndx)] > 0)
4333 if (local_got_refcounts[LGOT_TPREL_NDX (symndx)] > 0)
4338 struct elf_cris_link_hash_entry *hh = elf_cris_hash_entry (h);
4339 if (hh->reg_got_refcount > 0)
4341 /* The actual error-on-input is emitted elsewhere. */
4342 BFD_ASSERT (hh->dtp_refcount == 0 && hh->tprel_refcount == 0);
4346 if (hh->dtp_refcount > 0)
4349 if (hh->tprel_refcount > 0)
4353 /* We're only called when h->got.refcount is non-zero, so we must
4354 have a non-zero size. */
4355 BFD_ASSERT (eltsiz != 0);
4359 #define ELF_ARCH bfd_arch_cris
4360 #define ELF_TARGET_ID CRIS_ELF_DATA
4361 #define ELF_MACHINE_CODE EM_CRIS
4362 #define ELF_MAXPAGESIZE 0x2000
4364 #define TARGET_LITTLE_SYM bfd_elf32_cris_vec
4365 #define TARGET_LITTLE_NAME "elf32-cris"
4366 #define elf_symbol_leading_char 0
4368 #define elf_info_to_howto_rel NULL
4369 #define elf_info_to_howto cris_info_to_howto_rela
4370 #define elf_backend_relocate_section cris_elf_relocate_section
4371 #define elf_backend_gc_mark_hook cris_elf_gc_mark_hook
4372 #define elf_backend_gc_sweep_hook cris_elf_gc_sweep_hook
4373 #define elf_backend_plt_sym_val cris_elf_plt_sym_val
4374 #define elf_backend_check_relocs cris_elf_check_relocs
4375 #define elf_backend_grok_prstatus cris_elf_grok_prstatus
4376 #define elf_backend_grok_psinfo cris_elf_grok_psinfo
4378 #define elf_backend_can_gc_sections 1
4379 #define elf_backend_can_refcount 1
4381 #define elf_backend_object_p cris_elf_object_p
4382 #define elf_backend_final_write_processing \
4383 cris_elf_final_write_processing
4384 #define bfd_elf32_bfd_print_private_bfd_data \
4385 cris_elf_print_private_bfd_data
4386 #define bfd_elf32_bfd_merge_private_bfd_data \
4387 cris_elf_merge_private_bfd_data
4388 #define bfd_elf32_bfd_copy_private_bfd_data \
4389 cris_elf_copy_private_bfd_data
4391 #define bfd_elf32_bfd_reloc_type_lookup cris_reloc_type_lookup
4392 #define bfd_elf32_bfd_reloc_name_lookup cris_reloc_name_lookup
4394 #define bfd_elf32_bfd_link_hash_table_create \
4395 elf_cris_link_hash_table_create
4396 #define elf_backend_adjust_dynamic_symbol \
4397 elf_cris_adjust_dynamic_symbol
4398 #define elf_backend_copy_indirect_symbol \
4399 elf_cris_copy_indirect_symbol
4400 #define elf_backend_size_dynamic_sections \
4401 elf_cris_size_dynamic_sections
4402 #define elf_backend_init_index_section _bfd_elf_init_1_index_section
4403 #define elf_backend_finish_dynamic_symbol \
4404 elf_cris_finish_dynamic_symbol
4405 #define elf_backend_finish_dynamic_sections \
4406 elf_cris_finish_dynamic_sections
4407 #define elf_backend_create_dynamic_sections \
4408 _bfd_elf_create_dynamic_sections
4409 #define bfd_elf32_bfd_final_link \
4410 bfd_elf_gc_common_final_link
4411 #define elf_backend_hide_symbol elf_cris_hide_symbol
4412 #define elf_backend_reloc_type_class elf_cris_reloc_type_class
4414 #define elf_backend_want_got_plt 1
4415 #define elf_backend_plt_readonly 1
4416 #define elf_backend_want_plt_sym 0
4417 #define elf_backend_got_header_size 12
4418 #define elf_backend_got_elt_size elf_cris_got_elt_size
4420 /* Later, we my want to optimize RELA entries into REL entries for dynamic
4421 linking and libraries (if it's a win of any significance). Until then,
4422 take the easy route. */
4423 #define elf_backend_may_use_rel_p 0
4424 #define elf_backend_may_use_rela_p 1
4425 #define elf_backend_rela_normal 1
4427 #include "elf32-target.h"
4429 #undef TARGET_LITTLE_SYM
4430 #undef TARGET_LITTLE_NAME
4431 #undef elf_symbol_leading_char
4433 #define TARGET_LITTLE_SYM bfd_elf32_us_cris_vec
4434 #define TARGET_LITTLE_NAME "elf32-us-cris"
4435 #define elf_symbol_leading_char '_'
4437 #define elf32_bed elf32_us_cris_bed
4439 #include "elf32-target.h"